Patent ID: 7987766

Claim:
A hydraulic cylinder apparatus, comprising: a crescent shaped case having a top, a bottom, a front, a back, and a length, the front of the case comprising a case convex, the back of the case comprising a case concavity, the case convex and the case concavity joined by two spaced apart parallel flat case sides, a case radius between each case side and the case concavity, an interior of the case comprising a well, the well terminating at a case angle terminating in a case end piece at the case top, the case end piece topped by a case lip; a plurality of spaced apart case ring grooves disposed in the case end piece; a case ring disposed within each case ring groove; a mount on the bottom of the case; a plurality of upper hydraulic ports within the case, the upper ports disposed adjacent to and below the case angle; a plurality of lower hydraulic ports disposed proximal to the case bottom; a crescent shaped piston slidingly disposed within the case, the piston comprising a piston top, piston bottom, and a length therebetween, a piston concavity at a back and a piston convex at a front of the piston, a pair of parallel spaced apart flat piston sides connecting the piston convex and the piston concavity, a piston radius between each piston side and piston concavity, the bottom of the piston terminating in a piston flare angle terminating in a piston flare; a plurality of spaced apart piston ring grooves disposed in the piston flare; a piston ring disposed in each piston ring groove; a mount disposed at the piston top.