US3372735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary heat-exchangers and hot-gas engines
Assignee: US Philips Corp
•
Filing: 1966-03-07
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Granted: 1968-03-12
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Expires: 1986-03-07
Abstract
No abstract record available.
Inventors
- 👤 Meijer Roelf Jan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:07
CPC Classifications
F; F02; F02M; F02M31/00; F02M31/02; F02M31/04; F02M31/06; F02M31/08; F02M31/087; F02G; F02G1/00; F02G1/04; F02G1/043; F02G1/053; F02G1/057; F28; F28D; F28D19/00; F28D19/04; F28D19/041; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10S; Y10S165/00; Y10S165/009; Y10S165/013; Y10S165/016; Y10S165/02; Y10S165/021
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A ROTARY REGENERATOR COMPRISING A ROTOR HAVING A GLASS CERAMIC MATERIAL OF A LOW COEFFICIENT OF EXPANSION ADAPTED FOR THE PASSAGE OF GAS THERETHROUGH, SAID CERAMIC ROTOR BEING PROVIDED WITH INLET AND OUTLET PASSAGES FOR THE HEAT EXCHANGING MEDIA, A HOUSING SPACED FROM SAID CERAMIC ROTOR AND CONSTITUTED OF A GLASS CERAMIC MATERIAL HAVING A COEFFICIENT OF EXPANSION WHICH IS SUBSTANTIALLY EQUAL TO THE COEFFICIENT OF EXPANSION OF SAID CERAMIC ROTOR AND A SEAL BETWEEN SAID HOUSING AND SAID CERAMIC ROTOR BEING A GAP SEAL.
Claim 2
Dependent Claim
85 words
A ROTARY REGENERATOR COMPRISING A ROTOR HAVING A GLASS CERAMIC MATERIAL OF A LOW COEFFICIENT OF EXPANSION ADAPTED FOR THE PASSAGE OF GAS THERETHROUGH, SAID CERAMIC ROTOR BEING PROVIDED WITH INLET AND OUTLET PASSAGES FOR THE HEAT EXCHANGING MEDIA, A HOUSING SPACED FROM SAID CERAMIC ROTOR AND CONSTITUTED OF A GLASS CERAMIC MATERIAL HAVING A COEFFICIENT OF EXPANSION WHICH IS SUBSTANTIALLY EQUAL TO THE COEFFICIENT OF EXPANSION OF SAID CERAMIC ROTOR AND A SEAL BETWEEN SAID HOUSING AND SAID CERAMIC ROTOR BEING A GAP SEAL.
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) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |