U.S. patent application number 12/509651 was filed with the patent office on 2010-07-15 for container for selectively dispensing a material.
Invention is credited to Randolph Scott Presley.
Application Number | 20100178429 12/509651 |
Document ID | / |
Family ID | 42340269 |
Filed Date | 2010-07-15 |
United States Patent
Application |
20100178429 |
Kind Code |
A1 |
Presley; Randolph Scott |
July 15, 2010 |
CONTAINER FOR SELECTIVELY DISPENSING A MATERIAL
Abstract
A dispensing container apparatus having a tubular container with
a bottom end and a rotatable annular upper end connected to a
tubular shaft, and a compression member associated with the tubular
shaft which causes a material disposed within the containment
region to communicate into the tubular shaft or into a containing
area upon rotation of the rotatable annular upper end. A brush
applicator removably fits into an open end of the tubular shaft for
receiving paste to be dispensed via brush application. Also, the
container apparatus includes a top member having paste-access holes
sized and adapted to closely receive different threaded shaft sizes
of fasteners. In one form, the top member is partially rotatable
for closing the holes, and then further rotatable for moving the
piston (and hence paste) within the container.
Inventors: |
Presley; Randolph Scott;
(Grand Haven, MI) |
Correspondence
Address: |
PRICE HENEVELD COOPER DEWITT & LITTON, LLP
695 KENMOOR, S.E., P O BOX 2567
GRAND RAPIDS
MI
49501
US
|
Family ID: |
42340269 |
Appl. No.: |
12/509651 |
Filed: |
July 27, 2009 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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61145650 |
Jan 19, 2009 |
|
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61144215 |
Jan 13, 2009 |
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Current U.S.
Class: |
427/430.1 ;
118/429; 220/694; 222/409 |
Current CPC
Class: |
B05C 17/014 20130101;
B05C 3/109 20130101; F16N 7/00 20130101; B65D 83/0016 20130101;
B65D 83/0011 20130101; B05C 3/09 20130101; A46B 11/00 20130101 |
Class at
Publication: |
427/430.1 ;
222/409; 220/694; 118/429 |
International
Class: |
B05D 1/18 20060101
B05D001/18; B65D 83/64 20060101 B65D083/64; B65D 25/00 20060101
B65D025/00 |
Claims
1. A container apparatus for dispensing a lubricious paste
material, comprising: a tubular container; a top assembly covering
the tubular container and including a top member defining at least
one paste-access hole; a piston for motivating paste within the
container toward the top member; and a shaft member operably
engaging the piston for rotation to move the piston within the
container.
2. The container apparatus defined in claim 1, wherein the shaft
member is fixed to one of the top member and a bottom of the
container.
3. The container apparatus defined in claim 2, wherein the shaft
member is fixed to the top member and the top member is rotatable
relative to the container.
4. The container apparatus defined in claim 1, wherein the at least
one paste-access hole includes an elongated deep hole, and
including a brush applicator positioned in the elongated deep
hole.
5. The container apparatus defined in claim 1, wherein the at least
one paste-access hole includes a plurality of holes, each being a
different size and adapted to receive a threaded fastener with
different shaft size.
6. The container apparatus defined in claim 1, including a
resilient wiper extending inward from a margin of the at least one
paste-access hole.
7. The container apparatus defined in claim 1, wherein the shaft
member comprises a tubular shaft defining at least one of the at
least one paste-access hole and includes a lateral hole defining a
path for paste flow into the one paste-access hole.
8. The container apparatus defined in claim 1, wherein the top
assembly includes a resilient layer and a retainer for holding the
resilient layer near the top member in a position where the
resilient layer wipes excess paste from items extended into the at
least one paste-access hole.
9. The container apparatus defined in claim 8, wherein the
resilient layer and retainer are connected to the top member but
permit a partial turn of the top member without the resilient layer
and retainer also moving, such that a partial turn of the top
member closes the at least one paste-access hole and a further turn
of the top member causes the shaft member to move the piston within
the container.
10. A dispensing apparatus comprising: a container with top member
having a plurality of paste-access holes and adapted to hold
viscous fluid; a handled applicator in one of the paste-access
holes with an applicator end positioned to touch the viscous fluid
in the container; and remaining ones of the holes being shaped to
closely receive a shaft end of a fastener of a known size for
coating the shaft end with a limited thickness of the viscous
fluid.
11. The apparatus defined in claim 10, including a wiper in each of
the remaining ones of the holes for resiliently wiping threaded
shafts of the fasteners when the fasteners are placed in the holes
and then removed.
12. The apparatus defined in claim 10, including a paste applicator
that includes a bristled end.
13. The apparatus defined in claim 10, including a resilient layer
attached to the top member by an attachment structure that allows a
partial rotation of the top member to a first position without
rotating the resilient layer and thereafter upon a further rotation
to a second position that causes the resilient member to rotate
with the top member, the resilient layer including mating holes
that align with the paste-access holes when in the first position
but that misalign when in the second position.
14. A container apparatus, comprising: a tubular container having a
bottom end, an annular upper end and an inner surface, wherein one
of the annular upper end and lower end is rotatable and includes a
tubular shaft extending downwardly therefrom that provides fluid
communication from the tubular container into the tubular shaft; a
compression member disposed within and slidably engaging the inner
surface of the tubular container, the compression member being
selectively positionable along the tubular shaft and defining with
one of the ends of the tubular container a containment region
having a volume; wherein rotation of the one annular upper or lower
end causes the compression member to travel along the tubular shaft
decreasing the volume of the containment region to cause a material
disposed within the containment region to communicate into the
tubular shaft.
15. The container apparatus of claim 14, further comprising a paste
applicator, wherein the paste applicator comprises a shaft having a
length and a bristled end, wherein the bristled end is disposable
at least partially within the tubular shaft.
16. The container apparatus of claim 14, wherein the applicator
includes a seal member disposed on the shaft for engaging at least
a portion of the tubular shaft to prevent loss or evaporation of
the material contained in the tubular shaft.
17. The container apparatus of claim 14, wherein the tubular shaft
includes at least one aperture disposed on an end thereof providing
fluid communication between the containment area and the tubular
shaft.
18. A container apparatus for dispensing a paste, comprising: a
container holding paste and including an open top; a top member for
covering the container, the top member having a paste-access hole
sized and adapted to closely receive a shaft of a fastener; a
piston for moving the paste toward the top but without forcing the
paste out the paste-access hole in the cover; whereby the shaft of
the fastener can be extended through the paste-access hole and be
covered with the paste and, when removed, leaves a layer of paste
of limited thickness on the shaft.
19 The container apparatus defined in claim 18, including a cover
for covering the top member and the hole to prevent debris from
entering the paste and to prevent loss of volatile materials in the
paste.
20. The container apparatus defined in claim 18, wherein the top
member includes a wiper adapted to leave the limited thickness that
covers the threads on the shaft.
21. The container apparatus defined in claim 18, wherein the top
member includes a resilient layer that acts as a wiper around the
paste-access hole.
22. The container apparatus defined in claim 18, wherein the top
member includes a threaded center shaft extending through the
piston and to a bottom of the container such that, when one of the
top member or the bottom is rotated, the piston moves up the
threaded center shaft to motivate the paste toward a top of the
container.
23. The container apparatus defined in claim 18, wherein the piston
includes an outer seal that slidingly engages the container and
that provides sufficient friction to cause the piston to move
vertically on the threaded center shaft when the top member is
rotated rather than to spin rotationally.
24. The container apparatus defined in claim 18, wherein the top
member includes a horizontal plate with a first hole and a
resilient layer with a second hole, the first and second holes
aligning to form the paste-access hole, but the first hole being
larger than the second hole so that marginal material in the
resilient layer acts as a wiper when the shaft is extended
therethrough.
25. A container apparatus for dispensing a paste, comprising: a
container adapted to hold a paste and including an open top; and a
top member on the container including a resilient wiper with a
flexible wiping edge shaped to remove excess material from the
fastener as the fastener is removed from dipping into the paste to
thus keep the excess material in the container; whereby the shaft
of the fastener can be extended into the paste and be covered with
the paste and, when removed, a layer of paste of limited thickness
is left on the shaft.
26. A method of applying a paste to a threaded shaft of a fastener,
comprising steps of: providing a container holding paste and
including an open top; providing a top member for covering the
container, the top member having an open paste-access hole sized
and being adapted to closely receive a threaded shaft of a
fastener; extending the threaded shaft of the fastener through the
paste-access hole and into the paste to thus cover a portion of the
threaded shaft with the paste; and removing the threaded shaft such
that, when removed, a layer of paste of limited thickness remains
on the threaded shaft.
Description
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] This application claims benefit under 35 U.S.C.
.sctn.1.119(b) of provisional application Ser. No. 61/145,650,
filed Jan. 19, 2009, entitled CONTAINER FOR SELECTIVELY DISPENSING
A MATERIAL, and also of provisional application Ser. No.
61/144,215, filed Jan. 13, 2009 entitled WIPING DISPENSER FOR
ANTI-SEIZE PASTE, the entire contents of both of which are
incorporated herein in their entirety.
BACKGROUND OF THE PRESENT INVENTION
[0002] The present invention relates in general to a container and
more particularly, but not by way of limitation, to a container for
selectively dispensing a contained material.
[0003] Although containers are well known in the art, conventional
containers used in conjunction with highly viscous materials, for
example, grease, adhesive, anti-seize compounds, and the like
suffer from numerous drawbacks. Typical containers include, but are
not limited to, tubes, boxes, plastic enclosures with lids and the
like. Dispensing material from these conventional containers can be
a messy and extremely inaccurate and wasteful process. In general,
there is no way to approximate or control the amount of material
dispensed from a typical container. Also, typical containers, for
example tubes, are subject to leakage. As material is squeezed from
the tube, excess material is often unnecessarily dispensed leading
to waste. Also, material is left in the container and wasted.
[0004] Additionally, some applications require the use of a brush
to apply the dispensed material. In general, the brush is not
designed to cooperate with the container, so waste and mess are
inevitable. In some instances, the brush is attached to the bottom
side of the lid and is fully immersed within the material, and
leads to over-application of the material and excessive mess. In
cases where the brush is not attached to the lid, one must find a
place to rest the brush when not in use. The user cannot lay the
brush down without getting the dispensed material on surrounding
surfaces. In the case of an adhesive, the brush may bond to the
surface the brush is laid upon, ruining not only the brush, but
also the surface or item the brush was laid upon.
[0005] Anti-seize compounds, grease, and lubricants (called
"lubricious paste" herein) are often applied to the threaded shafts
of screws, bolts, and other fasteners in order to prevent installed
fasteners from seizing up over time, thus allowing easier removal
at a later time. They are also sometimes used to facilitate
installation of (or disassembly of) threaded (and non-threaded)
shafted items. They are also used to reduce friction between any
two moving parts. Historically, this has often been done by dipping
the fastener's threaded portion/shaft into an open container
holding the anti-seize paste, or by applying "blobs" of the
anti-seize paste to the fastener's shaft using a brush or
applicator. However, this results in much more of the paste being
used than is actually necessary. Further, it can lead to an
incredible mess, both at the installation site and also on and
around the container, since any attempt to wipe off excess paste
"expands" the sticky mess. It is desirable to provide a way to
apply a more appropriate amount of the anti-seize paste to threaded
fasteners, and to apply it only in a desired location while still
completely and uniformly covering the threads/shaft. Another
problem is that repairmen are not inclined to take the time (nor
have the patience) to limit the amount of paste that they apply,
nor be accurate in their point of application when putting
anti-seize paste onto a fastener. Currently, containers and brushes
for applying anti-seize compounds, grease, and lubricants are
intended to be thrown away, leading to environmental concerns and a
non-environmentally friendly system.
SUMMARY OF THE INVENTION
[0006] In one aspect of the present invention, a container
apparatus for dispensing a lubricious paste material includes a
tubular container. A top assembly covers the tubular container and
includes a top member defining at least one paste-access hole, a
piston for motivating paste within the container toward the top
member, and a shaft member operably engaging the piston for
rotation to move the piston within the container.
[0007] In another aspect of the present invention, a container
apparatus includes a tubular container. A top assembly fits onto
the container and includes a top member defining first and second
paste-access holes, a hand-held applicator shaped to fit into the
first paste-access hole, the second paste-access hole being
configured and adapted to receive a shaft of a fastener for
applying paste to the shaft, and a piston for motivating paste
within the container toward the top member. The top assembly
includes a shaft mechanism operably engaging the piston and is
rotatable to move the piston and paste within the container.
[0008] In another aspect of the present invention, a dispensing
apparatus includes a container with top member having a plurality
of holes and adapted to hold viscous fluid. The apparatus further
includes a handled applicator in one of the holes with an
applicator end positioned to touch the viscous fluid. Remaining
ones of the holes are shaped to closely receive a shaft end of a
fastener of known size for coating the shaft end with a limited
thickness of the viscous fluid.
