Class 418/25 - Positively biased in opposite directions

Subclass of Class 418 - Rotary expansible chamber devices
Definition: Apparatus in which either the cylinder or portion thereof
No. of patents: 4
Last issue date: 06/11/2002

Number	Title	Issue Date
6402487	Control system for variable exhaust nozzle on gas turbine engines The present invention relates to a system that provides independently operated or controlled circuits in a single device. An exemplary application adapts a variable displacement roller pump into an engine geometry control system that uses one circuit of t...	06/11/2002
6398528	Dual lobe, split ring, variable roller vane pump A dual lobe, split ring, variable displacement roller vane pump is provided for supplying an aircraft engine varying amount of fuel. In a preferred application, the pump is used with a gas turbine engine. The pump includes a housing having an inlet and an...	06/04/2002
4659297	Variable capacity vane motor having rotatable and stationary cam rings A vane motor is disclosed in which the volumetric displacement, torque, or speed are continuously adjustable. The vane motor includes a housing having a rotor and cam ring disposed axially around the rotor. The rotor includes vanes in radial slots which d...	04/21/1987
4487559	Hydraulic machine with retractable partitions and variable cubic capacity A hydraulic motor of variable cubic capacity with retractable partitions sed in radial grooves in a rotor. The partitions are each integral with a guide pin trapped in an endless cam groove of approximately ovoid shape in a surface stator. The partitions...	12/11/1984

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