US3305920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston ring compressor
Assignee: Individual
•
Filing: 1965-02-03
•
Granted: 1967-02-28
•
Expires: 1985-02-03
Abstract
No abstract record available.
Inventors
- 👤 James P Massey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:11
CPC Classifications
B; B25; B25B; B25B27/00; B25B27/02; B25B27/12; Y; Y10; Y10T; Y10T24/00; Y10T24/14; Y10T24/1412; Y10T24/1416; Y10T29/00; Y10T29/53; Y10T29/536
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
A PISTON RING COMPRESSOR COMPRISING A FLEXIBLE BAND HAVING SEPARATED ENDS, THE BAND BEING ADAPTED TO SURROUND A PISTON AND HAVING PISTON RING ENGAGING FINGERS THEREON, A CASING DISPOSED EXTERIORLY OF THE BAND AND TO ONE SIDE OF WHICH THE BAND AT ONE END IS SECURED, THE CASING BEING FORMED WITH A SOCKET DEEPER THAN AND ALINED WITH THE BAND AND HAVING A FULL-DEPTH SLOT TO ONE SIDE OF AND IMMEDIATELY ADJACENT THE SECURED END OF THE BAND, A SPOOL IN THE SOCKET PARALLEL TO THE BAND, THE OTHER END OF THE BAND EXTENDING THROUGH THE SLOT AND INTO THE SOCKET AND BEING SECURED TO THE SPOOL FOR WRAPPING OF THE ADJACENT PORTION OF THE BAND THEREABOUT, MEANS TURNABLY MOUNTING THE SPOOL IN THE SOCKET, MEANS TO ROTATE THE SPOOL FROM EXTERIORLY OF THE CASING, AND MEANS PROVIDED WITH THE SPOOL MOUNTING MEANS TO CLAMP THE SPOOL AGAINST ROTATION.
Claim 2
Dependent Claim
149 words
A PISTON RING COMPRESSOR COMPRISING A FLEXIBLE BAND HAVING SEPARATED ENDS, THE BAND BEING ADAPTED TO SURROUND A PISTON AND HAVING PISTON RING ENGAGING FINGERS THEREON, A CASING DISPOSED EXTERIORLY OF THE BAND AND TO ONE SIDE OF WHICH THE BAND AT ONE END IS SECURED, THE CASING BEING FORMED WITH A SOCKET DEEPER THAN AND ALINED WITH THE BAND AND HAVING A FULL-DEPTH SLOT TO ONE SIDE OF AND IMMEDIATELY ADJACENT THE SECURED END OF THE BAND, A SPOOL IN THE SOCKET PARALLEL TO THE BAND, THE OTHER END OF THE BAND EXTENDING THROUGH THE SLOT AND INTO THE SOCKET AND BEING SECURED TO THE SPOOL FOR WRAPPING OF THE ADJACENT PORTION OF THE BAND THEREABOUT, MEANS TURNABLY MOUNTING THE SPOOL IN THE SOCKET, MEANS TO ROTATE THE SPOOL FROM EXTERIORLY OF THE CASING, AND MEANS PROVIDED WITH THE SPOOL MOUNTING MEANS TO CLAMP THE SPOOL AGAINST ROTATION.
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) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |