A method for manufacturing a monoblock-type caliper housing includes: preparing a middle core mold provided with a first and second core-forming portion and a first, second, and third channel; pouring molding sand into the first and second core-forming portions and the first, second, and third channels; heating the middle core mold to form a middle core; forming a salt coating layer on the surfaces of the first, second, and third channel-forming portions of the middle core; putting and heating the middle core in the middle core mold; putting the resultant middle core in a casting mold; pouring molten aluminum in a cavity between the middle core and the casting mold to form a caliper housing; applying ultrasonic waves to the caliper housing to remove the middle core; rinsing the caliper housing; and forming an oil supply hole in the caliper housing.

A disc brake, in particular for a commercial vehicle, has functional components that can be reused after use and subsequent examination for operational safety. The disc brake is designed in such a way that at least each of the safety-relevant functional components is equipped with at least one indicator, the operation-related service life of which is less than the safety-relevant ranges of the functional components.

A hydraulic fluid pressure operated torque transmitting assembly for use as a brake or clutch which utilizes hydraulic pressure operated cylinders in a housing moveable with respect to an axially stationary spring housing to move a pressure plate against rotating discs and reaction plates. Hydraulic fluid pressure disengages the torque transmission and loss of hydraulic pressure enables springs in the spring housing to move the pressure plate to engage the friction discs for torque transmission. Radially removable spacers permit the spring housing position on mounting studs to be adjusted for compensating for friction disc wear. The hydraulic cylinders each have a drain port communicating with an annular collector groove in the cylinder bore. The drain ports are interconnected through flexible conduits connected to a master drain port in the cylinder housing.

A transmission gear synchronizer includes a sliding sleeve a hub and a blocker ring. The sliding sleeve has an inner surface defining a sleeve spline. The hub is received within the sliding sleeve. The hub has a plurality of gear teeth extending radially outward from a root diameter of the hub. The plurality of gear teeth are configured to engage the sleeve spine. A notch is disposed proximate the root diameter of the hub and spaced apart from the plurality of gear teeth. The blocker ring comprises a thermoplastic material. The blocker ring comprises a thermoplastic material. The blocker ring has a plurality of molded clutch teeth extending radially outward from a root diameter of the blocker ring. The plurality of molded clutch teeth are configured to engage the sleeve spline in response to the sliding sleeve engaging the blocker ring during a transmission shift event.

An improved multi-disc wet clutch assembly. The improvements include an inner clutch hub having eighteen holes extending through a wall of the inner clutch hub, arranged in six series of three holes with each series being disposed approximately sixty degrees apart from each other and starting at a different position along the length of the inner clutch hub wall. The improvements further include a diaphragm plate disposed within a bore at the distal end of the inner clutch hub. Methods of retrofitting preexisting clutch assemblies are also described.

A transmission gear synchronizer may include a sliding sleeve, a hub configured to be received within the sliding sleeve, and a blocker ring disposed adjacent the hub. The blocker ring may have a plurality of molded clutch teeth and a plurality of molded grooves extending axially along an inner surface of the blocker ring.

A one-piece rail vehicle brake disk is made of steel or cast iron, comprises at least one effective surface with which a friction element comes in contact during a braking maneuver, and is designed in such a way that the effective surface has a plurality of blind holes.

An adjusting device for a disc brake, in particular for utility vehicles, is provided. The adjusting device includes a freewheel having an inner ring and an outer ring. The inner ring and outer ring together with multiple rolling bearing balls form an axial ball bearing. The inner ring is rotatably supported relative to the outer ring by the rolling bearing balls. The freewheel further has a cage in which multiple clamping rollers are biased with compression springs and compression pieces, the cage being arranged between the inner ring and the outer ring in a radial direction relative to a through-bore passing through the inner and outer rings. The compression springs may be pretensioned by rotating the cage relative to the inner ring and then fixing the cage to on the inner ring with a locking device.

A brake device, configured to be installed directly on a driving axle or through a hub, wherein said device includes a first brake disc joined to the axle sharing rotary motion, a first container disc and a second container disc configured to be moved in the axial direction of said axle. The container discs are positioned on each side of the brake disc, such that both are configured to be moved in the axial direction towards the linings of the first brake disc and to exert a pushing pressure thereon, producing the braking of the brake disc and, therefore, of the driving axle whereon it is assembled. Furthermore, the container discs comprise an inner circuit configured to accommodate the passage of a coolant configured to cool them.

A device that employs shear forces to transmit energy includes an outer housing assembly, a disk, and a reservoir with a working fluid. The disk is received in and rotatable relative to the outer housing assembly. A working cavity is formed between a rotor portion of the disk and the outer housing assembly into which the working fluid is received to create shear forces. A plurality of flow altering structures are disposed on the outer housing assembly and are configured to reduce a thickness of a boundary layer of the working fluid in the working cavity in areas that are local to the flow altering structures.