US3175508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable fluid delivery or intake pump
Assignee: White Consolidated Industries Inc
•
Filing: 1960-10-26
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Granted: 1965-03-30
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Expires: 1980-10-26
Abstract
No abstract record available.
Inventors
- 👤 Charles B Smithson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:34
CPC Classifications
F; F04; F04B; F04B1/00; F04B1/12; F04B1/26; F04B1/30; F04B1/303
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
IN A POSITIVE DISPLACEMENT PUMP OF THE TYPE HAVING A PLURALITY OF PUMPING CHAMBERS REVOLVING IN A FIXED PATH OF MOVEMENT, THE IMPROVEMENT COMPRISING MEANS DEFINING A FLUID INLET PORT FOR ADMITTING FLUID TO THE PUMP AND A PAIR OF FLUID OUTLET PORTS FOR DISCHARGING FLUID FROM THE PUMP, AND FLOW CONTROL MEANS PROVIDING FLOW COMMUNICATION BETWEEN SAID PORTS AND EACH OF THE PUMPING CHAMBERS SUCCESSIVELY DURING MOVEMENT THEREOF, SAID FLOW CONTROL MEANS INCLUDING MEANS DEFINING A SLOT OF FIXED SIZE IN REGISTER WITH SAID INELT PORT AND A PAIR OF SLOTS OF VARIABLE SIZE IN REGISTER RESPECTIVELY WITH SAID OUTLET PORTS FOR DIVIDING THE FLUID DELIVERY FROM THE PUMP BETWEEN SAID OUTLET PORTS IN A PREDETERMINED RATIO.
Claim 2
Dependent Claim
118 words
IN A POSITIVE DISPLACEMENT PUMP OF THE TYPE HAVING A PLURALITY OF PUMPING CHAMBERS REVOLVING IN A FIXED PATH OF MOVEMENT, THE IMPROVEMENT COMPRISING MEANS DEFINING A FLUID INLET PORT FOR ADMITTING FLUID TO THE PUMP AND A PAIR OF FLUID OUTLET PORTS FOR DISCHARGING FLUID FROM THE PUMP, AND FLOW CONTROL MEANS PROVIDING FLOW COMMUNICATION BETWEEN SAID PORTS AND EACH OF THE PUMPING CHAMBERS SUCCESSIVELY DURING MOVEMENT THEREOF, SAID FLOW CONTROL MEANS INCLUDING MEANS DEFINING A SLOT OF FIXED SIZE IN REGISTER WITH SAID INELT PORT AND A PAIR OF SLOTS OF VARIABLE SIZE IN REGISTER RESPECTIVELY WITH SAID OUTLET PORTS FOR DIVIDING THE FLUID DELIVERY FROM THE PUMP BETWEEN SAID OUTLET PORTS IN A PREDETERMINED RATIO.
References Cited (Backward Citations)
US1482807A
Cited
US2081270A
Cited
US2368883A
Cited
US2608933A
Cited
US2721519A
Cited
US2674196A
Cited
GB752021A
Cited
US2780170A
Cited
US2898862A
Cited
US3120814A
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 |