US3693771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal clutch
Assignee: Pioneer Products Co
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Filing: 1970-09-08
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Granted: 1972-09-26
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Expires: 1990-09-08
Abstract
Abstract A centrifugal clutch having drive and driven members, the former including a disc and hub, a pair of weights with arcuate outer surfaces pivotally mounted at their adjacent one ends upon said disc and constrained to radial movements, a spring interconnecting their adjacent other ends in tension maintaining the weights in a radial inward ''''release'''' position, the driven member including a drum overlying and spaced from the disc and weights, and having a hub journalled on the disc hub, and a sleeve of friction material mounted upon and around the interior of said drum normally spaced from the weights. And a modified clutch wherein the weight pivots are diametrically opposed, and spring interconnect the respective opposite ends of the weights.
Inventors
- 👤 Warren H De Lancey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:23
CPC Classifications
F; F16; F16D; F16D43/00; F16D43/02; F16D43/04; F16D43/14; F16D43/18; F16D2043/145; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7009; Y10T403/7011
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
197 words
In a centrifugal clutch, a drive member including an apertured disc and central hub adapted to receive a drive means; a pair of parallel spaced pivot hubs on one side of the disc; a pair of oppositely arranged weights at their one ends pivoted on said hubs respectively; their outer working edges being arcuate; a spring interconnecting the other ends of the weights; stops on said hub limited inward ''''release'''' positioning of said weights; and a driven member including an apertured drum loosely surrounding and spaced from said disc and weights and a hub journalled upon said disc hub; means to prevent relative endwise movement of said hubs; coupling means on said drum hub; and a sleeve of friction material secured upon the interior of said drum normally spaced from said weights; said drum including a radial web, the means to prevent endwise relative movement of the hubs including an annular recess in the disc hub cooperatively receiving one end of the drum hub; said one end of the drum hub extending axially into said drum; and a washer secured upon the other end of said disc hub loosely engaging said drum hub at its other end.
Claim 2
Dependent Claim
197 words
In a centrifugal clutch, a drive member including an apertured disc and central hub adapted to receive a drive means; a pair of parallel spaced pivot hubs on one side of the disc; a pair of oppositely arranged weights at their one ends pivoted on said hubs respectively; their outer working edges being arcuate; a spring interconnecting the other ends of the weights; stops on said hub limited inward ''''release'''' positioning of said weights; and a driven member including an apertured drum loosely surrounding and spaced from said disc and weights and a hub journalled upon said disc hub; means to prevent relative endwise movement of said hubs; coupling means on said drum hub; and a sleeve of friction material secured upon the interior of said drum normally spaced from said weights; said drum including a radial web, the means to prevent endwise relative movement of the hubs including an annular recess in the disc hub cooperatively receiving one end of the drum hub; said one end of the drum hub extending axially into said drum; and a washer secured upon the other end of said disc hub loosely engaging said drum hub at its other end.
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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) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |