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Engine valve lift mechanism

  • US 5,934,232 A
  • Filed: 06/12/1998
  • Issued: 08/10/1999
  • Est. Priority Date: 06/12/1998
  • Status: Expired due to Fees
First Claim
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1. Valve lift mechanism for an engine, said mechanism including support means, a camshaft carried by the support means and having a pair of spaced cams, a valve lifter including a cam follower having a cylindrical body with first and second annular ends and an outer cylinder surface reciprocably carried in a cylindrical bore of the support means, the first annular end including a pair of laterally spaced first cam engaging portions engaging the cams, and guide means for limiting rotation of the body around an axis of reciprocation, the guide means characterized by:

  • an axially extending recess in the outer cylinder surface of the body; and

    an anti-rotation guide having a mounting portion mounted to said support externally of said bore by a through fastener holding a spring washer against the mounting portion for allowing limited pivotal motion of the mounting portion relative to the support, and a leg extending from the mounting portion axially within said bore and into said recess of the body;

    wherein said bore is void of any axially extending guide recess, whereby limited lateral motion of the leg is permitted for self-centering of said valve lifter in said bore and sufficient frictional resistance is provided to prevent movement of the valve lifter from an attained self-centered position.

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