627results about "Bellows" patented technology

[Problem] A dust cover for a steering prevents offensive sounds from emitting during an operation of a steering wheel.

[Means for Solving] A dust cover for a steering shaft according to the present invention includes: a bush 2 of low-frictional material, through which a steering shaft 20 penetrates; a plurality of bellows 3 made of rubber, provided in an axial direction of the steering shaft 20, and arranged between the bush 2 and a panel 19, for sealing the clearance; and an annular seal lip 4 in contact with the outer periphery of the steering shaft 20.

A solar actuator comprises a top coupler, a bottom coupler, and a plurality of fluidic bellows actuators, wherein a fluidic bellows actuator of the plurality of fluidic bellows actuators moves the top coupler relative to the bottom coupler.

A rolling boot assembly includes a shroud having a first portion and a second portion, and a radial boot having a first section and a second section. The second portion of the shroud has a free end. The first section of the radial boot is connected to the first portion of the shroud advantageously allowing the radial boot to roll axially toward the second portion of the shroud when the second section of the radial boot is selectively attached to a shaft or an inner joint part and the first portion of the shroud is selectively connected to an outer joint part. The second portion of the shroud remains unconnected. Also provided is a constant velocity joint assembly.

A bellows cylinder (10) provided with a bellows part (13) at least at a part is formed so that a first surface 16 of a cylinder wall of the above bellows part is tilted to the radial direction of the bellows part and is directed to one end of the bellows part with a ridge (14) as a boundary. A second surface 18 is parallelized to the radial direction of the bellows part and is directed to the other end of the bellows part or is tilted on the side of the first surface. The second surface is pressed inside the first surface when the bellows part is compressed.

A boot-type seal having a seal and a valve. The seal has a first seal member, which is configured to sealingly engage a first surface, and a second seal member, which is configured to sealingly engage a second surface. The valve is coupled to the seal and is operable in a first condition, which inhibits fluid communication therethrough, and a second condition, which permits fluid communication therethrough. The condition of the valve changes from the first condition to the second condition in response to a fluid pressure exerted on a side of the seal that exceeds a predetermined threshold pressure. A brake assembly that incorporates the boot-type seal is also provided.

A seal boot has on one side longitudinally formed a gap, the gap being provided with a zipper for fast and easy replacement of the seal boot and a grease nipple being disposed on the boot for direct refill of grease without breaking down the assembly of the propeller shaft.

A diaphragm bellows device comprises a diaphragm bellows with a plurality of successive diaphragms which are welded together alternately at the outer and inner edges, wherein the length of the diaphragm bellows can be adjusted between an expanded state and a contracted state, and a plurality of sleeve parts which surround the successive diaphragms and which, together, enclose the successive diaphragms also in the expanded state of the diaphragm bellows over its entire longitudinal extension and overlap to a greater or lesser extent in axial direction of the diaphragm bellows depending on the adjusted length of the diaphragm bellows, wherein at least one of the sleeve parts is held on the welded outer edges of two adjoining diaphragms by a snap connection.

Provided is a ball joint which enhances a sealing performance between a boot seal (4) and a ball shank (1) and which can maintain this sealing performance even during swinging motion of the ball shank (1) with respect to a holder (2), making it possible to completely prevent intrusion of dust and muddy water into a ball reception portion (20) of the holder (2) The ball shank (1) is provided with a flange portion (13), with a tapered surface (16) inclined with respect to an axial direction of the ball shank (1) being formed on the flange portion (13). The boot seal (4) is constructed of an annular fixation portion fixed to the holder (2), an annular seal portion (42) tightening a shaft portion (10) of the ball shank (1) and held in press contact with the flange portion (13). The seal portion (42) has a side lip portion (48) corresponding to the tapered surface (16) of the flange portion (13) and protruding so as to diverge obliquely, the side lip portion (48) being held in press contact with the tapered surface (16) when the seal portion (42) is attached to the shaft portion (10) of the ball shank (1).

A retaining cap includes a sleeve-shaped basic body which has at least one protective bellows retaining segment on which a protective bellows can be supported. A component which is movable with respect to the retaining cap can penetrate into the installation space of the retaining cap, the retaining cap having a plurality of deformation regions which are arranged in the circumferential direction. When in contact with the movable component, these regions make possible a free passage for the movable component.

The formation of a bellows made up of a stack of a predetermined number of ring-convolutions and having an intermediate plate supported within said stack is achieved by supplying several thin metal rings, each having inner and outer edges. A pair of these metal rings are positioned in contiguous relationship and their adjacent inside edges are welded together to form a ring-convolution. This process is repeated until a sufficient number of ring-convolutions are made to eventually make the desired bellows. Before these separate ring-convolutions are fused to each other, an intermediate plate and a support ring are made. The intermediate plate is a disc of metal that is sized smaller than the inside diameter of the rings and is secured to the support ring. The support ring is then positioned between two formed ring-convolutions in contiguous relationship and the three abutting outside edges are welded to each other to form a support plate convolution. The already made ring-convolutions and the support plate convolution are then stacked in the desired order and in contiguous relationship. All not-yet welded adjacent outside edges of said ring-convolutions and said support plate convolution are then welded to form the bellows. A bottom plate is formed and welded to the outside edge of the bottommost ring-convolution and a top ring is finally welded to the uppermost convolution to complete the bellows. The top ring is meant to be welded to a base plate of an infusion pump.

A column hole cover is interposed between a circumferential portion of an aperture of a column hole of an instrument panel and a steering gear box capable of being displaced in a predetermined direction. The column hole cover includes a cylindrical main body extended in the predetermined direction. The main body includes a first annular end portion directly or indirectly fixed to the steering gear box, and a second annular end portion. The second end portion is provided with an annular seal. An intermediate portion between the first and second end portions is provided with a expandable/contractible portion capable of being elastically expanded or contracted in the predetermined direction. Irrespective of the displacement of the steering gear box, the annular seal is maintained in an elastic pressure contact against the circumferential portion of the aperture of the instrument panel by a reaction force of the compressed expandable/contractible portion.

A ball-and-socket joint has a housing, a ball pivot (3) mounted pivotably in the housing, and a sealing bellows (1), which is fastened to the housing and is mounted on the ball pivot (3) slidably via a sealing ring (4) provided with two legs (5, 6). A first leg (5) of the two legs (5, 6) is in contact with the ball pivot (3) under tension and the second leg (6) meshes with the wall of the sealing bellows (1). The second leg (6) is, furthermore, fastened in an anchoring ring (7) arranged at least partially in the wall of the sealing bellows (1).

A boot with O-ring seal for sealing around an article such as a universal joint housing includes a boot having a hollow body adapted to tightly receive the article. An O-ring extends lengthwise within an internal annular groove in the body. The O-ring, in its natural free state condition, has a radial dimension which is greater than the depth of the groove so that when the article is received in the body the O-ring is deformed and makes sealing contact with the article. The O-ring, in its natural free state condition, has an axial dimension which is less than the width of the groove by an amount such that when the article is received in the body and the O-ring makes sealing contact with the article, the O-ring is deformed into the space between the side walls of the groove.

A joint assembly comprising a seal provided with a first retaining surface and a second retaining surface, a ball stud provided with a ball portion and a socket, wherein the socket is provided with a seal acceptor and a ball cooperating surface, wherein the ball portion of the ball stud is within the ball cooperating surface and a portion of the seal is within the seal acceptor, and a first and a second constricting element, wherein the first constricting element is held in place by the first retaining surface on the seal and the second constricting element is held in place by the second retaining surface on the seal.

The invention relates to a ball joint, including a joint housing having a recess, a ball stud having a ball head, a sealing bellows having a sealing seat on the housing side and a sealing seat on the stud side in the form of a bellows mouth which is adapted to be brought into contact with the ball stud, a bellows body of the sealing bellows extending between the sealing seat on the housing side and the bellows mouth, and further including a joint socket, the ball head being accommodated for swiveling motion within the joint socket, and the joint socket being inserted in the recess of the joint housing.

The invention discloses a production process of a metal corrugated pipe. The process comprises the steps of (1), wave plate punching and rolling press deforming; (2), shotblasting; (3), welding; (5), heat treating; (6), graphite annulus embedding (7), graphite annulus picking; (8), trimming; and (9), polishing. The process of the present invention is suitable for the metal welding corrugated pipe of single layer or multi layer wave plate, and is mainly characterized in that after the shotblasting is adopted, the wave plate produces a certain micro deforming, the fatigue lifetime is increased, and the breakage and the fracture damage of the corrugated pipe during the operation process can be reduced; simultaneously the welding process method of the invention improves the weld strength of the corrugated pipe, and reduces the oxidation of the corrugated pipe when being welded; the heat treating process method of the invention reduces the oxidation of the corrugated pipe when the heat treating is performed, and makes the elastic property be steady. The welding and the heat treating process methods of the invention reduce the elasticity losing, the breakage and fracture damage of the corrugated pipe during the operation process.