[0009] In another aspect, the present invention is directed to a
container apparatus, comprising: (a) tubular container having a
bottom end, an annular upper end and an inner surface, wherein the
annular upper (or lower) end is freely rotatable and comprises a
tubular shaft extending downwardly therefrom providing fluid
communication from the tubular container into the tubular shaft;
(b) a compression member disposed within and slidably engaging the
inner surface of the tubular container, wherein the compression
member is selectively positionable along the tubular shaft, and
wherein the compression member and the bottom end of the tubular
container cooperate to define a containment region having a volume;
and (c) wherein rotation of the annular upper or lower end causes
the compression member to travel along the tubular shaft decreasing
the volume of the containment region to cause a material disposed
within the containment region to communicate into the tubular
shaft.
[0010] In a narrower aspect, the compression member comprises a
circumferential seal member disposed between the compression member
and the inner surface of the tubular container.
[0011] In another narrow aspect, the container apparatus further
comprises a brush, wherein the brush comprises a shaft having a
length and a bristled end, wherein the bristled end is disposable
at least partially within the tubular shaft.
[0012] In yet another narrower aspect, the brush comprises a seal
member disposed on the shaft for engaging at least a portion of the
tubular shaft to prevent loss of the material contained in the
tubular shaft.
[0013] In an additional narrower aspect, the tubular shaft
comprises one or more lateral apertures disposed on an end thereof
providing fluid communication between the containment area and the
tubular shaft.
[0014] In another aspect, the present invention is directed to a
container apparatus, comprising: (a) a tubular container having a
sealed bottom end, an open upper end and an inner surface; (b) a
piston assembly comprising: (1) a cap comprising an aperture
extending therethrough, the cap sealing the open upper end of the
tubular container, wherein the cap is freely rotatably about the
open upper end of the tubular container, and wherein the cap
comprises: (i) a tubular shaft extending downwardly from and in
axial alignment with the aperture of the cap into the tubular
container, the tubular shaft providing fluid communication between
the tubular container and the tubular shaft; and (2) a compression
member disposed within and slidably engaging the inner surface of
the tubular container, wherein the compression member is
selectively positionable along the tubular shaft, and wherein the
compression member and the sealed bottom end of the tubular
container cooperate to define a containment region having a volume;
and (c) wherein rotation of the annular upper or lower end causes
the compression member to travel downwardly along the tubular shaft
decreasing the volume of the containment region to cause a material
disposed within the containment region to communicate into the
tubular shaft.
[0015] In another narrower aspect, the compression member comprises
a circumferential seal member disposed between the compression
member and the inner surface of the tubular container.
[0016] In yet another narrower aspect, the cap comprises a collar
portion configured to fit within the open upper end of the tubular
container, the collar portion comprising a circumferential
groove.
[0017] In an additional narrower aspect, the tubular container
comprises a tab extending from the inner surface of the tubular
container for engaging the circumferential groove of the cap and
securing the cap to the open upper end of the tubular container and
allowing for free rotation of the cap.
[0018] In another narrower aspect, the aperture of the cap is
tapered from a top surface of the cap downwardly to the tubular
shaft.
[0019] In another narrower aspect, the brush comprises a shaft
having a length and a bristled end, wherein the bristled end is
disposable at least partially within the tubular shaft via the
aperture of the tubular shaft.
[0020] In yet another narrower aspect, the brush comprises a seal
member disposed on the shaft for engaging at least a portion of the
aperture of the shaft to prevent loss of the material contained in
the tubular shaft and prevent evaporation of volatiles to the
atmosphere.
[0021] In another narrower aspect, the tubular shaft comprises one
or more lateral apertures providing fluid communication between the
containment area and the tubular shaft.
[0022] In another narrower aspect, the present invention is
directed to a container apparatus, comprising: (a) a tubular
container having a sealed bottom end, an open upper end and an
inner surface; (b) a piston assembly comprising: (1) a cap
comprising a centrally aligned aperture extending therethrough, the
cap sealing the open upper end of the tubular container, wherein
the cap is freely rotatable about the open upper end of the tubular
container, and wherein the cap comprises: (i) a tubular shaft
extending downwardly from and in axial alignment with the aperture
of the cap into the tubular container, the tubular shaft providing
fluid communication between the tubular container and the tubular
shaft; (c) a seal member disposed between the compression member
and the inner surface of the tubular container; (d) a compression
member disposed within and slidably engaging the inner surface of
the tubular container, wherein the compression member is
selectively positionable along the tubular shaft, and wherein the
compression member and the sealed bottom end of the tubular
container cooperate to define a containment region; and (e) wherein
rotation of the annular upper or lower end causes the compression
member to travel downwardly along the tubular shaft decreasing the
volume of the containment region and causing a material disposed
within the containment region to communicate into the tubular
shaft.
[0023] In another aspect of the present invention, a container
apparatus for dispensing a paste includes a container adapted to
hold a paste and including a top and a top member for covering the
top of the container. The top member has one or more paste-access
holes sized and adapted to closely receive a shaft of a fastener,
and a piston for moving the paste toward the top but without
forcing the paste out the hole in the cover. The shaft of the
fastener can be extended through the hole and be covered with the
paste and, when removed, leaves a layer of paste of limited
thickness on the shaft.
[0024] In another aspect of the present invention, a container
apparatus for dispensing a paste onto a fastener includes a
container adapted to hold a paste and including an open top, and a
top member on the container including a resilient wiper with a
flexible wiping edge for wiping excess material from a fastener as
the fastener is removed from dipping into the paste to keep the
excess material in the container. By this arrangement, the shaft of
the fastener can be extended into the paste and be covered with the
paste and, when removed, a layer of the paste of limited thickness
is left on the shaft.
[0025] In another aspect of the present invention, a method of
applying paste to a threaded shaft of a fastener comprises steps of
providing a container holding paste and including an open top; and
providing a top member for covering the container, the top member
having a paste-access hole sized and being adapted to closely
receive the threaded shaft of a fastener. The method further
includes extending the threaded shaft of the fastener through the
hole and into the paste to thus cover a portion of the threaded
shaft with the paste, and then removing the threaded shaft such
that, when removed, a layer of paste of limited thickness remains
on the threaded shaft.
[0026] In another aspect of the present invention, a method of
applying a paste to a shaft of a fastener comprises steps of
providing a container holding paste and including a top, providing
a top member for partially covering the container, the top member
including a flexible wiper, and dipping the fastener into the paste
through the opening and then wiping excess material from a shaft of
the fastener on the wiper as the fastener is removed to thus leave
a layer of paste of limited thickness remaining on the shaft.
[0027] An object is to provide a dispensing system that is more
environmentally friendly by reducing waste and evaporation
(pollution) and by reducing excess deposits of material at
locations of use.
[0028] An object is to provide a refillable system that minimizes
the amount of environmentally-unfriendly waste that must be
disposed of.
