US3327635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pumps
Assignee: Texsteam Inc
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Filing: 1965-12-01
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Granted: 1967-06-27
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Expires: 1985-12-01
Abstract
No abstract record available.
Inventors
- 👤 Norman H Sachnik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:29
CPC Classifications
F; F04; F04B; F04B9/00; F04B9/02; F04B9/06; F01; F01L; F01L23/00; F01L33/00; F01L33/04; F04B53/00; F04B53/06; F04B53/10; F04B53/1002; F04B53/1087; F04B9/08; F04B9/10; F04B9/103; F04B9/107; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7908; Y10T137/7909; Y10T137/791; Y10T137/7912
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
IN A POSITIVE DISPLACEMENT PUMP HAVING A PUMPING CHAMBER AND A PISTON RECIPROCATING THEREIN, AN ACTUATOR FOR SAID PISTON COMPRISING, A CASING, A THRUST ROD RECIPROCALLY MOUNTED IN SAID CASING, MEANS FOR CONNECTING SAID THRUST ROD TO SAID PISTON, A DIAPHRAGM MOTOR HAVING A HOUSING WITH A DIAPHRAGM THEREIN, SAID THRUST ROD EXTENDING INTO SAID HOUSING, MEANS CONNECTING SAID THRUST ROD TO SAID DIAPHRAGM, A SPRING RETURN FOR DRIVING SAID DIAPHRAGM IN ONE DIRECTION, AND MEANS RESPONSIVE TO THE THRUST ROD FOR ALTERNATELY CHARGING WITH AND EXHAUSTING FROM THE DIAPHRAGM HOUSING A PRESSURIZED FLUID, SAID MEANS INCLUDING A ROTARY THREE-WAY VALVE HAVING AN ACTUATOR INTERCONNECTED WITH PRESSURIZED FLUID, A SNAP-OVER CENTER DEVICE INCLUDING A SPRING INTERCONNECTING THE THRUST ROD AND ACTUATOR FOR OPERATING SAID VALVE BETWEEN CHARGE AND EXHAUST POSITIONS, AND MEANS FOR GIVING INITIAL MOVEMENT TO SAID SNAP-OVER CENTER DEVICE, SAID MEANS INCLUDING A BUMPER PLATE ACTUATED BY SAID THRUST ROD.
Claim 2
Dependent Claim
152 words
IN A POSITIVE DISPLACEMENT PUMP HAVING A PUMPING CHAMBER AND A PISTON RECIPROCATING THEREIN, AN ACTUATOR FOR SAID PISTON COMPRISING, A CASING, A THRUST ROD RECIPROCALLY MOUNTED IN SAID CASING, MEANS FOR CONNECTING SAID THRUST ROD TO SAID PISTON, A DIAPHRAGM MOTOR HAVING A HOUSING WITH A DIAPHRAGM THEREIN, SAID THRUST ROD EXTENDING INTO SAID HOUSING, MEANS CONNECTING SAID THRUST ROD TO SAID DIAPHRAGM, A SPRING RETURN FOR DRIVING SAID DIAPHRAGM IN ONE DIRECTION, AND MEANS RESPONSIVE TO THE THRUST ROD FOR ALTERNATELY CHARGING WITH AND EXHAUSTING FROM THE DIAPHRAGM HOUSING A PRESSURIZED FLUID, SAID MEANS INCLUDING A ROTARY THREE-WAY VALVE HAVING AN ACTUATOR INTERCONNECTED WITH PRESSURIZED FLUID, A SNAP-OVER CENTER DEVICE INCLUDING A SPRING INTERCONNECTING THE THRUST ROD AND ACTUATOR FOR OPERATING SAID VALVE BETWEEN CHARGE AND EXHAUST POSITIONS, AND MEANS FOR GIVING INITIAL MOVEMENT TO SAID SNAP-OVER CENTER DEVICE, SAID MEANS INCLUDING A BUMPER PLATE ACTUATED BY SAID THRUST ROD.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-26 | 1970-12-26 | 1971-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-26 | 1974-12-26 | 1975-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-26 | 1978-12-26 | 1979-06-27 | $7700.00 | Window Closed / Lapsed |