An air circulation cover which provides circulation of air between the inner volume and the external environment and the yoke shaft and the sleeve yoke of the cardan shaft, and prevents the ingress of foreign matter into the inner volume. The cover has a ring-shaped main body providing air passage to the center part, a body support member that seats the main body inside the cover assembly housing, a diaphragm mounted in the center section of body support element, air slots providing air passage located on the body of diaphragm, a wide surface filter element, a filter support element and a body outer edge.

A constant velocity joint includes a shaft and an inner race coupled to the shaft. The inner race has a shaft groove formed thereon. A boot assembly engages the shaft and covers the inner race. A pair of grooves is axially formed in the boot assembly. The shaft groove provides communication between the pair of grooves.

A propshaft with first and second propshaft segments, a bearing assembly, a slinger and a boot seal. The first and second propshaft segments have connection members that are non-rotatably but axially slidably coupled together. The bearing assembly is mounted to the first propshaft segment and supports the first propshaft segment for rotation. The slinger has a first slinger member, which is mounted to the bearing assembly, and a second slinger member that is mounted to the first propshaft segment. The first and second slinger members cooperate to shroud an axial end of the bearing assembly and are spaced apart from one another to form a labyrinth. Opposite ends of the boot seal are fixedly coupled to the second slinger member and the second propshaft segment. A vent is disposed through the second slinger member to fluidly couple the boot seal and the labyrinth.

An air venting system for a constant velocity joint (20) having an inner race (24), an outer race (22), a cage (26), a plurality of torque transferring elements (28), a drive sleeve, a drive nut and a boot assembly. The outer race has a wall portion (90) having a vent hole (88, 242) with a first and a second axially extending channel (224, 264). A radially extending wall integrally connects the second axially extending channel to the first axially extending channel. A valve (256) having a stopper portion (264), a disk portion (258) and a breather portion (260) is at least partially located within the vent hole. The breather portion (260) further includes an axially extending ring (292) that terminates in a radially extending wall. At least a portion (300) of an edge portion of the radially extending wall of the breather portion of the valve is in direct contact with at least a portion (250) of an outer surface of the wall portion of the outer race.

A propshaft with first and second propshaft segments, a bearing assembly, a slinger and a boot seal. The first and second propshaft segments have connection members that are non-rotatably but axially slidably coupled together. The bearing assembly is mounted to the first propshaft segment and supports the first propshaft segment for rotation. The slinger has a first slinger member, which is mounted to the bearing assembly, and a second slinger member that is mounted to the first propshaft segment. The first and second slinger members cooperate to shroud an axial end of the bearing assembly and are spaced apart from one another to form a labyrinth. Opposite ends of the boot seal are fixedly coupled to the second slinger member and the second propshaft segment. A vent is disposed through the second slinger member to fluidly couple the boot seal and the labyrinth.

A half-shaft assembly includes a first constant velocity (CV) joint, a second CV joint and an axial movement joint connected between the first CV joint and the second CV joint. The axial movement joint includes a first shaft coupled to the first CV joint and a second shaft coupled to the second CV joint, wherein mechanical input received on the first shaft is communicated to the second shaft, and wherein the second shaft slides axially within the first shaft. The axial movement joint further includes an axial boot cover coupled on a first end to the first shaft and on a second end to the second shaft that accommodates axial movement of the first shaft relative to the second shaft. The first constant velocity (CV) joint is coupled to provide torsional input received at an input to the first shaft, the first CV joint having a first CV boot cover. The second CV joint coupled to provide torsional output received from the second shaft to an output, the second CV joint having a second CV boot cover.

A boot with a body cavity that protects a moveable joint and retains lubricant associated with the joint is disclosed. The wall of the boot body includes a venting aperture that is protected by a surrounding barrier structure.

A boot is provided in which the formation of an internal pressure inside the boot during assembly is prevented. The boot has a first fastening region and a first diameter and having a second fastening region with a second diameter, wherein the first diameter is smaller than the second diameter, and wherein the first fastening region comprises a binder seat region on its outer circumference, wherein at an inner circumference of the first fastening region at least one first and at least one second aerating means are arranged axially spaced from each other at the inner circumference which is formed with a flat surface, and protrude beyond said surface of the inner circumference.

A boot with a body cavity that protects a moveable joint and retains lubricant associated with the joint is disclosed. The wall of the boot body includes a venting aperture that is protected by a surrounding barrier structure.

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.