A check valve assembly for controlling a flow of fluid in a transmission from a first cavity to a second cavity is disclosed. Check valve assembly may include a housing having a fluid passageway therein, a biasing member supported by the housing for axial movement along a first axis, and a valve element positioned within the fluid passageway of the housing. The valve element may be moveable between a seated position and an unseated position. An intersection of a plane normal to the first axis and the valve element defines a seating boundary of the element, which may define a minimum distance from the seating surface of the fluid passageway to the valve element when the valve element is in the unseated position. The check valve may include at least one swage extending radially inwardly from the fluid passageway to limit axial movement of the valve element.

A method for manufacturing a pole tube having two magnetic pole tube components and having one nonmagnetic ring, which is situated axially between the pole tube components, for an electromagnet, in particular for a solenoid valve of an automatic transmission in a motor vehicle, including the following: concentric configuration and/or centering of the pole tube components and of the ring, in particular on a centering pin; form-fitting connection, in particular by extrusion coating and/or casting an exterior lateral surface of the pole tube components and of the ring.

A method for manufacturing a pole tube having two magnetic pole tube components and having one nonmagnetic ring, which is situated axially between the pole tube components, for an electromagnet, in particular for a solenoid valve of an automatic transmission in a motor vehicle, including the following: concentric configuration and/or centering of the pole tube components and of the ring, in particular on a centering pin; form-fitting connection, in particular by extrusion coating and/or casting an exterior lateral surface of the pole tube components and of the ring.

A hydraulic clutch assembly includes a rotating shaft. A first clutch and a second clutch are coupled to the shaft. A first passageway located within the shaft supplies an actuating fluid to the first clutch. A second passageway located within the shaft supplies the actuating fluid to the second clutch. A first bleed passage is fluidly coupled with the first passageway. A second bleed passage is fluidly coupled to the second passageway and the first bleed passage. A first outlet is fluidly coupled to the first bleed passage. A second outlet is fluidly coupled to the second bleed passage. The first outlet and the second outlet merge together to form an outlet passage.

The present invention relates to a hydrostatic clutch actuator for a clutch, in particular a wet clutch, of a motor vehicle, wherein the clutch actuator has a drive unit, a master cylinder-piston-cylinder unit driven thereby, a hydraulic reservoir fluidically connected to the master cylinder-piston-cylinder unit, and a hydraulic system for actuating the clutch, wherein, by use of the master cylinder-piston-cylinder unit, hydraulic medium can be conveyed out of the hydraulic reservoir into the hydraulic system and the hydraulic system can be pressurized, and the hydraulic reservoir has an overflow, via which hydraulic medium can be discharged from the hydraulic reservoir and the hydraulic system.

Disclosed is a regulator for clutch operating mechanism. The regulator includes a main body, a supply flow path for fluid flow from a master cylinder to an operating cylinder, and a return flow for fluid flow from the operating cylinder to the master cylinder inside of the main body. The regulator further includes a first valve installed inside the main body and configured to close an exit of the return flow path and open the supply flow path when the fluid flows to the operating cylinder and a second valve installed inside the main body configured to close an exit of the supply flow path and to open the return flow path when the fluid flows to the master cylinder. The regulator further includes a damping apparatus having a damping space which communicates with the supply flow path of the main body and whose internal capacity changes according to hydraulic pressure.

A speed change device that includes a first clutch that has a first piston, a first engagement oil chamber, and a first centrifugal hydraulic pressure cancellation chamber configured to cancel a centrifugal hydraulic pressure generated in the first engagement oil chamber; a second clutch that has a second piston, a second engagement oil chamber, and a second centrifugal hydraulic pressure cancellation chamber configured to cancel a centrifugal hydraulic pressure generated in the second engagement oil chamber and that is disposed around the first clutch; and a drum member that defines the first engagement oil chamber together with the first piston and that defines the second engagement oil chamber together with the second piston.

A pipe joint has a tube for fluid detachably fitted thereto, and is connected to a hydraulic device such as a cylinder. The pipe joint is provided with a body into which the tube for fluid is inserted, and an attachment/detachment mechanism which is provided inside the body and which can attach/detach the tube for fluid. An inner sleeve for connecting the tube for fluid and the hydraulic device is provided in the body, the inner sleeve being interchangeable with orifices having different opening diameters.

The power transmission apparatus is a power transmission apparatus mounted on a vehicle. A gear chamber includes a gear accommodating portion used for accommodating a gear and a strainer accommodating portion used for accommodating an oil strainer. The gear accommodating portion and the strainer accommodating portion are disposed abreast in an axial direction. One clutch chamber of a pair of clutch chambers adjacent to the strainer accommodating portion only directly communicates with the strainer accommodating portion of the gear accommodating portion and the strainer accommodating portion, and the one clutch chamber communicates with the gear accommodating portion only by using the strainer accommodating portion.

A device for hydraulic control of a clutch for a motor vehicle, including a master cylinder controlled by a clutch pedal, a mechanism supplying the master cylinder with hydraulic fluid, a receiving cylinder for actuation of the clutch, the master cylinder linked to the receiver cylinder by a hydraulic pipe, the cylinder for actuation of the clutch being positioned in a rear of the vehicle and the pedal and the master cylinder being placed at a front of the vehicle, the hydraulic pipe linking the front and rear of the vehicle including a plurality of pipe offset devices along its length to encourage return of air bubbles to the mechanism supplying the master cylinder with hydraulic fluid.