US3753345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power fluid
Assignee: Aerojet Rocketdyne Inc
•
Filing: 1971-11-01
•
Granted: 1973-08-21
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Expires: 1991-11-01
Abstract
Abstract A working fluid for use in a Rankine cycle engine consists of a mixture of hexafluorobenzene and perfluorotoluene.
Inventors
- 👤 F Cassidy
- 👤 R Garcia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:26
CPC Classifications
F; F01; F01K; F01K25/00; F01K25/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
17 words
The method according to claim 1 in which said fluid is utilized in a Rankine cycle engine.
Claim 2
Dependent Claim
17 words
The method according to claim 2 in which a turbine expander is utilized to perform said work.
Claim 3
Dependent Claim
16 words
A method according to claim 3 in which mechanical energy is produced by said turbine expander.
Claim 4
Dependent Claim
15 words
Method according to claim 3 in which electrical energy is produced by said turbine expander.
Claim 5
Dependent Claim
33 words
A working fluid for power generation which comprises: a mixture of hexafluorobenzene and perfluorotoluene, said mixture having a range of 1 to 99 percent of hexafluorobenzene and 99 to 1 percent of perfluorotoluene.
Claim 6
Dependent Claim
17 words
A working fluid according to claim 5, having approximately equal amounts by weight of hexafluorobenzene and perfluorotolune.
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) | 1976-08-20 | 1977-02-19 | 1977-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-20 | 1981-02-19 | 1981-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-20 | 1985-02-19 | 1985-08-21 | $7700.00 | Window Closed / Lapsed |