Patent US3212280A successfully refreshed from Google Patents.
US3212280A
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Volatile liquid pumping system
Assignee: Air Products and Chemicals Inc
•
Filing: 1963-11-22
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Granted: 1965-10-19
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Expires: 1983-11-22
Abstract
No abstract record available.
Inventors
- 👤 Edmund P Thomas
- 👤 Leif A Ness
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:26
CPC Classifications
F; F04; F04B; F04B15/00; F04B15/06; F04B15/08; F04B53/00; F04B7/00; F04B7/0073; Y; Y10; Y10S; Y10S417/00; Y10S417/901
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A PUMP INCLUDING MEANS FORMING A PUMPING CHAMBER, INLET AND OUTLET VALVE MEANS CONTROLLING FLUID FLOW TO AND FROM SAID CHAMBER, PUMPING MEANS MOVABLE WITH RESPECT TO SAID CHAMBER FOR COMPRESSING FLUID WITHIN SAID CHAMBER, MEANS MOUNTING SAID INLET VALVE MEANS AND PUMPING MEANS FOR MUTUALLY INDEPENDENT MOVEMENT, AND MEANS FOR INTERMITTENTLY CONNECTING SAID PUMPING MEANS TO SAID INLET VALVE MEANS FOR ACTUATING SAID INLET VALVE MEANS IN RESPONSE TO PREDETERMINED MOVEMENTS OF SAID PUMPING MEANS.
Claim 2
Dependent Claim
76 words
A PUMP INCLUDING MEANS FORMING A PUMPING CHAMBER, INLET AND OUTLET VALVE MEANS CONTROLLING FLUID FLOW TO AND FROM SAID CHAMBER, PUMPING MEANS MOVABLE WITH RESPECT TO SAID CHAMBER FOR COMPRESSING FLUID WITHIN SAID CHAMBER, MEANS MOUNTING SAID INLET VALVE MEANS AND PUMPING MEANS FOR MUTUALLY INDEPENDENT MOVEMENT, AND MEANS FOR INTERMITTENTLY CONNECTING SAID PUMPING MEANS TO SAID INLET VALVE MEANS FOR ACTUATING SAID INLET VALVE MEANS IN RESPONSE TO PREDETERMINED MOVEMENTS OF SAID PUMPING MEANS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |