Motors: expansible chamber type – Working member position feedback to motive fluid control – Follower type
Patent
1990-08-15
1992-06-16
Kwon, John T.
Motors: expansible chamber type
Working member position feedback to motive fluid control
Follower type
913692, 913693, 91376R, 92 84, F15B 910
Patent
active
051216736
ABSTRACT:
Apparatus for preventing percussion beats in a brake booster is disclosed. The apparatus prevents percussion beats from occurring as a result of an abutment of a valve plunger, which forms part of a valve mechanism, against a key member which is used to prevent the valve plunger from being withdrawn from the valve body. An elastic member is formed on at least one of the key member and the valve plunger. The key member and the valve plunger are formed with abutting surfaces thereon which are adapted to abut against each other. A normal spacing between the abutting surfaces is chosen to be greater than a spacing as measured between the elastic member and the other member which is abutted by the elastic member. In this manner, the occurrence of percussion beats as the key member abuts against the valve plunger is prevented while also preventing a reduction in the durability of the elastic member.
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Jidosha Kiki Co. Ltd.
Kwon John T.
Mattingly Todd
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