Patent Number: 6,296,462

Title: Rotary positive-displacement fluid machines

Abstract: A rotary positive-displacement fluid machine comprising a rotor eccentrically mounted in a casing for rotation about an axis, the rotor having recesses respectively receiving vanes which oscillate in the recesses as the rotor rotates. Each vane is connected by a crank to an arm for oscillation about a vane axis which is located inwards of the outer extremity of the tip which itself has a clearance fit within the casing. The tip of each vane is preferably curved about an axis parallel to the respective vane axis. The machine may be connected to the crankshaft of an internal combustion engine and driven by the pressure difference between the ambient air and that at the engine inlet manifold. Alternatively, the device may be operated as a heat pump.

Inventors: Driver; Ronald William (Lancashire, GB), Davidson; David Peter (Leicestershire, GB)

Assignee: Driver Technology Limited

International Classification: F01C 1/00 (20060101); F01C 1/44 (20060101); F01C 001/44 ()

Expiration Date: 10/02/2018