US4014423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clutch plate for a friction clutch
Assignee: ZF Friedrichshafen AG
•
Filing: 1973-07-30
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Granted: 1977-03-29
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Expires: 1993-07-30
Abstract
Abstract A driven plate for an automotive friction clutch having a hub unit and a disc unit rotatable on the hub unit and carrying the friction facings of the clutch is equipped with helical compression springs simultaneously received in respective openings of a hub flange and of two discs of the disc unit along a common circle about the clutch axis for damping relative motion of the two units. The two discs are axially fixedly connected by shoulder rivets which act as spacers and pass through openings in the hub flange also receiving respective damping springs.
Inventors
- 👤 Karl-Heinz Werner
- 👤 Gerhard Baron
- 👤 Kurt Fadler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:39
CPC Classifications
F; F16; F16F; F16F15/00; F16F15/10; F16F15/12; F16F15/121; F16F15/123
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
192 words
A clutch plate for a friction clutch comprising: a. a hub unit including a tubular hub member having an axis, and a flange member projecting from said hub member in a radially outward direction and fixedly fastened to said hub member; b. a disc unit including a first radial disc member and a second radial disc member coaxially rotatable relative to said hub unit and offset from said flange member in opposite axial directions, and a plurality of spacer members axially connecting said disc members for joint movement, 1. said flange member and said disc members being each formed with a plurality of openings extending axially therethrough, a portion of each opening in said flange member being circumferentially coextensive with respective openings in said disc members and constituting a set of three openings with the circumferentially coextensive openings in said disc members; and c. a helical compression spring simultaneously received in the three openings of each set, and extending tangentially relative to a circle about said axis, 1. said spacer members passing through respective openings in said flange member in radially outwardly offset relationship to the springs received in the same openings.
Claim 2
Dependent Claim
192 words
A clutch plate for a friction clutch comprising: a. a hub unit including a tubular hub member having an axis, and a flange member projecting from said hub member in a radially outward direction and fixedly fastened to said hub member; b. a disc unit including a first radial disc member and a second radial disc member coaxially rotatable relative to said hub unit and offset from said flange member in opposite axial directions, and a plurality of spacer members axially connecting said disc members for joint movement, 1. said flange member and said disc members being each formed with a plurality of openings extending axially therethrough, a portion of each opening in said flange member being circumferentially coextensive with respective openings in said disc members and constituting a set of three openings with the circumferentially coextensive openings in said disc members; and c. a helical compression spring simultaneously received in the three openings of each set, and extending tangentially relative to a circle about said axis, 1. said spacer members passing through respective openings in said flange member in radially outwardly offset relationship to the springs received in the same openings.
Claim 3
Dependent Claim
23 words
A clutch plate as set forth in claim 1, wherein said openings of said flange member are open in a radially outward direction.
Claim 4
Dependent Claim
96 words
A clutch plate as set forth in claim 2, wherein said flange member has two projections associated with each opening in said flange member, said projections circumferentially facing each other and bounding a radial orifice of said opening, said spacer member and said projections being radially substantially equidistant from said axis, whereby said projections limit circumferential movement of said spacer member relative to said flange member, said projections radially confining respective end portions of the spring received in said opening in at least one relative angular position of said disc unit relative to said hub unit.
Claim 5
Dependent Claim
55 words
A clutch plate as set forth in claim 1, wherein each spacer member and the associated spring are received in respective, radially offset portions of one of said openings in the flange member, the circumferential length of the portion receiving said spacer member being smaller than the corresponding dimension of the portion receiving said spring.
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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) | 1980-03-28 | 1980-09-27 | 1981-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-28 | 1984-09-27 | 1985-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-28 | 1988-09-27 | 1989-03-29 | $7700.00 | Window Closed / Lapsed |