Patent ID: 7185625
Filing Date: 2007-03-06
Classification: F01C

Abstract:
1. A rotary piston power system, comprising: a housing having a drum-shaped base and a cover rotatably disposed on the base, the housing defining a cavity; a separator wall disposed within the housing, the separator wall defining a plurality of symmetrically disposed piston compartments; a rotary piston mounted for rotation within each of the piston compartments, each of the pistons having a plurality of radially disposed slots and vane-receiving recesses defined therein, each of the pistons extending between the base and the separator wall with a close tolerance therebetween; a plurality of radially disposed vanes extending from the cover into the cavity, adjacent pairs of the vanes defining fluid chambers therebetween, the vanes extending through the plurality of radially disposed slots into the vane-receiving recesses for coaction between the pistons and the cover when the cover rotates, the vanes and the slots being angularly spaced in a ratio so that the pistons have an angular velocity twice the angular velocity of the cover; a plurality of high pressure ports and a plurality of low pressure ports symmetrically disposed in the drum-shaped base; and means extending from the cover for attachment to a load when the system is configured as a rotary engine and for attachment to a prime mover when the system is configured as a compressor.