Patent ID: 8621991

Claim:
A pistol grip spring compressor system for a valve spring unit at an engine block assembly, each valve spring unit includes a plurality of coils, a valve spring retainer positioned at one end of the valve spring, and keepers positioned within the valve spring and adjacent to the valve spring retainer, the pistol grip spring compressor system comprising: a spring lock unit, the spring lock unit includes a plurality of jhooks, each jhook having a flanged portion, the flange portion is configured to secure the pistol grip spring compressor system to a coil of the valve spring provided by the valve spring unit from an internal combustion engine block; an actuator assembly, the spring lock unit anchored to the actuator assembly, the actuator assembly includes a frame element, an actuator rod positioned through the frame element, a grip handle assembly, the grip handle assembly coupled to and extending outwardly from the frame element, the grip handle assembly including a fixed handle and a pivot handle pivotally coupled to the fixed handle, the pivot handle and fixed handle cooperate to drive the actuator rod along the frame element, the grip handle assembly further including a bias locking bar coupled to the actuator rod, the bias locking bar is rendered to lock the actuator rod in an advance position or rendered to reverse-release the actuator rod in an opposing direction; and an anvil module, the anvil module coupled to a driver end of the actuator rod, the anvil module includes an anvil coupled to the driver end and a rotational assembly coupled to and positioned between the anvil and the driver end, the anvil is configured to compress against a valve spring retainer of the valve spring unit, via the actuator rod, the anvil includes a plurality of valve projection elements, the plurality of projection elements are configured to annularly contact against the valve spring retainer, about the valve stem aperture that is concentrically defined by the retainer, the plurality of projection elements collectively form a holding container that define a plurality of collection gaps, the projection elements rotate relative to the adjacent plurality of jhooks to facilitate retrieval of the keepers from between the collection gap, whereby, the spring lock unit secures the valve spring coil in a fixed position relative to the frame element to permit the anvil, positioned against the valve spring retainer, to maintain compression on the valve spring while the valve spring unit is separated from the internal combustion engine block.