US3137060A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston pulling device
Assignee: ROBERT W MACY II
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Filing: 1962-10-24
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Granted: 1964-06-16
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Expires: 1982-10-24
Abstract
No abstract record available.
Inventors
- 👤 Iii Joseph F Granzer
- 👤 Ii Robert W Macy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:37
CPC Classifications
B; B25; B25B; B25B27/00; B25B27/02; B25B27/026; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49249; Y10T29/4925; Y10T29/49815; Y10T29/49822; Y10T29/53; Y10T29/53796; Y10T29/5383
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A PISTON PULLING DEVICE FOR REMOVING A PISTON FROM A CYLINDER OF A CYLINDER BLOCK COMPRISING A SLEEVE HAVING A DIAMETER SUFFICIENTLY LARGER THAN THE DIAMETER OF THE CYLINDER SO THAT ONE END OF THE SLEEVE MAY REST ON THE CYLINDER BLOCK ABOUT THE CYLINDER FROM WHICH THE PISTON IS TO BE REMOVED, A COVER CLOSING THE OTHER END OF SAID SLEEVE, AND MEANS THROUGH WHICH A VACUUM MAY BE CREATED AND MAY BE RELIEVED WITHIN THE SLEEVE ABOVE THE PISTON, WHEREBY CREATING THE VACUUM IN THE SLEEVE WILL LIFT THE PISTON IN THE CYLINDER AT LEAST PARTIALLY INTO SAID SLEEVE, AND RECEIVING THE VACUUM WILL PERMIT THE SLEEVE TO BE REMOVED FROM THE CYLINDER BLOCK TO ALLOW ACCESS TO THE LIFTED PISTON EXTENDING AT LEAST PARTIALLY ABOVE THE CYLINDER BLOCK
Claim 2
Dependent Claim
131 words
A PISTON PULLING DEVICE FOR REMOVING A PISTON FROM A CYLINDER OF A CYLINDER BLOCK COMPRISING A SLEEVE HAVING A DIAMETER SUFFICIENTLY LARGER THAN THE DIAMETER OF THE CYLINDER SO THAT ONE END OF THE SLEEVE MAY REST ON THE CYLINDER BLOCK ABOUT THE CYLINDER FROM WHICH THE PISTON IS TO BE REMOVED, A COVER CLOSING THE OTHER END OF SAID SLEEVE, AND MEANS THROUGH WHICH A VACUUM MAY BE CREATED AND MAY BE RELIEVED WITHIN THE SLEEVE ABOVE THE PISTON, WHEREBY CREATING THE VACUUM IN THE SLEEVE WILL LIFT THE PISTON IN THE CYLINDER AT LEAST PARTIALLY INTO SAID SLEEVE, AND RECEIVING THE VACUUM WILL PERMIT THE SLEEVE TO BE REMOVED FROM THE CYLINDER BLOCK TO ALLOW ACCESS TO THE LIFTED PISTON EXTENDING AT LEAST PARTIALLY ABOVE THE CYLINDER BLOCK
References Cited (Backward Citations)
US2101996A
Cited
US2799318A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-16 | 1967-12-16 | 1968-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-16 | 1971-12-16 | 1972-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-16 | 1975-12-16 | 1976-06-16 | $7700.00 | Window Closed / Lapsed |