U.S. patent application number 11/051421 was filed with the patent office on 2006-08-10 for post-to-base attachment.
Invention is credited to Jeffrey D. Carnevali.
Application Number | 20060175595 11/051421 |
Document ID | / |
Family ID | 36779065 |
Filed Date | 2006-08-10 |
United States Patent
Application |
20060175595 |
Kind Code |
A1 |
Carnevali; Jeffrey D. |
August 10, 2006 |
Post-to-base attachment
Abstract
A post-and-base apparatus, including a substantially rigid base
formed with a mounting surface and an opposing surface thereon, and
an aperture formed into the mounting surface, the aperture having a
non-round interior sidewall surface extending at least partially
through the body toward the opposing surface. A substantially rigid
post is formed with a non-round locking structure adjacent to a
first end thereof, the non-round locking structure forming an
external sidewall surface that is structured to fit into the
non-round aperture in a rotational locking relationship relative
thereto. A body of substantially rigid load-bearing material is
formed an aperture, and a fastener is coupled between the locking
structure and the opposing surface of the base with the body of
load-bearing material interposed there between.
Inventors: |
Carnevali; Jeffrey D.;
(Seattle, WA) |
Correspondence
Address: |
CHARLES J RUPNICK
PO BOX 46752
SEATTLE
WA
98146
US
|
Family ID: |
36779065 |
Appl. No.: |
11/051421 |
Filed: |
February 4, 2005 |
Current U.S.
Class: |
256/65.14 |
Current CPC
Class: |
E04H 12/2261
20130101 |
Class at
Publication: |
256/065.14 |
International
Class: |
E04H 17/00 20060101
E04H017/00 |
Claims
1. A post-and-base apparatus, comprising: a substantially rigid
base having a body of substantially rigid material formed with a
mounting surface thereon and an opposing surface opposite from the
mounting surface, and an aperture formed into the mounting surface
and having a non-round interior sidewall surface extending at least
partially through the body toward the opposing surface; a
substantially rigid post having a body of substantially rigid
material formed with a non-round locking structure adjacent to a
first end thereof, the non-round locking structure forming an
external sidewall surface that is structured to fit into the
non-round aperture in a rotational locking relationship relative
thereto; a body of substantially rigid load-bearing material formed
with a bearing surface thereon and an aperture formed through the
body of material and the bearing surface; and a fastener coupled
between the locking structure and the opposing surface of the base
with the body of load-bearing material interposed there between,
the fastener securing the locking structure of the post within the
aperture of the base with the post being rotationally fixed
relative to the base.
2. The apparatus of claim 1 wherein the post further comprises a
substantially planar end surface adjacent to the first end thereof,
the substantially planar end surface having the non-round locking
structure being raised relative thereto, the substantially planar
end surface being sized relatively larger than the aperture formed
into the mounting surface of the base.
3. The apparatus of claim 2 wherein the non-round aperture extends
fully through the base between the mounting surface and the
opposing surface thereof
4. The apparatus of claim 3 wherein the body of substantially rigid
load-bearing material further comprises a substantially rigid
washer positioned between a clamping portion of the fastener and
the opposing surface of the base.
5. The apparatus of claim 2 wherein the non-round aperture further
comprises a plurality of substantially straight and planar sidewall
surfaces, the sidewall surfaces being relatively angularly oriented
with adjacent sidewall surfaces forming substantially linear
intersections therebetween; and the non-round locking structure
further comprises a like plurality of substantially straight and
planar sidewall surfaces, the sidewall surfaces being relatively
angularly oriented with adjacent sidewall surfaces forming
substantially linear intersections therebetween.
6. The apparatus of claim 5 wherein the non-round locking structure
further comprises a threaded bore formed in the first end thereof
substantially perpendicular to the mounting surface of the
base.
7. The apparatus of claim 6 wherein the fastener further comprises
one of a bolt, a screw and a threaded stud.
8. The apparatus of claim 6 wherein the post further comprises a
substantially part-spherical coupler formed adjacent a second end
thereof opposite from the first end, the part-spherical coupler
being formed of a resiliently pressure-deformable material.
9. The apparatus of claim 1 wherein the non-round aperture extends
through the base only between the mounting surface and an
intervening surface part way between the mounting surface and the
opposing surface thereof, the intervening surface being formed with
a clearance aperture structured to receive the fastener there
through; and wherein the body of substantially rigid load-bearing
material further comprises a portion of the substantially rigid
material of the body of the base between the intervening surface
and the opposing surface.
10. The apparatus of claim 1 wherein the non-round aperture further
comprises a plurality of substantially straight and planar sidewall
surfaces, the sidewall surfaces being angularly inclined relative
to the mounting surface of the base plate and being angularly
oriented relative to adjacent sidewall surfaces and forming
substantially linear intersections therebetween; and the non-round
locking structure further comprises a like plurality of
substantially straight and planar sidewall surfaces, the sidewall
surfaces being similarly angularly inclined relative to the first
end of the post and being similarly angularly oriented relative to
adjacent sidewall surfaces and forming substantially linear
intersections therebetween.
11. A post-and-base assembly, comprising: a substantially rigid
base plate having a body of substantially rigid material formed
with a mounting surface thereon and an opposing surface opposite
from the mounting surface, and a polygonal aperture formed into the
mounting surface and having a plurality of interior sidewall
surfaces extending at least partially through the body toward the
opposing surface; a substantially rigid post having a body of
substantially rigid material formed with a polygonal locking
structure projected from a first end thereof, the polygonal locking
structure having a plurality of external sidewall surfaces and
being structured to fit into the polygonal aperture and nest
therewith; a fastener coupled into the locking structure for
securing the post relative to the mounting surface of the base
plate; and a body of substantially rigid load-bearing material
formed with a bearing surface thereon and a clearance aperture
formed through the body of material and the bearing surface and
sized to pass the fastener there through.
12. The assembly of claim 11 wherein the interior sidewall surfaces
of the polygonal aperture further comprise surfaces that are
substantially perpendicular to the mounting surface.
13. The assembly of claim 11 wherein the interior sidewall surfaces
of the polygonal aperture further extend entirely through the body
between the mounting surface and the opposing surface; and body of
substantially rigid load-bearing material further comprises a
conventional metal washer interposed between the opposing surface
of the base plate and a clamping portion of the fastener.
14. The assembly of claim 11 wherein the interior sidewall surfaces
of the polygonal aperture further extend to an intervening surface
of the body between the mounting surface and the opposing surface;
and body of substantially rigid load-bearing material further
comprises a portion of the body interposed between the intervening
surface and the opposing surface of the base plate.
15. A method of forming a post-and-base apparatus, the method
comprising: of substantially rigid material forming a base having a
body with a mounting surface formed thereon and an opposing surface
formed opposite from the mounting surface; forming a non-round
cavity into the body of the base having a non-round opening in the
mounting surface and having a non-round interior sidewall surface
extending at least partially through the body toward the opposing
surface; of substantially rigid material forming a substantially
rigid post having a body with a non-round locking structure
adjacent to a first end thereof, the non-round locking structure
being formed of an external sidewall surface that is structured to
fit into the non-round cavity; inserting the non-round locking
structure of the post through the non-round opening in the mounting
surface of the base into the non-round cavity in the body of the
base in a substantially fixed rotational relationship therewith;
and drawing the first end of the post into a secure relationship
with the mounting surface of the base.
16. The method of claim 15 wherein forming a non-round cavity into
the body of the base further comprises forming a polygonal opening
in the mounting surface and forming a plurality of relatively
angularly oriented and intersecting substantially planar interior
sidewall surfaces.
17. The method of claim 16 wherein forming a non-round cavity into
the body of the base further comprises forming a floor of the
cavity as an intervening surface part way between the mounting
surface and the opposing surface; and further comprising forming a
clearance aperture through the floor of the cavity extending
between the intervening surface and the opposing surface.
18. The method of claim 16 wherein forming a plurality of
relatively angularly oriented and intersecting substantially planar
interior sidewall surfaces further comprises forming the plurality
of relatively angularly oriented and intersecting substantially
planar interior sidewall surfaces entirely through a portion of the
body of the base between the mounting surface and the opposing
surface.
19. The method of claim 18 wherein forming a substantially rigid
post having a body with a non-round locking structure adjacent to a
first end thereof further comprises forming a substantially planar
surface adjacent to the first end of the body of the post and
forming the non-round locking structure as a raised structure
relative to the substantially planar surface; and wherein inserting
the non-round locking structure of the post through the non-round
opening in the mounting surface of the base into the non-round
cavity in the body of the base further comprises installing the
substantially planar surface adjacent to the first end of the body
of the post substantially flush against a portion of the mounting
surface of the base surrounding the non-round opening therein.
20. The method of claim 15 wherein drawing the first end of the
post into a secure relationship with the mounting surface of the
base further comprises threading a threaded fastener between the
non-round locking structure of the post and a body of substantially
rigid load-bearing material formed with a bearing surface thereon
and formed with a clearance aperture through the body of material
and the bearing surface and sized to pass the fastener there
through.
Description
FIELD OF THE INVENTION
[0001] The present invention relates to a means for attaching a
post to a base, and in particular to a means for permanently
attaching a post perpendicular to a base and rotationally fixing
the post relative to the base.
BACKGROUND OF THE INVENTION
[0002] Many methods and devices are known for attaching posts to
bases. Those methods that permanently attach the post and fix it
rotationally relative to the base include, for example, soldering,
welding, gluing, and bolting or screwing the post to the base. The
first three, soldering, welding, and gluing, all involve a chemical
bond. Known forms of the latter, bolting or screwing the post to
the base, require multiple fasteners to additionally fix the post
rotationally relative to the base. These methods thus require the
materials, i.e., multiple bolts or screws, and both time and labor
to install the multiple fasteners. Additionally, the post must
present a large enough footprint on the base to receive the
multiple fasteners.
SUMMARY OF THE INVENTION
[0003] The present invention overcomes the manufacturing and post
size limitations of the prior art by providing a faster, more
efficient method for permanently attaching a post perpendicular to
a base while simultaneously fixing the post rotationally relative
to the base.