[0029] These and other aspects, objects, and features of the
present invention will be understood and appreciated by those
skilled in the art upon studying the following specification,
claims, and appended drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0030] Certain embodiments of the present invention are illustrated
by the accompanying figures, but it should be understood that the
figures are not necessarily to scale and that details may be
present that are not necessary for an understanding of the
invention. Further, it should be understood that the invention is
not necessarily limited to the particular embodiments illustrated
herein.
[0031] FIGS. 1-4 are perspective views of a container apparatus
embodying the present invention, FIG. 1 showing the container
apparatus ready for use, FIG. 2 showing a process of coating a
threaded shaft of a bolt, FIG. 3 showing the container apparatus
with bolt-receiving paste-access holes closed; FIG. 4 showing
removing a brush applicator from a paste-access hole of the
container apparatus.
[0032] FIG. 5 is a perspective view showing the brush applicator
being used.
[0033] FIG. 6 is an exploded perspective view of the present
apparatus;
[0034] FIG. 7 is a cross-sectional view of FIG. 1, and FIGS. 7A-7C
are modified configurations.
[0035] FIG. 8 is an exploded cross-sectional view of FIG. 7.
[0036] FIG. 9 is a bottom view of the top member in FIG. 8, and
FIG. 10 is a cross section along line X-X in FIG. 9.
[0037] FIG. 11 is a top view of the retainer member in FIG. 8, and
FIG. 12 is a side view of FIG. 11.
[0038] FIG. 13 is a side view, showing a longitudinal cross section
of the shaft in FIG. 8.
[0039] FIG. 14 is a perspective view of a modified container
apparatus and brush applicator, FIG. 14A being similar but with the
brush applicator pulled out, and FIG. 14B being an exploded view of
FIG. 14.
[0040] FIGS. 15 and 16 are cross-sectional views of a container
apparatus showing the compression member disposed adjacently to the
cap, FIG. 15 showing the container apparatus adjusted to a large
containment region, and FIG. 16 showing the container apparatus
adjusted to a smaller containment region, FIGS. 15A and 16A showing
perspective views of FIGS. 15-16, respectively.
[0041] FIG. 17 is a perspective cross-sectional view of another
modified container apparatus, the apparatus including
bolt-receiving paste-access holes for coating threads on the bolt's
shaft.
[0042] FIG. 18 is a top view of FIG. 17.
[0043] FIG. 19 is a side cross-sectional view of the rotatable
subassembly of FIG. 17, the rotatable subassembly including the top
container-defining portion and threaded vertical shaft (with the
piston removed).
[0044] FIG. 20 is a perspective view of a modified version of FIG.
17, and FIG. 20A is a cross section along line XXA-XXA.
[0045] FIG. 21 is a perspective view of another modified version of
FIG. 17, and FIG. 21A is a cross section along line XXIA-XXIA.
[0046] FIGS. 22-23 are perspective views showing a refill system
for the present apparatus, FIG. 22 being exploded apart, FIG. 23
being enlarged and placed together.
DESCRIPTION OF EMBODIMENTS
[0047] While this invention is susceptible of embodiment in many
different forms, there is shown in the drawings and will herein be
described in detail several specific embodiments with the
understanding that the present disclosure is to be considered as an
exemplification of the principles of the invention and is not
intended to unnecessarily limit the invention to the embodiments
illustrated. It will be understood that like or analogous elements
and/or components, referred to herein, may be identified throughout
the drawings with like reference characters.
[0048] The present description is organized as follows in order to
provide a thorough but clear understanding of the present concepts.
First discussed are FIGS. 14-16A (which disclose a brush-type
container apparatus 10), and then FIGS. 17-23 (which disclose a
bolt-coating-type container apparatus 120 and paste refill system),
and then FIGS. 1-13 (which disclose a combination
brush-and-bolt-coating container apparatus 220). Notably, several
of the present concepts are interrelated, and thus it should be
recognized that components and characteristics described in each of
apparatus 10, 120 and 220 can be used in or incorporated into the
other apparatus, as will be understood by persons skilled in this
art.
[0049] Container apparatus 10 (FIGS. 14-16A) includes a tubular
container 14, a piston assembly 18 and a handled applicator 22
(also called a "brush applicator" or "brush"). In general, the
container apparatus 10 is provided for selectively dispensing a
material contained within the tubular container 14. The illustrated
tubular container 14 has a substantially uniform cylindrical
cross-sectional area extending from upper end 26 to lower end 30,
and defining an inner surface 34 and inner region 38. Although the
tubular container 14 is shown as having a substantially uniform
cylindrical cross-sectional area, it is contemplated that other
cross-sectional areas could be used, such as square, triangular, or
elliptical. The tubular container 14 is constructed from a strong,
rigid material, for example, a resin and/or plastic polymer, a
metal and/or metallic alloy, a fiberglass material, or combinations
thereof. The illustrated tubular container 14 is sealed at lower
end 30 with cap 42, although it will be understood that tubular
container 14 and cap 42 may be fabricated integrally. Additionally,
tubular container 14 is optionally provided with one or more
apertures 46 fabricated into the sides of upper end 26. In
accordance with the present disclosure, apertures 46 are configured
to receive a fastener therethrough for securing tubular container
14 to piston assembly 18.
[0050] Piston assembly 18 (FIG. 14B) includes a cap 50, a tubular
shaft 54 and a compression member 58. Cap 50 is an annular member,
wherein the inside ring of the annular member defines a centrally
aligned, tapering aperture 60. The annular member is constructed
from a strong, rigid material, for example, a resin and/or plastic
polymer, a metal and/or metallic alloy, a fiberglass material, or
combinations thereof. Cap 50 includes a top surface 62 and a lower
surface 64, and includes a cylindrical collar 70 having a
circumferential groove 74. The cap 50 preferably includes a knurled
or otherwise tacky surface fabricated onto the edge of the cap 50
to provide a non-slip gripping surface. Circumferential groove 74
is located at a distance along cylindrical collar 70 such that
circumferential groove 74 may align with apertures 46 of tubular
container 14. Cylindrical collar 70 is constructed to be received
within upper end of tubular container 14. Cap 50 is configured such
that cylindrical collar 70 joins with upper end 26 of tubular
container 14 to form an enclosure.
[0051] Cap 50 (FIG. 14B) is additionally provided with tubular
shaft 54 extending downwardly from lower surface 64 of cap 50 and
in axial alignment with tapered aperture 60 of cap 50. Tubular
shaft 54 is preferably fabricated having a substantially uniform
cylindrical cross-sectional area extending along the entire length
of tubular shaft 54 to define inner region 76 (FIG. 15). In
accordance with the present invention, tubular shaft 54 is
preferably provided with threaded outer surface 78 extending along
the length of tubular shaft 54 to lower end 82 for threadably
engaging compression member 58 (discussed in greater detail below).
