US3900225A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fitting for a seat having a seat element and a tiltable backrest element
Assignee: Fritz Keiper KG
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Filing: 1974-02-06
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Granted: 1975-08-19
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Expires: 1994-02-06
Abstract
Abstract A first plate member of the fitting is connectable with the seat element, and a second plate member is connectable with the tiltable backrest element. A pivot connects the two members for relative pivotal displacement about a pivot axis. The second plate member is formed with an arcuate gear segment concentric with an arcuate ratchet segment the centers of curvature of which coincide with the axis, and a gear is turnably journalled on the first plate member and meshes with the gear segment. A pawl arrangement is pivoted on the first plate member and is responsive to rapid relative pivoting of the first and second members about the pivot axis thereof by engaging the ratchet segment in order to thereby block the further pivoting, while remaining out of engagement with the ratchet segment if the first and second members are pivoted relatively slowly about the pivot axis.
Inventors
- 👤 Egon Wirtz
- 👤 Paul Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:17
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/24; B60N2/42; B60N2/433
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
213 words
A fitting for a seat having a seat element and a tiltable backrest element, particularly for a vehicle seat, comprising a first plate member connectable with one of said elements; a second plate member connectable with the other of said elements; pivot means connecting said members for relative pivotal displacement about a pivot axis; an arcuate gear segment concentric with an arcuate ratchet segment on said second plate member, both said segments having centers of curvature which coincide with said axis; a gear; journalling means journalling said gear on said first plate member so that the teeth of said gear mesh with said gear segment; pawl means; having first and second ends operatively engageable with said ratchet segment, said second end being normally biased out of engagement with said ratchet segment and mounting means pivotably mounting said pawl means on said first plate member, the pawl means being freely rockable and wherein rapid relative pivoting of said members about said axis causes said first end of said pawl means to cam said second end into blocking engagement with said ratchet segment to prevent further relative pivoting, while during slower relative pivoting of said members about said pivot axis said second end is free to move out of blocking engagement with said ratchet segment.
Claim 2
Dependent Claim
213 words
A fitting for a seat having a seat element and a tiltable backrest element, particularly for a vehicle seat, comprising a first plate member connectable with one of said elements; a second plate member connectable with the other of said elements; pivot means connecting said members for relative pivotal displacement about a pivot axis; an arcuate gear segment concentric with an arcuate ratchet segment on said second plate member, both said segments having centers of curvature which coincide with said axis; a gear; journalling means journalling said gear on said first plate member so that the teeth of said gear mesh with said gear segment; pawl means; having first and second ends operatively engageable with said ratchet segment, said second end being normally biased out of engagement with said ratchet segment and mounting means pivotably mounting said pawl means on said first plate member, the pawl means being freely rockable and wherein rapid relative pivoting of said members about said axis causes said first end of said pawl means to cam said second end into blocking engagement with said ratchet segment to prevent further relative pivoting, while during slower relative pivoting of said members about said pivot axis said second end is free to move out of blocking engagement with said ratchet segment.
Claim 3
Dependent Claim
25 words
A fitting as defined in claim 1 wherein at least one of said gear segment or said ratchet segment is formed on said second member.
Claim 4
Dependent Claim
41 words
A fitting as defined in claim 2, wherein said second member has two arms which are located at opposite sides of said pivot axis; and wherein both said gear segment and said ratchet segment are formed on one of said arms.
Claim 5
Dependent Claim
17 words
A fitting as defined in claim 3, wherein said second member is connectable with said backrest elemEnt.
Claim 6
Dependent Claim
17 words
A fitting as defined in claim 1, wherein said second member is connectable with said backrest element.
Claim 7
Dependent Claim
26 words
A fitting as defined in claim 1; and further comprising releasable blocking means associated with said gear for normally blocking relative pivotal displacement of said members.
Claim 8
Dependent Claim
25 words
A fitting as defined in claim 6; and further comprising releasing means for releasing said blocking means to permit relative pivotal displacement of said members.
Claim 9
Dependent Claim
36 words
A fitting as defined in claim 3, wherein said one arm is formed with an arcuate cutout bounded by an edge portion; and wherein said gear segment is formed in said edge portion bounding said cutout.
Claim 10
Dependent Claim
36 words
A fitting as defined in claim 8, wherein said one arm has a free edge portion extending along said edge portion of said cutout; and wherein said ratchet segment is formed in said free edge portion.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-18 | 1979-02-17 | 1979-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-18 | 1983-02-17 | 1983-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-18 | 1987-02-17 | 1987-08-19 | $7700.00 | Window Closed / Lapsed |