Abstract: A steam turbomachine includes a housing having a shell that defines a steam flow path, a first stage bowl cavity formed in the shell, a first stage including a plurality of first stage nozzles and a plurality of first stage buckets arranged downstream of the plurality of first stage nozzles, a second stage including a plurality of second stage nozzles and a plurality of second stage buckets arranged downstream of the plurality of second stage nozzles. The second stage is arranged downstream of the first stage along the steam flow path. A bypass circuit is formed in the shell. The bypass circuit extends from a first end fluidically connected to the first stage bowl cavity to a second end fluidically exposed to the steam flow path upstream of the second stage. A valve element is positioned in, and selectively blocks, the bypass circuit.

Abstract: The subject invention provides a pivot assembly for rotatably connecting a rotor to a swash plate in a variable displacement compressor. The rotor and swash plate each having pivot arms supporting pivot pins. A hinge is mounted to both of the pivot pins for operatively connecting the rotor to the swash plate. The hinge includes a first mounting portion receiving one of the pins and a second mounting portion receiving the other pin with a central planar region disposed between the first and second mounting portions. A tab extends from the central planar region toward each of the first and second mounting portions to engage the pins and fixedly secure the pins within their respective mounting portions. The pins therefore remain mounted to the hinge during an operation of the variable displacement compressor.

Abstract: An automotive air conditioning compressor with a capacity control valve improves oil retention in the crankcase with a crankcase to suction chamber passage that is formed through the central shaft. The passage inlet opening in the shaft is located within a central chamber inset into the cylinder block, and is thereby sheltered from the main chamber of the crankcase, although still open to the crankcase. So sheltering the inlet of the shaft passage between crankcase and suction chamber isolates the inlet from the greater turbulence and higher velocity gradients within main chamber of the crankcase. Less oil is thus forced through the passage and back out of the crankcase.

Abstract: The subject invention provides a pivot assembly for rotatably connecting a rotor to a swash plate in a variable displacement compressor. The rotor and swash plate each having pivot arms supporting pivot pins. A hinge is mounted to both of the pivot pins for operatively connecting the rotor to the swash plate. The hinge includes a first mounting portion receiving one of the pins and a second mounting portion receiving the other pin with a central planar region disposed between the first and second mounting portions. A tab extends from the central planar region toward each of the first and second mounting portions to engage the pins and fixedly secure the pins within their respective mounting portions. The pins therefore remain mounted to the hinge during an operation of the variable displacement compressor.

Abstract: An automotive air conditioning compressor with a capacity control valve improves oil retention in the crankcase with a crankcase to suction chamber passage that is formed through the central shaft. The passage inlet opening in the shaft is located within a central chamber inset into the cylinder block, and is thereby sheltered from the main chamber of the crankcase, although still open to the crankcase. So sheltering the inlet of the shaft passage between crankcase and suction chamber isolates the inlet from the greater turbulence and higher velocity gradients within main chamber of the crankcase. Less oil is thus forced through the passage and back out of the crankcase.

Abstract: A piston (40) for use in a compressor housing (10) having a cylindrical inner surface (12) with an anti rotation wing (42) of improved design. The outer surface of the piston anti rotation wing (42) includes a pair of spaced, semi cylindrical pads (48), each with a radius substantially equal to the compressor housing inner surface (12). Each pad (48) is located on the anti rotation wing (42) such that, when the winG (42) is centered, the inner edge of each pad (48) is radially spaced slightly from the housing inner surface (12), and each pad is eccentric relative to the center of the compressor housing surface (12). When the anti rotation wing (42) turns in either direction, one pad (48) or the other contacts the housing inner surface (12) concentrically, making continuous supporting contact.