US3097003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic tightening device
Assignee: Library and Archives Canada
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Filing: 1962-04-16
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Granted: 1963-07-09
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Expires: 1982-04-16
Abstract
No abstract record available.
Inventors
- 👤 Deve Vagn
- 👤 Miloradovitch Leonid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:39
CPC Classifications
F; F16; F16D; F16D1/00; F16D1/06; B; B25; B25B; B25B29/00; B25B29/02; F04; F04D; F04D29/00; F04D29/18; F04D29/20; F16B; F16B31/00; F16B31/04; F16B31/043; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53796; Y10T29/5383; Y10T403/00; Y10T403/16; Y10T403/1633; Y10T403/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
IN A DEVICE OF THE CHARACTER DESCRIBED, A SHAFT, A MEMBER HAVING A BORE WITH SAID SHAFT EXTENDING THROUGH SAID BORE, SAID SHAFT AND MEMBER HAVING OPPOSED CONGRUENT SURFACES, SAID FIRST MEANS FOR URGING SAID SURFACES INTO ABUTTING ENGAGEMENT, SAID FIRST MEANS COMPRISING A HOLLOW CYLINDER SLIDABLE ON SAID SHAFT, A PISTON MOUNTED ON SAID SHAFT AND SLIDABLE IN SAID CYLINDER AND SECOND MEANS FOR TRANSMITTING AXIAL THRUST FROM SAID PISTON TO SAID SHAFT IN ONE DIRECTION, SAID SECOND MEANS COMPRISING A CIRCUMFERENTIAL GROOVE IN SAID SHAFT, A FACE ON SAID PISTON AND KEY MEANS IN SAID GROOVE, AND MEANS WHEREBY
Claim 2
Dependent Claim
101 words
IN A DEVICE OF THE CHARACTER DESCRIBED, A SHAFT, A MEMBER HAVING A BORE WITH SAID SHAFT EXTENDING THROUGH SAID BORE, SAID SHAFT AND MEMBER HAVING OPPOSED CONGRUENT SURFACES, SAID FIRST MEANS FOR URGING SAID SURFACES INTO ABUTTING ENGAGEMENT, SAID FIRST MEANS COMPRISING A HOLLOW CYLINDER SLIDABLE ON SAID SHAFT, A PISTON MOUNTED ON SAID SHAFT AND SLIDABLE IN SAID CYLINDER AND SECOND MEANS FOR TRANSMITTING AXIAL THRUST FROM SAID PISTON TO SAID SHAFT IN ONE DIRECTION, SAID SECOND MEANS COMPRISING A CIRCUMFERENTIAL GROOVE IN SAID SHAFT, A FACE ON SAID PISTON AND KEY MEANS IN SAID GROOVE, AND MEANS WHEREBY
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) | 1966-07-08 | 1967-01-07 | 1967-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-08 | 1971-01-07 | 1971-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-08 | 1975-01-07 | 1975-07-09 | $7700.00 | Window Closed / Lapsed |