Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Katsunori Nakamura0
Noriaki Fujii0
Mineko Nakamura0
Date of Patent
March 11, 2008
0Patent Application Number
113996090
Date Filed
April 7, 2006
0Patent Primary Examiner
Patent abstract
A hydraulic tappet including: a bottomed cylindrical body; a plunger slidably fitted in the body; a check valve mounted at one end of the plunger so that the check valve is interposed between a high-pressure chamber and an oil chamber, the high-pressure chamber being formed between a closed end of the body and one end of the plunger, the oil chamber being formed within the plunger; and a return spring mounted between the body and the plunger to bias the plunger in a direction to increase the volume of the high-pressure chamber. The return spring is disposed outwardly of the body. Thus, it is possible to decrease the volume of the high-pressure chamber to provide a reduction in size of the hydraulic tappet.
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