A vent for a machinery enclosure such as an automotive axle comprises a vent body having passageway between the interior of the enclosure and the exterior of the enclosure and an ePTFE membrane covering the passageway. The membrane and a fibrous sorbent are disposed within the passageway between the interior of the enclosure and the membrane.

A motorcycle wherein only air can be communicated between the inside and the outside of a gear case without increasing the size of the gear case. A gear case includes a gear case body and a gear case cover. The gear case body includes a breather chamber of a labyrinth structure which continues in a circumferential direction of a rear wheel and extends in an upward and downward direction. An upper end of the breather chamber is in communication with a breather path and is open to atmospheric air while a lower end of the breather chamber is in communication with a gear chamber through a slit extending in a widthwise direction of the rear wheel.

A wheel speed sensor system for determining the rotational speed of the wheels mounted at the opposite ends of an axle without requiring wheel speed sensor assemblies for each wheel shaft axle. As a result, the speed sensor system of the present disclosure can be housed in small sized or small capacity axle housing such as banjo type housings. In one embodiment, a wheel speed sensor assembly is positioned in the axle housing to determine the speed of one of the wheel axle shafts and a differential speed sensor assembly is positioned in the axle housing to determine the rotational speed of the differential. With these two speed measurements the rotational speed of the other wheel axle shaft can be calculated by a control unit. The wheel and differential speed sensor assemblies can each include a toothed or slotted ring or disk and sensor for sensing the teeth. In each of the wheel and differential speed sensor assemblies, one of the tone ring and sensor can be mounted for rotation with a wheel axle shaft and gear of the differential respectively and the other can be fixedly mounted. The sensors can detect the passage of teeth over time via the relative motion of the teeth and sensor to determine rotational speed.

An axle assembly includes at least one axle. An axle housing having a center portion and at least one arm portion that extends from the center portion is provided: The at least one arm portion receives the at least one axle. A conduit assembly directs lubricant from the center portion to the at least one arm portion. The conduit assembly includes one or more restrictions that impede a flow of the lubricant in the conduit assembly.

An axle assembly that may have a housing and a carrier housing. The axle assembly may include one or more quiet lubricant reservoirs that may not receive rotating components of the axle assembly. A seal may be provided in a channel that may be disposed between the housing and the carrier housing.

A wheel speed sensor system for determining the rotational speed of the wheels mounted at the opposite ends of an axle without requiring wheel speed sensor assemblies for each wheel shaft axle. As a result, the speed sensor system of the present disclosure can be housed in small sized or small capacity axle housing such as banjo type housings. In one embodiment, a wheel speed sensor assembly is positioned in the axle housing to determine the speed of one of the wheel axle shafts and a differential speed sensor assembly is positioned in the axle housing to determine the rotational speed of the differential. With these two speed measurements the rotational speed of the other wheel axle shaft can be calculated by a control unit. The wheel and differential speed sensor assemblies can each include a toothed or slotted ring or disk and sensor for sensing the teeth. In each of the wheel and differential speed sensor assemblies, one of the tone ring and sensor can be mounted for rotation with a wheel axle shaft and gear of the differential respectively and the other can be fixedly mounted. The sensors can detect the passage of teeth over time via the relative motion of the teeth and sensor to determine rotational speed.

A transfer case for a normally rear wheel drive vehicle having selectively engageable front wheel drive is provided. The transfer case includes a rear housing with a main drive shaft aperture and an aluminum cast front housing threadably connected with the rear housing. The front housing has a main drive shaft aperture axially aligned with the rear housing main drive shaft aperture. The front housing has an integrally formed cylindrical yoke forming an isolation mount for receiving a polymeric isolator allowing for connection of the transfer case with a chassis structure of the vehicle. The cylindrical yoke has a cylindrical preform therein.