Case Corporation

Vladimir D Shubinsky

Joachim Horsch

George R Vater

George M Butkovich

Leslie L Pagel, Jr

An improved rotary shaft seal assembly is disclosed herein. The seal assembly is disclosed in combination with an example of transmission components with which it may be used. The assembly provides a rotary seal for fluid flow between a stationary cylinder and a shaft which rotates within the cylinder. The shaft includes a porting groove and seal grooves on each side of the porting groove. The seal grooves each include a cast iron and a polymeric (such as Teflon&reg;) seal which form seals between the shaft and cylinder on both sides of the porting groove.

Rotary shaft seal

An apparatus and method is disclosed for retaining a first and second PTO in longitudinal relation to an output sleeve in an agricultural vehicle. The output sleeve is for interchangeably supporting and transmitting rotational power to the first and second PTOs, and includes an outward protrusion proximate an end of the output sleeve. The apparatus includes an outer plate with an outer plate aperture such that the outer plate can be longitudinally positioned onto the first PTO behind a shoulder on the first PTO. The apparatus also includes an inner plate with an inner plate aperture such that the inner plate can be longitudinally positioned onto the output sleeve, and an inward protrusion into the inner plate aperture. The inward protrusion prevents removal of the inner plate from the output sleeve if, after the inward protrusion has been moved longitudinally past the outward protrusion, the inner plate is rotated with respect to the output sleeve so that the inward protrusion is in front of the outward protrusion. The apparatus further includes a fastener that couples the outer plate to the inner plate. Also disclosed is a bearing support assembly that includes a housing assembly, a bearing sleeve and a plurality of bearings. Further disclosed is a sensor for sensing the movement of teeth on the inner plate or on the bearing sleeve.

Dual speed PTO shaft retention and support system

A transmission for an off-highway implement having a plurality of selectively operable gear meshes arranged between input and output shafts of the transmission. A two-speed planetary section is coupled between the output shaft and the transmission output drive shaft. The planetary section of the transmission includes a sun gear that rotates with the output shaft, a planetary carrier that rotates with the transmission output drive shaft and has a series of planetary gears arranged in intermeshing relationship between a rotatable ring gear and the sun gear. A pair of clutch assemblies selectively condition the planetary section of the transmission and thereby influence the turning ratio between the input shaft and the transmission output drive shaft. To rotatably turn the transmission output drive shaft in a third speed ratio condition relative to the turning speed of the output shaft, a selectively operated drive system is associated with the planetary section of the transmission. The drive system allows selective rotation of the ring gear thereby developing a super low speed ratio between the turning output shaft and the transmission output drive shaft. An adjustment assembly is also disclosed for simplifying adjustment of the end play of elongated shaft assemblies disposed throughout the transmission assembly.

Transmission for an off-highway implement

A clutch assembly for selectively transferring rotary power between axially aligned drive and driven members arranged about a transmission shaft of off-highway equipment such as a tractor or the like. The clutch assembly includes an actuator assembly arranged in operable combination with a clutch pack of interleaved annular clutch plates. The actuator assembly includes a clutch piston arranged in operable combination with and establishing an expandable fluid receiving pocket with the drive member. The clutch assembly further includes an annular ring disposed in sealing engagement with and between the clutch piston and the drive member. As long as the clutch piston is in a released position, the annular ring operably divides the piston cavity into inner and outer annular cavities disposed at different radial distances from the axis of the shaft. The clutch assembly further includes a fluid conduit for delivering pressurized fluid to the piston cavity and that opens to the inner chamber of the piston cavity or pocket.

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Northbrook, IL, United States of America

Vladimir D Shubinsky