Patent US3142193A successfully refreshed from Google Patents.
US3142193A
Expired / Lapsed
US
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Belt tensioning device
Assignee: International Motors LLC
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Filing: 1961-11-20
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Granted: 1964-07-28
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Expires: 1981-11-20
Abstract
No abstract record available.
Inventors
- 👤 Peter P Polko
- 👤 Lauri J Kivisto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:48
CPC Classifications
F; F16; F16H; F16H7/00; F16H7/08; F16H7/10; F16H7/12; F16H7/1254; F16H7/1281; F16H2007/0802; F16H2007/0808; F16H2007/0812
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A DUAL FORCE BELT TENSIONING DEVICE FOR A BELT ENTRAINED ABOUT DRIVING AND DRIVEN PARTS, AND INCLUDING: A HYDRAULIC UNIT FOR APPLYING CONSTANT HYDRAULIC OPERATING FORCE IN THE PLANE OF THE UNIT AND SECURED AT A POINT TO SUPPORTING MEANS FOR THE UNIT; A BRACKET HAVING A PROJECTING FIXED ARM PASSING ADJACENT THE OPERATING END OF THE HYDRAULIC UNIT; A HYDRAULICALLY OPERATED BELLCRANK PIVOTED TO THE PROJECTING END OF THE FIXED ARM AND PRESENTING FIRST AND SECOND BELLCRANK ARMS; SPRING MEANS SUBSTANTIALLY IN THE PLANE OF THE HYDRAULIC UNIT AND CONNECTED TO BIAS THE BELLCRANK IN A FORCE ASSISTING RELATION TO THE FORCE OF THE HYDRAULIC UNIT; AND A BELT TENSIONING PULLEY CONNECTED TO THE SECOND BELLCRANK ARM IN A POSITION FOR EFFECTING CON-
Claim 2
Dependent Claim
124 words
A DUAL FORCE BELT TENSIONING DEVICE FOR A BELT ENTRAINED ABOUT DRIVING AND DRIVEN PARTS, AND INCLUDING: A HYDRAULIC UNIT FOR APPLYING CONSTANT HYDRAULIC OPERATING FORCE IN THE PLANE OF THE UNIT AND SECURED AT A POINT TO SUPPORTING MEANS FOR THE UNIT; A BRACKET HAVING A PROJECTING FIXED ARM PASSING ADJACENT THE OPERATING END OF THE HYDRAULIC UNIT; A HYDRAULICALLY OPERATED BELLCRANK PIVOTED TO THE PROJECTING END OF THE FIXED ARM AND PRESENTING FIRST AND SECOND BELLCRANK ARMS; SPRING MEANS SUBSTANTIALLY IN THE PLANE OF THE HYDRAULIC UNIT AND CONNECTED TO BIAS THE BELLCRANK IN A FORCE ASSISTING RELATION TO THE FORCE OF THE HYDRAULIC UNIT; AND A BELT TENSIONING PULLEY CONNECTED TO THE SECOND BELLCRANK ARM IN A POSITION FOR EFFECTING CON-
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-28 | 1968-01-27 | 1968-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-28 | 1972-01-27 | 1972-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-28 | 1976-01-27 | 1976-07-28 | $7700.00 | Window Closed / Lapsed |