Abstract: A variable displacement swash plate type compressor which incorporates a lubricant pump coupled to one end of the drive shaft of the compressor, wherein the lubricant pump provides positive lubricant flow within the compressor and facilitates the lubrication of compressor components.

Abstract: A variable displacement swash plate type compressor which incorporates a lubrication passage formed in a cylinder block and crankcase, and a spray nozzle disposed at the crankcase end of the lubrication passage. The lubrication passage provides fluid communication between an oil sump and the spray nozzle, and the spray nozzle causes lubricating oil to be efficiently distributed as a fine mist or spray to the crank chamber. The lubrication passage and spray nozzle maximize the flow of refrigerant gas and lubricating oil to the crank chamber under all operating conditions providing cooling and lubrication to the internal moving components within the crankcase.

Abstract: A variable displacement swash plate type compressor which incorporates a lubrication passage formed in a cylinder block and crankcase, and a spray nozzle disposed at the crankcase end of the lubrication passage. The lubrication passage provides fluid communication between an oil sump and the spray nozzle, and the spray nozzle causes lubricating oil to be efficiently distributed as a fine mist or spray to the crank chamber. The lubrication passage and spray nozzle maximize the flow of refrigerant gas and lubricating oil to the crank chamber under all operating conditions providing cooling and lubrication to the internal moving components within the crankcase.

Abstract: A variable displacement swash plate type compressor which incorporates an impeller attached to a drive shaft, and a plurality of blades for, efficiently directing lubricating oil to a shaft seal. The impeller provides a mist of lubricating oil to the crankcase, and the blades direct lubricating oil to a shaft seal. The impeller and blades maximize the distribution and flow of lubricating oil to the crank chamber under all operating conditions providing cooling and lubrication to the internal moving components within the crankcase.

Abstract: An electromagnetic clutch (110) for an air conditioning compressor includes a generally cylindrical pulley (111) rotatably mounted on a comressor housing (116) and having an annular friction surface (120a, 120b) in a cavity (120). A driven member (112) is mounted on a compressor shaft (113) and has a leg (118, 119) with an annular friction surface (118a, 118b, 119a, 119b) positioned radially adjacent the cavity friction surface to form an annular space (120c, 120f) therebetween. A quantity of flowable magnetic material (127) is provided in the annular space and a magnetic coil (124) is fixed on the housing adjacent thereto. When electrical power is applied to the magnetic coil (124), magnetic flux is generated in the annular space (120c, 120f) polarizing the magnetic material and frictionally coupling the friction surfaces to cause the pulley (111) to rotate the driven member (112).

Abstract: A rotary compressor having a housing with a pump cavity, an orbiting ring piston in the cavity, a cylindrical post carried by the housing within the orbiting ring, at least one pair of vanes engaging the orbiting ring to define pumping chambers in the cavity, a pair of primary fluid inlet passages communicating with the working pressure chamber during expansion of the pressure chamber, a pair of fluid outlet ports communicating with the working chambers as the volume of the working chambers contracts upon rotation of the orbiting ring piston, and a pair of secondary fluid inlet ports in parallel disposition with respect to the primary ports formed in a valve plate adjacent the orbiting ring piston whereby the orbiting ring piston registers with the ports and opens and closes the ports in synchronism with the opening end and closing of the main ports whereby the effective inlet flow capacity for the fluid into the expanding working chamber is increased.

Abstract: A clutch apparatus for a rotary compressor for an air conditioning system is disclosed including a crankshaft, an eccentric for engaging an orbiting ring within the compressor, and a plunger disposed within the crankshaft. The apparatus further includes a device for axially reciprocating the plunger in the crankshaft so as to cause engagement and disengagement of the plunger into the eccentric whereby the crankshaft transmits torque to the eccentric to rotate the orbiting ring within the compressor.

Abstract: A multiple stage rotary compressor having a housing with a pump cavity, an orbiting ring piston in the cavity, a cylindrical post carried by the housing within the orbiting ring, a pair of vanes engaging the outer surface of the orbiting ring to define a pair of primary pumping chambers in the cavity and a second pair of internal vanes contacting the inner surface of the orbiting ring to define a pair of secondary pumping chambers and a capacity controller adapted to selectively disable each of the outer vanes to establish differing compressor pump capacities depending upon the operating requirements of the compressor.

Abstract: A gas compressor includes a housing defining a compression chamber, a crankshaft having an eccentric surface radially offset from the axis of rotation of the crankshaft, an orbiting ring rotatably mounted on the eccentric for rotation about an axis offset from the shaft axis, a cylindrical post coaxial with the axis of the housing passages for carrying gas to and from the compression chamber, vanes movable radially with respect to the orbiting ring, and pressure sensitive valves that open exhaust passages from the compression chamber. The orbiting ring rotates in continual contact with the inner surface of the housing and the outer surface of the cylindrical post. Compression occurs within a first stage space and a second stage space, each space divided into compression chambers by the sliding vanes and contact between the ring and post or between the ring and housing.

Abstract: A gas compressor includes a housing defining a compression chamber, a crankshaft having an eccentric surface radially offset from the axis of rotation of the crankshaft, an orbiting ring rotatably mounted on the eccentric for rotation about an axis offset from the shaft axis, a cylindrical post coaxial with the axis of the housing passages for carrying gas to and from the compression chamber, vanes movable radially with respect to the orbiting ring, and pressure sensitive valves that open exhaust passages from the compression chamber. The orbiting ring rotates in continual contact with the inner surface of the housing and the outer surface of the cylindrical post. Compression occurs within a first stage space and a second stage space, each space divided into compression chambers by the sliding vanes and contact between the ring and post or between the ring and housing.

Abstract: A gas compressor includes a housing defining a compression chamber, a crankshaft having an eccentric surface radially offset from the axis of rotation of the crankshaft, an orbiting ring rotatably mounted on the eccentric for rotation about an axis offset from the shaft axis, a cylindrical post coaxial with the axis of the housing passages for carrying gas to and from the compression chamber, vanes movable radially with respect to the orbiting ring, and pressure sensitive valves that open exhaust passages from the compression chamber. The orbiting ring rotates in continual contact with the inner surface of the housing and the outer surface of the cylindrical post. Compression occurs within a first stage space and a second stage space, each space divided into compression chambers by the sliding vanes and contact between the ring and post or between the ring and housing.

Abstract: An automotive accessory clutch driven by a pulley engaged by a rubber belt driven from the engine includes an electrical coil which when energized causes a friction plate to be drawn into engagement with the pulley and to rotate lever arms about pivots which produce tangentially directed forces on brake assemblies that pivot an additional friction surface into engagement with other surfaces of the driven pulley. The connection between the pulley and the accessory driven from the engine is selectively connected and disconnected as the coil is electrically energized and deenergized.

Abstract: A power steering pump having a cam with an internal cam surface defining pumping arcs, a rotor in said cam, pumping elements preferably in the form of slippers carried by the periphery of the rotor in sliding engagement with the pumping arcs, flow control valve means having a movable valve element responsive to both static pressure and velocity pressure of the displaced fluid on the high pressure side of the pump wherein provision is made for decreasing the volume of fluid delivered by the pump at high pressure upon an increase in the speed of the rotor, and means for equalizing the pressure between the volume of fluid between two adjacent pumping elements located at a high pressure outlet port and a corresponding volume of fluid between two other adjacent slippers located at a low pressure inlet port as the pumping elements pass through their respective pump cycles.

Abstract: A power steering pump having a cam with an internal cam surface defining pumping arcs, a rotor in said cam, pumping elements preferably in the form of slippers carried by the periphery of the rotor in sliding engagement with the pumping arcs, flow control valve means having a movable valve element responsive to both static pressure and velocity pressure of the displaced fluid on the high pressure side of the pump wherein provision is made for decreasing the volume of fluid delivered by the pump at high pressure upon an increase in the speed of the rotor, and means for equalizing the pressure between the volume of fluid between two adjacent pumping elements located at a high pressure outlet port and a corresponding volume of fluid between two other adjacent slippers located at a low pressure inlet port as the pumping elements pass through their respective pump cycles.

Abstract: A positive displacement pump comprising a pump housing, a pump rotor disposed in the housing together with pressure plates on either side of the rotor arranged in a compact assembly, an end plate in the assembly held fast within the pump housing in concentric disposition with respect to the pump rotor, the housing and the innermost pressure plate defining a high pressure cavity within which is disposed a flat Belleville spring which preloads the plates and the rotor thereby pressure sealing the pump elements, a drive shaft sealed by a sealing element located in a lubrication oil cavity which communicates through an internal lube pressure passage with the inlet side of the pump, a fluid reservoir surrounding the pump and the valve assembly, the interior of the reservoir being semi-isolated from the low pressure lubrication oil cavity whereby the volume of metal required to form the housing and the axial dimensions of the pump assembly are reduced to minimum values.