77results about "Bellows" patented technology

To provide an inexpensive sealing member for a rolling bearing and a rolling bearing that can suppress pressure changes inside the rolling bearing and prevent grease leakage from inside the rolling bearing and the intrusion of foreign matter from outside the rolling bearing. [Solution] The sealing member for a rolling bearing has an annular core and an elastic sealing material fixed to the core, the core includes an annular portion and has at least one hole that penetrates the annular portion from one axial side to the other axial side. The elastic sealing material has a closing portion provided to close the hole, and the closing portion has at least one axially projecting peak and / or valley.

The disclosure provides a steering dust seal which seals a gap between a shaft hole of a column hole provided in a dashboard and a steering shaft. The steering dust seal includes an annular mounting portion attached to an inner peripheral surface of the shaft hole, an annular bumper facing the steering shaft in a non-contact state, a bellows connecting the mounting portion and the bumper, and a seal lip extending from the bumper to contact with the steering shaft. A lip included in the seal lip is covered over its entire circumference with a resin-made sliding portion having a friction coefficient preventing abnormal noise from occurring due to a stick-slip phenomenon between the rotating steering shaft and the sliding portion.

The invention relates to a universal joint (1) comprising two articulation forks (10, 20), each extending along a respective elongation direction (O1, O2), and each comprising two facing plates (12, 22). The forks are articulated to each other at their facings by a cross joint (30) comprising a first journal (31) and a second journal (32) arranged in the form of a cross perpendicular to each other. The two free ends of each journal are engaged in two corresponding oblong holes (12A, 22A) arranged opposite each other on the two facing plates of a respective fork and oriented parallel to the elongation direction of that fork. The universal joint further comprises an elastically deformable bellows (40) filled with a lubricant and in which are enclosed in a sealed manner the said cross member and the cheeks of the said articulation forks.Figure to be published with the abbreviation: Fig. 2.

The invention relates to a curable fluoroelastomer composition having low swelling tendency, comprising: A) a curable fluoroelastomer; B) a curing system; and C) 0.1 wt.-% to 30 wt.-% of a nitrogen-containing polymer, selected from polyimide, polyimide, mixtures and / or copolymers thereof, each relative to the total weight of fluoroelastomer and nitrogen-containing polymer, the nitrogen-containing polymer being present in particulate form of an average particle size in the range of 0.15 to 70 μm and / or in fiber form having an average fiber diameter in the range of 0.15 to 70 μm.

A disc brake, comprising a brake caliper (1) in which two brake pads (2) are arranged which can be pressed against a brake disc in operation, one of which, on the action side, can be actuated by means of a clamping device (3) via at least one axially adjustable adjusting spindle (4) carrying a pressure piece (5), and the adjusting spindle (4) is guided through an opening in a cover (7) that closes a receiving chamber of the brake caliper (1), forming an annular gap, wherein a sealing arrangement (12) is provided in the area of ​​the opening to seal the receiving chamber, which bears against the pressure piece (5) on one side and is held on the other side on the inside of an axially oriented collar (8) that circumferentially delimits the opening, wherein the sealing arrangement (12) has a bellows (10) and a concentrically arranged secondary seal (11), and the secondary seal (11) and the bellows (10) are formed in one piece, is designed such thatthat the secondary seal (11), which has a central opening and is more dimensionally stable than the bellows, has a circumferential shell which is attached to the inside of the collar (8) by friction or material interlock, wherein the bottom of the secondary seal (11), which is angled towards the shell, bears against the adjusting spindle (4) with its edge, which is formed as a bead (15) and defines the central opening, and the bellows (10) is connected to the pressure piece (5) by form-fitting, material interlock, or friction interlock with its end, which is formed as a thickening and is radially opposite to the shell.

The present disclosure relates to a bellows seal arrangement having a bellows designed with a controlled shift in effective mean diameter when the bellows is exposed to a pre-determined pressure.

A modular vessel assembly defining an internal chamber suitable to maintain a vacuum within the chamber to support a magnetically confined plasma. The present modular assembly is formed from a plurality of annular modular sections arranged in abutting contact as a stack of annular rings extending around a central axis of the chamber. A sealing arrangement is provided at the interface between the modules of the stack to create a fluid seal configured to maintain at least a partial vacuum within the chamber. The present modular vessel assembly is suitable for use as a confinement vessel within a fusion reactor such as a tokamak.

A boot assembly for a vehicle brake comprises: a flexible boot having an end portion coupled to a housing accommodating at least some components of the vehicle brake including a rotatable body configured to be rotatable by an actuator to move a brake pad and a bearing configured to rotatably support the rotatable body and comprising a non-rotatable bearing race, wherein the boot supports the non-rotatable bearing race; and a boot retainer configured to hold the boot in a fixed position with respect to the housing. Another end portion of the boot is coupled to a linearly movable body configured to be translatable according to rotation of the rotatable body of the vehicle brake to seal an inner bore of the housing. The boot is coupled with one side of the non-rotatable bearing race to limit an axial movement of the non-rotatable bearing race away from the housing.

The invention relates to a hybrid bellows for a height adjustment device of a vehicle, the hybrid bellows (1) comprising a multi-layer base body (2) having a first free end (3) and a second free end (4) and a working chamber (5) which can be formed between the free ends (3, 4), the base body (2) having an inner elastomer layer (6) facing the working chamber (5) and an outer elastomer layer (8) facing the environment (7), the inner elastomer layer (6) has a first material composition and the outer elastomer layer (8) has a second material composition. The hybrid bellows is characterized in that the first material composition and the second material composition differ from each other. The invention also relates to a height adjustment device for a vehicle, comprising such a hybrid bellows (1).

An augmented assembly skin-constrained expandable bellows system includes a top end cap, a bottom end cap, and a bellows attached to and separating the top and bottom end caps, and configured to retain pressurized fluid between the top and bottom end caps. The system also includes nozzles configured to allow fluid to enter and exit the bellows, and a non-extendable skin attached to each of the top and bottom end caps and to the bellows. When the bellows expands via the nozzles, the top end cap is in a first position, and when the top end cap is adjusted from the first position to a second position, the skin is configured to hold the top end cap in the second position and constrain the bellows into a predetermined rigid three-dimensional shape.

A covering system and method for a pitch link of a helicopter include a boot having a bellows, and a cap removably secured to the boot. The boot and the cap are configured to cover at least a portion of the pitch link. The cap is removable from the boot to provide access to the pitch link.

One embodiment of the present invention pertains to a sealing structure for a lifting shaft of an industrial robot, with respect to a rotation driving unit for moving forklifts up and down in an industrial robot, the robot comprising: a first driving module disposed in a vacuum space and in charge of moving the forklifts in a straight line; and a second driving module disposed in an atmospheric space and in charge of rotating and vertically moving the first driving module, wherein the second driving module may comprise a housing forming the exterior thereof, a lifting body disposed in the housing to be able to ascend and including a lifting shaft having therein a rotation shaft for rotating the first driving module, and a bellows surrounding the lifting shaft from the outside to seal the outer surface thereof.

A flexible boot for a constant velocity universal joint includes: attachment portions to a mating member at both ends; and a bent portion provided between the attachment portions and absorbing deformation caused by operation of a constant velocity universal joint. The flexible boot is made of a rubber material obtained by blending 50 to 80 parts by weight of HNBR having an acrylonitrile content of 15 to 21 wt% and 20 to 50 parts by weight of EPDM, the rubber material having an elastic recovery rate of 18% or more at -40 °C in a TR test.

Estimate the temperature of the drive shaft boot. [Solution] A drive shaft boot temperature estimation device for use in an automobile equipped with a grill shutter that is attached to the grill in front of the radiator and can be opened and closed, and a drive shaft boot, the device estimates the temperature of the drive shaft boot based on a trained model obtained by machine learning, which takes as input variables a first parameter that reflects the temperature around the drive shaft boot, a second parameter that reflects the temperature of a heat source close to the drive shaft boot, and a third parameter that has at least one of the vehicle speed and the open / closed state of the grill shutter, and as an output variable the temperature of the drive shaft boot, and the first, second, and third parameters.

