Patent US3942836A successfully refreshed from Google Patents.
US3942836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chair
Assignee: Steelcase Inc
•
Filing: 1974-04-22
•
Granted: 1976-03-09
•
Expires: 1994-04-22
Abstract
Abstract The specification discloses a chair having a seat seated on spaced side rails above an auxiliary seat supporting surface which is spaced slightly below the seat and which shares the load imposed on the seat by a person sitting in it with the side rails and their supporting stretcher, yet allows the seat to give slightly so that the seat feels comfortably yielding.
Inventors
- 👤 Richard H. Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:53
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: 10
Claim 1
Independent Claim
278 words
A chair comprising: a base having a central, upwardly extending supporting column; a structural, load supporting stretcher operably mounted on said column, said stretcher including struts projecting outwardly towards each side of said chair; a pair of spaced side rails joined to said struts of said stretcher; a rigid supporting seat seated on said side rails and spanning the space therebetween, said seat having only sufficient flexibility to flex slightly when a person using the chair sits on it, thereby giving the chair a comfortably yielding feeling; means securing said supporting seat to both said side rails; a seat support surface on said stretcher positioned below said seat and generally above support column of said base, said seat support surface being operably connected to said seat support column and there being a slight space between said supporting seat and said seat support surface whereby said seat flexes downwardly slightly when a person sits on it and comes to rest on said seat support surface such that said seat support surface transmits a portion of the load imposed on said seat directly downwardly to said supporting column, thereby decreasing the load which has to be carried by said side rails and said struts of said stretcher; said seat support surface on said stretcher comprises the top surface of said stretcher; said stretcher includes an upwardly protruding dome, protruding upwardly towards the bottom of said supporting seat, the top of said dome defining said seat supporting surface; sound deadening material is placed on top of said seat support surface whereby when the bottom of said seat comes to rest on said seat support surface, said sound deadening material minimizes noise.
Claim 2
Dependent Claim
278 words
A chair comprising: a base having a central, upwardly extending supporting column; a structural, load supporting stretcher operably mounted on said column, said stretcher including struts projecting outwardly towards each side of said chair; a pair of spaced side rails joined to said struts of said stretcher; a rigid supporting seat seated on said side rails and spanning the space therebetween, said seat having only sufficient flexibility to flex slightly when a person using the chair sits on it, thereby giving the chair a comfortably yielding feeling; means securing said supporting seat to both said side rails; a seat support surface on said stretcher positioned below said seat and generally above support column of said base, said seat support surface being operably connected to said seat support column and there being a slight space between said supporting seat and said seat support surface whereby said seat flexes downwardly slightly when a person sits on it and comes to rest on said seat support surface such that said seat support surface transmits a portion of the load imposed on said seat directly downwardly to said supporting column, thereby decreasing the load which has to be carried by said side rails and said struts of said stretcher; said seat support surface on said stretcher comprises the top surface of said stretcher; said stretcher includes an upwardly protruding dome, protruding upwardly towards the bottom of said supporting seat, the top of said dome defining said seat supporting surface; sound deadening material is placed on top of said seat support surface whereby when the bottom of said seat comes to rest on said seat support surface, said sound deadening material minimizes noise.
Claim 3
Dependent Claim
16 words
The chair of claim 1 in which said sound deadening material comprises a foam cushion material.
Claim 4
Dependent Claim
32 words
The chair of claim 2 in which said foam cushion material includes an adhering, tape surface whereby said sound deadening material is secured to said seat support surface by being taped thereto.
Claim 5
Dependent Claim
50 words
The chair of claim 3 in which said means securing said supporting seat to both said side rails includes a downwardly extending wall at each side thereof which wraps over the outside of the adjacent one of said side rails to aid in supporting said seat between said side rails.
Claim 6
Dependent Claim
100 words
The chair of claim 4 in which each of said downwardly extending walls at the side edges of said supporting seat comprise the exterior wall of channel located generally at each side of said supporting seat, said channel including an interior wall as well as said exterior wall, and said channel being seated over its respective one of said side rails with its exterior and interior wall embracing said side rail; each of said channels terminating in a pocket located generally at each front corner of said supporting seat, said pocket fitting over the end of its respective side rail.
Claim 7
Dependent Claim
53 words
The chair of claim 5 in which said supporting seat is secured to said side rails only by said channels being seated over said side rails, said side rails terminating in said pockets, and a fastener extending through said channel into said side rail generally at the rear corner of said supporting seat.
Claim 8
Dependent Claim
42 words
The chair of claim 6 in which said supporting seat includes a downwardly extending wall at each side thereof which wraps over the outside of the adjacent one of said side rails to aid in supporting said seat between said side rails.
Claim 9
Dependent Claim
101 words
The chair of claim 7 in which each of said downwardly extending walls at the side edges of said supporting seat comprise the exterior wall of a channel located generally at each side of said supporting seat, said channel including an interior wall as well as said exterior wall, and said channel being seated over its respective one of said side rails with its exterior and interior wall embracing said side rail; each of said channels terminating in a pocket located generally at each front corner of said supporting seat, said pocket fitting over the end of its respective side rail.
Claim 10
Dependent Claim
50 words
The chair of claim 8 in which said supporting seat is secured to said side rails only by said channels being seated over said side rails terminating in said pockets, and a fastener extending through said channel into said side rail generally at the rear corner of said supporting seat.
References Cited (Backward Citations)
CA661993A
Cited
US946225A
Cited
US1641330A
Cited
US1836353A
Cited
FR1190445A
Cited
US3120407A
Cited
US3111344A
Cited
US3471200A
Cited
US3675970A
Cited
US3601176A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-09 | 1979-09-08 | 1980-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-09 | 1983-09-08 | 1984-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-09 | 1987-09-08 | 1988-03-09 | $7700.00 | Window Closed / Lapsed |