Walking beam rocker arm

Claim 1

IN A VALVE OPERATING ASSEMBLY FOR USE WITH AN AUTOMOBILE ENGINE, (A) A VALVE OPERATING ROCKER ARM HAVING (1) A FIRST ARCUATE BEARING SURFACE, (2) A VALVE OPERATING PORTION FOR OPERATIVELY COUPLING WITH A VALVE TO OPERATE THE LATTER UPON ROCKING OF SAID ARM, AND (3) AN ACTUATOR ENGAGING PORTION FOR OPERATIVELY COUPLING WITH A RECIPROCATING ACTUATOR TO ROCK SAIR ARM, (B) MOUNTING MEANS HAVING (1) A SECOND ARCUATE BEARING SURFACE SPACED FROM SAID FIRST BEARING SURFACE, (C) MEANS COOPERATING WITH SAID FIRST AND SECOND BEARING SURFACES TO COMPLETE A SCOTCH YOKE TYPE ARTICULATION THEREBETWEEN COMPRISING (1) A SPACER BETWEEN SAID FIRST AND SECOND BEARING SURFACES AND HAVING (A) A THIRD ARCUATE BEARING SURFACE CONFORMING TO AND SEATED AGAINST SAID FIRST BEARING SURFACE IN ROCKING SLIDING RELATIONSHIP, AND (B) A FOURTH ARCUATE BEARING SURACE CONFORMING TO AND SEATED AGAINST SAID SECOND ING BEARING IN ROCKING SLIDING RELATIONSHIP (C) THE CENTERS OF CURVATURE OF SAID THIRD AND FOURTH BEARING SURFACES BEING ECCENTRIC WITH RESPECT TO EACH OTHER TO EFFECT TRANSLATORY MOVEMENT OF SAID ROCKER ARM WITH RESPECT TO THE CENTER OF CURVATURE OF SAID FOURTH BEARING SURFACE UPON ROCKING OF SAID ROCKER ARM ON SAID THIRD SURFACE.