Patent US4673215A successfully refreshed from Google Patents.
US4673215A
Expired / Lapsed
US
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Seat frame for automobile seats
Assignee: Tachi S Co Ltd
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Filing: 1986-04-09
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Granted: 1987-06-16
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Expires: 2006-04-09
Abstract
Abstract A seat frame for use in an automotive seat. The seat frame is divided into four sections, that is, front, rear, right and left sections, and at least the right and left sections or side frame members are respectively formed in a substantially Z-shaped configuration. Namely, each of the side frame members comprises a vertically extending web, an upper flange and a lower flange projecting in opposing directions to each other with respect to the web, whereby, when loads are applied to the side frame members, the respective centers of shearing thereof are caused to exist in their webs or adjacent portions thereof, resulting in the increased strength.
Inventors
- 👤 Shoh Yokoyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:23
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/02; B60N2/04; B60N2/16; B60N2/1635; B60N2/165; B60N2/1605; B60N2/161; B60N2/1615
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
125 words
A seat frame comprising: first and second side frame members each comprising a vertically extending web, an upper flange element integrally formed on an upper edge of said web and a lower flange element integrally formed along a lower edge of said web, said upper and lower flanges projecting horizontally in opposite directions from said web; a front frame member welded to a forward end of each of said side frame members, said front frame member having a channel-shaped configuration and including an upper flange and a lower flange, said upper flange of said front frame member being longer than said lower flange of said front frame member; and a rear frame member welded to a rearward end of each of said side frame members.
Claim 2
Dependent Claim
125 words
A seat frame comprising: first and second side frame members each comprising a vertically extending web, an upper flange element integrally formed on an upper edge of said web and a lower flange element integrally formed along a lower edge of said web, said upper and lower flanges projecting horizontally in opposite directions from said web; a front frame member welded to a forward end of each of said side frame members, said front frame member having a channel-shaped configuration and including an upper flange and a lower flange, said upper flange of said front frame member being longer than said lower flange of said front frame member; and a rear frame member welded to a rearward end of each of said side frame members.
Claim 3
Dependent Claim
41 words
A seat frame as in claim 1, wherein said upper flange of each of said side frame members projects inwardly relative to said web and said lower flange of each of said side frame members projects outwardly relative to said web.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-06-15 | 1990-12-15 | 1991-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-15 | 1994-12-15 | 1995-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-15 | 1998-12-15 | 1999-06-16 | $7700.00 | Window Closed / Lapsed |