U.S. patent application number 11/736140 was filed with the patent office on 2008-10-23 for corner joint for silk screen frames.
Invention is credited to John Niswonger.
Application Number | 20080256895 11/736140 |
Document ID | / |
Family ID | 39870820 |
Filed Date | 2008-10-23 |
United States Patent
Application |
20080256895 |
Kind Code |
A1 |
Niswonger; John |
October 23, 2008 |
CORNER JOINT FOR SILK SCREEN FRAMES
Abstract
A corner joint for constructing silkscreen frames, comprising a
first insert member, a second insert member connected
perpendicularly to the first insert member, and a means for
achieving an air-tight fit between the insert members and frame
side members. The free ends of the first and second insert members
have at least one tapered surface. The insert members are adapted
to be received inside an end of a frame side member and tightly
engage the frame side member.
Inventors: |
Niswonger; John; (Calabasas,
CA) |
Correspondence
Address: |
EDWIN TARVER
16830 Ventura Blvd., SUITE 360
Encino
CA
91436
US
|
Family ID: |
39870820 |
Appl. No.: |
11/736140 |
Filed: |
April 17, 2007 |
Current U.S.
Class: |
52/745.19 |
Current CPC
Class: |
E04B 1/585 20130101;
E04B 1/5831 20130101 |
Class at
Publication: |
52/745.19 |
International
Class: |
E04B 1/00 20060101
E04B001/00 |
Claims
1. A corner joint for silkscreen frames, comprising: (a) a first
insert member adapted to be received inside an end of a frame side
member, tightly engaging the frame side member; (b) a second insert
member connected to the first insert member and adapted to be
received inside an end of a frame side member, tightly engaging the
frame side member, wherein; (c) the free ends of the first and
second insert members have at least one tapered surface; and (d)
means for achieving an air-tight fit between the insert members and
frame members interior side, and the insert members and frame
members exterior side.
2. The corner joint of claim 1, wherein the means for achieving an
air-tight fit comprises a hermetic seal between the exterior of the
insert members and the interior of the frame members.
3. The corner joint of claim 1, wherein the seal is achieved by
applying a glue or other adhesive material, so that joining an
insert member and a frame member causes the glue or other adhesive
to form a hermetic seal when the insert member is inserted inside
the end of the frame member.
4. The corner joint of claim 1, wherein the taper angle of the at
least one tapered surface is more than 2 degrees.
5. The corner joint of claim 1, wherein tapered sections of the
insert members comprise a pair of the tapered surfaces, a first
tapered surface and a second tapered surface extending from the
first tapered surface forming the free end of the insert member and
having a taper angle of approximately 8 to 10 degrees.
6. The corner joint of claim 5, wherein the tapered sections of the
insert members comprise a single taper comprising an increasing
arc.
7. The corner joint of claim 1, wherein the at least one tapered
surface is a straight surface.
8. The corner joint of claim 1, wherein the at least one tapered
surface is a curved surface.
9. The corner joint of claim 1, wherein the insert members comprise
a plurality of the tapered surfaces with multiple taper angles.
10. The corner joint of claim 1, wherein the insert members
comprise square or rectangular tubular structures in cross
section.
11. The corner joint of claim 1, wherein the insert members
comprise round tubular structures in cross section.
12. The corner joint of claim 1, wherein the corner joint further
comprises a plate member at the plane of connection between the
first and second insert members.
13. The corner joint of claim 12, wherein the outer surface area of
the plate member is greater than the outer surface area of the
insert members, thereby forming a ridge on the corner joint.
14. The corner joint of claim 13, wherein the outer surface area of
the plate member is equal to the cross sectional outer surface area
of the frame side members.
15. The corner joint of claim 12, wherein the frame side members
engage the plate member, so that a uniform surface is created from
the face of one frame member across the outer edge of the plate
member to the face of the adjacent frame member.
16. The corner joint of claim 12, wherein the plate member
cross-sectionally bisects the frame member, and includes an air
passageway that allows interior air pressure inside the silk screen
frame to equalize.
17. The corner joint of claim 1, wherein the corner joint is
comprised of aluminum.
18. A means of constructing a silk screen frame with side members
and connecting corner members, comprising the steps of: (a)
achieving a hermetic seal between at least one corner member of the
silk screen frame and at least one frame side member; and (b)
achieving a uniform exterior surface from one frame side member to
another frame side member by; i. including a pane member equal in
circumferential size to the bisectional circumferential size of a
frame member, so that when adjoining frame members are connected to
a corner member, the outer surface of the pane member and outer
surfaces of the frame members are in planar alignment.
19. The means of claim 18, wherein the hermetic seal is achieved
through the use of an adhesive.
20. The means of claim 19, wherein the adhesive occupies the space
between at least one frame member interior and at least one corner
member exterior, including the space between the pane member and
the edge of the at least one frame member
21. A corner joint for silkscreen frames, comprising: (a) a first
insert member adapted to be received inside an end of a frame side
member, tightly engaging the frame side member; (b) a second insert
member connected to the first insert member and adapted to be
received inside an end of a frame side member, tightly engaging the
frame side member, wherein; (c) the free ends of the first and
second insert members have at least one tapered surface; (d) means
for achieving an air-tight fit between the insert members and frame
members interior side, and the insert members and frame members
exterior side; and (e) a plate member at the plane of connection
between the first and second insert members, the outer surface area
of the plate member is greater than the outer surface area of the
insert members, thereby forming a ridge on the corner joint.
22. The corner joint of claim 21, wherein the plate member includes
an air passageway that allows interior air pressure inside the silk
screen frame to equalize.
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] None
FEDERALLY SPONSORED RESEARCH
[0002] Not Applicable
SEQUENCE LISTING OR PROGRAM
[0003] Not Applicable
STATEMENT REGARDING COPYRIGHTED MATERIAL
[0004] Portions of the disclosure of this patent document contain
material that is subject to copyright protection. The copyright
owner has no objection to the facsimile reproduction by anyone of
the patent document or the patent disclosure as it appears in the
Patent and Trademark Office file or records, but otherwise reserves
all copyright rights whatsoever.
BACKGROUND
[0005] The present invention relates in general to corner joints,
and more particularly to a corner joint for constructing a silk
screen frame.
[0006] Several types of corner joint devices have been developed in
art. U.S. Pat. No. 6,089,778 to Hirano discloses a joint for
connecting two resin-coated steel pipes in an intersecting fashion.
The joint comprises two cylindrical tubes of equal length that are
connected into L-shaped configuration via a curved connecting
portion. The resin-coated steel pipes are inserted into the
cylindrical tubes. The joint also includes slits for permitting a
pair of fitting ribs of the resin-coated steel pipes to project
there through and cover ribs extending along both sides of the
entire length of the slits for covering outer side surfaces of the
pair of fitting ribs of the resin-coated steel pipe.
[0007] U.S. Pat. No. 5,820,289 to Kern discloses a corner joint
device for longitudinal bars and cross bars that are created from
hollow profiles. The device has three legs connected at right
angles to each other by a connecting block. The connecting block is
a short elbow onto which two of the three legs are formed. The
third leg is connected in a removable manner to the crest of the
connecting block. The hollow profiles of the bars can be slipped
onto the legs. The three legs fit with little play exactly into the
hollow profiles of the bars. The legs and the hollow profiles can
have a rectangular, square or circular cross section.
[0008] U.S. Pat. No. 5,485,705 to Guillemet discloses a corner
assembly for holding a screen frame. The corner assembly has a pair
of connector arms extending outwardly from a corner connector
portion. The arms are telescopically received in the corner
connector, generally at 90 degrees relative to each other. Each
corner assembly includes a slide member carried in a slide way. The
cross-sectional configuration for side members of the frame may be
of the roll formed or extruded U-shaped construction. Each arm of
the corner assembly has a U-shaped configuration, opening into a
channel, adapted to be resiliently received in gripping telescopic
relation within the side members.
[0009] The components in the above devices and their methods of use
are different from the present invention. Currently, the process of
silk screening uses square or rectangular permanently welded metal
frames, comprising four hollow side members connected at right
angles. But these frames are made on an individual basis, which
requires skilled labor. Moreover, any liquid from the silk
screening process can find its way into the hollow side members,
especially through the corners of the frame.
[0010] Therefore, it is an object of the present invention to
provide an off-the-shelf corner joint that is easy to use for
connecting hollow silk screen frame side members without the need
of skilled labor.
[0011] A further object is to provide a corner joint for connecting
hollow side members to form an air-tight seal for preventing
passage of liquid from the silk screening process into the hollow
side members.
[0012] Finally, it is an object of the present invention to provide
a corner joint for constructing a rigid silk screen frame to anchor
material on, as is a requirement in the silk screening process.
These and other objects of the present invention will become better
understood with reference to the appended Summary, Description, and
Claims.
SUMMARY
[0013] The present invention is a corner joint for connecting frame
side members of a silk screen frame. The corner joint comprises a
first insert member and a second insert member connected
perpendicularly to the first insert member. The free ends of the
insert members include tapered surfaces. The joint also includes a
plate member at the plane of connection between the insert members
to increase the strength. The plate member forms a ridge on the
joint and includes a hole.
[0014] The insert members are adapted to be tightly received inside
the frame side members. A hermetic seal is achieved between the
frame side members and the joint by applying glue over the insert
members before they are inserted inside the frame side members. The
corner joint of the present invention thus helps in constructing a
rigid silkscreen frame.
BRIEF DESCRIPTION OF THE FIGURES
[0015] FIG. 1 is a perspective view of the corner joint of the
present invention.
[0016] FIG. 2 is a top view of the corner joint.
[0017] FIG. 3 is a perspective view of the corner joint and a pair
of frame side members.
[0018] FIG. 4 a perspective view showing the frame side members
engaged with the corner joint.
[0019] FIG. 5 a perspective view of an alternate embodiment of the
corner joint.
[0020] FIG. 6 is a top view of an alternate embodiment of the
corner joint.
[0021] FIG. 7 is a top view of an alternate embodiment of the
corner joint with three tapered surfaces.
[0022] FIG. 8 is a top view of an alternate embodiment of the
corner joint with a curved tapered surface.
FIGURES--REFERENCE NUMERALS
10 . . . Corner Joint
12 . . . First Insert Member
14 . . . Second Insert Member
16 . . . Rectangular Plate Member
18 . . . First Tapered Surface
20 . . . Second Tapered Surface
22 . . . Frame Side Member
24 . . . Alternate Embodiment of the Corner Joint
26 . . . Round Insert Member
28 . . . Tapered Surface of the Round Insert Member
30 . . . Circular Plate Member
32 . . . Hole
34 . . . Third Tapered Surface
36 . . . Curved Tapered Surface
DETAILED DESCRIPTION
[0023] Referring to the drawings, a preferred embodiment of the
corner joint is illustrated and generally indicated as 10 in FIGS.
1 through 6. The corner joint 10 is used to construct rigid silk
screen frames, especially smaller silk screen frames, without the
need of skilled labor.
[0024] Referring to FIGS. 1 and 2, the corner joint 10 comprises a
first insert member 12, a second insert member 14, and a
rectangular plate member 16 at the plane of connection between the
first and second insert members 12 and 14. The first and second
insert members are square tubular structures and include a pair of
tapered surfaces, namely, a first tapered surface 18 and a second
tapered surface 20 extending from the first tapered surface forming
the free end of the insert member. Preferably, the second tapered
surface 20 has a taper angle of approximately 8 to 10 degrees. The
surface area of the plate member 16 is more than the outer surface
area of the insert members 12 and 14 to form a ridge on the joint
10. The plate member 16 includes a hole for allowing air to pass
through the interior of the joint 10. The plate member 16 increases
the strength of the joint 10.
[0025] In an alternate embodiment, the insert members 12 and 14 can
comprise any number of tapered surfaces with varying taper angles
that are more than 2 degrees. Instead of straight tapered surfaces
as shown in FIGS. 1 and 2, the insert members can comprise curved
tapered surfaces.
[0026] Referring to FIGS. 3 and 4, the first and second insert
members 12 and 14 are adapted to be inserted inside an end of a
square tubular frame side member 22 and tightly engage the frame
member. Four corner joints 10 are used to construct a rigid silk
screen frame. An air-tight fit is achieved between the insert
members and the side members 22 by using glue or adhesive material.
Adhesive is applied to the insert members 12 and 14 or to the inner
surface of the side members 22 before inserting the insert members.
As an insert member is inserted inside the end of a side member 22,
the tapered surfaces 18 and 20 scoop up the glue to ensure an
air-tight fit. Glue, when dried, occupies the space between the
tapered surfaces 18 and 20 and the inner surface of the side
members 22.
[0027] After the silk screen frame is constructed, the hole in the
plate member 16 allows air to pass through the interior of the silk
screen frame to equalize pressure. The surface area of the plate
member 16 is equal to the outer surface area of the frame side
members 22, so that the outer end of ridge is substantially in
plane with the frame members 22.
[0028] Referring to FIGS. 5 and 6, in an alternate embodiment, the
corner joint 24 comprises round tubular insert members 26 with two
tapered surfaces 28 and a circular plate member 30. The diameter of
the plate member 30 is more than the diameter of the insert members
26 to form a ridge. The circular plate member 30 also includes a
hole 32 for allowing air to pass through the interior of the corner
joint 24. This embodiment is used to construct a silk screen frame
with round tubular frame side members. In a preferred embodiment,
the corner joints 10 and 24 are made of aluminum.
[0029] In another alternate embodiment, the corner joint comprises
multiple tapered surfaces with increasing taper angles, as shown in
FIG. 7 with first 18, second 20, and third 34 tapered surfaces. In
another alternate embodiment shown in FIG. 8, the insert member
includes a curved tapered portion 36 in the form of a smooth
increasing arc.
[0030] All features disclosed in this specification, including any
accompanying claims, abstract, and drawings, may be replaced by
alternative features serving the same, equivalent or similar
purpose, unless expressly stated otherwise. Thus, unless expressly
stated otherwise, each feature disclosed is one example only of a
generic series of equivalent or similar features.
[0031] Any element in a claim that does not explicitly state "means
for" performing a specified function, or "step for" performing a
specific function, is not to be interpreted as a "means" or "step"
clause as specified in 35 U.S.C. .sctn. 112, paragraph 6. In
particular, the use of "step of" in the claims herein is not
intended to invoke the provisions of 35 U.S.C. .sctn. 112,
paragraph 6.
[0032] Although preferred embodiments of the present invention have
been shown and described, various modifications and substitutions
may be made thereto without departing from the spirit and scope of
the invention. Accordingly, it is to be understood that the present
invention has been described by way of illustration and not
limitation.
* * * * *