US3237571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dispenser
Assignee: Silgan Dispensing Systems Corp
•
Filing: 1963-12-16
•
Granted: 1966-03-01
•
Expires: 1983-12-16
Abstract
No abstract record available.
Inventors
- 👤 Douglas F Corsette
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:33
CPC Classifications
B; B05; B05B; B05B11/00; B05B11/01; B05B11/10; B05B11/1001; B05B11/1023; B05B11/1042; B05B11/1066; B05B11/107
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
208 words
A RECIPROCATING PUMP COMPRISING A PUMP CYLINDER HAVING AN INLET PORT COMMUNICATING WITH ONE END THEREOF, AN ANNULAR PISTON DISPOSED FOR AXIAL RECIPROCATION IN SAID CYLINDER IN FLUID TIGHT FRICTIONAL SLIDING ENGAGEMENT WITH THE INNER WALL OF SAID CYLINDER, SAID PISTON AND THE CLOSED END OF SAID CYLINDER JOINTLY DEFINING A VARIABLE VOLUME PUMP CHAMBER, A TUBULAR PLUNGER ROD EXTENDING COAXIALLY THROUGH SAID PISTON RECIPROCATION IN SAID CYLINDER AND DEFINING A PUMP OUTLET PASSAGE, SAID PLUNGER ROD BEING FORMED WITH AN OUTLET PORT POSITIONED TO ESTABLISH COMMUNICATION BETWEEN SAID PUMP CHAMBER AND SAID OUTLET PASSAGE, SAID PISTON HAVING AN OUTLET VALVE AFFIXED THERETO FOR L IMITED AXIAL SLIDING MOVEMENT ON SAID PLUNGER ROD BETWEEN OPEN AND CLOSED POSITIONS WITH RESPECT TO SAID OUTLET PORT, COOPERATING MEANS POSITIONS WITH RESPECT TO SAID SAID PISTON FOR LIMITING SAID ROD AND PISTON TO RELATIVE MOVEMENT BETWEEN SAID OPEN AND CLOSED POSITION, AND INLET VALVE DISPOSED IN SAID PUMP CHAMBER FOR AXIAL MOVEMENT TO AND FROM CLOSING RELATION WITH RESPECT TO SAID INLET PORT, MEANS YIELDABLY INTERCONNECTING SAID INLET VALVE AND SAID PLUNGER ROD FOR AXIAL MOVEMENT TOGETHER, AND MEANS IN SAID CYLINDER FOR LIMITING THE AXIAL MOVEMENT OF SAID INLET VALVE AWAY FROM CLOSING RELATION WITH RESPECT TO SAID INLET PORT.
Claim 2
Dependent Claim
208 words
A RECIPROCATING PUMP COMPRISING A PUMP CYLINDER HAVING AN INLET PORT COMMUNICATING WITH ONE END THEREOF, AN ANNULAR PISTON DISPOSED FOR AXIAL RECIPROCATION IN SAID CYLINDER IN FLUID TIGHT FRICTIONAL SLIDING ENGAGEMENT WITH THE INNER WALL OF SAID CYLINDER, SAID PISTON AND THE CLOSED END OF SAID CYLINDER JOINTLY DEFINING A VARIABLE VOLUME PUMP CHAMBER, A TUBULAR PLUNGER ROD EXTENDING COAXIALLY THROUGH SAID PISTON RECIPROCATION IN SAID CYLINDER AND DEFINING A PUMP OUTLET PASSAGE, SAID PLUNGER ROD BEING FORMED WITH AN OUTLET PORT POSITIONED TO ESTABLISH COMMUNICATION BETWEEN SAID PUMP CHAMBER AND SAID OUTLET PASSAGE, SAID PISTON HAVING AN OUTLET VALVE AFFIXED THERETO FOR L IMITED AXIAL SLIDING MOVEMENT ON SAID PLUNGER ROD BETWEEN OPEN AND CLOSED POSITIONS WITH RESPECT TO SAID OUTLET PORT, COOPERATING MEANS POSITIONS WITH RESPECT TO SAID SAID PISTON FOR LIMITING SAID ROD AND PISTON TO RELATIVE MOVEMENT BETWEEN SAID OPEN AND CLOSED POSITION, AND INLET VALVE DISPOSED IN SAID PUMP CHAMBER FOR AXIAL MOVEMENT TO AND FROM CLOSING RELATION WITH RESPECT TO SAID INLET PORT, MEANS YIELDABLY INTERCONNECTING SAID INLET VALVE AND SAID PLUNGER ROD FOR AXIAL MOVEMENT TOGETHER, AND MEANS IN SAID CYLINDER FOR LIMITING THE AXIAL MOVEMENT OF SAID INLET VALVE AWAY FROM CLOSING RELATION WITH RESPECT TO SAID INLET PORT.
References Cited (Backward Citations)
US96099A
Cited
US2362081A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |