A roller bearing for a pod joint comprising an inner race, an outer ring assembly, a race that runs along a bell section and is disposed on the outer surface of the outer ring assembly, a plurality of rolling elements, wherein the plurality of rolling elements are disposed between the inner race and the outer ring assembly and are formed as rollers, and a cage assembly, wherein the rolling elements are disposed in the cage assembly, wherein the cage assembly is formed as a central cage, wherein the rollers pass through the central cage in a middle area, and the running areas thereof project outward from both sides of the central cage.

A roller bearing for a pod joint comprising an inner race, an outer ring assembly, a race that runs along a bell section and is disposed on the outer surface of the outer ring assembly, a plurality of rolling elements, wherein the plurality of rolling elements are disposed between the inner race and the outer ring assembly and are formed as rollers, and a cage assembly, wherein the rolling elements are disposed in the cage assembly, wherein the cage assembly is formed as a central cage, wherein the rollers pass through the central cage in a middle area, and the running areas thereof project outward from both sides of the central cage.

The present invention provides a wide angle joint including: a pair of yoke shafts mounted on opposite sides thereof to transmit power from the one side to the opposite side, each yoke shaft having a ball end portion provided on a first yoke part to which a spider is coupled; a plate having a large-diameter part formed in the middle thereof and protruding parts protruding from the large-diameter part in the opposite axial directions while being reduced in a radially inward direction, wherein the protruding parts have insertion recesses into which the ball end portions of the yoke shafts are inserted, and the large-diameter part is faulted to have different widths in radial directions from the central portion thereof; and a pair of coupling yokes, each of which has a second yoke part connected with the first yoke part through the spider and a support recess into which the large-diameter part of the plate is inserted.

The present invention provides a wide angle joint including: a pair of yoke shafts mounted on opposite sides thereof to transmit power from the one side to the opposite side, each yoke shaft having a ball end portion provided on a first yoke part to which a spider is coupled; a plate having a large-diameter part formed in the middle thereof and protruding parts protruding from the large-diameter part in the opposite axial directions while being reduced in a radially inward direction, wherein the protruding parts have insertion recesses into which the ball end portions of the yoke shafts are inserted, and the large-diameter part is faulted to have different widths in radial directions from the central portion thereof; and a pair of coupling yokes, each of which has a second yoke part connected with the first yoke part through the spider and a support recess into which the large-diameter part of the plate is inserted.

A ball-CV style transmission suitable for use in a Positive Displacement Motor (PDM). A shaft provides shaft wings received into housing receptacles on a housing. A ball and a Torque Transfer Element (TTE) is interposed between each shaft wing and housing within each housing receptacle, with the ball received into opposing recesses preferably on the shaft wing and the TTE. The TTEs float within their corresponding housing receptacles so as to maintain torque transfer contact between all thrust surfaces during articulated rotation of the shaft with respect to the housing. The TTEs preferably float generally radially towards the shaft centerline as angular deflection increases during articulated rotation.

A multi-piece propeller shaft includes a constant velocity joint disposed between and operably interconnecting first and second shaft segments. The constant velocity joint includes an outer race extending along an axis A from a first outer race end operably connected to the second shaft segment to a second outer race end to define an inner surface bounding an internal cavity. A vent and seal assembly is disposed inside the outer race and defines a plurality of venting cavities disposed serially along the axis A in fluid communication with one another. A first one of the venting cavities is disposed in fluid communication with the internal cavity and a last one of the venting cavities is disposed in fluid communication with an environment of the constant velocity joint for venting air from the internal cavity to the environment.

A multi-piece propeller shaft includes a constant velocity joint disposed between and operably interconnecting first and second shaft segments. The constant velocity joint includes an outer race extending along an axis A from a first outer race end operably connected to the second shaft segment to a second outer race end to define an inner surface bounding an internal cavity. A vent and seal assembly is disposed inside the outer race and defines a plurality of venting cavities disposed serially along the axis A in fluid communication with one another. A first one of the venting cavities is disposed in fluid communication with the internal cavity and a last one of the venting cavities is disposed in fluid communication with an environment of the constant velocity joint for venting air from the internal cavity to the environment.

Various drop head coupling assemblies are described. The coupling assemblies enable a drop head tool typically used in drain cleaning operations to be releasably engaged with a drain cleaning cable. The coupling assemblies enable the drop head tool to undergo a wide range of motion relative to the drain cleaning cable, particularly during rotation of the cable and drop head.

A chainring installation structure includes a crank, a spindle, and a swing assembly. The spindle includes a first rotational axis, and one end of the spindle is connected to the crank. The crank drives the spindle to cause the spindle to rotate about the first rotational axis. The swing assembly is disposed at one end of the spindle adjacent to the crank without contacting the crank. The swing assembly can shift axially relative to the spindle. The swing assembly includes a second rotational axis that crosses the first rotational axis, in which the swing assembly can rotate about the second rotational axis.

A chainring installation structure includes a crank, a spindle, and a swing assembly. The spindle includes a first rotational axis, and one end of the spindle is connected to the crank. The crank drives the spindle to cause the spindle to rotate about the first rotational axis. The swing assembly is disposed at one end of the spindle adjacent to the crank without contacting the crank. The swing assembly can shift axially relative to the spindle. The swing assembly includes a second rotational axis that crosses the first rotational axis, in which the swing assembly can rotate about the second rotational axis.