Patent US4141590A successfully refreshed from Google Patents.
US4141590A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible furniture structure
Assignee: Individual
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Filing: 1977-12-23
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Granted: 1979-02-27
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Expires: 1997-12-23
Abstract
Abstract A collapsible furniture structure comprises a pair of free standing vertical support elements and a pair of rigid, U-shaped frame elements. Orifices are formed in the upper portions of the vertical support elements in which the extremities of the U-shaped frame elements are inserted and supported. The orifices are oriented and located so that, in the case of a chair, one of the frame elements extends forwardly from the support elements to define a seat portion of the chair while the other of the frame elements extends upwardly from the support elements to define a back rest portion of the chair. A cushion may be placed over the mounted frame elements for added comfort. Additional orifices may be formed in the lower portion of the vertical support elements into which additional floor engaging frame elements are inserted to provide a wider base to the structure. All frame elements are readily removable from the orifices to disassemble the structure for moving or storage.
Inventors
- 👤 Percival Lafer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:28
CPC Classifications
A; A47; A47C; A47C4/00; A47C4/02; A47B; A47B13/00; A47B13/02; A47B13/06; A47C13/00; A47C4/028
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
144 words
A collapsible structure adapted for use as an item of furniture comprising: A. a pair of relatively thick, upstanding support blocks, each of which includes i. an upper end portion ii. a lower end portion adapted to rest upon a suporting surface, and iii. connecting means formed at at least two separate locations in the upper end portion of each said support block, said connecting means being angularly displaced from one another; B. at least two frame elements, each of which i. is substantially U-shaped including two spaced apart extremities, and ii. is formed of a rigid material that resists bending and deformation under load; C. the spaced apart extremities of said frame elements being removably securable by said connecting means to said support blocks so that said frame elements are supported from said support blocks in extending positions angularly displaced from one another.
Claim 2
Dependent Claim
144 words
A collapsible structure adapted for use as an item of furniture comprising: A. a pair of relatively thick, upstanding support blocks, each of which includes i. an upper end portion ii. a lower end portion adapted to rest upon a suporting surface, and iii. connecting means formed at at least two separate locations in the upper end portion of each said support block, said connecting means being angularly displaced from one another; B. at least two frame elements, each of which i. is substantially U-shaped including two spaced apart extremities, and ii. is formed of a rigid material that resists bending and deformation under load; C. the spaced apart extremities of said frame elements being removably securable by said connecting means to said support blocks so that said frame elements are supported from said support blocks in extending positions angularly displaced from one another.
Claim 3
Dependent Claim
45 words
The structure of claim 1 in which said connecting means comprise means defining first and second orifices formed in angularly displaced locations in the upper end portion of each said support block for removably receiving and retaining the spaced apart extremities of said frame elements.
Claim 4
Dependent Claim
122 words
The structure of claim 2 adapted for use as a chair and in which one of said two orifices in the upper end portion of each said support block is formed in a generally forward looking position and the other of said two orifices is formed in a generally upwardly looking position angularly displaced from said forwardly looking orifice by about 90 degrees or more, the extremities of one of said frame elements are supported within said forwardly looking orifices in said support elements to define a seat portion of the chair, and the extremities of the other of said frame elements are supported within said upwardly looking orifices in said support elements to define a back rest portion of the chair.
Claim 5
Dependent Claim
36 words
The structure of claim 3 further including D. a cushion adapted to span and cover said two frame elements in their supported positions to add comfort to the seat and back rest portions of the chair.
Claim 6
Dependent Claim
30 words
The structure of claim 4 in which said cushion is foldable at an intermediate position so as to match the contour of said two frame elements in their supported positions.
Claim 7
Dependent Claim
20 words
The structure of claim 4 in which said cushion includes means for removably securing said cushion to said frame elements.
Claim 8
Dependent Claim
87 words
The structure of claim 1 in which each of said support blocks further includes iv. at least one additional connecting means formed in the lower end portion thereof, and in which said structure further includes D. at least two additional frame elements each including an extremity that is removably securable by said additional connecting means to the lower end portion of said support elements, said additional frame elements laterally extending from the lower end portion of said support blocks to provide added base stability to said structure.
Claim 9
Dependent Claim
37 words
The structure of claim 7 in which said additional connecting means comprise means defining additional orifices in the lower end portion of each said support block for removably receiving and retaining extremities of said additional frame elements.
Claim 10
Dependent Claim
14 words
The structure of claim 7 in which said additional frame elements comprise straight rods.
Claim 11
Dependent Claim
16 words
The structure of claim 1 in which said frame elements are formed from rigid metal tubing.
References Cited (Backward Citations)
CA782495A
Cited
FR58756E
Cited
US2673596A
Cited
CA966410A
Cited
GB1288461A
Cited
US3885766A
Cited
DE2524907A1
Cited
US4049314A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-02-26 | 1982-08-28 | 1983-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-26 | 1986-08-28 | 1987-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-26 | 1990-08-28 | 1991-02-27 | $7700.00 | Window Closed / Lapsed |