US3198176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal-molecular heating system
Assignee: Individual
•
Filing: 1961-01-30
•
Granted: 1965-08-03
•
Expires: 1981-01-30
Abstract
No abstract record available.
Inventors
- 👤 Helmer Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:24
CPC Classifications
F; F02; F02G; F02G5/00; F02G5/02; F22; F22B; F22B3/00; F22B3/06; Y; Y02; Y02E; Y02E20/00; Y02E20/14; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A HEATING SYSTEM COMPRISING AN INTERNAL COMBUSTION ENGINE, A BOILER FOR WATER TO BE HEATED, A HYSTERESIS COUPLING ING SAID BOILER HAVING A ROTOR AND A HYSTERESIS RING, MEANS CONNECTING SAID ENGINE TO SAID ROTOR, MEANS FOR FIXING SAID RING INSIDE OF SAID BOILER AND HOLDING SAID
Claim 2
Dependent Claim
47 words
A HEATING SYSTEM COMPRISING AN INTERNAL COMBUSTION ENGINE, A BOILER FOR WATER TO BE HEATED, A HYSTERESIS COUPLING ING SAID BOILER HAVING A ROTOR AND A HYSTERESIS RING, MEANS CONNECTING SAID ENGINE TO SAID ROTOR, MEANS FOR FIXING SAID RING INSIDE OF SAID BOILER AND HOLDING 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) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |