US3134332A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump and liquid level regulator
Assignee: Individual
•
Filing: 1962-03-19
•
Granted: 1964-05-26
•
Expires: 1982-03-19
Abstract
No abstract record available.
Inventors
- 👤 Robert E Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:54
CPC Classifications
F; F16; F16N; F16N19/00; F16N19/006; F01; F01M; F01M11/00; F01M11/06; F02; F02M; F02M1/00; F04; F04B; F04B43/00; F04B43/02; F04B43/06; F04B53/00; F04B53/10; F04B53/12; F04B53/121; F04B9/00; F04B9/08; F04B9/12; F04B9/123; F02M2700/00; F02M2700/43; F02M2700/4302; F02M2700/438; F02M2700/4388; F02M2700/439
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
IN A SYSTEM INCLUDING A BODY OF LIQUID, A FLUID-DISPLACEABLE ELEMENT, A SOURCE OF PULSATING FORCE ADAPTED TO URGE SAID ELEMENT IN RECIPROCATION, AND MEANS FOR CONTROLLING RECIPROCATION THEREOF IN RESPONSE TO THE LEVEL OF SAID LIQUID, COMPRISING A DUCT ADAPTED TO RECEIVE FLUID DISPLACEMENT OF SAID ELEMENT AND HAVING A TERMINATION AT A POINT IN SAID SYSTEM IN COMMUNICATION WITH SAID LIQUID AND WHICH MAY OR MAY NOT BE SUBMERGED BY SAID
Claim 2
Dependent Claim
73 words
IN A SYSTEM INCLUDING A BODY OF LIQUID, A FLUID-DISPLACEABLE ELEMENT, A SOURCE OF PULSATING FORCE ADAPTED TO URGE SAID ELEMENT IN RECIPROCATION, AND MEANS FOR CONTROLLING RECIPROCATION THEREOF IN RESPONSE TO THE LEVEL OF SAID LIQUID, COMPRISING A DUCT ADAPTED TO RECEIVE FLUID DISPLACEMENT OF SAID ELEMENT AND HAVING A TERMINATION AT A POINT IN SAID SYSTEM IN COMMUNICATION WITH SAID LIQUID AND WHICH MAY OR MAY NOT BE SUBMERGED BY SAID
References Cited (Backward Citations)
US166786A
Cited
US2067358A
Cited
US2095602A
Cited
US2101218A
Cited
US2629328A
Cited
US2683060A
Cited
US2775944A
Cited
US2781728A
Cited
US2943765A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-26 | 1967-11-25 | 1968-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-26 | 1971-11-25 | 1972-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-26 | 1975-11-25 | 1976-05-26 | $7700.00 | Window Closed / Lapsed |