Patent US3098397A successfully refreshed from Google Patents.
US3098397A
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Tension control apparatus
Assignee: AO Smith Corp
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Filing: 1961-03-31
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Granted: 1963-07-23
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Expires: 1981-03-31
Abstract
No abstract record available.
Inventors
- 👤 John W Schaefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:52
CPC Classifications
F; F16; F16H; F16H7/00; F16H7/08; F16H7/10; F16H7/14; B; B65; B65G; B65G23/00; B65G23/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
A TENSION CONTROL FOR AN ENDLESS MEMBER, COMPRISING A HYDRAULIC UNIT HAVING A TUBULAR HOUSING MEMBER AND A PISTON MEMBER MOUNTED THEREIN, ONE OF SAID MEMBERS BEING GENERALLY IMMOVABLY MOUNTED AND THE OTHER OF SAID MEMBERS BEING MOVABLY MOUNTED IN ENGAGEMENT WITH SAID ENDLESS MEMBER, RESILENT MEANS COUPLED TO THE MOVABLE MEMBER TO CONTINUOUSLY PLACE THE ENDLESS MEMBER IN TENSION, SAID PISTON MEMBER DEFINING FORWARD AND REARWARD CHAMBERS WITHIN THE HOUSING MEMBER, A SUBSTANTIALLY INCOMPRESSIBLE LIQUID WITHIN SAID CHAMBERS, A PASSAGEWAY CONNECTING SAID CHAMBERS, VALVE MEANS IN THE PASSAGEWAY PERMITTING LIQUID FLOW BETWEEN THE CHAMBERS ONLY IN ONE DIRECTION, SAID DIRECTION PERMITTING THE MOVEMENT OF SAID MOVABLY MOUNTED MEMBER BY SAID RESILIENT MEANS TO MAINTAIN THE ENDLESS MEMBER IN TENSION, AND NORMALLY INOPERATIVE MEANS ACTUABLE TO OPERATIVELY DISENABLE SAID VALVE MEANS TO ALLOW OPPOSITE MOVEMENT OF THE MOVABLE MEMBER.
Claim 2
Dependent Claim
139 words
A TENSION CONTROL FOR AN ENDLESS MEMBER, COMPRISING A HYDRAULIC UNIT HAVING A TUBULAR HOUSING MEMBER AND A PISTON MEMBER MOUNTED THEREIN, ONE OF SAID MEMBERS BEING GENERALLY IMMOVABLY MOUNTED AND THE OTHER OF SAID MEMBERS BEING MOVABLY MOUNTED IN ENGAGEMENT WITH SAID ENDLESS MEMBER, RESILENT MEANS COUPLED TO THE MOVABLE MEMBER TO CONTINUOUSLY PLACE THE ENDLESS MEMBER IN TENSION, SAID PISTON MEMBER DEFINING FORWARD AND REARWARD CHAMBERS WITHIN THE HOUSING MEMBER, A SUBSTANTIALLY INCOMPRESSIBLE LIQUID WITHIN SAID CHAMBERS, A PASSAGEWAY CONNECTING SAID CHAMBERS, VALVE MEANS IN THE PASSAGEWAY PERMITTING LIQUID FLOW BETWEEN THE CHAMBERS ONLY IN ONE DIRECTION, SAID DIRECTION PERMITTING THE MOVEMENT OF SAID MOVABLY MOUNTED MEMBER BY SAID RESILIENT MEANS TO MAINTAIN THE ENDLESS MEMBER IN TENSION, AND NORMALLY INOPERATIVE MEANS ACTUABLE TO OPERATIVELY DISENABLE SAID VALVE MEANS TO ALLOW OPPOSITE MOVEMENT OF THE MOVABLE MEMBER.
References Cited (Backward Citations)
US1909372A
Cited
US2132721A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-22 | 1967-01-21 | 1967-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-22 | 1971-01-21 | 1971-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-22 | 1975-01-21 | 1975-07-23 | $7700.00 | Window Closed / Lapsed |