US4366609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite pulley and method for making
Assignee: Dayco Products LLC
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Filing: 1981-01-19
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Granted: 1983-01-04
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Expires: 2001-01-19
Abstract
Abstract A novel composite pulley construction is provided, which comprises a continuous, metal peripheral belt supporting and bearing surface, and a plastic body. Also provided is a novel method for making a composite pulley.
Inventors
- 👤 Billy L. Speer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:19
CPC Classifications
F; F16; F16H; F16H55/00; F16H55/32; F16H55/36; F16H55/48; B; B29; B29C; B29C45/00; B29C45/14; B29C45/1418; B29C45/14467; B29C45/14491; B29K; B29K2705/00; B29L; B29L2031/00; B29L2031/32; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49453; Y10T29/4946
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
168 words
A method for manufacturing a composite pulley construction for use with at least one endless power transmission belt, said pulley construction comprising means for mounting said pulley for rotation, an outer peripheral metal surface for receiving and supporting said belt, and a molded plastic sheave supported by said mounting means and supporting said metal surface which comprises the steps of: (a) providing a mold means having a pulley-shaping cavity having a circumferential portion of desired configuration for forming said belt receiving and support surface; (b) disposing said mounting means within said cavity; (c) disposing a cylindrical metal sleeve within said cavity; (d) closing said cavity; (e) injecting a plastic material into said cavity between said mounting means and said metal sleeve under pressure; (f) forcing said plastic material under said pressure against said cylindrical metal sleeve; (g) deforming said cylindrical metal sleeve under pressure of said material to conform to said configuration of said circumferential portion; and (h) forming said receiving and supporting surface of said deformed sleeve.
Claim 2
Independent Claim
168 words
A method for manufacturing a composite pulley construction for use with at least one endless power transmission belt, said pulley construction comprising means for mounting said pulley for rotation, an outer peripheral metal surface for receiving and supporting said belt, and a molded plastic sheave supported by said mounting means and supporting said metal surface which comprises the steps of: (a) providing a mold means having a pulley-shaping cavity having a circumferential portion of desired configuration for forming said belt receiving and support surface; (b) disposing said mounting means within said cavity; (c) disposing a cylindrical metal sleeve within said cavity; (d) closing said cavity; (e) injecting a plastic material into said cavity between said mounting means and said metal sleeve under pressure; (f) forcing said plastic material under said pressure against said cylindrical metal sleeve; (g) deforming said cylindrical metal sleeve under pressure of said material to conform to said configuration of said circumferential portion; and (h) forming said receiving and supporting surface of said deformed sleeve.
Claim 3
Dependent Claim
27 words
The method of claim 1 wherein said providing step (a) comprises providing a mold means having a circumferential portion comprising at least one circumferential truncated V shape.
Claim 4
Dependent Claim
29 words
The method of claim 1 wherein said providing step (a) comprises providing a mold means having a circumferential portion comprising a plurality of alternating circumferential V-shaped projections and recesses.
Claim 5
Dependent Claim
29 words
The method of claim 1 wherein said providing step (a) comprises providing a mold means having a circumferential portion comprising a plurality of accurately spaced transverse projections and recesses.
Claim 6
Dependent Claim
25 words
The method of claim 1 wherein said disposing step (b) comprises disposing a cup-shaped mounting hub, having a plurality of mounting holes, within said cavity.
Claim 7
Dependent Claim
20 words
The method of claim 1 wherein said disposing step (b) comprises disposing a plurality of mounting inserts within said cavity.
Claim 8
Dependent Claim
30 words
The method of claim 1 wherein said disposing step (c) comprises disposing a metal sleeve having a thickness in the approximate range of 0.010 to 0.050 inch within said cavity.
Claim 9
Dependent Claim
10 words
The method of claim 7 wherein said sleeve is aluminum.
Claim 10
Dependent Claim
11 words
The method of claim 7 wherein said sleeve is mild steel.
Claim 11
Dependent Claim
26 words
The method of claim 1 wherein said plastic material is injected into said cavity under a pressure in the approximate range of 500 to 30,000 psi.
Claim 12
Dependent Claim
27 words
The method of claim 1 further comprising the intermediate step of roughening the inner surface of said metal sleeve prior to disposing the same in said cavity.
Claim 13
Dependent Claim
30 words
The method of claim 1 further comprising the intermediate step of applying an adhesive to the inner surface of said metal sleeve prior to disposing the same in said cavity.
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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) | 1986-01-03 | 1986-07-05 | 1987-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-03 | 1990-07-05 | 1991-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-03 | 1994-07-05 | 1995-01-04 | $7700.00 | Window Closed / Lapsed |