Patent US3884293A successfully refreshed from Google Patents.
US3884293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling means
Assignee: Isothermics Inc
•
Filing: 1973-07-23
•
Granted: 1975-05-20
•
Expires: 1993-07-23
Abstract
Abstract The present invention comprises a means for cooling an engine, such as might be found in a conventional automotive vehicle. More particularly, the instant invention comprises: (1) a heat pipe having a condenser end and an evaporator end, wherein the evaporator end is in thermal contact with the engine to be cooled; and (2) a finned heat sink joined to the condenser end, whereby heat from said engine is vaporously transported through said heat pipe from the evaporator end to the condenser end of said pipe, and convected therefrom into the ambient air.
Inventors
- 👤 Richard L Pessolano
- 👤 Robin B Rhodes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:13
CPC Classifications
F; F01; F01P; F01P3/00; F01P3/22; F01M; F01M11/00; F01M11/10; F01M11/12; F01M5/00; F01M5/002; F28; F28D; F28D15/00; F28D15/02; F01P2003/2278
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
97 words
A means for cooling an oil lubrication subsystem of an automotive vehicle, comprising: a. a heat pipe having a condensor end and an evaporator end, said evaporator end removably insertable into the dip stick hole of the oil lubrication subsystem, said heat pipe including an oil level indicator placed near said evaporator end; and b. a heat sink joined to the condensor end, whereby heat from said subsystem is vaporously transported within said heat pipe from the evaporator end to the condensor end, and transported therefrom into a medium of lower temperature than that of said subsystem.
Claim 2
Dependent Claim
97 words
A means for cooling an oil lubrication subsystem of an automotive vehicle, comprising: a. a heat pipe having a condensor end and an evaporator end, said evaporator end removably insertable into the dip stick hole of the oil lubrication subsystem, said heat pipe including an oil level indicator placed near said evaporator end; and b. a heat sink joined to the condensor end, whereby heat from said subsystem is vaporously transported within said heat pipe from the evaporator end to the condensor end, and transported therefrom into a medium of lower temperature than that of said subsystem.
Claim 3
Dependent Claim
15 words
The cooling means as recited in claim 1 in which said heat sink is finned.
Claim 4
Dependent Claim
15 words
The cooling means as recited in claim 1 in which said evaporator end is finned.
Claim 5
Dependent Claim
17 words
The cooling means as recited in claim 1 in which said heat pipe comprises a reflux condenser.
Claim 6
Dependent Claim
94 words
A new use of a heat pipe, wherein said new use resides in a method of cooling an oil lubrication subsystem of an engine, comprising the steps of: a. adjoining a heat sink to the condensor end of the heat pipe; and b. removably inserting the evaporator end of said heat pipe into the dip stick hole of said subsystem, whereby heat from said subsystem is vaporously transported within said heat pipe from its evaporator end to its condensor end, and transported therefrom into a medium of lower temperature than that of said subsystem.
Claim 7
Dependent Claim
94 words
A new use of a heat pipe, wherein said new use resides in a method of cooling an oil lubrication subsystem of an engine, comprising the steps of: a. adjoining a heat sink to the condensor end of the heat pipe; and b. removably inserting the evaporator end of said heat pipe into the dip stick hole of said subsystem, whereby heat from said subsystem is vaporously transported within said heat pipe from its evaporator end to its condensor end, and transported therefrom into a medium of lower temperature than that of said subsystem.
References Cited (Backward Citations)
US837499A
Cited
US2487215A
Cited
US2629041A
Cited
US2835480A
Cited
US2766974A
Cited
US3274691A
Cited
US3332476A
Cited
US3701342A
Cited
US3731660A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-19 | 1978-11-18 | 1979-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-19 | 1982-11-18 | 1983-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-19 | 1986-11-18 | 1987-05-20 | $7700.00 | Window Closed / Lapsed |