[0004] Large size posts and bases are difficult to mold integrally
in a single mold. Furthermore, when large sized, the integrally
molded post and base combination are difficult to fit into
secondary machines for secondary operations, such as over-molding
and vulcanizing a nitrile rubber or other resiliently pressure
deformable coupler onto an end of the post opposite from the base.
Therefore, although the invention is practicable using any size
post with any size base plate, according to the present invention,
a combination post and base plate is formed of a base plate having
a body of substantially rigid material, the body being formed with
a mounting surface on one side and an opposing surface on an
opposite side from the mounting surface. A polygonal or other
non-round aperture is formed into the mounting surface and has a
plurality of interior sidewall surfaces that extend at least
partially through the body toward the opposing surface. A post
having a body of substantially rigid material is formed with a
polygonal or other non-round locking structure projected from a
first end thereof, the polygonal locking structure has a plurality
of external sidewall surfaces and is structured to fit into the
aperture in the body of the base plate and to nest therewith. A
fastener is coupled into the locking structure for securing the
post relative to the mounting surface of the base plate. A body of
substantially rigid load-bearing material is interposed between the
opposing surface of the body and a clamping portion of the
fastener, the body of load-bearing material is formed with a
bearing surface thereon for engaging the clamping portion of the
fastener and a clearance aperture that is formed through the body
of material and the bearing surface and is sized to pass the
fastener there through.
[0005] According to different aspects of the invention, plurality
of interior sidewall surfaces of the polygonal or other non-round
aperture extend either entirely through the body to the opposing
surface, or only partially through the body to an intervening
surface part way through the body, whereby the plurality of
interior sidewall surfaces of the polygonal or other non-round
aperture form a cavity that extends into the body of the base plate
from the mounting surface. When the plurality of interior sidewall
surfaces of the polygonal or other non-round aperture extend either
entirely through the body to the opposing surface, the body of
load-bearing material interposed between the opposing surface of
the body and a clamping portion of the fastener is, for example, a
metal washer. In the second case where the plurality of interior
sidewall surfaces of the polygonal or other non-round aperture form
a cavity that extends into the body of the base plate, the body of
load-bearing material interposed between the opposing surface of
the body and a clamping portion of the fastener is a portion of the
base plate material having an aperture sized to pass the fastener
there through.
[0006] According to different aspects of the invention, plurality
of interior sidewall surfaces of the polygonal or other non-round
aperture are either substantially perpendicular to the mounting
surface of the base plate, or are inclined relative thereto. In
either case, the polygonal or other non-round locking structure
projected from a first end of the post is similarly structured to
mate with aperture in the base plate and to nest therewith.
[0007] According to different aspects of the invention, the
fastener is a male threaded member, such as a bolt or screw, and
the clamping portion of the fastener is provided by a head portion
formed on one end thereof A female threaded bore is provided in an
end surface of the locking structure of the post to receive the
male threaded member. Alternatively, the fastener is a male
threaded stud coupled to the end surface of the locking structure
of the post and receives a mating female threaded member or nut
that provides the clamping portion of the fastener.
[0008] According to one aspect of the invention, a nitrile rubber
or other resiliently pressure deformable coupler is vulcanized onto
an end of the post opposite from the base.
[0009] Other aspects of the invention are detailed herein.
BRIEF DESCRIPTION OF THE DRAWINGS
[0010] The foregoing aspects and many of the attendant advantages
of this invention will become more readily appreciated as the same
becomes better understood by reference to the following detailed
description, when taken in conjunction with the accompanying
drawings, wherein:
[0011] FIG. 1 is a bottom perspective view of the post-to-base
attachment of the invention;
[0012] FIG. 2 is a bottom perspective view of an alternative
embodiment of the post-to-base attachment of the invention;
[0013] FIG. 3 is a bottom perspective exploded view of the
post-to-base attachment of the invention;
[0014] FIG. 4 is a top perspective exploded view that illustrates
another embodiment of the post-to-base attachment of the
invention;
[0015] FIG. 5 is a downward partial perspective exploded view that
illustrates another alternative embodiment of the post-to-base
attachment of the invention; and
[0016] FIG. 6 is a downward perspective exploded view that
illustrates yet another alternative embodiment of the post-to-base
attachment of the invention.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENT
[0017] In the Figures, like numerals indicate like elements.
[0018] FIG. 1 illustrates the present invention by example and
without limitation embodied as an assembly 10 of a post 12 attached
to a base plate 14. The post 12 and base plate 14 are shown, by
example and without limitation, as round or cylindrical, and flat
and rectangular, respectively. However, the practitioner will
easily recognize by the follow description of the present
invention, that the method of the invention is applicable to any
shape of both post and base plate. Therefore, any shape of both
post and base plate is considered to be equivalent to the shapes
illustrated, and Other conventionally and unconventionally shaped
post 12 and base plate 14 are also contemplated and may be
substituted without deviating from the scope and intent of the
present invention. According to one embodiment of the present
invention, the post 12 and base plate 14 are both formed of a rigid
material, such as but not limited to metal or plastic.
[0019] FIG. 1 illustrates the post 12 as a short and round or
cylindrical rod having a substantially part-spherical coupler 16
formed on one end 18 opposite from the base plate 14. By example
and without limitation, the part-spherical coupler 16 is formed of
a resiliently pressure-deformable material, such as a nitrile
rubber, although another resiliently pressure-deformable material
may be substituted without deviating from the scope and intent of
the present invention. The coupler 16 is bonded to the end 18 of
the post 12, by example and without limitation, by over-molding and
vulcanization, although another bonding process, such as adhesive
bonding, may be substituted without deviating from the scope and
intent of the present invention. Thus, the coupler 16 is, by
example and without limitation, a coupler of the type disclosed by
Carnevali, the inventor of the present invention, in U.S. Pat. No.
5,845,885, "Universally Positionable Mounting Device," issued Dec.
8, 1998, the complete disclosure of which is incorporated herein by
reference. A mechanical fastener 20, such as but not limited to a
Philips flat head machine screw, a socket head screw, a flat head
screw, a fillister head screw, a round head screw, an oval head
screw, a hexagon "hex" head screw, or another screw-type threaded
fastener, is used to couple the post 12 to the base plate 14.
Another non-threaded fastener, such as a rivet, is optionally
substituted for the screw fastener illustrated without deviating
from the scope and intent of the present invention. Although one
fastener 20 is illustrated, multiple fasteners 20 are optionally
provided, without deviating from the scope and intent of the
present invention. An substantially rigid intermediate washer 22,
such as but not limited to a conventional metal finish washer, a
flat washer, a lock washer, or a fender washer, is optionally
provided between the fastener head 24 and a non-mounting or bottom
surface 26 of the base plate 14 opposite from the post 12. The
washer 22 operates as a body of substantially rigid load-bearing
material against which the fastener head 24 operates as a clamping
portion of the fastener 20 that acts to secure the post 12 to the
base plate 14. According to one embodiment of the present
invention, the fastener 20 is a Philips flat head machine screw
used in combination with a finish washer 22.
[0020] The washer 22 is optionally omitted from the assembly 10,
without deviating from the scope and intent of the present
invention.
[0021] Optionally, one or more fastener apertures 28 are provided
through the base plate 14 for fastening to an external surface.
Alternatively, the apertures 28 are deleted, and the base plate 14
is secured to an external surface using a method, such as
soldering, brazing, welding, or gluing, that does not require the
apertures 28.
[0022] FIG. 2 illustrates an alternative embodiment of the assembly
100 of the present invention, where in one or more stand-off
spacers 30 are provided on the bottom surface 26 for offsetting the
bottom surface 26 from an external surface a sufficient distance to
adequate provide clearance for the head 24 of the fastener 20. The
base plate 14 is optionally formed by molding or forging, whereby
the spacers 30 are optionally integral with the base plate 14. The
spacers 30 optionally include apertures 32 there through as
clearance for the fasteners 20. Accordingly, the apertures 32 are
substantially aligned with the apertures 28 through the base plate
14.
[0023] FIG. 3 is a bottom perspective exploded view that
illustrates the practice of the post-to-base attachment of the
present invention. The base plate 14 is formed according to the
following steps which are optionally performed in any convenient
order and are explained in the present sequence, by example and
without limitation, to demonstrate the invention. Alternate
sequences are also contemplated and may be substituted without
deviating from the scope and intent of the present invention.
According to one embodiment of the present invention, the base
plate is formed by molding, cutting, stamping, machining, forging,
casting or another conventional forming process appropriate for use
with the material selected for practicing the invention. If formed
in a single operation, such as molding, the base plate 14 is
simultaneously formed with a body 34 and a non-round or
non-cylindrical aperture 36 that optionally extends entirely
through the body 34 between the bottom surface 26 and a mounting or
top surface 38 upon which the post 12 is mounted. The fastener
apertures 28, if present, and the stand-off spacers 30, also if
present, are formed simultaneously formed with the body 34 and
non-round aperture 36. Else, the body 34, non-round aperture 36,
fastener apertures 28, if present, and the stand-off spacers 30,
also if present, are formed in any order or combination that is
convenient for the practitioner and appropriate for the material
selected for practicing the invention.
[0024] The size, shape, material and other physical properties of
the body 34 are not relevant to practicing the invention. However,
according to one embodiment of the present invention, the body 34
is substantially rigid and is formed of injection molded plastic.
The non-round aperture 36 is formed through a portion of the body
34 at any desired location. The non-round aperture 36 is formed in
any selected shape, including triangular, rectangular, square,
diamond, parallelogram, pentagonal, hexagonal, heptagonal,
octagonal, or having any larger number of straight and
substantially flat or planar interior sidewall surfaces 40 that are
optionally formed substantially perpendicular to the mounting
surface 38, with adjacent sidewall surfaces 40 forming
substantially linear intersections 42. Optionally, the non-round
aperture 36 is curved, including elliptical, kidney, heart, wave,
or free-form shapes. The only limitation on the non-round aperture
36 is that it is not round. Optionally, the non-round aperture 36
is a combination of straight and curved portions, for example,
straight sides having curved intersections, or curved sides having
straight line intersections, or combinations of straight and curved
sides, such as half-circle or round-topped square or long straight
sides joined at their ends by half-circle sidewalls. However, for
ease of manufacturing, the non-round aperture 36 is formed with the
multiple straight and intersecting interior sidewalls 40.
[0025] The post 12 is formed having a body 43 formed of a
substantially rigid material according to the following steps which
are optionally performed in any convenient order and are explained
in the present sequence, by example and without limitation, to
demonstrate the invention. Alternate sequences are also
contemplated and may be substituted without deviating from the
scope and intent of the present invention. According to one
embodiment of the present invention, the post 12 is formed by
molding, cutting, machining, forging, casting or another
conventional forming process appropriate for use with the
substantially rigid material selected for practicing the invention.
A base end 44 of the post 12 is formed with a substantially flat or
planar end surface 46 that is sized at least larger than the
minimum width of the aperture 36, that is to say larger than a
distance between interior flat sidewalls 40 on opposite sides of
the aperture 36 through the base plate body 34, whereby the base
end 44 of the post 12 cannot enter into the smaller aperture 36.
The top surface 38 of the base plate 14 thus operates as a stop for
the post base end 44 against which the post base end 44 rests.
Optionally, the flat end surface 46 is sized larger the maximum
width of the aperture 36, that is to say larger than the larger
distance between intersections 42 between adjacent flat sidewalls
40 on opposite sides of the aperture 36 through the base plate body
34, whereby the base end 44 of the post 12 completely covers the
aperture 36.
[0026] The flat end surface 46 of the post 12 is embossed with a
raised non-round locking structure 48 that is optionally
substantially flat or planar on its end surface 50. The raised
non-round locking structure 48 is formed with substantially flat or
planar outside or exterior sidewall surfaces 52 that are optionally
formed substantially perpendicular to the planar end surface 46 of
the post 12, with adjacent sidewall surfaces 52 forming
substantially linear intersections 54. The raised non-round locking
structure 48 complements and cooperates with the non-round aperture
36, that is to say the raised non-round locking structure 48 is
slightly smaller overall than the non-round aperture 36, and its
exterior sidewall surfaces 52 are shaped and angularly oriented
substantially identically with the interior flat sidewall surfaces
40 of the non-round aperture 36. Accordingly, the raised non-round
locking structure 48 fits into the aperture 36 with its exterior
sidewall surfaces 52 oriented substantially parallel with the
interior sidewall surfaces 40 of the aperture 36 and intersections
54 of its exterior sidewall surfaces 52 nesting with the
intersections 42 between adjacent flat sidewalls 40 of the
non-round aperture 36. Thus, when the post 12 is mounted on the top
surface of the base plate 14 having the raised locking structure 48
engaged with the non-round aperture 36, as illustrated in FIGS. 1
and 2, the raised non-round locking structure 48 is thus
substantially unable to rotate within the non-round aperture 36 and
the post 12 is substantially rotationally fixed or locked relative
to the base plate 14.
[0027] The raised locking structure 48 is sized the same length or
shorter than the thickness "T" of the base plate 14, at least in
the area surrounding the aperture 36 if the base plate 14 includes
variations in thickness. Therefore, when engaged with the aperture
36 and having the end surface 46 flush against the top surface 38
of the base plate 14, the raised locking structure 48 does not
penetrate all the way through the aperture 36 and does not protrude
from the base plate bottom surface 26.
[0028] Additionally, the end surface 50 of the raised locking
structure 48 is pierced with one or more female threaded bore 56
(one shown) that is or are smaller than the locking structure end
surface 50 so that the female threaded bore 56 lies entirely within
the smallest width of the end surface, that is to say is completely
encompassed by the locking structure exterior sidewall surfaces 52.
According to one embodiment of the present invention, the post 12
is formed of injection molded plastic. When the post 12 is formed
of injection molded plastic or another soft material, such as
aluminum, the threaded bore 56 is optionally structured oversize
relative to the mating fastener 20, and a threaded insert of type
well-known in the art is installed in the bore to provide more
robust threads. The female threaded bore 56 is formed with any
thread type and diameter-pitch combination desired, including but
not limited to Unified and American Standard in coarse, fine,
extra-fine, 8 thread, 12 thread, 16 thread, and in any of the eight
recognized thread classes, including Classes 1A, 2A, 3A, 1B, 2B,
3B, class 2 and class 3. The threads are optionally right-hand or
left-hand. Optionally, the female threaded bore 56 is formed with
threads according to any of the international standards, including
but not limited to Whitworth, British Association, French metric
and International metric thread standards. Optionally, the female
threaded bore 56 is formed with threads according to any of the
power-transmission standards, including but not limited to Acme, 29
degree general purpose, 29 degree stub, 60 degree stub and 10
degree modified square thread standards. Optionally, the female
threaded bore 56 is formed with threads according to any of the
pipe thread standards, including but not limited to American
Standard taper, American Standard straight, and American Standard
Dryseal pipe thread standards.
[0029] The fastener 20 is a screw or bolt or other fastener having
a male thread type and diameter-pitch combination along at least a
portion of its shaft 58 that is structured to mate with the threads
of the female threaded bore 56 in the end surface 50 of the raised
locking structure 48.
[0030] The intermediate washer 22 is formed there through with an
interior aperture 60 that is sized to fit over the male threaded
shaft 58 of the fastener 20, and an outer diameter 62 that is sized
at least larger than the minimum width of the aperture 36, that is
to say the washer outer diameters 62 is sized larger than a
distance between interior flat sidewalls 40 on opposite sides of
the aperture 36 through the base plate body 34, whereby the washer
22 overlaps a portion of the base plate bottom surface 26 adjacent
to the aperture 36 and cannot enter into the aperture 36. The
bottom surface 26 of the base plate 14 thus operates as a bearing
surface for the washer 22 against which a far-side flat surface 64
of the washer 22 rests. Optionally, the flat washer outer diameter
62 is sized larger the maximum width of the aperture 36, that is to
say larger the washer flat surface 64 is sized than the larger
distance between intersections 42 between adjacent flat sidewalls
40 on opposite sides of the aperture 36 through the base plate body
34, whereby the washer far-side flat surface 64 completely covers
the aperture 36.
[0031] The shaft 58 of the fastener 20 is sized long enough to
reach between a near-side surface 66 of the washer 22 and into the
female threaded bore 56 in the end surface 50 of the raised locking
structure 48 of the post 12 to an extent that at least a first two
male threads of the shaft 58 engage a first two female threads of
the threaded bore 56. Optionally, additional male threads of the
shaft 58 engage additional female threads of the threaded bore 56.
The relative lengths of the fastener shaft 58 and threaded bore 56
are coordinated to the extent that, when the raised locking
structure 48 of the post 12 is engaged with the base plate aperture
36 and the post end surface 46 is seated flush against the top
surface 38 of the base plate 14, the threaded fastener 20 is
engaged with the threaded bore 56 such that the head 24 of the
fastener 20 is tightly seated against the near-side surface 66 of
the washer with the far-side washer surface 64 flush and tightly
seated against the bottom surface 26 of the base plate 14 opposite
from the post 12. Thus, the washer 22 operates as a bearing surface
for the fastener head 24 to bear against the bottom surface 26 of
the base plate 14.
[0032] Alternatively, the washer 22 is omitted. For example,
according to one embodiment of the invention, the fastener head 24
is sufficiently large relative to the base plate aperture 36 as to
overlap a portion of the base plate bottom surface 26 adjacent to
the aperture 36 and cannot enter into the aperture 36. The bottom
surface 26 of the base plate 14 thus operates as a bearing surface
for the fastener head 24 against which to rest. In such case, the
relative lengths of the fastener shaft 58 and threaded bore 56 are
coordinated to the extent that, when the raised locking structure
48 of the post 12 is engaged with the base plate aperture 36 and
the post end surface 46 is seated flush against the top surface 38
of the base plate 14, the threaded fastener 20 is engaged with the
threaded bore 56 such that the head 24 of the fastener 20 is flush
and tightly seated directly against the bottom surface 26 of the
base plate 14 opposite from the post 12.
[0033] A thread locking compound, of which several are well-known,
is optionally provided between the threaded fastener 20 and the
threaded bore 56 such that the fastener 20 is rotationally fixed or
locked relative to the bore 56.
[0034] Upon engagement of the raised locking structure 48 of the
post 12 with the base plate aperture 36 and having the post end
surface 46 seated flush against the top surface 38 of the base
plate 14, and the threaded fastener 20 is engaged with the threaded
bore 56, with or without the optional washer 22 in between, the
assembly 10 is complete with the post 12 secure against the top
surface 38 of the base plate 14 and simultaneously rotationally
fixed or locked relative to the base plate 14.
[0035] FIG. 4 is a downward perspective exploded view that
illustrates an alternative embodiment of the assembly 10 of the
post 12 attached to the base plate 14. Accordingly, the non-round
aperture 36 formed in the body 34 of the base plate 14 is
optionally formed as a closed-end cavity that extends only part way
through the body 34 between the top surface 38 upon which the post
12 is mounted through to an intervening surface 68 part way through
the body 34. The non-round aperture 36 is formed in any selected
shape, including by example and without limitation in a rectangular
or square shape having four straight and substantially flat or
planar interior sidewall surfaces 40, with adjacent sidewall
surfaces 40 forming the substantially linear intersections 42. For
example, the non-round aperture 36 is formed with the intervening
surface 68 during a molding or casting operation during which the
base plate 14 is formed. Alternatively, the non-round aperture 36
and intervening surface 68 are formed in a metal base plate 14 by a
secondary operation, such as stamping, forging, or machining.
[0036] An aperture 70 is formed through a remaining thickness of
the body 34 between the intervening surface 68 and the bottom
surface 26. The aperture 70 is structured as a clearance hole for
the fastener 20 to pass through. Floor material 72 of the body 34
remaining between the intervening surface 68 and the bottom surface
26 operates in the same capacity as the washer 22 in the
embodiments of FIGS. 1-3. In other words, the remaining floor
material 72 operates as a body of substantially rigid load-bearing
material having a bearing surface against which the fastener 20
acts to secure the post 12 to the base plate 14. The floor material
72 and the fastener clearance-hole aperture 70 there through permit
the washer 22 to be omitted as an option.