In one embodiment, lower end 82 includes one or more lateral
apertures 86 fabricated into lower end 82 of tubular shaft 54
providing fluid communication between tubular container 14 and
inner region 76. Lower end 78 may also include, for example, an
open lower end (not shown) providing fluid communication between
tubular container 14 and inner region. Although fluid communication
has been disclosed as being provided by lateral apertures 86 and/or
an open lower end, it is contemplated that other fluid
communication members could be constructed and would be known to
one of ordinary skill in the art when taken with the present
disclosure.
[0052] Tubular shaft 54 (FIG. 14B) cooperating with tapered
aperture 60 of cap 50 defines a fluid passage (also referred to
herein as a paste-access hole) extending from top surface 62 of cap
50 to lower end 82 of tubular shaft 54 and includes tapered
aperture 60 of cap 50 and the substantially uniform inner region 76
of tubular shaft 54. It will be understood that the tapered
aperture 60 of cap 50 could be replaced with an aperture having a
substantially uniform cross-sectional area.
[0053] Compression member 58 (also called a "piston" herein) (FIG.
14B) comprises an annular disk constructed from a strong, rigid
material, for example, a resin and/or plastic polymer, a metal
and/or metallic alloy, a fiberglass material, or combinations
thereof. Compression member 58 includes bottom surface 86' and is
provided with threaded surface 88 for interfacing with threaded
outer surface 78 of tubular shaft 54. Also, compression member 58
includes a seal member, such as an O-ring or gasket, disposed about
the circumference of outer surface 92 of compression member 58. In
one embodiment, the seal member is provided as O-ring 96 is
configured to fit within a circumferential groove fabricated into
outer surface 92 of compression member 58. O-ring 96 is disposed
between outer surface 92 of compression member 58 and inner surface
34 of tubular container 14 when compression member 58 is slidably
inserted within tubular container 14. Although the seal member has
been disclosed as comprising O-ring 96, any type of seal member
which would be known to one of ordinary skill in the art with the
present disclosure before them are likewise contemplated for use in
accordance with the present invention.
[0054] When compression member 58 is disposed within tubular
container 14, bottom surface 86 of compression member 58 and cap 42
of tubular container 14 cooperate to define containment region 100
(FIG. 15). It will be understood that the volume of containment
region 100 increases as the distance between bottom surface 86 of
compression member 58 and cap 42 of tubular container 14 increases,
and vice versa, as will be discussed in greater detail below.
[0055] It is contemplated that the container apparatus 10 can be
assembled in various manners. For example, container apparatus 10
can be assembled by first assembling piston assembly 18. Piston
assembly 18 is constructed by threading compression member 58 onto
tubular shaft 54 until compression member 58 is disposed near
cylindrical collar 70 of cap 50 (compare the location of
compression member 58 on shaft 54 in FIGS. 15-16). Tubular
container 14 is then filled, at least partially, with a highly
viscous material, for example, a grease or adhesive. The piston
assembly 18 is engaged with tubular container 14 by slidably
inserting compression member 58 into inner region 38 of tubular
container 14. O-ring 96 of compression member 58 engages inner
surface 34 of tubular container 14. Piston assembly 18 is further
slid into tubular container 14 until cylindrical collar 70 of cap
50 is slidably inserted within upper end 26 of tubular container 14
such that circumferential groove 74 of cylindrical collar 70 of cap
50 aligns with apertures 46 of tubular container 14. Next,
fasteners 98, for example, threaded bolts, are placed through
apertures 46 and extend at least partially into circumferential
groove 74 of cylindrical collar 70 of cap 50 to secure piston
assembly 18 to tubular container 14. It will be understood that cap
50 is freely rotatable about upper end 26 of tubular container 14
when tubular container 14 and piston assembly 18 are secured
together via cooperation of fasteners 98 with circumferential
groove 74 of cylindrical collar 70.
[0056] In operation, clockwise rotation of cap 50 causes tubular
shaft 54 to rotate. However, frictional forces between O-ring 96 of
compression member 58 and inner surface 34 of tubular container 14
cause compression member 58 to resist rotation. Thus, the
compression member 58 translates downwardly along tubular shaft 54
as tubular shaft 54 rotates. The downward translation of
compression member 58 exerts a compressive force on the material
disposed in containment region 100 of tubular container 14, forcing
and/or extruding the material through apertures 86 of tubular shaft
54 and into fluid passage 76. Brush applicator 22 (or other
implement) may be inserted into fluid passage 76 to extract a
portion of the material contained in fluid passage 76 via a
bristled end 104. Brush applicator 22 includes bristles 22' and
also may include seal member 106 (e.g., an O-ring) disposed about a
shaft of brush 22. Seal member 106 engages at least a portion of
fluid passage 76 to prevent a loss of the material from fluid
passage 76 or to prevent a drying of the material. Once the paste
material forced into fluid passage 76 has been used, cap 50 is
rotated again forcing additional material into fluid passage 76.
This operation is repeatable until compression member 58 has
substantially traversed the length of tubular shaft 54 (see FIG.
16).
[0057] Notably, the brush applicator 22 may include a shaft with
different shapes. For example, the shaft may be configured to fit
completely within a tubular shaft 54, or may include a large upper
end that mates into the tapered surface 60 or that simply abuts
same (with the O-ring 106 fitting into the inner region 76). Also,
a magnet can be placed on a bottom of the container apparatus 10 so
that the apparatus 10 can be securely placed on a metal object
(such as a machine part or metal vehicle component) in order to
prevent accidental tip-over and spillage during use.
[0058] To refill container apparatus 10, cap 50 is rotated in a
counterclockwise direction (FIG. 16) causing compression member 58
to translate upwardly along tubular shaft 54 via the threaded
connection until compression member 58 is positioned near cap 50.
Piston assembly 18 is removed from tubular container 14 and
additional material is added to tubular container 14. In lieu of
removing piston assembly 18, the refill material may be injected
into fluid passage 76. The injected refill material communicates
through apertures 86 of tubular shaft 54 into containment region
100 to refill tubular container 14.
