SEALING DEVICE FOR HYDRAULIC BRAKE LEVER ASSEMBLY
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United States of America Patent
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app pub date -
Oct 8, 2012
filing date -
Aug 24, 2010
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Abandoned
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Abstract
A sealing device for hydraulic brake lever assembly includes a seat having an oil tank defined therein for receiving oil. The oil tank has a connecting hole defined therein. The oil tank is conically tapered toward the bottom thereof. An elastomer is sealingly received in the oil tank. The elastomer has an U-shaped portion formed therein for providing a resilient force. The elastomer has a movable portion formed therein. A piston assembly is received in the oil tank and connected to the elastomer for actuating the elastomer. At least one oil seal is sleeved on the driving shank for preventing oil leakage. When braking, the piston assembly actuates the U-shaped portion to deform. The movable portion is pushed to pressing oil into the connecting hole. When an oil pressure is decreased, the U-shaped portion restores. The movable portion is pulled backward by the resilient force.
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