[0037] Optionally, when the floor material 72 is thicker than is
convenient for a desired fastener 20, a counter surface 74, formed
by example and without limitation as a counterbore aperture, is
formed in the bottom surface 26 substantially aligned with the
fastener clearance-hole aperture 70. The counterbore aperture 74,
if present, is sized to at least receive the fastener head 24, and
optionally is sized to further receive the intermediate washer 22,
if present. According to one embodiment of the invention, the
counterbore aperture 74 is deep enough that the fastener head 24 is
completely below the bottom surface 26 when installed in the
fastener clearance-hole aperture 70. The depth of the counterbore
aperture 74 is determined, in combination with the depth of the
non-round aperture 36 to the intervening surface 68 and the
thickness T of the base plate body 34, to ensure that at least a
minimum thickness "t" of the floor material 72 remains between the
intervening surface 68 and a floor 76 of the counterbore aperture
74 to operate as the bearing surface for the fastener head 24, or
washer 22 if present, to bear against the base plate 14 opposite
from the top surface 26. When the fastener 20 is formed with a
conical head 24, such as a Philips flat head machine screw or a
flat head screw, rather than the planar head 24 of the socket head
screw illustrated here, the counter surface 74 is instead formed as
a countersink aperture at an angle selected to cooperate with the
head 24 of the selected fastener 20. The depth of the countersink
aperture 74 is also determined, in combination with the depth of
the non-round aperture 36 to the intervening surface 68 and the
thickness T of the base plate body 34, to ensure that at least the
minimum thickness t of the floor material 72 remains between the
intervening surface 68 and the floor 76 of the countersink aperture
74 to operate as the bearing surface for the fastener head 24, or
washer 22 if present, to bear against the base plate 14 opposite
from the top surface 26.
[0038] The base end 44 of the post 12 is formed with the
substantially flat or planar end surface 46 that is sized at least
larger than the minimum width of the non-round aperture 36, that is
to say larger than a distance between interior flat sidewalls 40 on
opposite sides of the aperture 36 part way through the base plate
body 34, whereby the base end 44 of the post 12 cannot enter into
the smaller aperture 36. The top surface 38 of the base plate 14
thus operates as a stop for the post base end 44 against which the
post base end 44 rests. Optionally, the base end 44 of the post 12
completely covers the aperture 36.
[0039] The flat end surface 46 of the post 12 is embossed with the
raised non-round locking structure 48 that is optionally
substantially flat or planar on its end surface 50. The raised
locking structure 48 is formed with the substantially flat or
planar exterior sidewall surfaces 52 that form substantially linear
intersections 54. The raised non-round locking structure 48
complements and cooperates with the non-round aperture 36, that is
to say the raised locking structure 48 is slightly smaller overall
than the aperture 36, and its exterior sidewall surfaces 52 are
shaped and angularly oriented substantially identically with the
interior flat sidewall surfaces 40 of the aperture 36. Accordingly,
the raised non-round locking structure 48 fits into the non-round
aperture 36 with its exterior sidewall surfaces 52 oriented
substantially parallel with the interior sidewall surfaces 40 of
the non-round aperture 36 and intersections 54 of its exterior
sidewall surfaces 52 nesting with the intersections 42 between
adjacent flat sidewalls 40 of the non-round aperture 36. Thus, when
the post 12 is mounted on the top surface of the base plate 14
having the raised non-round locking structure 48 engaged with the
non-round aperture 36, as illustrated in FIGS. 1 and 2, the raised
non-round locking structure 48 is thus substantially unable to
rotate within the non-round aperture 36 and the post 12 is
substantially rotationally fixed or locked relative to the base
plate 14.
[0040] The raised non-round locking structure 48 is sized the same
length or shorter than a depth "d" of the closed-end non-round
aperture 36. Therefore, when engaged with the non-round aperture 36
and having the end surface 46 flush against the top surface 38 of
the base plate 14, the raised non-round locking structure 48 does
not penetrate all the way into the non-round aperture 36 and does
not engage the intervening surface 68.
[0041] Additionally, the end surface 50 of the raised locking
structure 48 is pierced with the one or more female threaded bore
56 (one shown) that is or are smaller than the locking structure
end surface 50. According to one embodiment of the present
invention, the post 12 is formed of injection molded plastic. When
the post 12 is formed of injection molded plastic or another soft
material, such as brass or aluminum, the threaded bore 56 is
optionally structured oversize relative to the mating fastener 20,
and a threaded insert of type well-known in the art is installed in
the bore to provide more robust female threads.
[0042] According to one embodiment of the present invention, a
planar contact surface is provided on the end surface 46 of the
post 12 by three or more feet 78 that protrude from the end surface
46. The feet 78 form a plane such that the post 12 sits flush
against the top surface 38 of the base plate 14 without rocking
when the top surface 38 is non-planar. Alternatively, the feet 78
protrude from the top surface 38 for the end surface 46 of the post
12 to rest against. It is well-known in the art that providing a
planar surface is easier to accomplish on three small points than
on a larger unbroken surface, such as the area of the top surface
38 where the end surface 46 of the post 12 rests.
