Patent US5658043A successfully refreshed from Google Patents.
US5658043A
Expired / Lapsed
US
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Inertia lock for side-mounted armrest
Assignee: Lear Corp
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Filing: 1995-12-28
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Granted: 1997-08-19
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Expires: 2015-12-28
Abstract
Abstract A seat assembly (10) for use in automotive vehicles includes a seat frame (18) and an armrest frame (20) that is pivotally supported on the seat frame (18) for pivotal movement between an armrest position and an upright position. An inertia lock member (26) that is pivotally supported on the armrest frame (20) pivots into engagement with a stop member (24) that is supported on the seat frame (18) when the armrest (16) is in the upright position and subjected to a predetermined inertia force (31) under certain vehicle deceleration conditions. The inertia lock member (26) is operative to maintain the armrest (16) in the upright position and allows a seat occupant to move the armrest (16) into an armrest support position under normal use conditions.
Inventors
- 👤 Russell K. Davidson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:44
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/75; B60N2/753; B60N2/24; B60N2/42; B60N2/43
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
135 words
A seat assembly, comprising: a seat frame; an armrest frame pivotally supported by said seat frame for pivotal movement between an armrest position and an upright position; a stop member supported on said seat frame; and an inertia lock member pivotally supported on said armrest frame for pivotal movement into engagement with said stop member upon said armrest frame being in said upright position and being subjected to a predetermined inertia force during a deceleration condition for preventing movement of said armrest frame from said upright position in said deceleration condition and a cam plate (34) supported on said armrest frame (20) for movement with said armrest frame and wherein said cam plate (34) includes a first abutment surface (38) for abutting said stop member (24) when said armrest frame is in said armrest position.
Claim 2
Dependent Claim
135 words
A seat assembly, comprising: a seat frame; an armrest frame pivotally supported by said seat frame for pivotal movement between an armrest position and an upright position; a stop member supported on said seat frame; and an inertia lock member pivotally supported on said armrest frame for pivotal movement into engagement with said stop member upon said armrest frame being in said upright position and being subjected to a predetermined inertia force during a deceleration condition for preventing movement of said armrest frame from said upright position in said deceleration condition and a cam plate (34) supported on said armrest frame (20) for movement with said armrest frame and wherein said cam plate (34) includes a first abutment surface (38) for abutting said stop member (24) when said armrest frame is in said armrest position.
Claim 3
Dependent Claim
37 words
The assembly (10) of claim 1, wherein said armrest frame (20) includes a rest member (30) and said lock member (26) is gravitationally biased against said rest member when said armrest frame is in said upright position.
Claim 4
Dependent Claim
36 words
The assembly (10) of claim 2, wherein said lock member (26) includes first and second ends and wherein said lock member pivots relative to said armrest frame about a pivot axis (28) proximate said first end.
Claim 5
Dependent Claim
20 words
The assembly (10) of claim 3, wherein said lock member (26) engages said stop member (24) at said second end.
Claim 6
Dependent Claim
56 words
The assembly (10) of claim 4, wherein said lock member (26) includes a bearing surface (44) that extends between said first and second ends and bears against said stop member (24) when said armrest frame (20) is moved from said armrest position toward said upright position for moving said lock member toward said rest member (30).
Claim 7
Dependent Claim
36 words
The assembly (10) of claim 5, wherein said lock member (26) has a length, a width and a thickness and wherein said length is greater than said width and said width is greater than said thickness.
Claim 8
Dependent Claim
17 words
The assembly (10) of claim 6, wherein said lock member (26) is substantially flat and generally rectangular.
Claim 9
Dependent Claim
34 words
The assembly (10) of claim 1, wherein said cam plate (34) further includes a second abutment surface (40) for abutting said stop member (24) when said armrest frame (20) is in said upright position.
Claim 10
Dependent Claim
42 words
The assembly (10) of claim 8, wherein said cam plate (34) further includes a limiting portion (42), between said first and second abutment surfaces, for engaging said lock member (26) and limiting movement of said lock member responsive to said inertia force.
Claim 11
Dependent Claim
84 words
The assembly (10) of claim 4, wherein said armrest frame includes a generally arcuate slot (32) for receiving said stop member (24), said slot including a first end near said cam plate first abutment surface and a second end near said cam plate second abutment surface such that said stop member effectively moves along said slot from a position near one of said ends to another position near the other said end as said armrest frame (20) pivots between said upright and armrest positions.
Claim 12
Dependent Claim
57 words
The assembly (10) of claim 10, wherein said limiting portion (42) is a generally arcuate surface extending between said first and second abutment surfaces and wherein said generally arcuate surface of said limiting portion is disposed proximate a central portion of said arcuate slot (32) that extends between said slot first end and said slot second end.
Claim 13
Dependent Claim
21 words
The assembly of (10) claim 10, wherein said stop member (24) comprises a pin that protrudes through said arcuate slot (32).
Claim 14
Dependent Claim
31 words
The assembly (10) of claim 1, wherein said armrest frame (20) pivots between said upright and armrest positions about a pivot axis (22) that is defined through said cam plate (34).
Claim 15
Dependent Claim
32 words
The assembly (10) of claim 1, further comprising a lock plate (46) supported for movement with said armrest frame (20), said inertia lock member (26) being pivotally coupled to said lock plate.
Claim 16
Dependent Claim
38 words
The assembly (10) of claim 14, wherein said lock plate (46) includes a rest member (30) and said inertia lock member (26) is gravitationally biased into said rest member when said armrest frame is in said upright position.
Claim 17
Dependent Claim
19 words
The assembly of claim 15, wherein said rest member (30) comprises a notch defined on said lock plate (46).
References Cited (Backward Citations)
US2873794A
Cited
US3549202A
Cited
US3909063A
Cited
DE2502727A1
Cited
DE2641587A1
Cited
US4318569A
Cited
US4579384A
Cited
US4655501A
Cited
US4634182A
Cited
US4733912A
Cited
DE3701419A1
Cited
US4846526A
Cited
US4909571A
Cited
US5100202A
Cited
US4973017A
Cited
US5265937A
Cited
US5476307A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-08-18 | 2001-02-17 | 2001-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-08-18 | 2005-02-17 | 2005-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-08-18 | 2009-02-17 | 2009-08-19 | $7700.00 | Window Closed / Lapsed |