Patent US3135218A successfully refreshed from Google Patents.
US3135218A
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Pump with lost motion structure about diaphragm plunger
Assignee: Motors Liquidation Co
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Filing: 1962-11-23
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Granted: 1964-06-02
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Expires: 1982-11-23
Abstract
No abstract record available.
Inventors
- 👤 Toschkoff Dimitar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:36
CPC Classifications
F; F04; F04B; F04B53/00; F04B53/14; F04B53/144; F02; F02M; F02M1/00; F02M59/00; F02M59/12; F02M59/14; F04B43/00; F04B43/02; F02M2700/00; F02M2700/13; F02M2700/1317; F02M2700/1323; F02M2700/43; F02M2700/4302; F02M2700/438; F02M2700/4388; F02M2700/439
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A PUMP INCLUDING A PUMPING DIAPHRAGM, A FIRST PUMP BODY DEFINING A PUMP CHAMBER AND INLET AND OUTLET CHAMBERS ON ONE SIDE OF SAID DIAPHRAGM, ONE-WAY VALVES ARRANGED TO CONTROL FLOW THROUGH SAID INLET CHAMBER, PUMP CHAMBER AND OUTLET CHAMBER, A SECOND PUMP BODY COOPERATING WITH SAID DIAPHRAGM IN DEFINING A VENTED SPRING CHAMBER ON THE OTHER SIDE OF SAID DIAPHRAGM, A PUMPING SPRING IN SAID SPRING CHAMBER AND ACTING AGAINST SAID DIAPHRAGM, A PLUNGER IN SAID SECOND PUMP BODY AND FIXED TO SAID DIAPHRAGM, A HEAD ON SAID PLUNGER, A FIXED
Claim 2
Dependent Claim
92 words
A PUMP INCLUDING A PUMPING DIAPHRAGM, A FIRST PUMP BODY DEFINING A PUMP CHAMBER AND INLET AND OUTLET CHAMBERS ON ONE SIDE OF SAID DIAPHRAGM, ONE-WAY VALVES ARRANGED TO CONTROL FLOW THROUGH SAID INLET CHAMBER, PUMP CHAMBER AND OUTLET CHAMBER, A SECOND PUMP BODY COOPERATING WITH SAID DIAPHRAGM IN DEFINING A VENTED SPRING CHAMBER ON THE OTHER SIDE OF SAID DIAPHRAGM, A PUMPING SPRING IN SAID SPRING CHAMBER AND ACTING AGAINST SAID DIAPHRAGM, A PLUNGER IN SAID SECOND PUMP BODY AND FIXED TO SAID DIAPHRAGM, A HEAD ON SAID PLUNGER, A FIXED
References Cited (Backward Citations)
US2426965A
Cited
US2868135A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-02 | 1967-12-02 | 1968-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-02 | 1971-12-02 | 1972-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-02 | 1975-12-02 | 1976-06-02 | $7700.00 | Window Closed / Lapsed |