Abstract: A rocker arm assembly having a main body with side walls and a push rod contacting portion spaced away from a valve stem contacting portion is disclosed. The valve stem contacting portion further includes a spring clip mounted thereon. The arms of the spring clip cooperate to form a channel for providing lateral guidance between the rocker arm and a valve stem.

Abstract: The present invention is directed to a rocker arm having a pivoting clevis mounted to a second end of the rocker arm that engages a valve stem or a bridge that activates dual valves. The clevis has a substantially flat contacting surface and an internal recess created by two upwardly extending walls and an upwardly facing cam surface or receiving the second end of the rocker arm. The clevis is attached to the second end of the rocker arm by an attachment pin that extends through the upwardly extending walls of the clevis and through the second end of the rocker arm. The second end of the rocker arm has a downwardly extending portion that mates with the upwardly facing cam surface of the clevis to allow the clevis to pivot about the attachment pin.

Abstract: A rocker arm assembly for an internal combustion engine includes a central mounting shaft and a rocker arm rotatably mounted to the central shaft wherein the rocker arm has a generally planar main body with a valve contacting end and a push rod contacting end. A convex surface is formed on a lower edge of a valve contacting surface and the push rod contacting end includes a generally semi-spherical recess that creates generally semi-spherical outer projections on the sides of the rocker arm main body. The central mounting shaft according to one embodiment of the present invention is a generally hollow, tubular shaft having spaced apart lubrication apertures for providing lubricant to each rocker arm. A second embodiment of the present invention has a central mounting shaft that includes a plurality of relatively short, hardened shafts connected together at respective adjoining ends by a spacer sleeve to provide a rocker arm assembly having greater stiffness.