The Torrington Company

John M Grillo

James A Hilby

Cameron G Gardella

Vern Van Fleet

Gary J Hill

Mark A Polinsky

Edward P Butler, Iii

Mark E La Croix

Gordon L Steltzer

Leo M Reubelt

Scott M Duncan

Brian P Berg

Vincent E Leto

An oscillating bearing is disclosed for a variable-displacement axial piston hydraulic machine having a swashplate with a convex semi-cylindrical bearing face with provisions for attaching the oscillating bearing, and a housing with a concave semi-cylindrical bearing saddle. The oscillating bearing includes thin outer and inner race members having centered openings and formed in arcs congruent with the concave surface of the bearing saddle of the housing and the convex bearing face of the swashplate, respectively. The outer race member has support means on at least one axial end for supporting a timing member which engages a timing feature of the swashplate and synchronizes motion for all parts of the oscillating bearing, and the inner race member has means for holding the inner race against the convex bearing face of the swashplate. A separator is interposed between the inner and outer race members, the separator being formed in an arc having inner and outer surfaces parallel to the proximal surfaces of the race members, the separator also having an axially centered opening and two additional substantially rectangular openings axially spaced from the axial ends of the separator and the centered opening. The additional openings serve as pockets for anti-friction rollers. The separator further has one axial end which extends beyond the proximal axial ends of the inner and outer races and which includes a timing notch for engaging the timing member.

Roller bearing segment for swashplates and other limited-oscillation

A fluid seal is joined to a seal carrier, and a magneto-responsive sensor is coupled to a carrier to sense the polarities of a magnet borne on a rotatable shaft. The seal carrier, with the incorporated sensor, is arranged about the shaft, and leads from the sensor transmit an output signal voltage which corresponds to, or is proportional to the speed of rotation of the shaft. Depending upon the type of sensor employed, the signal voltage will be of repeatedly changing amplitude (i.e., pulsed or sine wave), or of given amplitude, in which the signal goes from zero to the given amplitude, to zero cyclically, or the sine wave amplitude/voltage increases with increasing speed, or pulse widths which diminish with speed acceleration.

Speed sensor assembly having a fluid seal carrier and piloting cup

An antifriction bearing assembly has rolling elements and a magnetic encoder ring housed in an outer ring with two portions which can have different diameters. A sensor is removably attached to the outer ring in alignment with the encoder ring. Various seal assembly configurations may be used to seal the bearing while accommodating the sensor.

Antifriction bearing with a clip-on sensor

A device to determine rotational parameters of a rotatable shaft mounted within a stationary tube comprising a substantially annular shaped target. The target is attached to a rotatable shaft. A target retainer has a bore for receiving the rotatable shaft, and is dimensioned to be securely attached to an interior surface of the tube. The target retainer has a radially extending surface adjacent each axial end of the target to restrain axial movement of the target, and also has an aperture adjacent the outer periphery of the target. A sensor extends into the aperture when the sensor is mounted on the stationary tube. Fasteners connect the sensor to the stationary tube.

Sensor to determine rotational parameters

Antifriction bearing with a clip-on sensor cooperating with a shaft

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Torrington, CT, United States of America

John M Grillo