Brake cylinder unit
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 9, 2004
Grant Date -
Oct 23, 2003
app pub date -
Apr 18, 2002
filing date -
Apr 18, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
To provide a brake cylinder unit wherein both the normal brake and the spring brake that is used as a parking brake, etc., can act, and in addition wherein it is possible to shorten the axial direction length. In a brake cylinder unit (1) wherein both the normal-service brake means (2) and the spring brake means (3) can act, there is provided a clutch means (4) that links the rod (111) and the second piston (21) when the pressure fluid ceases to act on the second action chamber (24) of the spring brake means (3), and the first piston (21) starts to move towards to the rod (111). This clutch means (4) comprises a screw (31) that is provided on the rod (111), a nut member (32) that is provided on the second piston (21) such that it can rotate, and a stop means (33) that stops the rotation of the nut member (32) when the second piston (21) starts to move towards the rod (111).
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