Parking brake apparatus
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United States of America Patent
Stats
-
Nov 1, 2022
Grant Date -
Aug 20, 2020
app pub date -
Feb 10, 2020
filing date -
Feb 15, 2019
priority date (Note) -
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status (Latency Note)
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Abstract
A parking brake apparatus may include: a driving part; a driving gear rotatably connected to the driving part; a gear shaft engaged with the driving gear so as to be rotated by the driving gear; a pair of pistons disposed on both sides of the gear shaft and connected to brake shoes, respectively; a pair of nuts disposed in the respective pistons, and screwed to the gear shaft; an elastic member installed between the piston and the nut so as to pressure the nut toward the brake shoe; a holder installed in the piston so as to support the elastic member; and a constraint ring installed in the piston so as to constrain the holder.
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