US5489143A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arm rest device
Assignee: Suncall Corp
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Filing: 1994-09-06
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Granted: 1996-02-06
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Expires: 2014-09-06
Abstract
Abstract A ratchet 3 is secured to a rotatable base plate structure 2 of an arm rest device 20. A Y-shaped pawl member 7 is pivotally attached to a stationary plate 6 by a pivot shaft 14 and a toggle spring 8. The stationary plate 6 includes a proximal end portion fitted over a fixation shaft 5. A tooth pawl 13 formed in one end portion of the Y-shaped pawl member 7 is engaged with a row of serrated teeth 10 of the ratchet 3 within a predetermined extent (from point A to point B) of pivotal movement of the base plate structure 2, by reason of urging load P from the toggle spring 8. Thus, the arm rest body 18 is fixed at a predetermined position. An engagement groove 32A in the Y-shaped lever 32 prevents the arm rest body in an accommodated position from being pivoted in a forward direction.
Inventors
- 👤 Takao Adachi
- 👤 Naomi Matoba
- 👤 Masayuki Katoh
- 👤 Hiroshi Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:06
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/75; B60N2/763; B60N2/767; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20636; Y10T74/20672; Y10T74/20696; Y10T74/20702
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
184 words
An arm rest device comprising a mechanism for adjusting an inclined/raised angle of an arm rest body, the mechanism including a base plate structure having a proximal end portion fitted rotatably over a fixation shaft protruding laterally from one lateral end of a seat frame of a seat back, a stationary plate having a proximal end portion fitted over said fixation shaft, a Y-shaped pawl member pivotally attached to said stationary plate by a pivot shaft, a toggle spring having one end fitted into and pivotally supported by said stationary plate and the other end pivotally fitted into a support hole formed in a first end portion of said Y-shaped pawl member, and a ratchet secured to said base plate structure, said ratchet having, in a surface thereof opposed to a tooth pawl formed in a second end portion of said Y-shaped pawl member, a row of serrated teeth arranged in an aligned manner, and a protrusion in a terminal portion of said row of serrated teeth for permitting release and commencement of engagement between said tooth pawl and the row of serrated teeth.
Claim 2
Dependent Claim
184 words
An arm rest device comprising a mechanism for adjusting an inclined/raised angle of an arm rest body, the mechanism including a base plate structure having a proximal end portion fitted rotatably over a fixation shaft protruding laterally from one lateral end of a seat frame of a seat back, a stationary plate having a proximal end portion fitted over said fixation shaft, a Y-shaped pawl member pivotally attached to said stationary plate by a pivot shaft, a toggle spring having one end fitted into and pivotally supported by said stationary plate and the other end pivotally fitted into a support hole formed in a first end portion of said Y-shaped pawl member, and a ratchet secured to said base plate structure, said ratchet having, in a surface thereof opposed to a tooth pawl formed in a second end portion of said Y-shaped pawl member, a row of serrated teeth arranged in an aligned manner, and a protrusion in a terminal portion of said row of serrated teeth for permitting release and commencement of engagement between said tooth pawl and the row of serrated teeth.
Claim 3
Dependent Claim
113 words
An arm rest device according to claim 1, wherein said toggle spring and said first end portion of said y-shaped pawl are arranged such that biassing by said toggle spring of said tooth pawl 13 toward said row of serrated teeth occurs in a section where said row of serrated teeth of said ratchet and said tooth pawl formed in the second end portion of said Y-shaped pawl member are opposed relative to one another, and biassing by said toggle spring of said tooth pawl away from said tooth of serrated teeth occurs in a section where said row of serrated teeth and said tooth pawl are not opposed relative to one another.
Claim 4
Dependent Claim
156 words
An arm rest device according to claim 1, further comprising means for locking an arm rest, said locking mechanism including a Y-shaped lever pivotally attached to said base plate structure by means of a support shaft, said Y-shaped lever having in a first end portion thereof an engagement groove for engaging with said stationary plate, a guide bracket secured to a rotatable frame on which said base plate structure is fixedly supported, said guide bracket having a hole, and unlock rod slidably inserted through said hole of said guide bracket and having a lower end pivotally fitted into a support hole formed in a second end portion of said Y-shaped lever, and a spring for biassing said Y-shape lever, said spring being extended between a hole formed in a third end portion of said Y-shaped lever and a pin disposed laterally of said stationary plate and upstanding from said rotatable frame for securing said spring thereto.
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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) | 1999-02-05 | 1999-08-07 | 2000-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-02-05 | 2003-08-07 | 2004-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-02-05 | 2007-08-07 | 2008-02-06 | $7700.00 | Window Closed / Lapsed |