One-piece push rod having enlarged spherical seat

  • US 5,027,763 A
  • Filed: 12/05/1989
  • Issued: 07/02/1991
  • Est. Priority Date: 12/05/1989
  • Status: Expired due to Term
First Claim
Patent Images

1. In an internal combustion engine having a push rod between a rocker assembly and a cam follower assembly in which said push rod slides in a slot in a guide plate, the improvement wherein:

  • a single piece of metal in the form of an elongated hollow tube having a middle portion, first and second end portions and rounded seats at the tips thereof, said middle portion having a larger outer diameter than the end portions, said tube having a substantially constant wall thickness throughout the length of the tube and the tips thereon, and at least one of said seats having a rounded seat surface extending through an angle in excess of 180 degrees, said at least one seat being in direct engagement with said rocker assembly.

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