Patent US4352420A successfully refreshed from Google Patents.
US4352420A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction clutch driven plate
Assignee: Whitnash PLC
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Filing: 1980-05-06
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Granted: 1982-10-05
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Expires: 2000-05-06
Abstract
Abstract A motor vehicle clutch driven plate having a flanged hub comprising a pressed annular metal plate having a central cylindrical neck and a central insert. The insert has inner splines for mating with a shaft and outer teeth for engagement in the neck. The insert is a force fit into the neck so that engagement of the teeth with the internal surface of the neck holds the insert in its operative position relative to the plate which then constitutes the hub flange. Such a construction allows a large number of inserts having different internal splines to be used with a single metal plate.
Inventors
- 👤 Ian C. Maycock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:10
CPC Classifications
F; F16; F16D; F16D13/00; F16D13/58; F16D13/60; F16D13/64; F16D13/644; F16D13/646; F16D1/00; F16D1/06; F16D1/064; F16D1/072
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
149 words
A friction clutch driven plate having a hub with a circumferential flange thereon, said hub comprising: an annular metal plate having a central cylindrical neck, and an annular central insert having inner splines for mating with a shaft and outer teeth for engagement on the neck, the insert being a force fit into the neck to hold the insert against axial movement and by engagement of its outer teeth on the neck to hold the insert against rotational movement relative to the plate, said plate then constituting a hub flange; an annular friction facing carrier co-axial with the hub and arranged to one side of the flange; a retainer plate rotationally fast with the flange and arranged on the opposite side of the carrier to said flange so as to sandwich the carrier therebetween; and a spring ring forced over said neck to hold the retainer axially in position.
Claim 2
Dependent Claim
149 words
A friction clutch driven plate having a hub with a circumferential flange thereon, said hub comprising: an annular metal plate having a central cylindrical neck, and an annular central insert having inner splines for mating with a shaft and outer teeth for engagement on the neck, the insert being a force fit into the neck to hold the insert against axial movement and by engagement of its outer teeth on the neck to hold the insert against rotational movement relative to the plate, said plate then constituting a hub flange; an annular friction facing carrier co-axial with the hub and arranged to one side of the flange; a retainer plate rotationally fast with the flange and arranged on the opposite side of the carrier to said flange so as to sandwich the carrier therebetween; and a spring ring forced over said neck to hold the retainer axially in position.
Claim 3
Dependent Claim
38 words
A clutch driven plate as claimed in claim 1, wherein the neck is internally toothed and the outer teeth on the insert interengage with the teeth on the neck to rotationally lock the insert relative to the flange.
Claim 4
Dependent Claim
37 words
A clutch driven plate as claimed in claim 2, wherein the insert is headed to locate, by abutment of the head against the neck, the relative axial positions of the insert and flange formed by the plate.
Claim 5
Dependent Claim
29 words
A clutch driven plate as claimed in claim 1, wherein the spring ring has internally projecting barbs that engage the neck to oppose axial withdrawal of the retainer plate.
Claim 6
Dependent Claim
39 words
A driven plate as claimed in claim 1, wherein the carrier plate is made from spring steel and its radially inner peripheral margin is formed into a friction damper spring to bias the carrier plate towards the retainer plate.
Claim 7
Dependent Claim
23 words
A driven plate as claimed in claim 5, wherein the inner margin of the carrier plate is supported by an annular reinforcing plate.
Claim 8
Dependent Claim
36 words
A driven plate as claimed in claim 1, wherein the hub flange and retainer plate are rotationally locked together by lugs on one of said flange and plate, co-operating with other of said flange and plate.
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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) | 1985-10-04 | 1986-04-05 | 1986-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-10-04 | 1990-04-05 | 1990-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-10-04 | 1994-04-05 | 1994-10-05 | $7700.00 | Window Closed / Lapsed |