To suppress generation of buckling during compression of a bellows.SOLUTION: A bellows is a synthetic resin bellows, and comprises: a crest part that is convex in a radial direction; a trough part adjacent to the peak part in an axial length direction, and concave in the radial direction; and an intermediate part including a midpoint in the radial direction of the apex of the external surface of the crest part and the apex of the external surface of the trough part. A first length, which is a length in the axial length direction between the apex of the external surface of the peak part and the midpoint, is larger than a second length, which is a length in the axial length direction between the apex of the external surface of the trough part and the midpoint.SELECTED DRAWING: Figure 2

The invention relates to a bellows (10) comprising a first connecting area (1), a second connecting area (2), and a bellows body (3) designed as a hollow body and extending in the direction of a longitudinal axis (L), which radially encloses a bellows interior (I), wherein the bellows body (3) has several folds (4) arranged one behind the other in the direction of the longitudinal axis (L) and mutually connected to each other internally and externally, so that the two connecting areas (1, 2) can be moved relative to each other in the direction of the longitudinal axis (L) by an extension movement of the bellows body (3) into an extended position (A) or by a compression movement into a compressed position (K), wherein in the compressed position (K) the folds (4) each lie flat against an adjacent fold (4) on one side (4.1) and are spaced apart from an adjacent fold (4) on the opposite side (4.2).

To provide a dust cover that is less likely to generate a gap between a seal part and a steering shaft.SOLUTION: A dust cover includes: a cylindrical bushing fitted to an outer peripheral surface of a steering shaft and extending along a circumferential direction about a central axis; and a bellows for blocking a gap between a cylindrical member and the bushing. The bellows includes a seal part projecting toward the outer peripheral surface of a steering shaft and including a tip that abuts on the outer peripheral surface. The bellows is softer than the bushing.SELECTED DRAWING: Figure 5

A dust mitigation device (200) for protecting mechanisms is provided. The device (200) comprises a plurality of cylindrical, concentric or nesting rings (206-1, 206-2, 206-3, 206-4) configured to correspond to the mechanism intended for protection; a multi-layered membrane (208-1, 208-2, 208-3) interconnected between said concentric or nesting rings (206-1, 206-2, 206-3, 206-4), wherein the membrane includes a composite material; and front and back flange plates (110, 112) attached to terminal junctures of the mechanism, between which the membrane (208) is tensioned; and wherein the concentric or nesting rings (206) and the multi-layered membrane (208) are arranged to enable controlled collapse and extension of the device for effective containment of contaminants.

A system (100) for detecting damage to a dust boot (102) in a vehicle comprises a pressure sensor (104) functionally coupled to an interior of the dust boot (102), configured to detect pressure fluctuations within the dust boot due to the movement of one or more vehicle parts located therein. An electronic control unit (ECU) (106) is configured to receive a signal from the pressure sensor (104) corresponding to the pressure fluctuation within the dust boot (102) and determine whether the received signal indicates the absence of a pressure fluctuation within the dust boot (102). If the ECU (106) determines that the received signal indicates the absence of a pressure fluctuation within the dust boot (102), the ECU (106) outputs a warning signal indicating damage to the dust boot (102).

The utility model belongs to the technical field of automobile shock absorber accessories, and particularly relates to an automobile shock absorber dustproof sleeve which comprises a rubber corrugated dustproof cylinder, and clamping sleeves are arranged at the top and the bottom of the rubber corrugated dustproof cylinder. The reinforcing rings are arranged in the intersections of the adjacent inclined walls on the rubber corrugated dustproof cylinder respectively; the multiple clamping structures are arranged on the inclined wall of the rubber corrugated dustproof cylinder in an array mode; the number of the reinforcing plates is multiple, and the reinforcing plates are arranged in the inclined wall of the rubber corrugated dustproof cylinder in an array mode through corresponding clamping structures and used for achieving the purpose that the rubber corrugated pipe dustproof cover is arranged on the shock absorber in a sleeving mode for dust prevention. And flying stones are easy to splash and eject onto the rubber corrugated pipe dust cover to damage the rubber corrugated pipe dust cover.

A clamping ring (100) has a ring body (110) with an annular shape. A plurality of fingers (120) distributed around the inside of ring body (110) and extend radially inward from the ring body (110), where each of the plurality of fingers (120) is configured to deform radially. Rigid sections (130) are interspersed with the plurality of fingers (120). Also disclosed is a sealing system including the clamping ring (100).

This invention provides a protective cover for axle springs, which can compactly cover axle springs used in railway vehicles and is less prone to deformation, breakage, or detachment caused by wind pressure. The protective cover 1, which is assembled to axle spring 20 of a railway vehicle and covers the lower outer surface of the elastic portion 23 in the assembled state, includes a corrugated portion 4. This corrugated portion 4 is formed into an integral cylindrical shape from an elastic thin film material and is capable of axial expansion and contraction. In the assembled state, the protective cover 1 indirectly abuts against the inner cylinder 21 via a rubber layer 27A, directly abuts against the outer cylinder 22, and directly abuts against the elastic portion 23 at a position radially separated from the abutment positions of the inner cylinder 21 and the outer cylinder 22.

The invention relates to a bellows (5) for an electromechanical brake booster (1), comprising an elastically deformable base body (20) which is hollow cylindrical and extends axially, wherein the base body (20) is corrugated in longitudinal section with a plurality of wave crests (11) and wave troughs (12), wherein two mutually inclined adjacent legs (13, 14) each lead to a wave crest (11) or to a wave trough (12). It is provided that the two adjacent legs (13, 14) have different folding resistances relative to each other.

A boot of extends along an axis X direction and has a cylindrical shape that is extendable and contractable in the axis X direction. The boot includes a bellows portion alternately having a bellows portion-side peak portion and a bellows portion-side valley portion along the axis X direction, and an extending portion connected adjacent to the bellows portion in the axis X direction and provided adjacent to one end and / or an other end of the boot in the axis X direction. The extending portion is formed so that an outer diameter of an end of the extending portion on a side opposite to a side connected to the bellows portion in the axis X direction is smaller than an inner diameter of the bellows portion-side valley portion of the bellows portion.

Method for widening an elastomeric protective bellows (3) of a vehicle air spring, which is partially connected to a connecting part (4) of the air spring, characterized by the following steps: - Providing an expansion device (1) with a radially extendable mandrel (2), - at least partially sliding the protective bellows (3) onto the pin (2), - radially expanding the mandrel (2) so that the protective bellows (3) is radially expanded beyond its nominal diameter in at least one area, - wherein the protective bellows (3) is removed from the mandrel (2) immediately after expansion and is then partially placed onto the connecting part (4) of the air spring, wherein the connecting part (4) has an outer diameter in the connection area which is larger than the nominal diameter of the protective bellows (3).

A contact-free wheel bearing pre-seal between a wheel carrier, on the one hand, and a wheel hub, a wheel bearing, and / or an axle stub, on the other hand. A sealing ring which is fixed to the wheel hub, the wheel bearing, and / or the axle stub and forms a sealing gap together with a mating contour on the wheel carrier or on a component fastened to the wheel carrier. The sealing ring has radial webs between which cells are formed. The cells are each radially delimited on the outside by a retaining wall, which in turn delimits the sealing gap radially on the inside in order, when the sealing ring rotates, to generate a flow opposed to a breaching of the seal in front of and / or in the sealing gap. There is also disclosed a wheel bearing arrangement with such a contact-free wheel bearing pre-seal.

The invention relates to a hybrid bellows (1) for a height adjustment device (14) of a vehicle, comprising a multi-layered base body (2) with a first free end (3) and a second free end (4), and with a working chamber (5) that can be formed between the free ends (4), wherein the base body (2) has an inner elastomeric layer (6) facing the working chamber (5) and an outer elastomeric layer (8) facing an environment (7), wherein the inner elastomeric layer (6) has a first material composition and the outer elastomeric layer (8) has a second material composition. The hybrid bellows is characterized in that the first material composition and the second material composition differ from each other. The invention also relates to a device for height adjustment of a vehicle, comprising such a hybrid bellows (1).

A module comprising a transmitter and / or receiver or Electromagenetic Radiation 2 adapted to be installed on an aircraft, comprising a housing 3 mounted to the internal structure 4 of the host platfor