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US 8,573,168 B2Granted
Hydraulic pressure valve apparatus
AssigneeHyundai Motor Company
InventorsJei Choon Yang, Chang Ho Yang, Byong Young Choi, Young Hong Kwak, Jin Kook Kong, Soo Hyung Woo
Life of this patent
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Abstract
A hydraulic pressure valve apparatus includes a housing of which a first chamber and a second chamber are formed therein, wherein a diameter of the second chamber is bigger than that of the first chamber, a first piston disposed within the first chamber, an elastic portion disposed within the first chamber for elastically supporting the first piston and a second piston disposed within the second chamber and connected to a valve.
Claims17
A hydraulic pressure valve apparatus comprising:
- a housing including a first chamber and a second chamber formed therein, wherein a diameter of the second chamber is bigger than that of the first chamber;
- a first piston disposed within the first chamber;
- an elastic portion disposed within the first chamber for elastically supporting the first piston;
- and
- a second piston disposed within the second chamber and connected to a valve;
- wherein the hydraulic pressure valve apparatus further comprises a movement limiting portion limiting movement of the first piston;
- and
- wherein the movement limiting portion comprises:
- a movement limiting hole formed in the first piston;
- and
- a movement limiting pin connected to the housing and inserted into the movement limiting hole.
8 more elements
Dependencies are inferred from the claim text.