Patent US3453041A successfully refreshed from Google Patents.
Patent US3791499A successfully refreshed from Google Patents.
US3791499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clutch
Assignee: Individual
•
Filing: 1972-01-03
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Granted: 1974-02-12
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Expires: 1992-01-03
Abstract
Abstract A clutch for transferring torque from an input to an output shaft which includes input and output clutch elements connected respectively to said shafts for rotation therewith and spring means for urging said clutch elements together including a pair of spring diaphragms arranged in adjacent relation whereby the summation of their resilient forces is realized.
Inventors
- 👤 J Ryan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:19
CPC Classifications
F; F16; F16D; F16D13/00; F16D13/22; F16D13/38; F16D13/385; F16D13/58; F16D13/583; F16D13/70; F16D13/71
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
124 words
Clutch mechanism operable to connect an input shaft to an output shaft which comprises an input clutch element connected to said input shaft for rotation therewith, an output clutch member keyed to said output shaft and shiftable axially thereof into clutching engagement with said input clutch element, and spring means for resiliently urging said clutch member against said input clutch element including first and second spring diaphragms arranged so that the resilient forces thereof are additive, said spring means including a retaining ring engaging the outer peripheries of said diaphragms, and a pressure plate connected to said retaining ring and axially movable into pressure contact with said clutch member, and said retaining ring being formed by two axially-adjustable sections enabling accommodation for clutch wear.
Claim 2
Dependent Claim
124 words
Clutch mechanism operable to connect an input shaft to an output shaft which comprises an input clutch element connected to said input shaft for rotation therewith, an output clutch member keyed to said output shaft and shiftable axially thereof into clutching engagement with said input clutch element, and spring means for resiliently urging said clutch member against said input clutch element including first and second spring diaphragms arranged so that the resilient forces thereof are additive, said spring means including a retaining ring engaging the outer peripheries of said diaphragms, and a pressure plate connected to said retaining ring and axially movable into pressure contact with said clutch member, and said retaining ring being formed by two axially-adjustable sections enabling accommodation for clutch wear.
Claim 3
Dependent Claim
133 words
Clutch mechanism operable to connect an input shaft to an output shaft which comprises an input clutch element connected to said input shaft for rotation therewith, an output clutch member keyed to said output shaft and shiftable axially thereof into clutching engagement with said input clutch element, and spring means for resiliently urging said clutch member against said input clutch element including first and second spring diaphragms arranged so that the resilient forces thereof are additive, said spring means including a retaining ring engaging the outer peripheries of said diaphragms, and a pressure plate connected to said retaining ring and axially movable into pressure contact with said clutch member, and a plurality of dowels connected to said input clutch element and arranged for close slidable driving reception in sockets in said pressure plate.
Claim 4
Dependent Claim
133 words
Clutch mechanism operable to connect an input shaft to an output shaft which comprises an input clutch element connected to said input shaft for rotation therewith, an output clutch member keyed to said output shaft and shiftable axially thereof into clutching engagement with said input clutch element, and spring means for resiliently urging said clutch member against said input clutch element including first and second spring diaphragms arranged so that the resilient forces thereof are additive, said spring means including a retaining ring engaging the outer peripheries of said diaphragms, and a pressure plate connected to said retaining ring and axially movable into pressure contact with said clutch member, and a plurality of dowels connected to said input clutch element and arranged for close slidable driving reception in sockets in said pressure plate.
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) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |