US4679530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling system for an automobile engine
Assignee: Individual
•
Filing: 1986-02-18
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Granted: 1987-07-14
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Expires: 2006-02-18
Abstract
Abstract A cooling system has a first passage communicating an outlet of water jackets with an inlet of a radiator, a second passage communicating an outlet of the radiator with an inlet of a water pump, and a bypass connected between the first passage and a thermostat housing. A thermostat comprising a thermo-sensitive device and a valve is disposed in the second passage, so that the valve closes the second passage. The thermo-sensitive device is disposed in the bypass, so that the thermo-sensitive device is exposed to coolant passing the bypass.
Inventors
- 👤 Yoshikazu Kuze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:04
CPC Classifications
F; F01; F01P; F01P3/00; F01P3/20; F01P7/00; F01P7/14; F01P7/16; G; G05; G05D; G05D23/00; G05D23/01; G05D23/13; G05D23/1306; G05D23/132; G05D23/1333; G05D23/134
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
165 words
A cooling system for an automobile engine having a water jacket, a radiator, a water pump, and a thermostat housing, comprising: a first passage communicating an upper outlet of the water jacket with an inlet of the radiator provided at a lower portion thereof; a second passage communicating an upper outlet of the radiator with an inlet of the water pump and having the thermostat housing at the upstream of the pump; an outlet of the pump being communicated with a lower inlet of the water jacket; a bypass connected between the first passage and the thermostat housing; a thermostat comprising a thermo-sensitive device, a first valve and a second valve disposed in the thermostat housing, both the valves being operatively connected to the thermo-sensitive device, so that the first valve closes the second passage and the second valve opens the bypass; the thermo-sensitive device being disposed in the bypass and the first and second valves being operated by the operation of the thermo-sensitive device.
Claim 2
Dependent Claim
165 words
A cooling system for an automobile engine having a water jacket, a radiator, a water pump, and a thermostat housing, comprising: a first passage communicating an upper outlet of the water jacket with an inlet of the radiator provided at a lower portion thereof; a second passage communicating an upper outlet of the radiator with an inlet of the water pump and having the thermostat housing at the upstream of the pump; an outlet of the pump being communicated with a lower inlet of the water jacket; a bypass connected between the first passage and the thermostat housing; a thermostat comprising a thermo-sensitive device, a first valve and a second valve disposed in the thermostat housing, both the valves being operatively connected to the thermo-sensitive device, so that the first valve closes the second passage and the second valve opens the bypass; the thermo-sensitive device being disposed in the bypass and the first and second valves being operated by the operation of the thermo-sensitive device.
Claim 3
Dependent Claim
142 words
A cooling system for an automobile engine having water jackets, a radiator, a water pump, and a thermostat housing, comprising: a first passage communicating an outlet of the water jackets with an inlet of the radiator; a second passage communicating an outlet of the radiator with an inlet of the water pump and having the thermostat housing at the upstream of the pump; a bypass connected between the first passage and the thermostat housing; a thermostat comprising a thermo-sensitive device and a first valve and disposed in the thermostat housing, so that the first valve closes the second passage, the thermo-sensitive device being disposed in the bypass adjacent the junction of the bypass and the thermostat housing so that the thermo-sensitive device is exposed to coolant passing the junction, and the inlet of the radiator is provided at a lower position thereof.
Claim 4
Dependent Claim
142 words
A cooling system for an automobile engine having water jackets, a radiator, a water pump, and a thermostat housing, comprising: a first passage communicating an outlet of the water jackets with an inlet of the radiator; a second passage communicating an outlet of the radiator with an inlet of the water pump and having the thermostat housing at the upstream of the pump; a bypass connected between the first passage and the thermostat housing; a thermostat comprising a thermo-sensitive device and a first valve and disposed in the thermostat housing, so that the first valve closes the second passage, the thermo-sensitive device being disposed in the bypass adjacent the junction of the bypass and the thermostat housing so that the thermo-sensitive device is exposed to coolant passing the junction, and the inlet of the radiator is provided at a lower position thereof.
Claim 5
Dependent Claim
142 words
A cooling system for an automobile engine having water jackets, a radiator, a water pump, and a thermostat housing, comprising: a first passage communicating an outlet of the water jackets with an inlet of the radiator; a second passage communicating an outlet of the radiator with an inlet of the water pump and having the thermostat housing at the upstream of the pump; a bypass connected between the first passage and the thermostat housing; a thermostat comprising a thermo-sensitive device and a first valve and disposed in the thermostat housing, so that the first valve closes the second passage, the thermo-sensitive device being disposed in the bypass adjacent the junction of the bypass and the thermostat housing so that the thermo-sensitive device is exposed to coolant passing the junction, and the first valve is provided at an upper position in the thermostat.
Claim 6
Dependent Claim
142 words
A cooling system for an automobile engine having water jackets, a radiator, a water pump, and a thermostat housing, comprising: a first passage communicating an outlet of the water jackets with an inlet of the radiator; a second passage communicating an outlet of the radiator with an inlet of the water pump and having the thermostat housing at the upstream of the pump; a bypass connected between the first passage and the thermostat housing; a thermostat comprising a thermo-sensitive device and a first valve and disposed in the thermostat housing, so that the first valve closes the second passage, the thermo-sensitive device being disposed in the bypass adjacent the junction of the bypass and the thermostat housing so that the thermo-sensitive device is exposed to coolant passing the junction, and the first valve is provided at an upper position in the thermostat.
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) | 1990-07-13 | 1991-01-12 | 1991-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-13 | 1995-01-12 | 1995-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-13 | 1999-01-12 | 1999-07-14 | $7700.00 | Window Closed / Lapsed |