US3552483A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor vehicle cooler systems
Assignee: Motors Liquidation Co
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Filing: 1969-01-22
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Granted: 1971-01-05
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Expires: 1989-01-22
Abstract
Abstract A motor vehicle engine-cooler system comprising a radiator, a fan, a duct surrounding the fan and extending to the radiator, and a pivoted flap mounted to close an opening in a wall of the duct. When the air pressure in the duct exceeds the ambient air pressure in the engine compartment by a predetermined amount, the flap pivots to open the opening against a biasing force which normally urges the flap to the position in which it closes the opening.
Inventors
- 👤 Reginald Harry North
- 👤 Peter Norman Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:49
CPC Classifications
F; F01; F01P; F01P5/00; F01P5/02; F01P5/06
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
60 words
A motor vehicle engine-cooler system comprising a radiator, a fan, a duct to direct air from the radiator to the fan, and a pressure-sensitive device arranged to divert a portion of the air in the duct to bypass the fan when the air pressure in the duct exceeds ambient ambient air pressure in the engine compartment by a predetermined amount.
Claim 2
Dependent Claim
60 words
A motor vehicle engine-cooler system comprising a radiator, a fan, a duct to direct air from the radiator to the fan, and a pressure-sensitive device arranged to divert a portion of the air in the duct to bypass the fan when the air pressure in the duct exceeds ambient ambient air pressure in the engine compartment by a predetermined amount.
Claim 3
Dependent Claim
67 words
A motor vehicle engine-cooler system comprising a radiator, fan, a duct to direct air from the radiator to the fan, and a pressure-sensitive device mounted in a wall of the duct an arranged to divert a portion of the air in the duct to bypass the fan when the air pressure in the duct exceeds the ambient air pressure in the engine compartment by a predetermined amount.
Claim 4
Dependent Claim
67 words
A motor vehicle engine-cooler system comprising a radiator, fan, a duct to direct air from the radiator to the fan, and a pressure-sensitive device mounted in a wall of the duct an arranged to divert a portion of the air in the duct to bypass the fan when the air pressure in the duct exceeds the ambient air pressure in the engine compartment by a predetermined amount.
Claim 5
Dependent Claim
106 words
A motor vehicle engine-cooler system comprising a radiator, a fan operable to draw air through the radiator, a duct extending between the radiator and the fan and surrounding the fan, a flap mounted on a wall of the duct to normally close an opening in the wall, the flap being outwardly movable with respect to the interior of the duct, and means biasing the flap inwardly to a position closing said opening, whereby a predetermined excess pressure within the duct will overcome the biasing meaNs and open the flap so as to permit a portion of the air passing through the radiator to bypass the fan.
Claim 6
Dependent Claim
106 words
A motor vehicle engine-cooler system comprising a radiator, a fan operable to draw air through the radiator, a duct extending between the radiator and the fan and surrounding the fan, a flap mounted on a wall of the duct to normally close an opening in the wall, the flap being outwardly movable with respect to the interior of the duct, and means biasing the flap inwardly to a position closing said opening, whereby a predetermined excess pressure within the duct will overcome the biasing meaNs and open the flap so as to permit a portion of the air passing through the radiator to bypass the fan.
Claim 7
Dependent Claim
85 words
A motor vehicle engine-cooler system comprising a radiator, a fan, a duct extending between the radiator and the fan and surrounding the fan, a flap mounted on a wall of the duct to normally close an opening in the wall, the flap being made of resilient plastics material and having a groove about which it is pivotably against the inherent resilient opposition of the flap when the air pressure in the duct exceeds the ambient air pressure in the engine compartment by a predetermined amount.
Claim 8
Dependent Claim
85 words
A motor vehicle engine-cooler system comprising a radiator, a fan, a duct extending between the radiator and the fan and surrounding the fan, a flap mounted on a wall of the duct to normally close an opening in the wall, the flap being made of resilient plastics material and having a groove about which it is pivotably against the inherent resilient opposition of the flap when the air pressure in the duct exceeds the ambient air pressure in the engine compartment by a predetermined amount.
References Cited (Backward Citations)
US1820091A
Cited
US2495861A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |