Automatic valve clearance eliminator

Claim 1

AN AUTOMATIC VALVE CLEARANCE ELIMINATOR COMPRISING A PAIR OF RELATIVELY SLIDABLE TELESCOPING PARTS HAVING ALIGNED PUSHROD RECEIVING CONNECTIONS THEREON RESPECTIVELY ADAPTED FOR RIGIDLY CONNECTING THEM RESPECTIVELY WITH TWO ALIGNED SECTIONS OF A PUSHROD BETWEEN WHICH THE ELIMINATOR IS ADAPTED TO BE INTERPOSED, SUCH PARTS INCLUDING COOPERATING GUIDE AND SLIDE MEANS AND STOP MEANS LIMITING THE RELATIVE TELESCOPING MOVEMENT OF SAID PARTS AND PREVENTING THEM FROM DISENGAGING EACH OTHER, ONE OF SAID PARTS INCLUDING A CYLINDER, UNI-DIRECTIONAL MOTIONRETARDING MEANS ON SAID PARTS RESTRICTING THEM TO EXTREMELY SLOW MOVEMENT IN A FIRST DIRECTION TO MOVE SAID PUSHROD CONNECTIONS CLOSER TOGETHER WHILE PERMITTING THEM TO MOVE RAPIDLY IN THE OPPOSITE DIRECTION RELATIVE TO ONE ANOTHER, AND INCLUDING A PISTON IN SAID CYLINDER SEPARATE FROM SAID SLIDE BUT POSITIONED IN FORCE TRANSMITTING RELATION THERETO TO BE URGED THEREBY IN SAID FIRST DIRECTION, AND MEANS BIASING SAID PARTS TOWARD MOVEMENT IN SAID OPPOSITE DIRECTION RELATIVE TO ONE ANOTHER, SAID GUIDE AND SLIDE MEANS HAVING THEREON SPACED PAIRS OF COOPERATING BEARING AREAS RESISTING MISALIGNMENT OF SAID PARTS IN ANY ONE DIRECTION, SAID PAIRS HAVING SURFACES IN ENGAGEMENT AT ANY ONE TIME SPACED LONGITUDINALLY OF THE RELATIVE SLIDING MOVEMENT OF SAID PARTS AND SAID PAIRS BEING SPACED ALSO IN A DIRECTION NORMAL TO THE DIRECTION OF SAID RELATIVE SLIDING MOVEMENT, THE FIRST-MENTIONED SPACING BEING AT LEAST AS GREAT AS THE LAST-MENTIONED SPACING.