US3635320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clutch flywheel
Assignee: Individual
•
Filing: 1969-12-31
•
Granted: 1972-01-18
•
Expires: 1989-12-31
Abstract
Abstract A bimetal flywheel for clutches including a steel inner disc and an outer aluminum ring secured together by interlock means, the steel disc including a smooth radial surface for bearing against a disc of a clutch assembly and the outer ring being adapted to carry a cover for the clutch assembly, and the interlock means opposing separation of the inner disc and outer ring as the disc presses against the radial face when the associated clutch is engaged.
Inventors
- 👤 Anthony Capanna
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:05
CPC Classifications
F; F16; F16D; F16D13/00; F16D13/22; F16D13/38; F16D13/46; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2121; Y10T74/2132
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
114 words
A A clutch flywheel comprising: an inner disc of a relatively heavy, hard metallic material adapted for connection to an end of and for rotation with an engine crankshaft and defining an inner central core for said flywheel, said inner disc having an annular periphery and opposing radial faces comprising inner portions of opposite sides of said flywheel, one of said radial faces having a smooth annular portion for bearing against a clutch disc; an outer lightweight metal ring having an inner annular surface around said annular periphery of said inner disc; and interlock means on said annular inner surface and said annular periphery for locking together said inner disc and said outer ring.
Claim 2
Dependent Claim
114 words
A A clutch flywheel comprising: an inner disc of a relatively heavy, hard metallic material adapted for connection to an end of and for rotation with an engine crankshaft and defining an inner central core for said flywheel, said inner disc having an annular periphery and opposing radial faces comprising inner portions of opposite sides of said flywheel, one of said radial faces having a smooth annular portion for bearing against a clutch disc; an outer lightweight metal ring having an inner annular surface around said annular periphery of said inner disc; and interlock means on said annular inner surface and said annular periphery for locking together said inner disc and said outer ring.
Claim 3
Dependent Claim
70 words
The flywheel of claim 1 wherein said interlock means comprise a slot in said periphery of said inner disc and a projection on said outer ring nesting tightly in said slot and said slot and said projection having mating shoulders for bearing against each other and opposing separation of said inner disc and said outer ring with pressure of said clutch disc against said annular portion of said radial face.
Claim 4
Dependent Claim
21 words
The flywheel of claim 2 wherein said interlock means further includes screw means extending through said projection into said inner disc.
Claim 5
Dependent Claim
92 words
The flywheel of claim 1 wherein said interlock means comprises an annular slot in said periphery of said inner disc open at a side thereof opposite said one radial face to define a step in said periphery having a radial shoulder and an axial base and an annular pRojection from said inner annular surface of said outer ring tightly engaging said axial base and including a shoulder mating with said radial shoulder to oppose separation of said outer ring as said clutch disc presses against said annular portion of said radial face.
References Cited (Backward Citations)
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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) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |