Abstract: A rotary fluid motor or pump device having opposing cam surfaces and a rotor with vanes shiftable within vane slots of the rotor and riding on the cam surfaces is disclosed. The device includes at least eight vane members circumferentially spaced about the rotor and cam surfaces having diametrically opposed slopes extending over arcs of at least about 130.degree., with means for the entrance or exit of fluid along the entire length of each such slope of 130.degree. or more. At least six chamber spaces between vanes of the device always function to receive fluid and at least six such chamber spaces always function to exit fluid from the device, regardless of the rotary orientation of the rotor. A device for hydraulically assisting the steering vehicles is provided wherein rotary valve elements and rotary motor elements are concentrically mounted about a steering shaft.

Abstract: A rotary fluid motor or pump device having opposing cam surfaces and a rotor with vanes shiftable within vane slots of the rotor and riding on the cam surfaces is disclosed. The device includes at least eight vane members circumferentially spaced about the rotor and cam surfaces having diametrically opposed slopes extending over arcs of at least about 130.degree., with means for the entrance or exit of fluid along the entire length of each such slope of 130.degree. or more. At least six chamber spaces between vanes of the device always function to receive fluid and at least six such chamber spaces always function to exit fluid from the device, regardless of the rotary orientation of the rotor. A device for hydraulically assisting the steering vehicles is provided wherein rotary valve elements and rotary motor elements are concentrically mounted about a steering shaft.

Abstract: The transplanter comprises plural spade members, each having an imaginary axis line along which the blade and shaft thereof extend, and a mainframe for holding and guiding each spade member for a line of travel by the blade and shaft thereof in a direction substantially along its axis line. The mainframe includes a generally horseshoe-shaped base member having the arms thereof horizontally oriented for resting upon the surface of the earth, with the stem of a plant or tree receivable therewithin. Base guide slots are located in the base member for guiding the travel by the blades of the spade members. Upper guide slots are carried by the mainframe for guiding the travel by the shafts of the spade members. The upper guide slots and the base guide slots are so oriented that the line of travel for each spade member is maintained in an angular relationship with respect to the base member, with the lines of travel substantially intersecting at a point below the mainframe.

Abstract: A fluid-system control valve apparatus having an adjustable valve assembly between base passages and action passages. The valve assembly comprises a pair of interfaced valve members individually rotatable and normally in neutral relationship. One is a driver and the other a follower. Rotation of the driver alters the neutral relationship and forms fluid passages through the valve assembly. A reactive damming cavity is fed by a metered portion of fluid passing through the valve assembly and effects subsequent follow up rotation by the follower, thus reforming the aforesaid neutral relationship. Steering systems for vehicles comprise the control valve apparatus, a turntable for wheels, a hydraulic cylinder for turning the turntable, and conduits between the valve apparatus and hydraulic cylinder.