US3318100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot-gas reciprocating apparatus
Assignee: US Philips Corp
•
Filing: 1965-07-16
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Granted: 1967-05-09
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Expires: 1985-07-16
Abstract
No abstract record available.
Inventors
- 👤 Reinhoudt Jacobus Pieter
- 👤 Fokker Herman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:45
CPC Classifications
F; F02; F02G; F02G1/00; F02G1/04; F02G1/043; F02G2243/00; F02G2243/02; F02G2243/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A HOT GAS RECIPROCATING APPARATUS COMPRISING A CYLINDER PROVIDED WITH A WORKING MEDIUM THEREIN, A PISTON ADAPTED FOR RECIPROCATION IN SAID CYLINDER, A DISPLACER IN SAID CYLINDER, SAID PISTON, DISPLACER AND CYLINDER FORMING AT LEAST ONE COMPRESSION SPACE HAVING A VARIABLE VOLUME OF SAID WORKING MEDIUM AND AT LEAST ONE EXPANSION SPACE HAVING A VARIABLE VOLUME OF SAID WORKING MEDIUM, SAID SPACES WHEN OPERATIVE HAVING DIFFERENT AVERAGE TEMPERATURES AND COMMUNICATING WITH EACH OTHER, A FIRST HEAT EXCHANGER ARRANGED IN SAID COMMUNICATION BETWEEN SAID SPACES, AT LEAST TWO SEPARATE DUCTS CONNECTING SAID FIRST HEAT EXCHANGER WITH ONE OF SAID SPACES, A CONTROL DEVICE IN SAID APPARATUS WHICH WHEN SAID WORKING MEDIUM FLOWS IN ONE DIRECTION CONDUCTS SAID WORKING MEDIUM THROUGH ONE OF SAID SEPARATE DUCTS AND WHEN SAID
Claim 2
Dependent Claim
127 words
A HOT GAS RECIPROCATING APPARATUS COMPRISING A CYLINDER PROVIDED WITH A WORKING MEDIUM THEREIN, A PISTON ADAPTED FOR RECIPROCATION IN SAID CYLINDER, A DISPLACER IN SAID CYLINDER, SAID PISTON, DISPLACER AND CYLINDER FORMING AT LEAST ONE COMPRESSION SPACE HAVING A VARIABLE VOLUME OF SAID WORKING MEDIUM AND AT LEAST ONE EXPANSION SPACE HAVING A VARIABLE VOLUME OF SAID WORKING MEDIUM, SAID SPACES WHEN OPERATIVE HAVING DIFFERENT AVERAGE TEMPERATURES AND COMMUNICATING WITH EACH OTHER, A FIRST HEAT EXCHANGER ARRANGED IN SAID COMMUNICATION BETWEEN SAID SPACES, AT LEAST TWO SEPARATE DUCTS CONNECTING SAID FIRST HEAT EXCHANGER WITH ONE OF SAID SPACES, A CONTROL DEVICE IN SAID APPARATUS WHICH WHEN SAID WORKING MEDIUM FLOWS IN ONE DIRECTION CONDUCTS SAID WORKING MEDIUM THROUGH ONE OF SAID SEPARATE DUCTS AND WHEN SAID
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) | 1970-05-08 | 1970-11-07 | 1971-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-08 | 1974-11-07 | 1975-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-08 | 1978-11-07 | 1979-05-09 | $7700.00 | Window Closed / Lapsed |