US3580535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Connecting fixture
Assignee: WHB ANBAUMOBEL VON POSCHINGER
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Filing: 1970-04-24
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Granted: 1971-05-25
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Expires: 1990-04-24
Abstract
Abstract A two-piece fixture for connecting two shelf parts or the like at right angles to each other consisting of a headed locking pin projecting from one side of one shelf part, and a cup-shaped slotted element to be mounted in one end of the other shelf part and adapted to be hooked laterally over the headed projecting part of the locking pin and to draw the two shelf parts tightly together. The largest part of the periphery of the cup-shaped element has a double wall, while the remaining part is formed by a single thicker wall which is flat at its outer side and provided with an axially extending slot which has an open end at the open side of the cup. The inner wall surface at least of this single-wall portion is inclined, tapering from the open end of the slot toward its closed end.
Inventors
- 👤 Christoph Naske
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:19
CPC Classifications
F; F16; F16B; F16B12/00; F16B12/10; F16B12/12; F16B12/20; F16B12/2009; F16B12/2027; F16B12/2036; F16B2012/106; F16B2012/2018
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
377 words
A two-piece fixture for connecting two boards of a shelf or the like at right angles to each other comprising a substantially cup-shaped connecting element adapted to be mounted in a blindend bore in a first of said boards adjacent to one end thereof and having a substantially round outer wall and a flat part on said wall adapted to abut against one side of the second board, said element further having an inner wall concentric to said outer wall and having a closed bottom at one end and an open other end, said two walls being integrally connected to each other adjacent to said other end of said element and being separated from each other by a chamber having a round substantially U-shaped cross section and an open end outwardly adjacent to said bottom and a closed end adjacent to said connected end of said walls, said chamber terminating in its peripheral direction into a single thicker wall portion having said flat part on its outer side, said wall portion having a central slot extending in the axial direction of said element and having an open end adjacent to the open end of said inner wall and a closed end adjacent to said bottom, at least the inner surface of said thicker wall portion directly adjacent to both walls of said slot being tapered from said open end to said closed end of said slot so that at least adjacent to said slot said wall portion gradually increases in thickness from said open end to said closed end of said slot, said fixture further comprising a locking pin having a shank adapted to be mounted in a transverse bore in said second board, and a thinner stud on one end of and coaxial to said shank and adapted to project from said side of said second board and having a head on its free end, said stud having a thickness substantially equal to the width of said slot and being adapted to be inserted into said slot, and said head having a thickness not larger than that of said shank but larger than the width of said slot and being adapted to engage upon said tapered inner surface when said stud in inserted into said slot.
Claim 2
Dependent Claim
377 words
A two-piece fixture for connecting two boards of a shelf or the like at right angles to each other comprising a substantially cup-shaped connecting element adapted to be mounted in a blindend bore in a first of said boards adjacent to one end thereof and having a substantially round outer wall and a flat part on said wall adapted to abut against one side of the second board, said element further having an inner wall concentric to said outer wall and having a closed bottom at one end and an open other end, said two walls being integrally connected to each other adjacent to said other end of said element and being separated from each other by a chamber having a round substantially U-shaped cross section and an open end outwardly adjacent to said bottom and a closed end adjacent to said connected end of said walls, said chamber terminating in its peripheral direction into a single thicker wall portion having said flat part on its outer side, said wall portion having a central slot extending in the axial direction of said element and having an open end adjacent to the open end of said inner wall and a closed end adjacent to said bottom, at least the inner surface of said thicker wall portion directly adjacent to both walls of said slot being tapered from said open end to said closed end of said slot so that at least adjacent to said slot said wall portion gradually increases in thickness from said open end to said closed end of said slot, said fixture further comprising a locking pin having a shank adapted to be mounted in a transverse bore in said second board, and a thinner stud on one end of and coaxial to said shank and adapted to project from said side of said second board and having a head on its free end, said stud having a thickness substantially equal to the width of said slot and being adapted to be inserted into said slot, and said head having a thickness not larger than that of said shank but larger than the width of said slot and being adapted to engage upon said tapered inner surface when said stud in inserted into said slot.
Claim 3
Dependent Claim
34 words
A two-piece fixture as defined in claim 1, in which the entire inner wall surface of said element is conical and tapering from said open side of said inner wall to said bottom thereof.
Claim 4
Dependent Claim
46 words
A two-piece fixture as defined in claim 1, in which said shank of said locking pin has a tapped bore in its other end and a screw screwed into said bore and having a head adapted to abut against the other side of said second board.
Claim 5
Dependent Claim
105 words
A two-piece fixture as defined in claim 1, in which said shank of said locking pin has a tapped bore in its other end, and a screw screwed into said bore and having an annular flange adapted to abut against the other side of said second board, a head on the outer end of said screw, and a shank part intermediate said head and said flange, said shank part and said screw head being adapted to serve the same functions as said stud and its head for connecting another board by means of another cup-shaped connecting element to said other side of said second board.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |