US4063420A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Repetitive closed Rankine Cycle working fluid as motive power for prime mover
Assignee: Individual
•
Filing: 1975-08-18
•
Granted: 1977-12-20
•
Expires: 1995-08-18
Abstract
Abstract Propionic acid is the working fluid in a repetitive closed Rankine Cycle power plant system.
Inventors
- 👤 Jerome J. Sloyan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:56
CPC Classifications
F; F01; F01K; F01K25/00; F01K25/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
50 words
A Rankine Cycle power plant system comprising a boiler, an engine, a feed line from said boiler to supply working fluid therefrom to said engine, and a return line from said engine to said boiler to recirculate the working fluid through said system, wherein said working fluid is propionic acid.
Claim 2
Dependent Claim
50 words
A Rankine Cycle power plant system comprising a boiler, an engine, a feed line from said boiler to supply working fluid therefrom to said engine, and a return line from said engine to said boiler to recirculate the working fluid through said system, wherein said working fluid is propionic acid.
Claim 3
Dependent Claim
31 words
A Rankine Cycle system according to claim 1 wherein the system is substantially sealed against loss of fluid whereby an initial charge of said fluid is repetitively used in said cycle.
Claim 4
Dependent Claim
18 words
A Rankine Cycle system according to claim 1 wherein a pre-heater tank is interposed in said return line.
Claim 5
Dependent Claim
17 words
A Rankine Cycle system according to claim 1 including an air cooled condenser in said return line.
Claim 6
Dependent Claim
15 words
A Rankine Cycle system according to claim 4 wherein the air cooling is thermostatically controlled.
References Cited (Backward Citations)
US3234734A
Cited
US3516248A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-12-19 | 1981-06-20 | 1981-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-19 | 1985-06-20 | 1985-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-19 | 1989-06-20 | 1989-12-20 | $7700.00 | Window Closed / Lapsed |