US4943116A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reclining angle adjustment device
Assignee: Individual
•
Filing: 1989-02-06
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Granted: 1990-07-24
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Expires: 2009-02-06
Abstract
Abstract A reclining angle adjustment device for a seat includes a shaft having a concentric portion and an eccentric portion and rotatable for adjusting the reclining angle of the seat, a tapered bushing having a tapered inner peripheral surface engaging the eccentric portion along the shaft, a gear train including an external gear and an internal gear meshing with the internal gear, the internal gear having more teeth than the external gear, a first arm having one of the external and internal gears which is rotatably fitted at its center over the concentric portion, and a second arm having the other gear which is rotatably fitted at its center over the tapered bushing. A resilient member normally presses the tapered bushing axially of the shaft in a direction to strengthen meshing engagement between the external and internal gears.
Inventors
- 👤 Akira Ohwada
- 👤 Masanori Sakai
- 👤 Yasuhisa Tsutsumi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:07
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/02; B60N2/22; B60N2/225; B60N2/2252; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19623
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
161 words
A reclining angle adjustment device for a seat, comprising: a shaft having a concentric portion and an eccentric portion and rotatable for adjusting the reclining angle of the seat; a tapered bushing having a tapered inner peripheral surface engaging said eccentric portion of the shaft; a gear train including an external gear and an internal gear meshing with said external gear, said internal gear having more teeth than said external gear; a first arm having one of said external and internal gears, said one of the external and internal gears being rotatably fitted at its center over said concentric portion; a second arm having the other of said external and internal gears, said other of the eternal and internal gears being rotatably fitted at its center over said tapered bushing; and a resilient member engaging said tapered bushing for normally pressing the tapered bushing axially along said shaft in a direction to strengthen meshing engagement between said external and internal gears.
Claim 2
Dependent Claim
161 words
A reclining angle adjustment device for a seat, comprising: a shaft having a concentric portion and an eccentric portion and rotatable for adjusting the reclining angle of the seat; a tapered bushing having a tapered inner peripheral surface engaging said eccentric portion of the shaft; a gear train including an external gear and an internal gear meshing with said external gear, said internal gear having more teeth than said external gear; a first arm having one of said external and internal gears, said one of the external and internal gears being rotatably fitted at its center over said concentric portion; a second arm having the other of said external and internal gears, said other of the eternal and internal gears being rotatably fitted at its center over said tapered bushing; and a resilient member engaging said tapered bushing for normally pressing the tapered bushing axially along said shaft in a direction to strengthen meshing engagement between said external and internal gears.
Claim 3
Dependent Claim
60 words
A reclining angle adjustment device according to claim 1, wherein said external gear is disposed on said first arm, said internal gear is disposed on said second arm, further inducing a cover cooperating with said first arm in sandwiching said second arm therebetween, said resilient member being disposed between said cover and said second arm for pressing said tapered bushing.
Claim 4
Dependent Claim
22 words
A reclining angle adjustment device according to claim 2, wherein said resilient member comprises a circular plate through which said shaft extends.
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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) | 1993-07-23 | 1994-01-22 | 1994-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-23 | 1998-01-22 | 1998-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-23 | 2002-01-22 | 2002-07-24 | $7700.00 | Window Closed / Lapsed |