US3879802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hinge fitting for adjustably connecting a seat and a backrest to each other, especially for motor vehicles
Assignee: Fritz Keiper KG
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Filing: 1974-05-29
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Granted: 1975-04-29
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Expires: 1994-05-29
Abstract
Abstract A hinge fitting for adjustably connecting a seat element and a backrest element, especially for motor vehicle seats, in which a first hinge member connectable with one of the elements is provided with a ring gear having inwardly directed teeth and in which three radially extending locking bars, preferably displaced through 120* from each other and provided at the outer ends with teeth adapted to meshingly engage the teeth of the ring gear, are mounted on the other hinge member and guided for movement in radial direction. First and second cam means coaxially arranged with the ring gear cooperate with the locking bars to respectively move the latter in radially inward and outward directions to engage the teeth thereon with and to disengage the teeth from the teeth of the ring gear.
Inventors
- 👤 Paul Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:14
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/02; B60N2/22; B60N2/235; B60N2/2356; B60N2/236
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
219 words
A hinge fitting for adjustably connecting a seat element and a backrest element, especially for motor vehicle seats, comprising a first hinge member connectable with one of said elements and a second hinge member connectable with the other of said elements abutting with an end portion thereof against one face of said first hinge member; a ring gear having inwardly directed teeth provided on said first hinge member; three radially extending locking bars, provided at the outer ends with teeth adapted to meshingly engage with the teeth of said ring gear, mounted on said second hinge member circumferentially displaced from each other; means fixed to said second hinge member for guiding said locking bars movable in radial direction; first cam means turnable about an axis coaxial with said ring gear and cooperating with said locking bars for moving the same in radially outward direction to bring the teeth thereon in locking engagement with the teeth of said ring gear to thus hold the hinge members in fixed position relative to each other; and second cam means turnable about said axis and cooperating with said locking bars for moving the same in radially inward direction to disengage the teeth thereon from the teeth of said ring gear to thus permit angular adjustment of said hinge members relative to each other.
Claim 2
Dependent Claim
219 words
A hinge fitting for adjustably connecting a seat element and a backrest element, especially for motor vehicle seats, comprising a first hinge member connectable with one of said elements and a second hinge member connectable with the other of said elements abutting with an end portion thereof against one face of said first hinge member; a ring gear having inwardly directed teeth provided on said first hinge member; three radially extending locking bars, provided at the outer ends with teeth adapted to meshingly engage with the teeth of said ring gear, mounted on said second hinge member circumferentially displaced from each other; means fixed to said second hinge member for guiding said locking bars movable in radial direction; first cam means turnable about an axis coaxial with said ring gear and cooperating with said locking bars for moving the same in radially outward direction to bring the teeth thereon in locking engagement with the teeth of said ring gear to thus hold the hinge members in fixed position relative to each other; and second cam means turnable about said axis and cooperating with said locking bars for moving the same in radially inward direction to disengage the teeth thereon from the teeth of said ring gear to thus permit angular adjustment of said hinge members relative to each other.
Claim 3
Dependent Claim
21 words
Hinge fitting as defined in claim 1, wherein said locking bars are angularly displaced through, angles of 120* from each other.
Claim 4
Dependent Claim
65 words
Hinge fitting as defined in claim 1, wherein said locking bars have radially inner ends spaced from said axis and wherein said first cam means comprises a central cam having three circumferentially displaced lobe portions adapted to engage during turning of said first cam in one direction about said axis said inner ends of said locking bars for moving the same in radially outward direction.
Claim 5
Dependent Claim
60 words
Hinge fitting as defined in claim 3, wherein each of said locking bars has an axially projecting follower and wherein said second cam means comprises a disc provided with three cam faces arranged to respectively engage said followers to move, during turning of the disc in a direction opposite to said one direction, said locking bars in radially inward direction.
Claim 6
Dependent Claim
25 words
Hinge fitting as defined in claim 4, wherein said cam faces are provided on curved slots in said disc through which said followers respectively extend.
Claim 7
Dependent Claim
25 words
Hinge fitting as defined in claim 4, and including means connected to said first and second cam means for simultaneous turning movement above said axis.
Claim 8
Dependent Claim
76 words
Hinge fitting as defined in claim 1, wherein said means for guiding said locking bars movable in radial direction comprises a guide plate member having a central portion located radially inwardly of said ring gear and provided with three guide channel portions in which said locking bars are respectively received and with three guide flange portions projecting radially beyond said central portion and abutting with one face against the other face of said first hinge member.
Claim 9
Dependent Claim
47 words
Hinge fitting as defined in claim 7, wherein each of said channel portions has a wall portion substantially parallel and axial spaced from said second hinge member, said guide flange portions being located in one plane with said wall portions and forming tongue-like extensions of the same.
Claim 10
Dependent Claim
64 words
Hinge fitting as defined in claim 7, wherein said guide plate member is fixedly connected to said second hinge member, and wherein one of said two members is provided with three angularly displaced and radially extending slots, and each of said locking bars being provided with means projecTing in a respective one of said slots for guiding the respective locking bar in radial direction.
Claim 11
Dependent Claim
25 words
Hinge fitting as defined in claim 9, wherein each of said means projecting into said slots comprises a rib integral with the respective locking bar.
Claim 12
Dependent Claim
53 words
Hinge fitting as defined in claim 8, wherein each of said wall portions is provided with a radially extending slot having parallel side faces and each of said locking bars being provided with a rib projecting into the respective slot movable in radial direction for guiding the respective locking bar in said direction.
Claim 13
Dependent Claim
66 words
Hinge fitting as defined in claim 9, wherein each of said locking bars has an axially projecting follower, and wherein said second cam means comprises a disc having cam slots respectively cooperating with said followers to move said locking bars in radially inward direction during turning of said disc, said disc engaging that one of said two members which is provided with said radially extending slots.
Claim 14
Dependent Claim
82 words
Hinge fitting as defined in claim 7, wherein said guide plate member and said second hinge member are respectively provided with a plurality of circumferentially spaced aligned openings, and including a fitting member in each of said aligned openings and a screw means threadingly connected to each of said fitting members, said fitting members and said screw means having radially projecting end portions respectively engaging said guide plate member and said second hinge member at faces thereof facing away from each other.
Claim 15
Dependent Claim
17 words
Hinge fitting as defined in claim 7, wherein said guide plate is a stamped sheet metal part.
References Cited (Backward Citations)
US3737946A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-28 | 1978-10-28 | 1979-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-28 | 1982-10-28 | 1983-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-28 | 1986-10-28 | 1987-04-29 | $7700.00 | Window Closed / Lapsed |