Brakes – Internal-resistance motion retarder – Using a rotary-type fluid damper
Patent
1995-06-07
1996-09-24
Ballato, Josie
Brakes
Internal-resistance motion retarder
Using a rotary-type fluid damper
188294, F16D 5706
Patent
active
055581870
ABSTRACT:
A brake apparatus for a rotating shaft. The apparatus comprises a fluid-tight housing in which is disposed a shaft rotational engagement gear having an exteriorly-accessible portion thereof rotatably engageable with a shaft. A plurality of compartments are formed by a plurality of walls within the housing, and the compartments are in fluid communication with each other through openable and closable valves. The housing is substantially filled with a fluid which is flowable through the valves in direct relation to the openness of the valves. A plurality of compartment-divider rotational gears are disposed inside the housing. These compartment-divider gears are rotatably engaged with the shaft rotational gear and are situated in cooperation with the walls forming the compartments to create at their respective sites restriction seals between the compartments. Upon activation, the brake apparatus operates through closure of the valves, thereby retarding the flow of fluid amongst the plurality of compartments and initially increasing fluid pressure. The initially increased fluid pressure slows the gears which, in turn, slow the velocity of a rotating shaft rotatably engaged with the rotational engagement gear and simultaneously gradually decreases fluid pressure.
REFERENCES:
patent: 1770796 (1930-07-01), Miles
patent: 2786553 (1957-03-01), Boone et al.
patent: 2933158 (1960-04-01), Pitts
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