Abstract: The present invention relates to a closing device for closing pressure fluid conveying channels in a housing by a closing member press fitted into a channel, the outside periphery of the closing member including at least one indentation into which, by press fitting the closing member into the channel, basic material of the housing is deformed to provide a form lock. The housing is made of a malleable aluminum alloy, and the closing member is made of steel.

Abstract: A method for closing channels containing pressure fluid in a housing, so that the dynamic load applied to the housing and the closing member during the pressing process is minimized. Thus a pressing force with a defined direction and entity acts discontinuously on the closing member, the latter realizes a discontinuous feed motion directed into the channel, acting only on the housing material at the recess of the closing member producing the form-lock to yield into the recess due to the discontinuous force impact on the closing member.

Abstract: This invention relates to a valve with a valve housing which has several valve components. Sealing surfaces are provided on the circumference of the valve housing which correspond with a valve accommodating body carrying the valve housing. These surfaces are adapted to engage the valve accommodating body where (in dependence on the relative motion of the valve housing in respect of the valve accommodating body) the material volume existing on the circumference of the and plastically displace it into a circumferential recess of the valve housing.

Abstract: A valve arrangement, particularly to a solenoid valve arrangement for slip-controlled automotive vehicle brake systems, with a first valve closure member, in particular a hydraulically actuatable non-return valve, and a second valve closure member, preferably electromagnetically controllable by means of an armature and a magnet coil and arranged in a valve accommodating bore of the valve housing accommodating the valve arrangement, with both valve closure members being operable independently of each other in terms of action and being jointly arranged in the valve accommodating bore of the further valve closure member. This ensures a compact and easy manufacture of the valve arrangement.

Abstract: A pressure control valve is disclosed comprising a valve tappet (1) guided in a valve housing (3) and accommodating a compression spring (4), with a valve closure member (10) on one end of the valve tappet (1) and mating with a valve seat (9) establishing a connection between a pressure supply port (11) that emanates from a pressure fluid source and a pressure return channels (12) once the pressure attains a specific preset desired valve. In order to diminish noise, at least one friction element (2) is in engagement with the valve tappet (1) movable to abut on radial friction surfaces of the valve housing (3) and/or the valve tappet (1).

Abstract: A pressure control valve is disclosed comprising a valve tappet (1) guided in a valve housing (3) and accommodating a compression spring (4), with a valve closure member (10) on one end of the valve tappet (1) and mating with a valve seat (9) establishing a connection between a pressure supply port (11) that emanates from a pressure fluid source and a pressure return channels (12) once the pressure attains a specific preset desired valve. In order to diminish noise, at least one friction element (2) is engagement with the valve tappet (1) movable to abut on radial friction surfaces of the valve housing (3) and/or the valve tappet (1).

Abstract: A frictionally engaging device, such as a disc brake, includes a first and a second friction element which engage one another as the device is operated to reduce the extent of and/or eliminate relative movement between these elements. The first element consists of an organically bonded friction material suffering relatively more pronounced wear, and the second element is made of a metallic material, especially iron, which suffers lesser wear in operation. The extent of wear of the first element is reduced by applying a coating of a particulate material, especially such deposited by high kinetic energy impacting of the particles, on the frictional surface of the second element which cooperates with the first element. The coating advantageously contains metals, such as cobalt, chromium and/or nickel, and/or metal carbides, especially those of tungsten and chromium.

Abstract: A brake shoe assembly is composed of a carrier plate, a friction material lining secured to the carrier plate and the brake-shoe spring. The brake-shoe spring comprises between its legs a loop-shaped portion which is supported in a recess in the brake shoe, this recess being open towards the edge of the brake shoe. Arranged at the open recess is a projection which extends into the loop-shaped portion between two convolutions of the brake-shoe spring. The two convolutions are interconnected by a wire portion disposed at the area of the legs.

Abstract: The circular friction lining carrier member having replaceable friction linings comprising radially inner and outer circumferential grooves in the carrier member to guide and hold the linings and a supporting element disposed between adjacent ones of the linings to transmit circumferential forces with the supportive elements being undetachably secured to the carrier member with radial clearance between the side walls of both grooves.