US4606578A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Head-rest
Assignee: Tachi S Co Ltd
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Filing: 1984-07-30
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Granted: 1986-08-19
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Expires: 2004-07-30
Abstract
Abstract A head-rest is disclosed in which the lower ends of the stays are fixed to a seat frame of a seat back and a head-rest body is mounted to these stays in a manner that it is free to move in a vertical direction so as to provide a deeper recessed cavity in the rear of the seat back.
Inventors
- 👤 Takashi Yasui
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:17
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/80; B60N2/806; B60N2/809; B60N2/812; B60N2/818; B60N2/815; B60N2/838; B60N2/894
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
343 words
A head rest for a vehicle seat comprising, in combination: a pair of separated elongated head rest stays; means adapted for rigidly connecting a lower end of each said head rest stay to said vehicle seat such that said head rest stays extend above said vehicle seat; a head rest body having forward and rearward separated walls and a central support plate rigidly connected at each of its respective ends to said forward and rearward walls such that said support plate is positioned within a space defined between said separated head rest stays; adjustment means for coupling said head rest body to said head rest stays to permit said head rest body to be reciprocally movable relative to said head rest stays between raised and lowered positions and to permit said head rest body to be pivotally movable about an adjustment axis between forward and rearward inclined positions, said adjustment means including: (a) a pair of holders each defining an elongate aperture for slidably receiving a respective one of said head rest stays therein such that each said holder is slidable along said respective head rest stay between positions corresponding to said raised and lowered positions of said head rest body; (b) a support shaft extending transversely to said support plate and rigidly interconnecting said pair of holders to establish said adjustment axis; (c) coupling means for coupling said support plate to said support shaft, (d) said coupling means including friction retaining means for frictionally gripping said support shaft to retain said head rest body in one of a plurality of inclined positions between said forward and rearward positions, inclusive, while yet permitting said head rest body to be forcibly pivoted about said adjustment axis into said one inclined position, wherein (e) said coupling means also couples said support plate to each said holder via said support shaft such that said support plate, and thus said head rest body, is reciprocally movable together with said holders between said raised and lowered positions when said holders are slidably moved along said head rest stays.
Claim 2
Dependent Claim
343 words
A head rest for a vehicle seat comprising, in combination: a pair of separated elongated head rest stays; means adapted for rigidly connecting a lower end of each said head rest stay to said vehicle seat such that said head rest stays extend above said vehicle seat; a head rest body having forward and rearward separated walls and a central support plate rigidly connected at each of its respective ends to said forward and rearward walls such that said support plate is positioned within a space defined between said separated head rest stays; adjustment means for coupling said head rest body to said head rest stays to permit said head rest body to be reciprocally movable relative to said head rest stays between raised and lowered positions and to permit said head rest body to be pivotally movable about an adjustment axis between forward and rearward inclined positions, said adjustment means including: (a) a pair of holders each defining an elongate aperture for slidably receiving a respective one of said head rest stays therein such that each said holder is slidable along said respective head rest stay between positions corresponding to said raised and lowered positions of said head rest body; (b) a support shaft extending transversely to said support plate and rigidly interconnecting said pair of holders to establish said adjustment axis; (c) coupling means for coupling said support plate to said support shaft, (d) said coupling means including friction retaining means for frictionally gripping said support shaft to retain said head rest body in one of a plurality of inclined positions between said forward and rearward positions, inclusive, while yet permitting said head rest body to be forcibly pivoted about said adjustment axis into said one inclined position, wherein (e) said coupling means also couples said support plate to each said holder via said support shaft such that said support plate, and thus said head rest body, is reciprocally movable together with said holders between said raised and lowered positions when said holders are slidably moved along said head rest stays.
Claim 3
Dependent Claim
36 words
A head rest as in claim 1 wherein said coupling means includes a cylindrical friction bushing surrounding said support shaft in frictional engagement therewith, and a bracket to couple said friction bushing to said support plate.
Claim 4
Dependent Claim
34 words
A head rest as in claim 1 wherein said support shaft at each end thereof includes a holder bracket, each said holder bracket, in turn, being connected to a respective one of said holders.
Claim 5
Dependent Claim
33 words
A head rest as in claim 1 further comprising lock means for removably locking said head rest body in one of a plurality of height positions between said raised and lowered positions, inclusive.
Claim 6
Dependent Claim
115 words
A head rest as in claim 4 wherein one of said holders includes a lower flange defining a slot transverse to said respective one of said head rest stays, and wherein said lock means includes (i) plural longitudinally spaced notches defined in said respective one head rest stay, (ii) a stopper member pivotally connected to said flange and positioned within said slot so as to be transversely pivotal relative to said respective one head rest stay between an engaged position wherein a respective one of said notches is engaged and a disengaged position wherein said stopper member is disengaged from said notches, and (iii) spring means for biasing said stopper member into said engaged position.
Claim 7
Dependent Claim
29 words
A head rest as in claim 5 wherein said stopper member includes a lever to permit said stopper member to be manually moved between said engaged and disengaged positions.
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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) | 1989-08-18 | 1990-02-17 | 1990-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-18 | 1994-02-17 | 1994-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-18 | 1998-02-17 | 1998-08-19 | $7700.00 | Window Closed / Lapsed |