US4767157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seat lifter
Assignee: Aisin Corp
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Filing: 1987-02-03
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Granted: 1988-08-30
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Expires: 2007-02-03
Abstract
Abstract The seat lifter according to the invention includes a front and rear links supporting the upper bracket member and the upper bracket member has a first upper bracket supporting a seat cushion of the seat and a second upper bracket supporting a seat back of the seat. Thus, the seat back and seat cushion of the seat are respectively moved in the independent state. Particularly, a pair of second pivoting member respectively pivoting the front and rear links on the first upper bracket positions approximately in a rear direction in respect of a pair of first pivoting member and a pair of third pivoting member respectively pivoting the front and rear links on said second upper bracket positions approximately in an upper direction in respect of said first pivoting. In accordance with lifting the seat cushion by rotating the both links around the first pivoting member, the seat back moves in a forward direction and the size of the seat cushion is minimized.
Inventors
- 👤 Kenichi Kazaoka
- 👤 Hiroshi Okazaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:27
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/02; B60N2/04; B60N2/16; B60N2/1635; B60N2/167; B60N2/1605; B60N2/161; B60N2/1615; B60N2/168
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
377 words
A seat lifting apparatus for a seat having a seat cushion and a seat back, said apparatus comprising: bracket means adapted to be mounted on a floor; first seat supporting means for supporting said seat cushion; second seat supporting means having front and rear portions for supporting said first seat supporting means at corresponding front and rear portions thereof, said first seat supporting means being pivotally mounted thereon; seat back supporting means for supporting said seat back adjacent said rear portion of said second seat supporting means; link means pivotally connected at first pivot locations, on said link means, to said bracket means on opposite sides of said second seat supporting means, said link means including front link members and rear link members, said front portion of said second set supporting means being fixedly attached at second pivot locations to said front link members, said rear portion being fixedly attached at said second pivot locations to said rear link members, said second pivot locations being spaced a selected distance from said first pivot locations on said front and rear link members in a first selected direction for lifting said second seat supporting means and pivoting said first seat supporting means while moving said first and second seat supporting means in a forward direction upon rotation of said link means a selected angular distance about said first pivot location; seat back support pivot means pivotally connecting said link means, at third pivot locations, to said seat back supporting means adjacent said front and rear portions on opposite sides of said supporting means, said third pivot locations being spaced a selected distance from said first pivot locations on said link means in a second selected direction for moving said seat back supporting means together with said first seat supporting means upon said rotation of said link means about said first pivot locations; connecting means pivotally attached at one end to one of said rear link members and operatively connected at the other end to a spring coupler means mounted on the bracket means adjacent to one of said front link members; said spring coupler means operatively connected to said connecting means and said link means for rotating said link means about said first pivot location said selected angular distance.
Claim 2
Dependent Claim
377 words
A seat lifting apparatus for a seat having a seat cushion and a seat back, said apparatus comprising: bracket means adapted to be mounted on a floor; first seat supporting means for supporting said seat cushion; second seat supporting means having front and rear portions for supporting said first seat supporting means at corresponding front and rear portions thereof, said first seat supporting means being pivotally mounted thereon; seat back supporting means for supporting said seat back adjacent said rear portion of said second seat supporting means; link means pivotally connected at first pivot locations, on said link means, to said bracket means on opposite sides of said second seat supporting means, said link means including front link members and rear link members, said front portion of said second set supporting means being fixedly attached at second pivot locations to said front link members, said rear portion being fixedly attached at said second pivot locations to said rear link members, said second pivot locations being spaced a selected distance from said first pivot locations on said front and rear link members in a first selected direction for lifting said second seat supporting means and pivoting said first seat supporting means while moving said first and second seat supporting means in a forward direction upon rotation of said link means a selected angular distance about said first pivot location; seat back support pivot means pivotally connecting said link means, at third pivot locations, to said seat back supporting means adjacent said front and rear portions on opposite sides of said supporting means, said third pivot locations being spaced a selected distance from said first pivot locations on said link means in a second selected direction for moving said seat back supporting means together with said first seat supporting means upon said rotation of said link means about said first pivot locations; connecting means pivotally attached at one end to one of said rear link members and operatively connected at the other end to a spring coupler means mounted on the bracket means adjacent to one of said front link members; said spring coupler means operatively connected to said connecting means and said link means for rotating said link means about said first pivot location said selected angular distance.
Claim 3
Dependent Claim
62 words
The seat lifting apparatus according to claim 1 wherein said spring coupler means comprises a manually operable clutch means operatively coupled to said front link member and said connecting means to pivot said link means said selected angular distance about said first pivot locations, said clutch means being operative to hold said link means against further rotation upon cessation of manual operation.
Claim 4
Dependent Claim
123 words
The seat lifting apparatus according to claim 2 wherein said clutch means comprises a base member surrounding said front link member, a drive member mounted on said link member within said base member, a driven member rotatably mounted on said front link member so as to be rotatable with the rotation of said front link member through said drive member, a coil spring around said link and frictionally connected to said base member for arresting rotation of said driven member and said spring, means operatively connected to said drive member for releasing said coil spring from said base member upon rotation of said front link member by said drive member in order to permit rotation of the driven member with said drive member.
Claim 5
Dependent Claim
61 words
The seat lifting apparatus according to claim 1 wherein said front portion of said second seat supporting means comprises a front connecting pipe disposed between each front link member for supporting the front of the seat cushion, and wherein said rear portion comprises a rear connecting pipe disposed between each rear link member for supporting the rear of the seat cushion.
Claim 6
Dependent Claim
49 words
The lifting apparatus as set forth in claim 4 wherein the selected distance of said second pivot location from said first pivot location on said front link member is greater than the selected distance of said second pivot location from said first pivot location on said rear link member.
Claim 7
Dependent Claim
268 words
A seat lifting apparatus for a seat having a seat cushion and a seat back, said apparatus comprising: bracket means adapted to be mounted on a floor; seat supporting means including seat frames on opposite sides of said seat cushion for supporting said seat; seat back supporting means pivotally mounted on said seat supporting means for supporting said seat back adjacent a rear portion of said seat frames; link means including a pair of front link members and a pair of rear link members, each of said front link members being pivotally connected to said bracket means adjacent a front portion of said seat frames on opposite sides of said seat cushion, each said rear link members being pivotally connected to said bracket means adjacent said rear portion of said seat frames, said link means being pivotally connected to said bracket means at a first pivot location on each respective link member; seat support pivot means for pivotally connecting front and rear portions of said seat frames to a second pivot location on each of said front and rear link members respectively, said second pivot location being spaced a selected distance and in a selected direction from said first pivot location on each respective link member; a side connecting member pivotally attached at one end to one of said rear link members and operatively connected at the other end to a spring coupler means mounted on the bracket means adjacent to one of said front link members; said spring coupler means operatively connected to said side connecting member for rotating said link members about said first pivot location.
Claim 8
Dependent Claim
268 words
A seat lifting apparatus for a seat having a seat cushion and a seat back, said apparatus comprising: bracket means adapted to be mounted on a floor; seat supporting means including seat frames on opposite sides of said seat cushion for supporting said seat; seat back supporting means pivotally mounted on said seat supporting means for supporting said seat back adjacent a rear portion of said seat frames; link means including a pair of front link members and a pair of rear link members, each of said front link members being pivotally connected to said bracket means adjacent a front portion of said seat frames on opposite sides of said seat cushion, each said rear link members being pivotally connected to said bracket means adjacent said rear portion of said seat frames, said link means being pivotally connected to said bracket means at a first pivot location on each respective link member; seat support pivot means for pivotally connecting front and rear portions of said seat frames to a second pivot location on each of said front and rear link members respectively, said second pivot location being spaced a selected distance and in a selected direction from said first pivot location on each respective link member; a side connecting member pivotally attached at one end to one of said rear link members and operatively connected at the other end to a spring coupler means mounted on the bracket means adjacent to one of said front link members; said spring coupler means operatively connected to said side connecting member for rotating said link members about said first pivot location.
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) | 1991-08-30 | 1992-02-29 | 1992-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-30 | 1996-02-29 | 1996-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-30 | 2000-02-29 | 2000-08-30 | $7700.00 | Window Closed / Lapsed |