Patent US3175738A successfully refreshed from Google Patents.
US3175738A
Expired / Lapsed
US
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Means for dispensing measured quantities of liquid
Assignee: Rubery Owen and Co Ltd
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Filing: 1963-09-16
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Granted: 1965-03-30
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Expires: 1983-09-16
Abstract
No abstract record available.
Inventors
- 👤 Wyers George James
- 👤 Norton Henry Patrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:14
CPC Classifications
A; A47; A47L; A47L15/00; A47L15/42; A47L15/44; A47L15/4418; D; D06; D06F; D06F39/00; D06F39/02; D06F39/022; G; G01; G01F; G01F11/00; G01F11/28; G01F11/30; G01F11/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
186 words
MEANS FOR DISPENSING MEASURED QUANTITIES OF LIQUID COMPRISING A BODY, A SUBSTANTIALLY VERTICAL BORE IN THE BODY, A PORT LEADING INTO SAID BORE ADJACENT TO THE LOWER END THEREOF AND ADAPTED TO BE CONNECTED TO A CONTAINER FOR THE LIQUID TO BE DISPENSED, A CLOSURE FOR THE LOWER END OF THE BORE, AN AXIAL PASSAGE THROUGH SAID CLOSURE, UPPER AND LOWER VALVE SEATS AT THE TOP AND BOTTOM ENDS OF SAID PASSAGE, A PLUNGER WORKING IN THE BORE, SPRING MEANS URGING SAID PLUNGER IN AN UPWARD DIRECTION, A STEM EXTENDING DOWNWARDLY FROM THE PLUNGER THROUGH SAID PASSAGE IN THE CLOSURE, AND A VALVE HEAD ON THE LOWER END OF SAID STEM WHICH NORMALLY ENGAGES THE LOWER VALVE SEAT AND CLOSES SAID PASSAGE, DEPRESSION OF THE PLUNGER MOVING THE VALVE HEAD AWAY FROM THE LOWER SEAT AND FORCING LIQUID IN THE LOWER END OF THE BORE OUT THROGH THE PASSAGE IN THE CLOSURE UNTIL THE LOWER END OF THE PLUNGER ENGAGES THE UPPER VALVE SEAT, SAID VALVE HEAD BEING ADJUSTABLE AXIALLY ON THE STEM FOR VARYING THE VOLUME OF LIQUID DELIVERED ON EACH DEPRESSION OF THE PLUNGER.
Claim 2
Dependent Claim
186 words
MEANS FOR DISPENSING MEASURED QUANTITIES OF LIQUID COMPRISING A BODY, A SUBSTANTIALLY VERTICAL BORE IN THE BODY, A PORT LEADING INTO SAID BORE ADJACENT TO THE LOWER END THEREOF AND ADAPTED TO BE CONNECTED TO A CONTAINER FOR THE LIQUID TO BE DISPENSED, A CLOSURE FOR THE LOWER END OF THE BORE, AN AXIAL PASSAGE THROUGH SAID CLOSURE, UPPER AND LOWER VALVE SEATS AT THE TOP AND BOTTOM ENDS OF SAID PASSAGE, A PLUNGER WORKING IN THE BORE, SPRING MEANS URGING SAID PLUNGER IN AN UPWARD DIRECTION, A STEM EXTENDING DOWNWARDLY FROM THE PLUNGER THROUGH SAID PASSAGE IN THE CLOSURE, AND A VALVE HEAD ON THE LOWER END OF SAID STEM WHICH NORMALLY ENGAGES THE LOWER VALVE SEAT AND CLOSES SAID PASSAGE, DEPRESSION OF THE PLUNGER MOVING THE VALVE HEAD AWAY FROM THE LOWER SEAT AND FORCING LIQUID IN THE LOWER END OF THE BORE OUT THROGH THE PASSAGE IN THE CLOSURE UNTIL THE LOWER END OF THE PLUNGER ENGAGES THE UPPER VALVE SEAT, SAID VALVE HEAD BEING ADJUSTABLE AXIALLY ON THE STEM FOR VARYING THE VOLUME OF LIQUID DELIVERED ON EACH DEPRESSION OF THE PLUNGER.
References Cited (Backward Citations)
US863213A
Cited
US2925102A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-29 | 1968-09-28 | 1969-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-29 | 1972-09-28 | 1973-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-29 | 1976-09-28 | 1977-03-30 | $7700.00 | Window Closed / Lapsed |