Patent US2598816A successfully refreshed from Google Patents.
US2598816A
Expired / Lapsed
US
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Method and apparatus for pumping a volatile liquid
Assignee: Union Carbide Corp
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Filing: 1941-07-18
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Granted: 1952-06-03
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Expires: 1961-07-18
Abstract
No abstract record available.
Inventors
- 👤 William F Mesinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:25
CPC Classifications
F; F04; F04B; F04B15/00; F04B15/06; F04B15/08; Y; Y10; Y10S; Y10S417/00; Y10S417/901
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
APPARATUS FOR PUMPING A VOLATILE LIQUID HAVING A BOILING POINT TEMPERATURE MATERIALLY LESS THAN 273* K. AT ATMOSPHERIC PRESSURE, COMPRISING THE COMBINATION WITH A DEVICE FOR SUPPLYING LIQUID TO BE PUMPED HAVING THEREIN SPACES FOR BOTH GAS AND LIQUID, OF A PUMP HAVING A PUMP CHAMBER IN COMMUNICATION RESPECTIVELY WITH SAID GAS AND LIQUID SPACES, VALVE MEANS FOR CLOSING SAID COMMUNICATION, A LIQUID DISCHARGE FOR SAID PUMP CHAMBER, A PLUNGER ARRANGED TO WORK IN SAID PUMP CHAMBER, THE LATTER BEING PROVIDED WITH A DESIRED CLEARANCE AND SAID PLUNGER BEING ADAPTED TO DISPLACE LIQUID THROUGH SAID DISCHARGE, MEANS FOR SUPERCHARGING THE CLEARANCE SPACE IN
Claim 2
Dependent Claim
103 words
APPARATUS FOR PUMPING A VOLATILE LIQUID HAVING A BOILING POINT TEMPERATURE MATERIALLY LESS THAN 273* K. AT ATMOSPHERIC PRESSURE, COMPRISING THE COMBINATION WITH A DEVICE FOR SUPPLYING LIQUID TO BE PUMPED HAVING THEREIN SPACES FOR BOTH GAS AND LIQUID, OF A PUMP HAVING A PUMP CHAMBER IN COMMUNICATION RESPECTIVELY WITH SAID GAS AND LIQUID SPACES, VALVE MEANS FOR CLOSING SAID COMMUNICATION, A LIQUID DISCHARGE FOR SAID PUMP CHAMBER, A PLUNGER ARRANGED TO WORK IN SAID PUMP CHAMBER, THE LATTER BEING PROVIDED WITH A DESIRED CLEARANCE AND SAID PLUNGER BEING ADAPTED TO DISPLACE LIQUID THROUGH SAID DISCHARGE, MEANS FOR SUPERCHARGING THE CLEARANCE SPACE IN
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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) | 1955-06-03 | 1955-12-03 | 1956-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-03 | 1959-12-03 | 1960-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-03 | 1963-12-03 | 1964-06-03 | $7700.00 | Window Closed / Lapsed |