Patent ID: 6896495
Filing Date: 2005-05-24
Classification: F04B,F16K,Y10T

Abstract:
1. A cylinder head in combination with a valve plate assembly: comprising: a cylinder head having a flange face, a suction port in fluid communication with a source of a compressible gas, a suction plenum in fluid communication with the suction port, a plurality of cylinder head bores in fluid communication with the suction plenum, the bores having a top surface substantially coplanar with the flange face, a discharge plenum, a discharge port in fluid communication with the discharge plenum, the cylinder head characterized by a plurality of ribs extending into each bore, and a circumferential surface adjacent to each bore, the circumferential surface being within the discharge plenum below the plane formed by the flange face; and a valve plate assembly having a perimeter corresponding substantially to a perimeter of the cylinder head, the valve plate assembly further comprising wherein when the valve plate assembly is assembled to the cylinder head, the cylinder head gasket is adjacent the flange face of the cylinder head and between the cylinder head and the valve plate, and the radii of the rings of the discharge valve retainer are below the plane formed by the flange face of the cylinder head and adjacent the circumferential surface in the cylinder head.