Cylindrical tappet

  • US 4,739,675 A
  • Filed: 10/25/1983
  • Issued: 04/26/1988
  • Est. Priority Date: 11/14/1980
  • Status: Expired due to Fees
First Claim
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1. A tappet for transmitting motion from a rotatable cam to a valve of an internal combustion engine, said tappet being slidably supported for reciprocation along a first axis in a cylindrical bore of the engine,said tappet comprising a circular cylindrical body portion adapted to be slidably supported in the bore of the engine,a cam follower portion on said tappet having a cam engaging face comprising a segment of a circular cylinder the axis of generation of which extends parallel to the axis of rotation of said engine cam and the radius of generation of which is substantially greater than the radius of generation of the circular body portion of said tappet, said cam follower portion being contained entirely within the circular cross section of the body portion of said tappet so as to be reciprocable within the bore in said engine, andpivot means supporting the cam follower portion of said tappet for rotation relative to the body portion thereof about an axis extending at a right angle to the axis of reciprocation of said tappet and lying in a plane extending at a right angle to the axis of generation of the cam engaging face on the cam follower portion of said tappet.

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