US3561091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for compressing piston rings and installing pistons in cylinder bores
Assignee: Individual
•
Filing: 1968-04-19
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Granted: 1971-02-09
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Expires: 1988-04-19
Abstract
Abstract A SYSTEM OF COMPRESSING PISTON RING ON A PISTON BY PASSING A SLEEVE MEMBER WITH A TAPERED BORE OVER THE RINGS TO GRADUALLY COMPRESS THE SAME. THE SLEEVE FEEDS THE PISTON AND THE COMPRESSED RINGS TO A SECOND SLEEVE WITH A GENERALLY CYLINDRICAL BORE WHICH MAINTAINS THE RINGS IN A COMPRESSED STATE. THIS LATTER SLEEVE, WITH THE PISTON THEREIN IS THEN PLACED OVER THE BORE IN A CYLINDER AND THE PISTON FORCED OUT OF THE SLEEVE AND INTO THE CYLINDER.
Inventors
- 👤 Leo Pigozzi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:39
CPC Classifications
B; B25; B25B; B25B27/00; B25B27/02; B25B27/12; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/536; Y10T29/53904; Y10T29/53991
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |