Patent US3075675A successfully refreshed from Google Patents.
US3075675A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston arrangement for dispensing partially compressible plastic materials
Assignee: Gibson-Homans Co
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Filing: 1957-11-29
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Granted: 1963-01-29
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Expires: 1977-11-29
Abstract
No abstract record available.
Inventors
- 👤 Eric S Wormser
- 👤 Robert W Ankney
- 👤 Alfred A Hurschman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:37
CPC Classifications
B; B05; B05C; B05C17/00; B05C17/005; B05C17/00576; B05C17/00579
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A PISTON FOR DISPENSING PARTIALLY COMPRESSIBLE PLASTIC MATERIAL FROM AN ELONGATED HOLLOW TUBE, SAID PISTON COMPRISING A RIGID SKIRT HAVING AN ANNULAR OUTER SKIRT PORTION SHAPED AND DIMENSIONED TO SLIDINGLY AND SEALINGLY ENGAGE THE INSIDE OF SAID TUBE AND HAVING AN INNER AXIALLY EXTENDING FLANGE CONNECTED INTEGRALLY WITH SAID OUTER SKIRT PORTION AND DISPOSED RADIALLY INWARD THEREFROM AND DEFINING AN AXIALLY EXTENDING OPENING, AND A HEAD FORMED OF THIN, FLEXIBLE, RESILIENT MATERIAL EXTENDING TRANSVERSELY ACROSS SAID SKIRT, SAID HEAD HAVING AN AXIALLY PROJECTING ANNULAR MOUNTING PORTION WHICH IS RECEIVED IN SAID AXIALLY EXTENDING OPENING IN SAID FLANGE, SAID MOUNTING PORTION OF THE HEAD AT ITS FREE END HAVING A RADIALLY OUTWARDLY PROJECTING PORTION WHICH PROJECTS RADIALLY OUTWARD ACROSS ONE END OF SAID FLANGE IN ENGAGEMENT THEREWITH AND BEING
Claim 2
Dependent Claim
128 words
A PISTON FOR DISPENSING PARTIALLY COMPRESSIBLE PLASTIC MATERIAL FROM AN ELONGATED HOLLOW TUBE, SAID PISTON COMPRISING A RIGID SKIRT HAVING AN ANNULAR OUTER SKIRT PORTION SHAPED AND DIMENSIONED TO SLIDINGLY AND SEALINGLY ENGAGE THE INSIDE OF SAID TUBE AND HAVING AN INNER AXIALLY EXTENDING FLANGE CONNECTED INTEGRALLY WITH SAID OUTER SKIRT PORTION AND DISPOSED RADIALLY INWARD THEREFROM AND DEFINING AN AXIALLY EXTENDING OPENING, AND A HEAD FORMED OF THIN, FLEXIBLE, RESILIENT MATERIAL EXTENDING TRANSVERSELY ACROSS SAID SKIRT, SAID HEAD HAVING AN AXIALLY PROJECTING ANNULAR MOUNTING PORTION WHICH IS RECEIVED IN SAID AXIALLY EXTENDING OPENING IN SAID FLANGE, SAID MOUNTING PORTION OF THE HEAD AT ITS FREE END HAVING A RADIALLY OUTWARDLY PROJECTING PORTION WHICH PROJECTS RADIALLY OUTWARD ACROSS ONE END OF SAID FLANGE IN ENGAGEMENT THEREWITH AND BEING
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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) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |