Patent US4540308A successfully refreshed from Google Patents.
US4540308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Joint for furniture support structure
Assignee: Individual
•
Filing: 1983-12-27
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Granted: 1985-09-10
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Expires: 2003-12-27
Abstract
Abstract The disclosure herein describes a joint consisting of three serially-interconnectable members each including a cut-away section; the volumes defined by the cut-away sections of the first and second are equal and L-shaped. These two members, once assembled, define a cut-away section, the volume of which is rectangular. The volume of the cut-away section of the third member which serves to interlock the three pieces together equals the sum of the said L-shaped volume and the rectangular volume. One application of the joint of the present invention is in furniture support structures such as tables, shelves or the like.
Inventors
- 👤 Edward Colby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:34
CPC Classifications
F; F16; F16B; F16B12/00; A; A47; A47B; A47B13/00; A47B13/02; A47B2013/026; A47B2013/027; F16B12/04; F16B2012/043; Y; Y10; Y10T; Y10T403/00; Y10T403/44; Y10T403/447; Y10T403/70; Y10T403/7001
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
92 words
A joint for use in furniture support structure comprising: three serially-interconnectable members including a first member and a second member initially-interfittable and an interlocking third member connectable to said first and second members interfitted; each member including a cut-away section; each cut-away section of said first and second members defining a cavity defining an L-shaped volume; said first and second members, in interfit relation, defining a cavity having a rectangular volume; the cut-away section of said third member defining a cavity having a volume including said L-shaped volume and said rectangular volume.
Claim 2
Dependent Claim
92 words
A joint for use in furniture support structure comprising: three serially-interconnectable members including a first member and a second member initially-interfittable and an interlocking third member connectable to said first and second members interfitted; each member including a cut-away section; each cut-away section of said first and second members defining a cavity defining an L-shaped volume; said first and second members, in interfit relation, defining a cavity having a rectangular volume; the cut-away section of said third member defining a cavity having a volume including said L-shaped volume and said rectangular volume.
Claim 3
Dependent Claim
27 words
A joint as defined in claim 1, wherein the cut-away section of said first member is a mirror image of the cut-away section of said second member.
Claim 4
Dependent Claim
18 words
A joint as defined in claim 1, wherein said L-shaped volume is a multiple of a basic cube.
Claim 5
Dependent Claim
12 words
A joint as defined in claim 3, wherein said multiple is three.
Claim 6
Dependent Claim
28 words
A joint as defined in claim 4, wherein said cut-away section of said third interlocking member has a volume in which said basic cube is contained five times.
Claim 7
Dependent Claim
24 words
A joint as defined in claim 1, wherein each said members have a square cross-section at least in the area of said cut-away sections.
Claim 8
Dependent Claim
23 words
A joint as defined in claim 6, wherein the depth of each cut-away section is half the side length of said square cross-section.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-09-09 | 1989-03-11 | 1989-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-09 | 1993-03-11 | 1993-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-09 | 1997-03-11 | 1997-09-10 | $7700.00 | Window Closed / Lapsed |