[0059] A modified container apparatus 120 (FIG. 17) for dispensing
a paste onto threaded fasteners includes a container 121 adapted to
hold a paste 122 (such as anti-seize paste compound) and to present
same under the container's top for coating a shafted fastener. The
container 121 includes an open top end defining an open area which
receives a cup-defining top assembly 123 (FIG. 19), which includes
a cup-defining top member 135 covered by a flexible layer 136 and a
top plate 137. The top plate 137 and flexible layer 136 have one or
more bolt-receiving applicator holes (three open applicator holes
124-126 being illustrated), each sized and adapted to closely
receive a particularly-sized shaft of a fastener or bolt, such as
threaded shaft 127 of fastener 128. Notably, more or less holes can
be provided. The three illustrated holes 124-126 are different
diameters, such that the apparatus is adapted to dispense paste 122
onto differently sized fasteners, such as hole 124 being for 1/4-
3/16 inch diameter fasteners, hole 125 being for 5/16-3/8 inch
diameter fasteners, and hole 126 being for 1/2- 7/16 inch diameter
fasteners.
[0060] A piston 130 (FIG. 17) is positioned in the container 121
and includes an O-ring seal 131 sealingly slidably engaging an
inside surface of the container 121. A threaded center shaft 132 is
fixed to and extends downward from a bottom of the cup-defining top
member 135 and threads through the piston 130. The lower end of the
illustrated shaft 132 abuts a bottom of the container 121, and can
be rotatably attached to a bottom of the container. However, it is
contemplated that a bottom of the shaft 132 can be constructed to
engage the bottom of the container 121 in different configurations,
such as by engaging a pocket in a bottom of the container. Further,
it is contemplated that the shaft (132) does not have to hit the
bottom at all, but needs only to extend sufficiently to always
engage the piston 130 when the piston 130 is all the way down to
its bottom position.
[0061] When the top assembly 123 (135/136/137) is rotated (for
example, in a clockwise direction, FIG. 17), the shaft 132 rotates
while the piston 130 resists rotation due to O-ring 131, causing
the piston 130 to move vertically on the threaded shaft 132. For
example, when the top assembly 123 is rotated clockwise (as viewed
from above), it moves the paste 122 toward the top of the container
121. The reverse rotation causes the piston to move downwardly
(such as when getting ready to refill the container). Notably, the
seal 131 frictionally engages the wall of the container 121 when
the assembly 123 is rotated, such that the piston 130 does not
simply rotatingly spin as the top assembly 123 is rotated, but
instead it threadingly "walks" up the threaded shaft. Thus, the
paste 122 can be easily moved up to be against (or closely under)
the application holes 124-126 without forcing the paste 122 out of
the holes 124-126. In the illustrated arrangement, the O-ring seal
131 can be used to hold the assembly of components 123, 130, and
132 within the container 121. (i.e., It is contemplated that the
fastener engaging a bottom of the shaft 132 through the bottom of
the container 121 could be eliminated). It is also contemplated
that a guide could be formed vertically along the container's wall
and in the piston to more positively prevent rotation of the piston
130, but testing to date shows that the illustrated system does not
require that.
[0062] It is contemplated that, if desired, the outer surface of
the cup-defining top member 135 can include a circumferential
channel for receiving an O-ring or gadget to sealingly engage the
inside surface of the container 121. Also, it is contemplated that
retainer screws or projections can be extended through the
container 121 into a side-facing channel in the cup-defining top
member 135, the purpose being for inner ends of the
screws/projections to positively retain the top assembly 123 on the
container 121 while allowing the top assembly 123 to be rotated in
the container 121. However, testing to date suggests this is not
necessary.
[0063] In top assembly 123 (FIG. 19), the cup-forming bottom member
135, the resilient layer 136, and the top plate 137 are secured
together such as by screws 138 that extend through components
135-137, threading into the member 135. The illustrated cup-forming
bottom member 135 includes a cup shaped portion that fits partially
into the container 121 and forms a pocket at a top of the container
121 for holding an amount of the paste 122. The pocket helps keep
the paste 122 fresh between uses (i.e., it reduces escape of
volatiles), and helps keep the paste 122 that will not be used for
some time (i.e., the paste 122 in a lower part of the container
121) in a more contained and separated area. It is contemplated
that the cup-shaped portion may have a diameter close in size to
the container 121 such that an O-ring seal 131 is not required, or
alternatively may include an O-ring seal 131 that prevents leakage
of paste 122 between the top member 135 and the container 121.
Nonetheless, it is noted that the present arrangement does not
place the paste 122 in compression, so there is minimal reason to
generate leakage. Notably, holes 135' and/or 135'' (FIG. 17) extend
through a bottom of the cup-shaped portion and/or through the
center shaft 132 to allow paste 122 to flow from the lower portion
of the container 121 into the cup-shaped portion of the cup-forming
top member 135 when the top assembly 123 (i.e., shaft 132) is
rotated to cause the piston 130 to move upwardly.
[0064] The components 136-137 include aligned holes 124' and 124''
(FIG. 20) that form the application hole 124, with the hole 124' in
the resilient layer 136 being slightly smaller than the aligned
hole 124'' in the top plate 137. (The specific undersized amount of
the smaller hole will depend on the material being dispensed,
characteristics of the flexible layer, and other functional and
user preferences.) The slightly smaller size of the hole in the
resilient layer 136 allows marginal material of the resilient layer
136 around the hole 124 to act as a flexible wiper, thus wiping
excess paste 122 off of the threaded shaft 127 from the fastener
128 as the fastener 128 is removed. By this arrangement, the
remaining paste 122 left on the shaft 127 (see FIG. 17) has a
limited thickness filling the space between the threads and having
a thickness dimension about equal to the threads of the fastener
128, yet the paste 122 is very uniformly distributed. Thus, by this
arrangement, the threaded shaft 127 of the fastener 128 can be
extended through the application hole 124 and be covered with the
paste 122. When removed, the resilient layer 136 wipes off excess
paste 122 from the shaft 127, leaving a layer of paste 122 of
limited thickness on the threaded shaft 127. Thus, a minimum amount
of the paste 122 is applied, yet it is applied very uniformly,
cleanly, and completely onto the desired surface area of the
threaded shaft 127.
[0065] In the present arrangement of FIGS. 17-21, the holes in the
resilient layer are smaller than the aligned holes in the rigid
metal parts of the top member 123 so that wipers are formed with
adequate length to properly function and "wipe along" threads on
the threaded shaft of the fastener. Also, the difference in sizes
is such that the wiper portion is not sheared off as a fastener is
extended through the hole and into the paste. For example, the
illustrated resilient layer 136 can be made of a rubber material
that is about 1/16'' thick or slightly less, and would have a hole
124' of about 1/8 inch diameter, while the hole 124'' would have a
5/16'' diameter hole for receiving a bolt of about 1/4'' to 3/16''
diameter. This allows the marginal material in the resilient layer
136 to flex and form a wiper that extends partially along the shaft
137 as the fastener 128 is pressed into and then pulled out of the
paste 122. Notably, in FIG. 17, the resilient layer 136 includes an
edge located between the container 121 and the top plate at a place
where it can affect the force required to rotate the top assembly
123, if so desired.
