Abstract:
Described is a piston for a hydrostatic axial-piston machine, the surface (12) of the piston body (15) having, at the front end (Y) where it joins the end face (11) of the piston and/or at the rear end (X) near the piston head, a chamfer (16; 18; 19; 21) with a continuously changing radius of curvature.
Abstract:
An engine/pump having a crank shaft (1) with a shaft axis (1A) and a crank axis (2A) oblique to the shaft axis (1A) which intersect with each other at X, piston/cylinder assemblies (6, 12) to rotate about the shaft axis (1A) and having a reciprocal axis between its top dead centre and bottom dead centre, the reciprocal axis midway between TDC and BDC being normal to a line projected from X, piston control means (3) to rotate about said crank axis (2A), connection means for each piston (6) from said piston control means (3), to allow reciprocal movement of the pistons (6) within the cylinders (12) as the assemblies (6, 12) rotate about the shaft axis (1A), cylinder head (5) which holds the cylinders (12) in an array, the head (5) including at least one port per cylinder, and ported means (13) relative to which said cylinder head (5) moves sealably to allow timed to the reciprocal movement of each piston (6) in its cylinder (12) and the rotational position, the opening and closing of each cylinder (12). Each cylinder (12) is indexed at a predetermined rate to the relative rotation of the crankshaft (1) through gearing (10). An alternative embodiment of the invention is also disclosed as shown in the figures.
Abstract:
A slant plate type compressor with a variable displacement mechanism is disclosed. The compressor includes a compressor housing having a cylinder block provided with a plurality of cylinders and a crank chamber. A piston is slidably fitted within each of the cylinders and is reciprocated by a drive mechanism. The drive mechanism includes a drive shaft rotatably supported by the compressor housing, a cam rotor fixed on the drive shaft, and a slant plate having a surface with an adjustable incline angle. The incline angle is varied in accordance with the pressure in the crank chamber. A wobble plate is disposed adjacent the slant plate to convert the rotating motion of the drive shaft, the rotor, and the slant plate into the reciprocating motion of the pistons which are coupled to the wobble plate through corresponding connecting rods. A hinged joint mechanism hingedly connects an arm portion of the slant plate to an arm portion of the rotor to permit variations in the incline angle of the slant plate. An abrasion preventing mechanism formed of a metal is disposed between the arm portion of the cam rotor and the arm portion of the slant plate to effectively reduce abnormal abrasion on the frictional surface of the arm portion of the rotor.
Abstract:
A compressor assembly (10) is disclosed including a compressor mechanism (44) resiliently mounted within a hermetically sealed housing (12). The compressor mechanism includes a crankcase (46) having a radially extending mounting flange portion (52), which is resiliently connected to the housing sidewall (14) at a plurality of circumferentially spaced locations by a plurality of mounting assemblies (54). Each mounting assembly comprises a rubber bushing (276) received within a hole (278) in the mounting flange, and a threaded stud (266) that extends through a hole in the bushing and engages a threaded hole (264) in a steel block (262) welded to the housing sidewall above the mounting flange. A washer (272) and retaining nut (274) on the bottom of the threaded stud suspendingly support the mounting flange. In this manner, only a peripheral portion of the washer contacts the mounting flange circumjacent the hole therein, thereby minimizing noise transmission to the housing. Lateral movement of the compressor mechanism is absorbed by the bushing.