Abstract: A wobblestick with driving teeth with a helix which is equal to or less than 1° of the running angle of the wobblestick.

Abstract: An apparatus for providing a flat to stepped convex facing for grinding wheels used for the finished machining of parts, the apparatus including dressing wheels located only at the outer diameter of the Cubic-Boron-Nitride wheels to be dressed.

Abstract: A fixture for selectively locating and retaining hydraulic gerotor rotors in position in respect to a grinding wheel, the fixture clamping the rotor between two oversized positioning rolls located in rotor lobe valleys on opposite sides of the rotor.

Abstract: A hydraulic gerotor motor utilizing the holes surrounding the main assembly bolts together with interconnecting radially extending passages so as to allow for the transfer of fluid axially through the device from a single fluid input hole to an area 360° surrounding a valve.

Abstract: A hydraulic pressure device valve having an outer circumferential support to a surrounding housing journal is constructed of a series of flat plates brazed together to form a unitary member containing substantially all of the valving passages of the entire device.

Abstract: A hydraulic pressure device valve having an outer circumferential support to a surrounding housing journal is constructed of a series of flat plates brazed together to form a unitary member containing substantially all of the valving passages of the entire device.

Abstract: A hydraulic gerotor motor utilizing the holes surrounding the main assembly bolts together with interconnecting radially extending passages so as to allow for the transfer of fluid axially through the device from a single fluid input hole to an area 360° surrounding a valve.

Abstract: A fixture for selectively locating and retaining hydraulic gerotor rotors in position in respect to a grinding wheel, the fixture clamping the rotor between two oversized positioning rolls located in rotor lobe valleys on opposite sides of the rotor.

Abstract: A seal for a hydraulic pressure device, which seal is located at the joint where one part circumferentially surrounds another part with both of the parts contacting a single adjoining surface, seal being in sealing contact with both parts and the adjoining surface.

Abstract: A fixture for selectively locating and retaining hydraulic gerotor rotors in position in respect to a grinding wheel, the fixture clamping the rotor between two oversized positioning rolls located in rotor lobe valleys on opposite sides of the rotor.

Abstract: A hydraulic gerotor motor utilizing the holes surrounding the main assembly bolts together with interconnecting radially extending passages so as to allow for the transfer of fluid axially through the device from a single fluid input hole to an area 360° surrounding a valve.

Abstract: An apparatus for providing a flat to stepped convex facing for grinding wheels used for the finished machining of parts, the apparatus including dressing wheels located only at the outer diameter of the Cubic-Boron-Nitride wheels to be dressed.

Abstract: A fixture for selectively locating and retaining hydraulic gerotor rotors in position in respect to a grinding wheel, the fixture clamping the rotor between two oversized positioning rolls located in rotor lobe valleys on opposite sides of the rotor.

Abstract: An apparatus for providing a flat to stepped convex facing for grinding wheels used for the finished machining of parts, the apparatus including dressing wheels located only at the outer diameter of the Cubic-Boron-Nitride wheels to be dressed.

Abstract: A pressure transfer system for a gerotor motor having a rotating valve increased non-operational pressure zone, and a reduced pressure cavity, the system comprising a check valve, said check valve being in the rotating valve, and said check valve connecting the increased non-operational pressure zone to the reduced pressure zone.

Abstract: A brake assembly for a shaft including a series of brake disks interconnected to the shaft with the interleaved reaction disks interconnected to a fixed surrounding part by accurately positioned pins.

Abstract: A gerotor hydraulic pressure device using a powder metal wear plate to close off at least one end of a stator/rotor mechanism, with the wear plate having an axial length 0.003" greater than the cavity in the housing that contains it.

Abstract: A brake assembly for a shaft including a series of brake disks interconnected to the shaft by rectangular tabs with the interleaved reaction disks interconnected to the housing by accurately positioned pins, which pins are located in grooves in the reaction disks and radially surrounding the housing respectively.

Abstract: A hydraulic pressure device valve having an outer circumferential support to a surrounding housing journal is constructed of a series of flat plates brazed together to form a unitary member containing substantially all of the valving passages of the entire device.

Abstract: An improved drive assembly includes a gerotor-type hydraulic motor having a housing connected to a frame. An output member is rotatably mounted on a hollow spindle which is integrally formed with the motor housing. Operation of the motor rotates an input shaft which is disposed within the spindle and is connected with the output member through a gear arrangement. In order to tend to minimize the axial extent of the drive assembly, the gear arrangement is located inwardly of an outer end of the spindle. The gear arrangement includes a central or sun gear which is disposed within the spindle. A plurality of idler gears extend through openings formed in the spindle into engagement with the central gear. These idler gears meshingly engage a ring gear which is fixedly connected with the output member. The gerotor-type hydraulic motor includes a wobble shaft which is connected with the input shaft to the central gear by a coupling member.