[0066] It is contemplated that the container apparatus 120 further
can include a lid/cover 140 (FIG. 20) with lip 141 shaped to
sealingly cover a top of the container apparatus 120. By covering
the container 121, the paste-access holes 124, 125, 126 are
covered, which prevents volatiles from escaping from the paste 122
and also prevents debris from entering the paste 122 through any of
the paste-access holes 124, 125, 126. The illustrated cover 140
(FIG. 20A) includes a downwardly-facing recess formed by a top 140'
and a circumferential lip 141. The lip 141 can be designed to
sealingly engage an outer edge of the resilient layer 136 to create
a sealed engagement. Alternatively, a cover 140' (FIG. 20A) can
include an O-ring seal similar to the O-ring 145B (FIG. 21A)
positioned either in the underside surface of lip 141 in a position
to both hold the cover 140 on the container 121 and also provide
the sealing engagement. A small air relief hole can be provided
through the lip 141 if such high vacuum is created preventing easy
removal of the cover 140.
[0067] It is contemplated that modifications can be made to the
present apparatus. For example, FIG. 20A shows a modified container
apparatus 120A where the top member 135A is modified to eliminate
the cup-forming area. The bolt-receiving holes 124A-126A extend
straight through into the paste-containing area immediately above
the piston. Also, a groove is formed so that an O-ring 145A fits
between the top member 135A and the container 121A to sealingly
engage same. Specifically, in FIG. 20A, the bottom member 135A of
top assembly 123A includes a center portion 135A'' that is
sufficient in depth to extend into the container 121A. An O-ring
seal 145A on the outer surface of the bottom member 135A engages
the inner surface of the container 121A. The O-ring seal 145A may
be important to reduce loss of volatiles in the paste 122A due to
the short distance of adjacent surfaces between the top assembly
and the container 121A. As noted, in the arrangement of FIG. 20A,
the application holes 124A-126A extend through the bottom member
135A directly into a main portion of the container 121A, the piston
(130) being below the paste.
[0068] The container apparatus 120B of FIG. 21 is similar to FIG.
20A, but in FIG. 21, the top member 135B includes an outer
circumferential lip 150B that extends downwardly around an outside
of the top of the container 121B. The O-ring seal 145B is located
between the lip 150B and the container 121B on an outboard side of
the container 121B. The center shaft 132B extends from the bottom
member 135B as in previous descriptions above. Notably, in FIGS.
20A, 21, 21A, the resilient layer is located at a place where it
does not affect the force required to rotate the top assembly 123B.
Notably, in the illustrated arrangement, a breather hole is
included in a bottom of the container to prevent a vacuum as the
piston is raised. The breather hole can be in a side or bottom of
the container.
[0069] FIGS. 22-23 illustrate a filling system including a flexible
tube of paste 160 (filled with replacement paste for filling the
container, such as anti-seize paste, or toothpaste, or other paste)
with a male threaded end 161, and an elongated filler tube 162 with
a female end 163 for threadably engaging the male threaded end 161.
The filler tube has tube section 164 with a length and size
sufficient to extend through one of the dispensing holes in the
container and to extend to a bottom of the container so that refill
paste material squeezed from the flexible tube is deposited near a
bottom of the container.
[0070] FIG. 23 is a perspective view showing the flexible tube 160
of paste attached to the fill tube 162, with the fill tube 162
positioned with its tube section 164 extending through hole 124 in
the apparatus 120 into the container 121. A T-shaped winding tool
170 works particularly well for winding up flexible tube 160. The
tool 170 includes a transverse handle 171 and finger 172 that
extend perpendicular to handle 171 and that define a slot
therebetween for receiving the free end of the flexible tube 160.
The flexible tube 160 is not unlike a tube of tooth paste. By
rotating the handle 171 in direction 173, the flexible tube 160
winds up from its free end toward its threaded end 161. Due to the
way that this works mechanically and compressively from the free
end of the flexible tube 160, this action advantageously and very
efficiently squeezes almost all of the paste 122 from the
paste-filled flexible tube 160 into the container 121.
[0071] Thus, a container apparatus for dispensing a paste onto a
fastener includes a container adapted to hold a paste and including
an open top, and a top member on the container including
paste-access holes and a resilient wiper with a flexible wiping
edge for wiping excess material from a fastener as the fastener is
removed from one of the paste-access holes after dipping into the
paste to keep the excess material in the container. By this
arrangement, the shaft of the fastener can be extended into the
paste and be covered with the paste and, when removed, a layer of
the paste of limited thickness is left on the shaft. In one form,
the wiping edge is part of a resilient layer forming part of the
top member and includes marginal material forming a flexible
wiper(s) around a hole(s) in a rigid plate part of the top
member.
[0072] Also, a method of applying paste to a threaded shaft of a
fastener comprises steps of: providing a container holding paste
and including an open top; and providing a top member for covering
the container, the top member having a paste-access hole sized and
being adapted to closely receive the threaded shaft of a fastener.
The method further includes extending the threaded shaft of the
fastener through the hole and into the paste to thus cover a
portion of the threaded shaft with the paste, and then removing the
threaded shaft such that, when removed, a layer of paste of limited
thickness remains on the threaded shaft.
[0073] Also, a method of applying a paste to a shaft of a fastener
comprises steps of providing a container holding paste and
including a top, providing a top member for partially covering the
container, the top member including a flexible wiper, and dipping
the fastener into the paste and then wiping excess material from a
shaft of the fastener on the wiper to thus leave a layer of paste
of limited thickness remaining on the shaft.
[0074] It is contemplated that a wide variety of different pastes
and viscous materials can be handled by the present apparatus and
system, including anti-seize pastes and compounds, greases,
lubricants, thick and/or viscous materials such as plumber's putty,
and also non-toxic items such as tooth paste.
Combination Container Apparatus
[0075] A container apparatus 220 (FIGS. 1-13) combines concepts in
the brush-type container apparatus 10 with concepts in the
bolt-covering-type container apparatus 120, and further integrates
a twist-close feature for closing bolt-receiving holes such that a
separate cover is not necessary to eliminate loss of volatiles from
the paste.
[0076] The modified container apparatus 220 (FIGS. 1-8) for
dispensing a paste onto threaded fasteners includes a container 221
adapted to hold a paste 222 (such as anti-seize paste compound) and
to present same for coating a shafted fastener and/or for coating
the brush end of a brush applicator. The container 221 includes a
top end defining an open area which receives a top assembly 223.
