Patent US3907363A successfully refreshed from Google Patents.
US3907363A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Upholstery system
Assignee: Steelcase Inc
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Filing: 1974-04-22
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Granted: 1975-09-23
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Expires: 1994-04-22
Abstract
Abstract A chair in which an upholstered inner seat and back matingly fit over a supporting seat and back with integrally formed projections on the supporting seat and back snapping into integrally formed receiving apertures in the inner seat and back. The supporting seat and back include overlapping channel portions to facilitate joining them in an aligned, continuous appearing manner.
Inventors
- 👤 Richard H Baker
- 👤 Robert C Clawson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:06
CPC Classifications
A; A47; A47C; A47C5/00; A47C5/04; A47C5/06; A47C3/00; A47C3/02; A47C3/025; A47C3/026; A47C7/00; A47C7/02; A47C7/24; Y; Y10; Y10S; Y10S297/00; Y10S297/02
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
230 words
A chair comprising: a formed, plastic supporting seat and back means; a formed plastic inner seat and back means having a configuration conforming generally to that of said supporting seat and back means; support means for supporting said supporting seat and back means; said supporting seat and back means including at least a front edge along the front of the seat portion thereof and a top edge along the top of the back portion thereof; said inner seat and back means including at least a front lip along the front of the seat portion thereof extending over and matingly embracing said front edge of said supporting seat and back means and a top lip along the top of the back portion thereof exteNding over and matingly embracing said top edge of said supporting seat and back means; one of said front lip and said front edge including at least one projection integrally molded thereto and projecting therefrom, the other of said front lip and said front edge including an integrally molded receiving aperture adapted to matingly receive said projection; and one of said top lip and said top edge including at least one projection integrally molded therewith and projecting therefrom and the other including an integrally molded receiving aperture adapted to receive said projecting whereby said inner seat and back means are secured to said supporting seat and back means.
Claim 2
Dependent Claim
230 words
A chair comprising: a formed, plastic supporting seat and back means; a formed plastic inner seat and back means having a configuration conforming generally to that of said supporting seat and back means; support means for supporting said supporting seat and back means; said supporting seat and back means including at least a front edge along the front of the seat portion thereof and a top edge along the top of the back portion thereof; said inner seat and back means including at least a front lip along the front of the seat portion thereof extending over and matingly embracing said front edge of said supporting seat and back means and a top lip along the top of the back portion thereof exteNding over and matingly embracing said top edge of said supporting seat and back means; one of said front lip and said front edge including at least one projection integrally molded thereto and projecting therefrom, the other of said front lip and said front edge including an integrally molded receiving aperture adapted to matingly receive said projection; and one of said top lip and said top edge including at least one projection integrally molded therewith and projecting therefrom and the other including an integrally molded receiving aperture adapted to receive said projecting whereby said inner seat and back means are secured to said supporting seat and back means.
Claim 3
Dependent Claim
83 words
The chair of claim 1 in which upholstery means cover said inner seat and back means; said inner seat and back means having sufficient thickness and rigidity to hold their shape during the upholstery covering process and to hold their shape when secured to said supporting seat and back means, and said inner seat and back means having sufficient resilient flexibility that said front and top lips can be snapped over said front and top edges of said supporting seat and back means.
Claim 4
Dependent Claim
183 words
The chair of claim 2 in which said supporting seat and back means comprises a separate supporting seat and a separate supporting back; said inner seat and back means comprising a separate inner seat and a separate inner back; said supporting seat including a rear edge and said inner seat including a rear lip, said rear lip fitting over and matingly embracing said rear edge; one of said rear lip and said rear edge on said inner seat and supporting seat respectively including at least one projection integrally molded therewith and projecting therefrom, the other of said rear lip and rear edge including a receiving aperture adapted to matingly receive said projection; said supporting back including a bottom edge and said inner back including a bottom lip, said bottom lip fitting over and matingly embracing said bottom edge; one of said bottom lip and said bottom edge on said inner back and said supporting back respectively including a projection integrally molded therewith and projecting therefrom, the other of said bottom lip and bottom edge including an aperture adapted to matingly receive said projection.
Claim 5
Dependent Claim
42 words
The chair of claim 3 in which each of said projections is located on and integrally molded with said supporting seat and back means and each of said apertures is located in and integrally molded with said inner seat and back means.
Claim 6
Dependent Claim
105 words
The chair of claim 4 in which said projections on said front edge of said supporting seat and on said top and bottom edges of said supporting back comprise buttons having posts with enlarged heads on the ends of said posts, said enlarged heads hooking into their respective receiving apertures on the front lip of said inner seat and on the bottom and top lips of said inner back; said projection on said rear edge of said supporting seat comprising at least one tab projecting therefrom, said receiving aperture on said rear lip of said seat comprising a slot in which said tab is received.
