US3729244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible desk
Assignee: Canadian Patents and Development Ltd
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Filing: 1972-04-24
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Granted: 1973-04-24
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Expires: 1992-04-24
Abstract
Abstract A collapsible desk made of foldable sheet material comprising a pair of folding pedestals and a separably interconnecting top assembly which includes a top panel and three adjoining folding panels on each of two opposite sides of the top panel which fold to form a pair of parallel frame members. The pedestals are interconnected with cooperating tabs and slots to the top assembly between the frame members.
Inventors
- 👤 W Butler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:19
CPC Classifications
A; A47; A47B; A47B3/00; A47B3/12; A47B2220/00; A47B2220/008; A47B2220/0083; A47B2220/0086
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
271 words
A collapsible desk made of foldable sheet material comprising a pair of folding rectangular pedestals and a separably interconnecting folding top assembly, each of the pedestals made up of a sheet folded to form four walls and having means for foldably joining the ends of said sheet, each of the pedestals having an upwardly projecting tab on the upper portion of each of two opposite walls, said top assembly comprising a top panel and three integrally adjoining frame forming panels on each of two opposite edges of said top panel, each group of three panels comprising a first panel adjoining said top panel, a second panel adjoining said first panel and a third adjoining outer panel, each group of three panels being adapted for folding along score lines parallel with said opposite edges into a right-triangular tubular frame member, each folded frame member having the second panel disposed perpendicular to said top panel and spaced inwardly from said edge of said top panel, said third panel being contiguous with the lower surface of the top panel with the outer edge thereof extending to the score line between the top panel and said first panel, the two second panels of the folded frame members being spaced from one another a distance substantially equal to the spacing of said tabs of each of said pedestals, a pair of slots in each frame member disposed along the score line between the first and second panels, said slots being adapted to receive the tabs of said pedestals for interconnecting the top portion of each of said pedestals with said top assembly between said frame members.
Claim 2
Dependent Claim
271 words
A collapsible desk made of foldable sheet material comprising a pair of folding rectangular pedestals and a separably interconnecting folding top assembly, each of the pedestals made up of a sheet folded to form four walls and having means for foldably joining the ends of said sheet, each of the pedestals having an upwardly projecting tab on the upper portion of each of two opposite walls, said top assembly comprising a top panel and three integrally adjoining frame forming panels on each of two opposite edges of said top panel, each group of three panels comprising a first panel adjoining said top panel, a second panel adjoining said first panel and a third adjoining outer panel, each group of three panels being adapted for folding along score lines parallel with said opposite edges into a right-triangular tubular frame member, each folded frame member having the second panel disposed perpendicular to said top panel and spaced inwardly from said edge of said top panel, said third panel being contiguous with the lower surface of the top panel with the outer edge thereof extending to the score line between the top panel and said first panel, the two second panels of the folded frame members being spaced from one another a distance substantially equal to the spacing of said tabs of each of said pedestals, a pair of slots in each frame member disposed along the score line between the first and second panels, said slots being adapted to receive the tabs of said pedestals for interconnecting the top portion of each of said pedestals with said top assembly between said frame members.
Claim 3
Dependent Claim
45 words
The desk of claim 1 further comprising a locking flap extending from the top of said two opposite walls of each pedestal, each flap adapted to be positioned between the lower surface of said top panel and the third panel of the folded frame member.
Claim 4
Dependent Claim
41 words
The desk of claim 1 wherein the means for joining the ends of the pedestal sheet comprises a folding flap integrally connected with one end of said sheet, said flap adapted to be joined with the other end of said sheet.
Claim 5
Dependent Claim
23 words
The desk of claim 2 wherein the top edge of each of said tabs is disposed below the top edge of said pedestal.
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) | 1976-04-23 | 1976-10-23 | 1977-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-23 | 1980-10-23 | 1981-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-23 | 1984-10-23 | 1985-04-24 | $7700.00 | Window Closed / Lapsed |