US4923250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Headrest apparatus
Assignee: Aisin Corp
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Filing: 1988-02-26
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Granted: 1990-05-08
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Expires: 2008-02-26
Abstract
Abstract A headrest apparatus for vehicles comprises a pair of guide rails connected to a seatback frame, a pair of stays connected to the headrest, a pair of shoes moving along the guide rails, a rod connected at its ends to the shoes, means for moving the rod in an upward and downward direction, a cam member attached at an upper portion of each guide rail for urging the shoes in a horizontal direction and the headrest in an inclined position, and a spring member positioned on the shoes and biasing the shoes in the opposite direction of the direction in which the headrest is urged in the inclined position.
Inventors
- 👤 Takemi Hattori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:59
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/80; B60N2/806; B60N2/809; B60N2/829
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
123 words
An apparatus for adjusting the position of a headrest with respect to a vehicle seat, the seat including a back having a top and a frame, comprising: guide means including at least one guide rail for connection to the frame; a pair of stays for connection to the headrest; a pair of shoes, one shoe being attached to each stay for movement with respect to the guide rail; means, interacting with the guide rail, for biasing the shoes against the guide rail; and means for moving the shoes with respect to the guide rail and for moving the headrest with respect to the top of the seat, said moving means including a rod member connected between the pair of shoes for movement therewith.
Claim 2
Independent Claim
123 words
An apparatus for adjusting the position of a headrest with respect to a vehicle seat, the seat including a back having a top and a frame, comprising: guide means including at least one guide rail for connection to the frame; a pair of stays for connection to the headrest; a pair of shoes, one shoe being attached to each stay for movement with respect to the guide rail; means, interacting with the guide rail, for biasing the shoes against the guide rail; and means for moving the shoes with respect to the guide rail and for moving the headrest with respect to the top of the seat, said moving means including a rod member connected between the pair of shoes for movement therewith.
Claim 3
Dependent Claim
29 words
The apparatus of claim 1 wherein the moving means also includes means, substantially confined within the seatback, for turning the headrest with respect to the plane of the seatback.
Claim 4
Dependent Claim
29 words
The apparatus of claim 2 wherein the turning means includes camming means interacting with the shoe means for rotating the headrest with respect to the plane of the seatback.
Claim 5
Dependent Claim
63 words
The headrest apparatus of claim 3, wherein said camming means includes a pair of cam members, each cam member having a slit therein, and wherein each stay has a flat portion movable through said slit in each said cam member to allow said stays to be rotated relative to the plane of the seat back as said shoes interact with said cam members.
Claim 6
Dependent Claim
13 words
The apparatus of claim 1, wherein said biasing means includes a leaf spring.
Claim 7
Dependent Claim
19 words
The headrest apparatus of claim 1, wherein each said shoe has an aperture sized for receiving the rod member.
Claim 8
Dependent Claim
28 words
The headrest apparatus of claim 1, wherein each said guide rail has a lateral wall portion including an elongated hole for slidable movement of the rod member therein.
Claim 9
Dependent Claim
20 words
The headrest apparatus of claim 1 further comprising a nut member connected to a central portion of said rod member.
Claim 10
Dependent Claim
38 words
The headrest apparatus of claim 8, wherein said means for moving includes a threaded rod engageable with said nut member for moving said rod member and said shoes along said guide rails upon rotation of said threaded rod.
Claim 11
Dependent Claim
17 words
The headrest apparatus of claim 9 including means for providing a rotational torque to said threaded rod.
Claim 12
Dependent Claim
54 words
The headrest apparatus of claim 10, wherein said rotational torque means comprises a gear box engageable with said threaded rod, and a cable, connected at one end to said gear box and at the other end to an electric motor, said cable being rotated by said electric motor to thereby rotate said threaded rod.
References Cited (Backward Citations)
US2989341A
Cited
CH432747A
Cited
JPS5914530A
Cited
JPS60244632A
Cited
EP0209417A1
Cited
US4765683A
Cited
US4711494A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-05-07 | 1993-11-06 | 1994-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-07 | 1997-11-06 | 1998-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-07 | 2001-11-06 | 2002-05-08 | $7700.00 | Window Closed / Lapsed |