Patent US3299828A successfully refreshed from Google Patents.
US3299828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reciprocating cryogenic pump
Assignee: Lox Equipment Co
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Filing: 1964-12-16
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Granted: 1967-01-24
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Expires: 1984-12-16
Abstract
No abstract record available.
Inventors
- 👤 Josephian William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:23
CPC Classifications
F; F04; F04B; F04B53/00; F04B53/16; F04B53/162; F04B53/164; F04B15/00; F04B15/06; F04B15/08; F04B53/14; F04B53/144; Y; Y10; Y10S; Y10S417/00; Y10S417/901
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
197 words
AN IMPROVED RECIPROCATING CRYOGENIC PUMP COMPRISING A PUMPING SECTION INCLUDING A HEAD WITH A BORE EXTENDING THEREINTO AND A PUMPING PISTON MOUNTED FOR RECIPROCATION IN SAID BORE AND DEFINING THEREWITH A PUMPING CHAMBER FOR LIQUEFIED GAS, A DRIVING SECTION INCLUDING A BODY WITH A CYLINDER BORE HAVING A DRIVE PISTON MOUNTED FOR RECIPROCATION THEREIN AND A LUBRICATING SYSTEM COMMUNICATED THEREWITH, SAID BODY HAVING A ROD ACCOMMODATING BORE IN AN END THEREOF COAXIAL WITH RESPECT TO SAID CYLINDER BORE, A PISTON ROD COAXIALLY SECURED AT ITS OPPOSITE ENDS TO SAID DRIVE PISTON AND SAID PUMPING PISTON AND EXTENDING THROUGH SAID ROD ACCOMMODATING BORE, SAID DRIVE PISTON AND PUMPING PISTON AND PISTON ROD FORMING AN INTEGRAL RECIPROCAL PISTON ASSEMBLY, A SPACER SLEEVE DISPOSED IN CONCENTRIC OUTWARDLY SPACED RELATION TO SAID ROD AND SECURED AT ITS OPPOSITE ENDS TO SAID BODY AND SAID HEAD, THE INTERIOR OF SAID SLEEVE AND CLEARANCES BETWEEN SAID PUMPING PISTON AND HEAD BORE AND BETWEEN SAID PISTON ROD AND ROD ACCOMMODATING BORE DEFINING A PASSAGE BETWEEN INTERIOR PORTIONS OF SAID PUMPING SECTION HEAD AND DRIVING SECTION BODY, AND A FLEXIBLE IMPERVIOUS WALL SEALABLY SECURED BETWEEN SAID PISTON ASSEMBLY AND A WALL PORTION OF SAID PASSAGE.
Claim 2
Dependent Claim
197 words
AN IMPROVED RECIPROCATING CRYOGENIC PUMP COMPRISING A PUMPING SECTION INCLUDING A HEAD WITH A BORE EXTENDING THEREINTO AND A PUMPING PISTON MOUNTED FOR RECIPROCATION IN SAID BORE AND DEFINING THEREWITH A PUMPING CHAMBER FOR LIQUEFIED GAS, A DRIVING SECTION INCLUDING A BODY WITH A CYLINDER BORE HAVING A DRIVE PISTON MOUNTED FOR RECIPROCATION THEREIN AND A LUBRICATING SYSTEM COMMUNICATED THEREWITH, SAID BODY HAVING A ROD ACCOMMODATING BORE IN AN END THEREOF COAXIAL WITH RESPECT TO SAID CYLINDER BORE, A PISTON ROD COAXIALLY SECURED AT ITS OPPOSITE ENDS TO SAID DRIVE PISTON AND SAID PUMPING PISTON AND EXTENDING THROUGH SAID ROD ACCOMMODATING BORE, SAID DRIVE PISTON AND PUMPING PISTON AND PISTON ROD FORMING AN INTEGRAL RECIPROCAL PISTON ASSEMBLY, A SPACER SLEEVE DISPOSED IN CONCENTRIC OUTWARDLY SPACED RELATION TO SAID ROD AND SECURED AT ITS OPPOSITE ENDS TO SAID BODY AND SAID HEAD, THE INTERIOR OF SAID SLEEVE AND CLEARANCES BETWEEN SAID PUMPING PISTON AND HEAD BORE AND BETWEEN SAID PISTON ROD AND ROD ACCOMMODATING BORE DEFINING A PASSAGE BETWEEN INTERIOR PORTIONS OF SAID PUMPING SECTION HEAD AND DRIVING SECTION BODY, AND A FLEXIBLE IMPERVIOUS WALL SEALABLY SECURED BETWEEN SAID PISTON ASSEMBLY AND A WALL PORTION OF SAID PASSAGE.
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) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |