US3123899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Townhill
Assignee: —
•
Filing: —
•
Granted: 1964-03-10
•
Expires: 1981-03-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:24
CPC Classifications
B; B21; B21K; B21K1/00; B21K1/18; F; F16; F16J; F16J1/00; F16J1/001; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49249; Y10T29/49256; Y10T29/4981
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A METHOD OF FORMING A PISTON WITH A CONTROL RING IN THE SKIRT PORTION THEREOF, WHICH COMPRISES FORMING A SLUG WITH A REDUCED DIAMETER END PORTION AND SHOULDER PORTION CONNECTING THEREWITH, FORMING AN AXIALLY EXTENDING SLOT IN THE END PORTION OF THE SLUG, LOCATING A CONTROL RING HAVING A WASHER MEMBER THEREON IN CLOSE SURROUNDING RELATION WITH SAID END PORTION AND IN ABUTMENT WITH THE SHOULDER PORTION WITH THE WASHER MEMBER SEATED IN THE AXIAL SLOT, MOVING A PUNCH MEMBER RELATIVE TO A DIE MEMBER CONTAINING THE SLUG TO MOVE THE METAL MASS OF SAID SLUG AXIALLY AND RADIALLY TO FORM THE PISTON HEAD AND SKIRT PORTIONS AND ESSENTIALLY SURROUND THE CONTROL RING WITH THE METAL MASS FORMING SAID SKIRT PORTION, AND REMOVING THE WASHER MEMBER FROM THE METAL MASS AND FROM THE CONTROL RING.
Claim 2
Independent Claim
135 words
A METHOD OF FORMING A PISTON WITH A CONTROL RING IN THE SKIRT PORTION THEREOF, WHICH COMPRISES FORMING A SLUG WITH A REDUCED DIAMETER END PORTION AND SHOULDER PORTION CONNECTING THEREWITH, FORMING AN AXIALLY EXTENDING SLOT IN THE END PORTION OF THE SLUG, LOCATING A CONTROL RING HAVING A WASHER MEMBER THEREON IN CLOSE SURROUNDING RELATION WITH SAID END PORTION AND IN ABUTMENT WITH THE SHOULDER PORTION WITH THE WASHER MEMBER SEATED IN THE AXIAL SLOT, MOVING A PUNCH MEMBER RELATIVE TO A DIE MEMBER CONTAINING THE SLUG TO MOVE THE METAL MASS OF SAID SLUG AXIALLY AND RADIALLY TO FORM THE PISTON HEAD AND SKIRT PORTIONS AND ESSENTIALLY SURROUND THE CONTROL RING WITH THE METAL MASS FORMING SAID SKIRT PORTION, AND REMOVING THE WASHER MEMBER FROM THE METAL MASS AND FROM THE CONTROL RING.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-10 | 1967-09-09 | 1968-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-10 | 1971-09-09 | 1972-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-10 | 1975-09-09 | 1976-03-10 | $7700.00 | Window Closed / Lapsed |