US3933401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foamed poly(vinyl chloride) drawer sides
Assignee: Armstrong World Industries Inc
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Filing: 1974-06-21
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Granted: 1976-01-20
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Expires: 1994-06-21
Abstract
Abstract The rear and side panels of a drawer are formed from a single slab of foamed rigid poly(vinyl chloride) having a reinforcing densified core and a densified outer skin with a wood grain pattern thereon. A longitudinal groove is formed in one surface of the slab adjacent the bottom edge thereof, and two V-shaped grooves are cut across the width of the same surface at appropriate ultimate corner forming locations. Appropriate guide slots and drawer front fastening configurations are formed on the slab. The slab is heated and bent at the V-shaped groove locations to form the rear and side panels of the drawer. A drawer bottom panel is installed in the longitudinal groove adjacent the bottom edge of the rear and side panels and the drawer front is attached. The drawer looks, feels, sounds, and handles like wood, but is less expensive and has many desirable qualities not possessed by wood.
Inventors
- 👤 John G. Lampe
- 👤 Willie E. Wall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:46
CPC Classifications
B; B29; B29C; B29C53/00; B29C53/02; B29C53/04; B29C53/06; B29C53/063; B29C53/066; A; A47; A47B; A47B88/00; A47B88/90; A47B88/941; A47B88/9412; A47B88/9416; B29C48/00; B29C48/001; B29C48/0022; B29C48/03; B29C48/09; B29C48/11; A47B96/00; A47B96/20; A47B96/202; A47B2096/203; B29C48/07; B29C48/12; B29K; B29K2027/00; B29K2027/06; B29L; B29L2031/00; B29L2031/44; B29L2031/446; Y; Y10; Y10T; Y10T428/00; Y10T428/15; Y10T428/18
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
194 words
A drawer comprising two side walls, an integral rear wall, a bottom and a front, said side walls and rear wall characterized in that they are made of one continuous foamed thermoplastic slab having a dense reinforcing core and a densified skin on the planar surfaces, said dense reinforcing core is centrally located and consists of consolidated portions of the foamed thermoplastic slab material, said resulting slab structure thereby being a three-part structure having a first densified core, secondly, a layer of foam material surrounding said core forming an annulus around the core, and a third part consisting of a densified skin substantially surrounding the densified core and foam material layer, said densified skin surfaces having a simulated wood grain, drawer bottom receiving means on the inner surfaces of said side walls and rear wall, bendable rear corner forming means joining said side walls and rear wall and spaced apart a distance equal to the length of the rear wall, a drawer bottom panel positioned in said bottom panel receiving means, drawer front fastening means on the end of said side walls, and a drawer front fastened to said ends of said side walls.
Claim 2
Dependent Claim
194 words
A drawer comprising two side walls, an integral rear wall, a bottom and a front, said side walls and rear wall characterized in that they are made of one continuous foamed thermoplastic slab having a dense reinforcing core and a densified skin on the planar surfaces, said dense reinforcing core is centrally located and consists of consolidated portions of the foamed thermoplastic slab material, said resulting slab structure thereby being a three-part structure having a first densified core, secondly, a layer of foam material surrounding said core forming an annulus around the core, and a third part consisting of a densified skin substantially surrounding the densified core and foam material layer, said densified skin surfaces having a simulated wood grain, drawer bottom receiving means on the inner surfaces of said side walls and rear wall, bendable rear corner forming means joining said side walls and rear wall and spaced apart a distance equal to the length of the rear wall, a drawer bottom panel positioned in said bottom panel receiving means, drawer front fastening means on the end of said side walls, and a drawer front fastened to said ends of said side walls.
Claim 3
Dependent Claim
17 words
A drawer according to claim 1 wherein the foamed thermoplastic slab is made of rigid poly(vinyl chloride).
Claim 4
Dependent Claim
25 words
The drawer of claim 1 wherein the drawer bottom receiving means consists of a continuous groove disposed adjacent the lower edges of the wall surfaces.
Claim 5
Dependent Claim
36 words
The drawer of claim 1 wherein the bendable rear corner forming means comprises a pair of substantially V-shaped grooves extending across the width of the inner surface of said walls and partially through the thickness thereof.
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) | 1979-01-19 | 1979-07-21 | 1980-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-19 | 1983-07-21 | 1984-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-19 | 1987-07-21 | 1988-01-20 | $7700.00 | Window Closed / Lapsed |