Patent ID: 7096836
Filing Date: 2006-08-29
Classification: F01L

Abstract:
1. An internal combustion engine assembly for easing valve lash adjustment, the engine assembly comprising an adjustable rocker arm assembly, an engine head, a camshaft, a pushrod, and a valve, the camshaft being cooperatively associated with the pushrod for imparting motion thereto, the engine head comprising a female engine mount, the female engine mount having internal mount threads, the adjustable rocker arm assembly comprising a rocker arm, a cross shaft assembly, a tubular pedestal mount, and a stud assembly, the stud assembly comprising a stud and a retaining nut, the stud comprising an engine end, a stud nut end, external stud threads, and a stud axis, the retaining nut comprising internal nut threads, the engine end being threadably received in the female engine mount, the stud axis thus being fixed, the rocker arm comprising a rod end, a valve end, a pedestal-stud assembly-receiving gap, and a shaft-receiving bore, the shaft-receiving bore having a shaft axis, the cross shaft assembly comprising a cross shaft and bearing means, the cross shaft comprising a pedestal-receiving bore and lock means, the pedestal-receiving bore comprising left-handed internal bore threads and a bore axis, the tubular pedestal mount comprising a head end, a pedestal nut end, left-handed external pedestal threads, and a stud-receiving bore, the stud-receiving bore having a pedestal axis, the stud-receiving bore rotatably receiving the stud, the tubular pedestal mount thus being adjustably mounted upon the stud, the pedestal axis thus being fixed, the head end engaging the engine head adjacent the female engine mount at a pedestal-head interface, the fixed stud axis and the fixed pedestal axis being collinear thus forming a fixed mount axis, the shaft-receiving bore receiving the cross shaft, the cross shaft thus being mounted within the rocker arm, the shaft axis thus forming a pivot axis, the bearing means enabling the rocker arm to pivot about the pivot axis, the pedestal-receiving bore threadably receiving the tubular pedestal mount, the cross shaft assembly and the rocker arm thus being adjustably mounted upon the tubular pedestal mount, the bore axis and the pivot axis thus each being fixed, the fixed mount axis being orthogonal to the fixed pivot axis and collinear with the fixed bore axis, the retaining nut being threadably received upon the stud nut end, the retaining nut engaging the pedestal nut end for selectively securing the adjustable rocker arm assembly to the engine head, the push rod being cooperatively associated with the rod end for imparting motion thereto, the valve end being cooperatively associated with the valve for imparting motion thereto, the engine assembly being constructed from thermally expandable, wearable materials, the engine assembly thus requiring periodic valve lash adjustment, the retaining nut being selectively disengageable from the pedestal nut end for selectively releasing the tubular pedestal mount for selective rotational movement, the tubular pedestal mount being rotatable about the fixed mount axis for providing eased valve lash adjustment.