Claim 7
Dependent Claim
48 words
The chair of claim 4 in which each of said projections is located on the mold parting line of its respective supporting seat and supporting back whereby said projections can be integrally molded to said supporting seat and back without the need for special cams in the mold.
Claim 8
Dependent Claim
31 words
The chair of claim 1 in which said projections comprise buttons having a post with an enlarged head on the end thereof, said enlarged head hooking into its respective receiving aperture.
Claim 9
Dependent Claim
30 words
The chair of claim 1 in which said projections are located on said supporting seat and back means and said apertures are located on said inner seat and back means.
Claim 10
Dependent Claim
60 words
The chair of claim 1 in which each of said projections is located on the parting line of its respective seat and back means and inner seat and back means whereby said projections can be integrally molded with their respective supporting seat and back meaNs and inner seat and back means without the need for employing cams in the mold.
Claim 11
Dependent Claim
182 words
The chair of claim 3 in which said support means comprises a base, a stretcher operably mounted on said base and a pair of spaced side rails joined to said stretcher; said supporting seat and said supporting back each including a channel at each side thereof with each side channel being seated over one of said side rails; said bottom edge of said supporting back being spaced from said rear edge of said supporting seat; each of said side channels of said supporting back including projection portions extending downwardly said supporting seat and each of said side channel lips and supporting seat including projection portions extending upwardly toward said supporting back; one of said supporting seat channel projection portions and supporting back channel projection portions overlapping the other of said channel projection portions at each side of said chair; securing means securing at least the overlapping one of said channel projection portions to said side rail at each side of said chair whereby said supporting seat and supporting back members are secured to said side rails generally at said overlapping channel portions.
Claim 12
Dependent Claim
229 words
A chair comprising: a base, a stretcher operably mounted on said base; a pair of spaced side rails joined to said stretcher, each said side rail having a seat supporting portion and a back supporting portion; a formed plastic supporting seat and a formed plastic supporting back; a formed plastic inner seat having a shape conforming generally to the face of said supporting seat and a formed plastic inner back having a shape conforming generally to the face of said supporting back; seat upholstery covering means covering the face of said inner seat and being wrapped around the edges thereof to the rear surface thereof; back upholstery covering means covering the face of said inner back and being wrapped around the edges thereof to the rear surface thereof; one of said supporting seat and said supporting back including a flange at least at each side thereof adjacent one of said side rails, said flange being seated on its respective side rail; the other of said supporting seat and said supporting back including a flap at least at each side thereof overlapping said flange; securing means securing at least said other of said supporting seat and said supporting back to said side rail in the vicinity of said flap whereby said supporting seat and said supporting back are secured to said side rails at said overlapping flap and flange portions.
Claim 13
Dependent Claim
229 words
A chair comprising: a base, a stretcher operably mounted on said base; a pair of spaced side rails joined to said stretcher, each said side rail having a seat supporting portion and a back supporting portion; a formed plastic supporting seat and a formed plastic supporting back; a formed plastic inner seat having a shape conforming generally to the face of said supporting seat and a formed plastic inner back having a shape conforming generally to the face of said supporting back; seat upholstery covering means covering the face of said inner seat and being wrapped around the edges thereof to the rear surface thereof; back upholstery covering means covering the face of said inner back and being wrapped around the edges thereof to the rear surface thereof; one of said supporting seat and said supporting back including a flange at least at each side thereof adjacent one of said side rails, said flange being seated on its respective side rail; the other of said supporting seat and said supporting back including a flap at least at each side thereof overlapping said flange; securing means securing at least said other of said supporting seat and said supporting back to said side rail in the vicinity of said flap whereby said supporting seat and said supporting back are secured to said side rails at said overlapping flap and flange portions.
Claim 14
Dependent Claim
119 words
The chair of claim 11 in which there is a space between said supporting seat and said supporting back; said supporting seat including a projection channel projecting rearwardly and upwardly therefrom generally at each rear corner thereof and being seated over its respective side rails, said back including a projection channel projecting downwardly therefrom at each lower corner thereof and being seated over its respective side rail; said flange comprising one of each said seat projection channels and said back projection channels including a flange; said flap comprising each of the other of said seat projection channels and said back projection channels including a flap, each said flap fitting over each said flange to provide a flush overlap thereof.
Claim 15
Dependent Claim
35 words
The chair of claim 12 in which said securing means comprises a fastener threaded through at least one of each of said seat projection channels and back projection channels and into its respective side rail.
References Cited (Backward Citations)
US2824602A
Cited
US3152836A
Cited
US3220469A
Cited
US3182377A
Cited
US3610686A
Cited
US3724897A
Cited
US3788701A
Cited
US3823980A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |