Patent US4464147A successfully refreshed from Google Patents.
US4464147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Belt tensioner and method of making the same
Assignee: Dayco Products LLC
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Filing: 1981-11-16
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Granted: 1984-08-07
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Expires: 2001-11-16
Abstract
Abstract A tensioner for a power transmission belt that is adapted to be operated in an endless path and a method of making the same are provided, the tensioner comprising a support unit for being fixed relative to the belt, a belt engaging unit carried by the support unit and being movable relative thereto, a movable cam unit operatively associated with the support unit and the belt engaging unit for moving the belt engaging unit relative to the support unit, and a spring unit operatively associated with the support unit and the cam unit for urging the belt engaging unit relative to the support unit and against the belt with a force to tension the belt, the support unit comprising a tubular member having an interconnecting part and the cam unit being disposed in the tubular member and having an interconnecting part operatively interconnected with the interconnecting part of the tubular member so that the cam unit is adapted to be axially movable relative to the tubular member while being non-rotatable relative to the tubular member.
Inventors
- 👤 Randy C. Foster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:51
CPC Classifications
F; F16; F16H; F16H7/00; F16H7/08; F16H7/10; F16H7/12; F16H7/1254; F16H7/1281; F16H7/129; F16H7/0848; F16H2007/0802; F16H2007/081; F16H2007/0853; F16H2007/0889; F16H2007/0893
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
173 words
In a tensioner for a power transmission belt that is adapted to be operated in an endless path, said tensioner comprising a support means for being fixed relative to said belt, a belt engaging means carried by said support means and being movable relative thereto, movable cam means operatively associated with said support means and said belt engaging means for moving said belt engaging means relative to said support means, and spring means operatively associated with said support means and said cam means for urging said belt engaging means relative to said support means and against said belt with a force to tension said belt, the improvement wherein said support means comprises a tubular member having interconnecting means, said cam means being disposed in said tubular member, said cam means having interconnecting means operatively interconnected with said interconnecting means of said tubular member, both said interconnecting means cooperating and being adapted to permit said cam means to be axially movable relative to said tubular member while being non-rotatable relative to said tubular member.
Claim 2
Dependent Claim
173 words
In a tensioner for a power transmission belt that is adapted to be operated in an endless path, said tensioner comprising a support means for being fixed relative to said belt, a belt engaging means carried by said support means and being movable relative thereto, movable cam means operatively associated with said support means and said belt engaging means for moving said belt engaging means relative to said support means, and spring means operatively associated with said support means and said cam means for urging said belt engaging means relative to said support means and against said belt with a force to tension said belt, the improvement wherein said support means comprises a tubular member having interconnecting means, said cam means being disposed in said tubular member, said cam means having interconnecting means operatively interconnected with said interconnecting means of said tubular member, both said interconnecting means cooperating and being adapted to permit said cam means to be axially movable relative to said tubular member while being non-rotatable relative to said tubular member.
Claim 3
Dependent Claim
18 words
A tensioner as set forth in claim 1 wherein said spring means is disposed in said tubular member.
Claim 4
Dependent Claim
42 words
A tensioner as set forth in claim 2 wherein said spring means comprises a mechanical spring means and bears against said support means and said cam means to tend to move said cam means in one axial direction in said tubular member.
Claim 5
Dependent Claim
22 words
A tensioner as set forth in claim 1 wherein said belt engaging means has cam follower means engaged by said cam means.
Claim 6
Dependent Claim
19 words
A tensioner as set forth in claim 4 wherein said cam follower means is disposed in said tubular member.
Claim 7
Dependent Claim
31 words
A tensioner as set forth in claim 5 wherein said belt engaging means comprises a shaft rotatably carried by said support means, said cam follower means being carried by said shaft.
Claim 8
Dependent Claim
45 words
A tensioner as set forth in claim 6 wherein said belt engaging means comprises an arm carried by said shaft and extending substantially transverse to the axis of rotation of said shaft, and an idler pulley means carried by said arm for engaging said belt.
Claim 9
Dependent Claim
20 words
A tensioner as set forth in claim 7 wherein said shaft has a portion thereof disposed in said tubular member.
Claim 10
Dependent Claim
24 words
A tensioner as set forth in claim 8 wherein said cam means has an opening therethrough which telescopically receives said portion of said shaft.
Claim 11
Dependent Claim
56 words
A tensioner as set forth in claim 9 wherein said spring means comprises a coiled compression spring having opposed ends, said spring being telescopically disposed on said portion of said shaft, said spring having one of said ends thereof bearing against said cam means and having the other of said ends bearing against said tubular member.
Claim 12
Dependent Claim
29 words
A tensioner as set forth in claim 10 wherein said interconnecting means of said tubular member comprises spline means, said interconnecting means of said cam means comprising groove means.
Claim 13
Dependent Claim
43 words
A tensioner as set forth in claim 10 wherein said cam follower means comprises a plurality of rollers rotatably carried by said shaft, each said roller having an axis of rotation that is substantially transverse to the axis of rotation of said shaft.
References Cited (Backward Citations)
US1670914A
Cited
US1815954A
Cited
US2985270A
Cited
GB1013701A
Cited
US4270906A
Cited
US4300890A
Cited
GB2090938A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-08-07 | 1988-02-06 | 1988-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-07 | 1992-02-06 | 1992-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-07 | 1996-02-06 | 1996-08-07 | $7700.00 | Window Closed / Lapsed |