Patent US3221937A successfully refreshed from Google Patents.
US3221937A
Expired / Lapsed
US
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Cement extruding mechanism
Assignee: Individual
•
Filing: 1963-06-03
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Granted: 1965-12-07
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Expires: 1983-06-03
Abstract
No abstract record available.
Inventors
- 👤 Jacob S Kamborian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:04
CPC Classifications
E; E04; E04F; E04F21/00; E04F21/02; E04F21/06; E04F21/08; E04F21/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
198 words
A CEMENT EXTRUDING MECHANISM COMPRISING: A CEMENT POT ADAPED TO CONTAIN A QUANTITY OF CEMENT; A GUN; A BARREL ON THE GUN; AN ORIFICE IN THE BARREL HAVING A VALVE SEAT THEREON; A COPNDUIT INTERCONNECTING THE CEMENT POT AND ORIFICE; PRESSURE APPLYING MEANS OPERABLE WHEN ACTUATED TO FORCE CEMENT FROM THE CEMENT POT THROUGH THE CONDUIT INTO THE ORIFICE; A VALVE IN THE ORIFICE HAVING A VALVE HEAD AND A VALVE STEM EXTENDING AWAY FROM THE VALVE HEAD, SAID VALVE HAVING A FIRST POSITION WHEREIN THE HEAD IS SEATED AGAINST THE SEAT TO BLOCK THE ORIFICE AND A SECOND POSITION WHEREIN THE HEAD IS AWAY FROM THE SEAT TO PERMIT THE FLOW OF CEMENT THROUGH THE ORIFICE; MEANS MOUNTING THE VALVE FOR MOVEMENT FROM EACH OF SAID POSITIONS TO THE OTHER OF SAID POSITIONS; A LINK MOVABLY MOUNTED IN THE GUN AND CONNECTED TO THE VALVE STEAM SO THAT MOVEMENT OF THE LINK IN A FIRST DIRECTION CAUSES MOVEMENT OF THE VALVE FROM THE FIRST POSITION TO THE SECOND POSITION AND MOVEMENT OF THE LINK IN A SECOND DIRECTION CAUSES MOVEMENT OF THE VALVE FROM THE SECOND POSITION TO THE FIRST POSITION; A CONTROL MEMBER MOUNTED IN THE
Claim 2
Dependent Claim
198 words
A CEMENT EXTRUDING MECHANISM COMPRISING: A CEMENT POT ADAPED TO CONTAIN A QUANTITY OF CEMENT; A GUN; A BARREL ON THE GUN; AN ORIFICE IN THE BARREL HAVING A VALVE SEAT THEREON; A COPNDUIT INTERCONNECTING THE CEMENT POT AND ORIFICE; PRESSURE APPLYING MEANS OPERABLE WHEN ACTUATED TO FORCE CEMENT FROM THE CEMENT POT THROUGH THE CONDUIT INTO THE ORIFICE; A VALVE IN THE ORIFICE HAVING A VALVE HEAD AND A VALVE STEM EXTENDING AWAY FROM THE VALVE HEAD, SAID VALVE HAVING A FIRST POSITION WHEREIN THE HEAD IS SEATED AGAINST THE SEAT TO BLOCK THE ORIFICE AND A SECOND POSITION WHEREIN THE HEAD IS AWAY FROM THE SEAT TO PERMIT THE FLOW OF CEMENT THROUGH THE ORIFICE; MEANS MOUNTING THE VALVE FOR MOVEMENT FROM EACH OF SAID POSITIONS TO THE OTHER OF SAID POSITIONS; A LINK MOVABLY MOUNTED IN THE GUN AND CONNECTED TO THE VALVE STEAM SO THAT MOVEMENT OF THE LINK IN A FIRST DIRECTION CAUSES MOVEMENT OF THE VALVE FROM THE FIRST POSITION TO THE SECOND POSITION AND MOVEMENT OF THE LINK IN A SECOND DIRECTION CAUSES MOVEMENT OF THE VALVE FROM THE SECOND POSITION TO THE FIRST POSITION; A CONTROL MEMBER MOUNTED IN THE
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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) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |