Reaction disc housing and brake servo unit comprising same
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Feb 11, 2003
Grant Date -
Sep 12, 2002
app pub date -
Jun 20, 2001
filing date -
May 19, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
This invention relates to a housing for receiving a reaction disk in a pneumatic servomotor. The housing and reaction disk co-operate to resist too fast a forward travel of a piston when the brake is actuated and thereby avoid an undesired reopening of a passage connecting a front chamber with a rear chamber in a brake booster during a brake application. The reaction disk (39) is located in an inner space of the housing (47) that has a greater size than the volume of the disk (39). The disk (39) is initially deformed to completely fill the housing (47) by an input force corresponding to a desired brake application to limit the forward speed of the pneumatic piston and only thereafter as a reaction force develops during the brake application, does the reaction force balance the input force applied to the disk (39) during a brake application.
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