The top assembly 223 includes a top plate (top member) 237, a
wipe-forming flexible layer 236, and a wiper retainer 236'. The top
plate 237, flexible layer 236, and retainer 236' have one or more
bolt-receiving paste-access holes (four outer differently-sized
paste-access holes including holes 224, 224A, 225, 226 being
illustrated), each sized and adapted to closely receive a
particularly-sized shaft of a fastener or bolt, such as threaded
shaft 227 of fastener 228. It is contemplated that more or less
paste-access holes can be provided, and that different diameters
can be provided. The illustrated hole 224 is for 1/4- 3/16 inch
diameter fasteners, hole 225 is for 5/16-3/8 inch diameter
fasteners, and hole 226 being for 1/2- 7/16 inch diameter
fasteners. The flexible layer 236 defines holes that align with
holes 224-226, but which are slightly smaller in size such that the
flexible layer 236 acts as a wiper at each hole location, thus
preventing excess paste from remaining on the shafts as the
fasteners are pulled out of the holes.
[0077] A piston 230 (FIGS. 7-8) is positioned in the container 221
and includes an O-ring seal 231 in an annular groove for sealingly
slidably engaging an inside surface of the container 221. A tubular
center shaft member 232 is threaded into, fixed to and extends
downward from a bottom of the top member 235 and includes threads
that threadably engage a center of the piston 230. (Shaft member
232 is not unlike shaft 50 and 132 described above.) The lower end
of the illustrated shaft member 232 abuts a bottom of the container
221, and can be rotatably attached to a bottom of the container
such as by an inwardly-formed annular lip 221' (FIG. 7) on the
container 221 that engages an annular channel near a bottom of the
shaft member 232. A screw can be used to secure the shaft member
232 to a center of the container's bottom, if desired. (See
potential screw location 221'' in FIG. 7. See also FIGS. 7A-7C, 15,
17, and/or 22 for other configurations.)
[0078] Handled applicator 240 (FIGS. 6-7) includes a handle-forming
end 241 and an applicator brush end including bristles 242.
Applicator 240 is shaped to fit closely into the center
paste-access hole 232' of the tubular shaft 232. Various
configurations are contemplated. The illustrated applicator 240
includes an O ring seal 243 for sealingly engaging an inner surface
of the tubular shaft 232. Also, a middle portion of the applicator
(i.e., between a lower end of the handle 241 and above the bristles
242 has a frustoconical shape adapted to snugly engage a mating
frustoconical shape at a top of the bore in tubular shaft 232.
[0079] As noted above, the top assembly 223 includes a top plate
(top member) 237, a wipe-forming flexible layer 236, and a wiper
retainer 236'. The illustrated top plate 237 (FIGS. 3-3C) includes
two arcuate slots 245 on its bottom surface, and the wiper retainer
236' includes a pair of protrusions 246 that fit into the slots
245. When rotated to an open position (see FIGS. 3B, 3C), the
protrusions 246 engage a first end of the slots 245 which locates
the components 236, 236' and 237 so that the holes in each of
components 236, 236' and 237 align. When rotated to a closed
position (see FIGS. 3, 3A), the protrusions 246 engage a second end
of the slots 245 so that the holes in components 236 and 237
misalign and the holes are thus closed. The protrusions 246 extend
through holes in the flexible layer 236 such that the flexible
layer 236 moves simultaneous with the wiper retainer 236'. By this
arrangement, the holes 224, 224A, 225, 226 can be selectively
closed (so that volatiles do not evaporate and also so that dirt
and debris do not fall into the holes 224-226 during non-use) and
selectively opened (so that the holes 224-226 can be accessed by
fasteners for coating their threads).
[0080] Notably, in the tubular shaft 232 is not unlike the shaft 50
(FIG. 14B), but the tubular shaft 232 includes a radial passageway
250 (similar to hole 86 in tubular shaft 54, FIG. 14B) that allows
paste to move into the hole 232' within the tubular shaft 232.
Unlike hole 86 in shaft 54, the radial passageway 250 on tubular
shaft 232 is located on the shaft so that paste material can flow
from above the piston 230 into a middle of the hole 232'. By
keeping the paste on a top of the piston 230, adjustment of the
piston causes the paste to move toward the holes 224-226 and also
to move into the hole 232' in tubular shaft 232, thus refilling
(replenishing) the paste in both locations.
[0081] As noted above, when top member 235 is gripped to rotate the
top assembly 223 (235/236/236') and then rotated a short distance
(for example, about 30 to 45 degrees in a clockwise direction,
compare FIGS. 2-3), the top member 235 rotates while the flexible
layer 236 and the retainer 236' do not. This dissimilar movement
causes the holes in retainer 236' to misalign with the paste-access
holes 224-226 in the top member 235 . . . which closes (i.e.,
sealingly covers) the paste-access holes 224-226. This short
dissimilar movement of the top member 235 to the retainer 236' (and
flexible layer 236) is controlled by short arcuate grooves 245 on a
bottom of the top member 235 which are engaged by protruding pins
246 on the retainer 236'. The pins 246 extend through mating holes
in the flexible layer 236 and fit into the grooves 279. During the
movement along path (i.e., the 30-45 degrees), the pins 246 move
between ends of the grooves 245. Once the pins 246 bottom out on an
end of the grooves 245 and the top assembly 223 is further rotated,
the shaft 232 rotates while the piston 230 resists rotation due to
O-ring 231. This causes the piston 230 to move vertically on the
threaded shaft 232. For example, when the top assembly 223 is
rotated clockwise (as viewed from above), it moves the paste 222
toward the top of the container 221, causing the paste to move
close toward the holes 224-226 and also causing paste to flow into
the paste-access hole occupied by the bristled end of the brush
applicator. The reverse rotation causes the piston to move
downwardly (such as when getting ready to refill the container).
Notably, the seal 231 frictionally engages the wall of the
container 221 when the assembly 223 is rotated, such that the
piston 230 does not simply rotatingly spin as the top assembly 223
is rotated, but instead it threadingly "walks" up the threaded
shaft. Thus, the paste 222 can be easily moved up to be up against
(or closely under) the application holes 224-226 without forcing
the paste 222 out of the holes 224-226.
[0082] In one alternative, it is contemplated that an apparatus
similar to apparatus 10, 120, or 220) can include a single top
paste-access hole in its tubular shaft that is shaped to removably
receive a brush applicator and further, when the applicator is
removed, is shaped to receive a shaft of a threaded fastener for
coating the shaft with a thin layer of paste material.
[0083] The foregoing description merely explains and illustrates
the invention. The invention is not limited thereto, except insofar
as the appended claims are so limited, since people skilled in this
art who have the disclosure before them will be able to make
modifications without departing from the scope of the
invention.
* * * * *