[0043] FIG. 5 is a downward partial perspective exploded view that
illustrates another alternative embodiment of the assembly 10 of
the post 12 attached to the base plate 14. Accordingly, the
non-round aperture 36 formed in the body 34 of the base plate 14 is
formed as a closed-end cavity that extends only part way through
the body 34 between the top surface 38 upon which the post 12 is
mounted through to the intervening surface 68 part way through the
body 34. The straight and substantially flat or planar interior
sidewall surfaces 40 of the closed-end non-round aperture 36 form
the substantially linear intersections 42. However, rather than
being formed substantially perpendicular to the mounting surface
38, the interior sidewall surfaces 40 are optionally formed at an
angular incline to the mounting surface 38. When the closed-end
non-round aperture 36 is formed as a square, the interior sidewall
surfaces 40 form a truncated inverse pyramid shape.
[0044] Similarly, the non-round locking structure 48 of the post 12
is formed with the exterior sidewall surfaces 52 and form the
substantially linear intersections 54. However, rather than being
formed substantially perpendicular to the end surface 46 of the
post 12, the exterior sidewall surfaces 52 are optionally formed at
an angular incline to the end surface 46. When the non-round
locking structure 48 is formed as a square, the exterior sidewall
surfaces 52 form a truncated pyramid shape. Accordingly, the
non-round locking structure 48 fits into and mates in the
rotational locking arrangement with the non-round aperture 36.
According to one embodiment of the present invention, the pyramidal
locking structure 48 is wider at its base than the opening into the
inverse pyramidal cavity or aperture 36. The inclined exterior
sidewall surfaces 52 of the pyramidal locking structure 48 engage
the intervening inclined interior sidewall surfaces 40 of the
inverse pyramidal aperture 36 and are drawn flush and tight against
the inclined interior sidewall surfaces 40.
[0045] Alternatively, the base of the raised non-round locking
structure 48 is sized the same length or less than the opening into
the inverse pyramidal cavity or aperture 36. Therefore, when
engaged with the non-round aperture 36 and having the end surface
46 flush against the top surface 38 of the base plate 14, the
inclined exterior sidewall surfaces 52 of the raised pyramidal
locking structure 48 do not engage the inclined interior sidewall
surfaces 40 of inverse pyramidal aperture 36.
[0046] FIG. 5 also illustrates the fastener 20 being configured as
a threaded male stud 80 coupled to the end surface 50 of the raised
locking structure 48 of the post 12. A female threaded member or
nut 82, such as hexagonal "hex" nut, lock nut, wing nut or other
female threaded member, replaces the fastener head 24 as a clamping
portion of the stud fastener 80. The stud fastener 80 and nut 82
act together to secure the post 12 to the base plate 14 by the stud
fastener 80 being inserted through the clearance-hole aperture 70
in the base plate 14, and the nut 82 being threaded onto the stud
fastener 80 with the washer 22 between the nut 82 and the bottom
surface 26, or omitted. The stud fastener 80 and nut 82 are
optionally substituted for the fastener 20 in any of the different
embodiments of the invention disclosed herein without departing
from the spirit and scope of the invention.
[0047] FIG. 6 is a downward perspective exploded view that
illustrates another alternative embodiment of the assembly 10 of
the post 12 attached to the base plate 14. Accordingly, the
non-round aperture 36 formed in the body 34 of the base plate 14 is
formed as a closed-end cavity that extends only part way through
the body 34 between the top surface 38 upon which the post 12 is
mounted through to the intervening surface 68 part way through the
body 34.
[0048] The base end 44 of the post 12 is formed as the non-round
locking structure 48 that is substantially flat or planar on its
end surface 50. The non-round locking structure 48 fits into and
mates in the rotational locking arrangement with the non-round
aperture 36. The end surface 50 of the non-round locking structure
48 engages the intervening surface 68 that provides the floor of
the non-round aperture 36. The end surface 50 of the non-round
locking structure 48 is drawn flush and tight against the
intervening surface 68 by the fastener 20 through the
clearance-hole aperture 70, with the washer 22 between the fastener
head 24 and the counter surface 74, or omitted.
[0049] Alternatively, the raised non-round locking structure 48 is
sized the same length or less than the depth "d" of the closed-end
non-round aperture 36. Therefore, when engaged with the non-round
aperture 36 and having the end surface 46 flush against the top
surface 38 of the base plate 14, the raised non-round locking
structure 48 does not penetrate all the way into the non-round
aperture 36 and does not engage the intervening surface 68.
[0050] The counter surface 74 is optionally conical, as shown, and
the fastener head 24 is a mating conical shape, such as a Philips
flat head machine screw. The post 12 is not drawn through the
non-round aperture 36 in the base plate 14 because the floor
material 72 acts as a stop against which the base end 44 of the
post 12 is stopped.
[0051] Either the intervening surface 68 in the floor of the
non-round aperture 36, or the end surface 50 of the non-round
locking structure 48, is optionally formed with the multiple feet
78 to provide a planar mounting surface for the post 12 relative to
the base plate 14.
[0052] While the preferred embodiment of the invention has been
illustrated and described, it will be appreciated that various
changes can be made therein without departing from the spirit and
scope of the invention. For example, materials may be substituted
for the different components of the flexible support apparatus of
the invention without departing from the spirit and scope of the
invention. Therefore, the inventor makes the following claims.
* * * * *