Negative pressure type booster arrangement
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United States of America Patent
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-
Sep 4, 1984
Grant Date -
N/A
app pub date -
Sep 23, 1981
filing date -
Sep 30, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A negative pressure type booster arrangement comprises a pair of booster shells divided by a booster piston disposed therein for reciprocating movement into a constantly negative pressure chamber and a variable pressure chamber. The second chamber is always put in interchangeable communication with the first chamber via a control valve mechanism. An input rod is retractively connected to the booster piston, and is also connected to the valve control mechanism for permitting the booster piston to follow advancement of the input rod due to a difference in air pressure between both chambers. An input transmitting lever is mounted on the rear end of the input rod. A first arm is provided for supporting an operating lever extending successively from the booster shells and for pivotally supporting one end of the input transmitting lever, and a second arm is provided for supporting an operating wire.
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