US3682010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulley construction
Assignee: White Consolidated Industries Inc
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Filing: 1970-04-29
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Granted: 1972-08-08
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Expires: 1990-04-29
Abstract
Abstract A pulley for use in a belt drive assembly. The outer surface of the pulley is divided into high friction portions which are in frictional engagement with the belt and low friction portions where the belt has little or no driving engagement with the pulley. The effective or belt-engaging areas of the high and low friction portions are proportioned to obtain a driving relationship with the belt under normal load conditions but to slip under overload conditions.
Inventors
- 👤 Joseph F Brooks
- 👤 Harold W Schaefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:33
CPC Classifications
F; F16; F16H; F16H55/00; F16H55/32; F16H55/36; A; A47; A47L; A47L5/00; A47L5/12; A47L5/22; A47L5/28; A47L5/30
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
97 words
A clutch pulley for use in a drive assembly including a belt and a cooperating pulley, said clutch pulley comprising a generally circular main body including a plurality of relatively high friction means on the outer surface thereof, said high friction means being circumferentially spaced around the periphery of said main body and being adapted to be engaged by said belt, and a plurality of members rotatably mounted on said main body and adapted to be engaged by said belt, one of said members being located in each of the spaces between said spaced high friction means.
Claim 2
Dependent Claim
97 words
A clutch pulley for use in a drive assembly including a belt and a cooperating pulley, said clutch pulley comprising a generally circular main body including a plurality of relatively high friction means on the outer surface thereof, said high friction means being circumferentially spaced around the periphery of said main body and being adapted to be engaged by said belt, and a plurality of members rotatably mounted on said main body and adapted to be engaged by said belt, one of said members being located in each of the spaces between said spaced high friction means.
Claim 3
Dependent Claim
22 words
A clutch pulley as in claim 1, wherein said high friction means comprises circumferentially spaced outer surface portions of said main body.
Claim 4
Dependent Claim
30 words
A clutch pulley as in claim 1, wherein a plurality of cavities are formed in said main body between said high friction means, said members being mounted in said cavities.
Claim 5
Dependent Claim
21 words
A clutch pulley as in claim 1, wherein each of said members comprises a roller rotatable mounted on said main body.
Claim 6
Dependent Claim
20 words
A clutch pulley as in claim 4, wherein said rollers and said high friction means have generally similar outer contours.
Claim 7
Dependent Claim
18 words
A clutch pulley as in claim 5, wherein said rollers and said high friction means have crowned contours.
Claim 8
Dependent Claim
43 words
A clutch pulley as in claim 1, wherein said high friction means comprises circumferentially spaced outer surface portions of said main body, and said outer surface portions are separated by cavities formed in said main body, said members being mounted in said cavities.
Claim 9
Dependent Claim
98 words
A clutch pulley for use in a drive assembly including a belt and a cooperating pulley, said clutch pulley comprising a generally circular main body, high friction means on the outer periphery of said body, said high friction means including a plurality of circumferentially spaced portions, and low friction means on the outer surface of said main body, said low friction means including a plurality of members rotatably mounted in the spaces between said circumferentially spaced portions, said high and said low friction means having similar outer contours and both being adapted to be engaged by said belt.
Claim 10
Dependent Claim
98 words
A clutch pulley for use in a drive assembly including a belt and a cooperating pulley, said clutch pulley comprising a generally circular main body, high friction means on the outer periphery of said body, said high friction means including a plurality of circumferentially spaced portions, and low friction means on the outer surface of said main body, said low friction means including a plurality of members rotatably mounted in the spaces between said circumferentially spaced portions, said high and said low friction means having similar outer contours and both being adapted to be engaged by said belt.
Claim 11
Dependent Claim
55 words
A clutch pulley as in claim 8, wherein the total area of said high friction means is proportioned relative to the total area of said low friction means to obtain sufficient tractive effort for the belt to drive said clutch pulley under normal load conditions but to enable said belt to slip under overload conditions.
Claim 12
Dependent Claim
94 words
A clutch pulley comprising a generally circular main body, a plurality of circumferentially spaced arcuate cavities formed in of said body, the axes of said cavities extending generally parallel to and being radially spaced from the axis of said main body, and a plurality of rollers, one of said rollers being rotatably mounted in each of said cavities, the outer surface portions of said body between said cavities forming high friction portions and said rollers forming low friction portions, and the outer contours of said outer surface portions and said rollers being generally similar.
Claim 13
Dependent Claim
94 words
A clutch pulley comprising a generally circular main body, a plurality of circumferentially spaced arcuate cavities formed in of said body, the axes of said cavities extending generally parallel to and being radially spaced from the axis of said main body, and a plurality of rollers, one of said rollers being rotatably mounted in each of said cavities, the outer surface portions of said body between said cavities forming high friction portions and said rollers forming low friction portions, and the outer contours of said outer surface portions and said rollers being generally similar.
Claim 14
Dependent Claim
21 words
A clutch pulley as in claim 10, wherein each of said rollers is rotatably supported on said body by a pin.
Claim 15
Dependent Claim
64 words
A clutch pulley as in claim 10 wherein said main body includes a pair of sections and means for securing said sections together, said sections being separable along a generally radially extending plane, one end of each of said rollers being supported by one of said sections and the other end of each of said rollers being supported by the other of said sections.
References Cited (Backward Citations)
US468843A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |