US3922927A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tensioner for a belt transmission
Assignee: Toyota Motor Corp
•
Filing: 1974-08-16
•
Granted: 1975-12-02
•
Expires: 1994-08-16
Abstract
Abstract A tensioner for a belt transmission supporting an accessory which is adjunct to an automotive engine and is equipped with a driven pulley, in such a manner as to be swingable and shiftable in position. The angle of shifting in position is adjustable by means of an adjusting bolt engaged with a threaded hole part, and the belt tension on the adjusting bolt is borne by a tensionbearing wall in contact with the adjusting bolt at right angles to each other.
Inventors
- 👤 Kazuhiro Shiki
- 👤 Masaru Hibino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:47
CPC Classifications
F; F16; F16H; F16H7/00; F16H7/08; F16H7/10; F16H7/14; F02; F02B; F02B67/00; F02B67/04; F02B67/06; F02B2275/00; F02B2275/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
170 words
A tensioner for a belt transmission supporting an accessory which is adjunct to the engine of an automobile and equipped with a driven pulley connected via belting to a drive pulley of the engine, at a fulcrum spaced from the rotational center of the driven pulley, in such a manner that the accessory can be swung and shifted in angular position relative to the fulcrum, the tensioner comprising: a threaded hole part secured to said accessory; an adjusting bolt in threadable engagement with said hole part and projecting beyond the latter; a tension-bearing wall adapted to receive the projecting end of said adjusting bolt in contact at substantially right angles thereto so as to bear the tension of the belt transmitted through said adjusting bolt; an adjusting plate formed with a slot arcuately shaped relative to said fulcrum for swinging movement of said accessory; and a bolt extended across the slot for threadable engagement with a threaded hole in said accessory and for fastening said accessory to said adjusting plate.
Claim 2
Dependent Claim
170 words
A tensioner for a belt transmission supporting an accessory which is adjunct to the engine of an automobile and equipped with a driven pulley connected via belting to a drive pulley of the engine, at a fulcrum spaced from the rotational center of the driven pulley, in such a manner that the accessory can be swung and shifted in angular position relative to the fulcrum, the tensioner comprising: a threaded hole part secured to said accessory; an adjusting bolt in threadable engagement with said hole part and projecting beyond the latter; a tension-bearing wall adapted to receive the projecting end of said adjusting bolt in contact at substantially right angles thereto so as to bear the tension of the belt transmitted through said adjusting bolt; an adjusting plate formed with a slot arcuately shaped relative to said fulcrum for swinging movement of said accessory; and a bolt extended across the slot for threadable engagement with a threaded hole in said accessory and for fastening said accessory to said adjusting plate.
Claim 3
Dependent Claim
22 words
A tensioner according to claim 1 wherein the threaded hole part is in the form of a nut welded to the accessory.
Claim 4
Dependent Claim
25 words
A tensioner according to claim 1 wherein the threaded hole part is provided in a bolt shank bearing which is formed integrally with the accessory.
Claim 5
Dependent Claim
18 words
A tensioner according to claim 1 wherein the tension-bearing wall and the adjusting plate are integrally fabricated together.
Claim 6
Dependent Claim
43 words
A tensioner according to claim 1 wherein the tension-bearing wall has a curved surface such that when said adjusting bolt is swung and shifted together with said accessory, said adjusting bolt remains in contact with said curved surface at substantially right angles thereto.
References Cited (Backward Citations)
US2876645A
Cited
US3018667A
Cited
US3187674A
Cited
US3175574A
Cited
US3306121A
Cited
US3430507A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |