Brakes – Internal-resistance motion retarder – Combined with surface-friction brake
Patent
1989-10-02
1991-04-16
Reger, Duane A.
Brakes
Internal-resistance motion retarder
Combined with surface-friction brake
188291, 188294, F16D 5706
Patent
active
050075098
ABSTRACT:
A brake system comprises an impeller selectively connected to a propeller shaft of a vehicle for consuming energy of the engine and applying a brake force to the propeller shaft, an impeller housing for rotatably housing the impeller and defining an air passage for introducing/discharging external air to/from the impeller, a throttle valve disposed in the air passage upstream of the impeller for adjusting the air flow rate in the air passage, and a negative pressure actuator for moving the throttle valve in accordance with the air flow rate in the air passage. The throttle valve is moved by the negative pressure actuator in accordance with the air flow rate in the air passage. In other words, the brake system adjusts the brake force mechanically by itself in a manner such that an excessive brake force is never applied to the propeller shaft. The brake system does not require a cooling device and only requires a simple arrangement for controlling the brake force.
REFERENCES:
patent: 1416822 (1922-05-01), Heath
patent: 1677481 (1928-07-01), Lareva
patent: 3155197 (1964-11-01), Lee et al.
patent: 3265162 (1966-08-01), Botterill
patent: 3373847 (1968-03-01), Rohacs
patent: 4484668 (1984-11-01), Williamson
Gossett Dykema
Isuzu Motors Limited
Reger Duane A.
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