Abstract: A hydraulic rotary steering damper with articulate linkage to enable mounting to a vehicle's steering mechanism coaxially, non-coaxially, or at an angle to the axis of steering rotation of the vehicle with the option of a hinged frame mount to attach to a vehicle's frame for the purpose of linking the steering damper to the vehicle's frame.

Abstract: There is described a fluid flow measuring and control device for installation within plumbing. The device comprises a main flow channeling system having an inlet and an outlet for connection to the plumbing, and a bypass channeling system in parallel from the main flow channeling system. A flowmeter is provided in the bypass channeling system for measuring the fluid flow in the bypass channeling system and thereby estimating the fluid flow at the inlet or at the outlet of the main flow channeling system. The flowmeter may comprise a wheel and a pair of movement sensors. A valve such as a solenoid valve can be provided as an on/off control for the plumbing. Using a microcontroller, the device can identify which appliance is used and determine consumption, or detect abnormal use or leaks and close the valve and/or notify a user mobile device.

Abstract: A dampener includes an external reservoir which stores hydraulic fluid due to fluid expansion caused by heat generated by fluid flow through valves that cause a drop in fluid pressure. The primary manifold controls hydraulic fluid flow within the dampener. A diverter valve communicates with the passageways between the dampener and the external reservoir. Hydraulic flow is bi-directional between the primary manifold and the accumulator. Hydraulic fluid flow is restricted when flowing from the primary manifold to the accumulator but is unrestricted when flowing from the accumulator back to the primary manifold and dampener.

Abstract: A torsion device comprising: a first part comprising a first resilient torsion member including: a first support end; a first free end spaced from the first support end; and a first engagement region; a second part comprising a second resilient torsion member including: a second support end; a second free end spaced from the second support end; and a second engagement region; wherein the second part is rotatable relative to the first part about an axis of rotation (A) between a first angular position and a second angular position, and the first and second torsion members are configured to urge the first and second engagement regions together to cause flexure of at least one of the first and second resilient torsion members as the second part rotates relative to the first part from the first angular position to the second angular position.

Abstract: A rotary damper includes a damper motor and a damper housing in surrounding relationship to the damper motor. The damper housing has a connection piece for mounting the damper housing to a first mass. An articulated lever is swingably mounted in relation to the damper housing and connected to a second mass. The articulated lever has a lobe which is movable during a swinging motion of the articulated lever in relation to the damper housing along a movement path between two stops which are connected to the damper housing. A gear mechanism transmits and/or converts a relative rotational movement between the first and second masses to the damper motor for vibration damping.

Abstract: A device adjusts the rotational damping of a steering device such that the rotational damping varies depending on whether the rotational motion about a steering axis is caused by a force acting on the steering device of the vehicle or a force acting on the part(s) of the vehicle contacting the ground. The flow of hydraulic fluid in the steering damper partly or wholly is adjusted by a main valve unit that is coupled together with both an attaching part and a steering device. The opening area of the main valve unit is determined by a relative motion between the attaching part and the steering device such that the flow of the hydraulic fluid in a direction from and to the respective damping chambers of the steering damper is controlled depending on the cause of the rotational movement.

Abstract: A damper device includes an inner part having a cylindrical shape; an outer part including an annular space with a bottom to rotatably or relatively rotatably house the inner part from one cylinder end side; and a viscous fluid filled in the annular space. An outer side of the inner part is formed with a circular groove to fit an outside seal ring. Also, an inner side of the inner part is formed with a circular step surface positioned closer to the one cylinder end side than the circular groove, and positioning an inside seal ring. A depth of the circular groove has a dimension approximately half a thickness of the inner part at a portion forming the circular groove.

Abstract: A snubber for a mining shovel including a dipper body and a dipper door rotatably coupled to the dipper body. The snubber includes a housing having an internal wall defining a fluid-filled chamber, a shaft rotatably coupled to the housing and including a portion positioned within the chamber, a paddle positioned within the chamber, a dam positioned within the chamber, a first valve, and a second valve. Rotation of the dipper door relative to the dipper body causes rotation of the shaft relative to the housing. The paddle is coupled to the shaft such that the paddle rotates with the shaft. The dam and paddle substantially partition the internal chamber into a first portion and a second portion. The first valve controls fluid flow from the first chamber to the second chamber, and the second valve controls fluid flow from the second chamber to the first chamber.

Abstract: The invention relates to a pressurized hydraulic rotation damper intended for use on a multiwheeled vehicle. The rotation damper comprises an outer housing and a lid that together enclose a damping-medium-filled main chamber, which chamber is pressurized by a pressure tank and divided by a delimiting blade/arm into two volumes. The damping medium flows between the two volumes in a duct delimited by at least a first valve and a second valve. These valves throttle the flow between the volumes when the blade moves in an inward and outward motion respectively, starting from an intermediate position where the two volumes are substantially equal in size, to an outer position, in which the blade bears against or is placed close to the inner face of the outer housing. The first valve controls the flow for outward motions and the second valve is used to control the flow for inward motions to either pass through the first valve, through the second valve or through both valves.

Abstract: A damper 1 includes a vessel 4 for accommodating a viscous fluid 3 in its interior 2; hampering walls 5 and 6 for hampering the flow of the viscous fluid 3; a partitioning member 11 which partitions each of interior portions 7 and 8 into two chambers 9 and 10 and is provided rotatably; a communicating hole 13 formed in the partitioning member 11 so as to allow the two chambers 9 and 10 to communicate with each other via a variable passage 12 whose passage cross-sectional area changes; a flow limiting means 14 for limiting the flow of the viscous fluid 3 in the chamber 9 into the chamber 10 through the communicating hole 13, when the internal pressure of the viscous fluid 3 accommodated in the chamber 9 has exceeded a fixed value on the basis of the rotation of the partitioning member 11; and a resilient means 15 for resiliently urging the partitioning member 11 in an R2 direction with respect to the vessel 4.

Abstract: A snubber apparatus comprises a casing defining an inner cavity. A shaft passes through the inner cavity and rotates about its longitudinal axis. The shaft has one or two ends laterally projecting out of the casing and being connected to a moving part of a tool to dampen given motions thereof. A wiper arm is on the shaft so as to rotate therewith the shaft, with a free end in close proximity to the surface portions of the inner cavity. The free end has an arcuate contour complementarily corresponding to a circumferential surface portion. A dam extends from the circumferential surface portion into close proximity to the wiper arm, to divide the inner cavity in two chambers, with movements of the wiper arm changing the volume of the chambers. A hydraulic circuit controls a flow of fluid between chambers to oppose a force to rotation of the shaft.

Abstract: An identical engagement hole 12b is formed in each of first and second brackets 1, 2. A first engagement portion 31c is formed in a damper body 31 of a rotary damper 3. A distal end portion of a rotor 32 of the rotary damper 3 is non-rotatably inserted in an adapter 4. A third engagement portion 46 is formed in an outer circumference of the adapter 4. The first engagement portion 31c is non-rotatably inserted in the engagement hole 12b of the first bracket 1. The third engagement portion 46 is non-rotatably inserted in the engagement hole 12b of the second bracket 2.

Abstract: A fluidic dampening device having a housing containing a rotatably mounted wiper that sealingly moves within the housing. The housing contains a bypass channel. In a first embodiment, a control shaft is rotatably mounted within the housing. The control shaft has discrete indentations of varying sizes and is so located in the housing that either no indentation or only one indentation lies within the bypass channel at a given time. A second embodiment differs from the first in that a continuous indentation is cut around the shaft in such a manner that for a first area there is no cut in the shaft and then the indentation commences and becomes increasingly deeper as it progress around the shaft until the continuous indentation stops upon reaching the first area. The bypass channel is completely open when the deepest point of the indentation has been rotated into the bypass channel.

Abstract: A dampening assembly for a portable electronic device includes a housing. The housing includes a top portion and a bottom portion. A pivot arm is pivotably coupled to the bottom portion of the housing. A reservoir is defined between the top portion and the bottom portion. The reservoir includes at least one of a fluid and a viscous material. A first portion of the pivot arm is disposed within the reservoir. A second portion of the pivot arm extends through and above the top portion of the housing.

Abstract: A first cam mechanism 8 is provided between outer portions of opposite surfaces of a rotor 2 and a piston 3. A shaft portion 2c is integrally formed in a central portion of the opposite surface of the rotor 2 opposed to the piston 3. A pair of outwardly projecting portions 9a, 9a are formed in an outer peripheral surface of the shaft portion 2c. A through hole 3a in which the shaft portion 2c is inserted is formed in the piston 3. A pair of inwardly projecting portions 9b, 9b are formed in an inner peripheral surface of the through hole 3a. The outwardly projecting portions 9a, 9a are arranged such that each of the outwardly projecting portions 9a can pass through a gap between the inwardly projecting portions 9b, 9b and the inwardly projecting portions 9b, 9b are arranged such that each of the inwardly projecting portions 9b can pass through a gap between the outwardly projecting portions 9a, 9a.

Abstract: A steering damper can generate a smaller damping force according to a first damping force characteristic or a larger damping force according to a second damping force characteristic by controlling a flow of hydraulic oil during a steering operation of a steering member. When the associated vehicle is running at a relatively low or medium speed and is not accelerating, and if an operational speed of the steering damper is lower than a predetermined value, damping force according to the first damping force characteristic can be generated in the steering damper. On the other hand, when the operational speed of the steering damper is equal to or higher than the predetermined value, damping force according to the second damping force characteristic can be generated in the steering damper.

Abstract: A steering damper comprises two oil chambers (R1, R2) delimited in a housing (1, 7) by a partitioning member (2, 8), and a damping valve (2a, 2b) which imposes a drag on a flow of working oil between the two oil chambers (R1, R2). By further comprising an oil passage (5) connecting the two oil chambers (R1, R2), a pair of check valves (5a, 5b) which prevents oil flow from each of the two oil chambers (R1, R2) into the oil passage (5), and a bypass passage (6) connected to the oil passage (5) between the pair of check valves (5a, 5b) and having an opening that opens onto the interior of the housing (1) in the vicinity of the neutral position of the movable partitioning member (2, 8), the steering damper enables the movable partitioning member (2, 8) to return quickly towards the neutral position.

Abstract: An improved fluidic dampening device having a first clamp attached to the housing of a fluidic dampening device near the left side of such housing and a second clamp attached to such housing near the right side of the housing to create apertures for accommodating handlebars. Each upper segment is releasably connected to each respective lower segment, although a first end of each upper segment may be rotatably connected to each respective lower segment while a second end is releasably connected. The housing is preferably so attached to the first clamp and to the second clamp that the uppermost portion of the housing is lower the lowermost portion of the apertures. Preferably, the lower segments are attached to the top of a triple clamp; but neither the attachment of the first clamp to the housing nor the attachment of the second clamp to the housing involves the triple clamp.

Abstract: Braking device comprising a rotor (3; 13) suitable for rotating around a main axis (X) in a substantially cylindrical seat (9; 19) suitable for containing a viscous fluid, wherein said seat (9; 19) is offset with respect to the main axis (X) and the rotor (3; 13) is provided with at least one rocking vane (4; 14) which is arranged substantially parallel to the main axis (X) for translating with an alternating motion with respect to the rotor (3; 13).

Abstract: An improved stabilizer for the steering of a vehicle. The stabilizer comprises a housing containing one or more sector-shaped chambers with a wiper rotatably mounted in the housing. For each chamber a paddle extends from the rotor of the wiper into the chamber. The wiper moves sealingly past the housing. For each paddle a bypass channel allows fluid on one side of the paddle to move to the other side of the paddle. A valve in the bypass channel controls the degree of damping produced by the stabilizer. The valve has a control shaft in the center of the rotor, and on the shaft there is a continuous indentation around such shaft with there being no indentation in a first area of the shaft and then the indentation commencing and having an increasingly larger cross-sectional area as the indentation progress around the control shaft.

Abstract: A device (10) for braking the movement of a movable member with respect to a support structure is described. The device comprises a casing (12) fixable to the movable member (M) or to the structure (W) and defining a chamber (16; 16?; 16??) containing a viscous braking fluid, and a rotor (14), operationally associable with the movable member (M) or with the structure (W), and which is rotatably connected to the casing and is mounted thereon so as to close the chamber (16; 16?; 16??). The rotor comprises a piston-like member or portion (31), mounted so as to slide within the chamber in such a way as to separate the chamber into separate regions (16a, 16b) in mutual fluid communication.

Abstract: A fluidic stablilizer with remote control having every portion of the circuit which connects the housing and the remote control valve within a range that will permit fluid placed in the circuit to flow freely at high speed but that will also create the fluid pressure necessary for effective damping. Furthermore, the cross-sectional area for every portion of the circuit is maintained within such range, preferably by constructing all portions of the circuit between the housing and the remote control valve with stainless steel braided line. And an attachment structure combined with a depression in the bottom of the rotatable wiper contained within the housing except with an aperture exposing the bottom of the rotatable wiper to the outside facilitates mounted the housing below the handlebars of a vehicle since the depression is constructed with such dimensions as to accommodate a stem nut at the top of a steering shaft.

Abstract: A rotary damper having an oil chamber within a housing which is divided into two by a vane, and generates a damping force by passing operating oil between the two oil chambers when the vane oscillates, has a shaft supporting the vane to allow oscillation in relation to the housing, fixed to a base part of the vane, and seal washers for dividing in a fluid-tight manner between a bearing rotatably supporting the shaft on the housing shaft, and the oil chamber, is provided on the base part of the vane.

Abstract: A rotary damper for damping oscillation of a motorcycle front tire includes a vane swingably mounted inside the rotary damper between left and right oil chambers, passages placing the oil chambers in fluid communication with one another, front chambers in communication with the passages to secure a pressure-receiving area adjacent the vane when the vane is at one of its extreme swing positions and begins swinging back towards the center of the damper, and grooves in fluid communication with the front chambers, wherein the grooves are formed shallower than the front chambers, and the passages are opened to the bottom of said grooves.

Abstract: A toroidal rotary damper apparatus includes a housing having a toroidal inner housing surface and a piston moveable in the housing having a curved outer peripheral piston surface in engagement with the inner housing surface. A fluid barrier is attached to the housing and located in the housing interior. A flow control passageway defined by either the piston or the fluid barrier controls passage of damper fluid when there is relative rotational movement between the piston and the housing to dampen the forces causing relative rotational movement.

Abstract: A steering damper in a motorcycle includes a vane partitioning a chamber in a damper housing into two oil chambers, wherein hydraulic fluid flows between the two chambers to generate attenuating force. The steering damper also includes a damper shaft connected to the vane and supporting the vane for rocking motion with respect to the housing, and a hydraulic pressure control valve. The housing is attached to a head pipe, and the damper shaft is attached to a steering system. When the head pipe is to be attached to the housing, the housing is extended rearwardly behind a top bridge, and a linear solenoid for driving and controlling the hydraulic pressure control valve is attached to the housing and disposed below the extension thereof.

Abstract: Controlled oscillating damper, comprising: a housing (12) provided with a cavity (14), an oscillating element (18) moving sealingly within the cavity (14), in which the housing (12) and the oscillating element (18) have respective walls defining at least one chamber (44) filled with magneto-rheological or electro-rheological damping fluid, and at least one electrically controlled excitation device (46) equipped with at least one fluid passage (52) which a fluid flow gets through during the motion of the oscillating element (18). The excitation device (46) is stationary with respect to the housing (12) and is arranged so as to divide the damping chamber (44) into two sections of variable volume (44a, 44b) communicating one with the other through the passage (52).

Abstract: A damper includes a housing having a cylindrical shape and filled with a viscous fluid, a first rotor rotatably received in the housing and having a first connecting portion formed at an end portion thereof, and a second rotor rotatably housed in the housing coaxially with the first rotor and having a second connecting portion formed at an end portion thereof. The first and second connecting portions engage to allow the first and second rotors together, and forms a space therebetween to allow the viscous fluid to pass therethrough. An elastic member urges the first connecting portion and the second connecting portion to connect together, and accumulates an elastic force in a state that the connection between the first and second connecting portions is released.

Abstract: A motor-vehicle suspension having oscillating arms, in which one of the arms is formed by the casing of a rotational shock-absorber, wherein the oscillating piston of the shock-absorber is connected to the structure of the motor vehicle. Preferably, the casing of the rotational shock-absorber is also used for the anchorage of a respective end of a leaf spring, which constitutes the elastic element of the suspension.

Abstract: A rotary damper device includes a case in which a viscous fluid is filled and sealed, a rotation shaft relatively rotatably supported by the case, a rotation vane formed protruded from the rotation shaft, and a check valve mounted on a tip part of the rotation vane. A passage where the viscous fluid passes through is formed in the rotation vane. The check valve is provided with an opposing face part facing the passage and a frame body interposing the rotation vane. An elastic member for energizing the opposing face part of the check valve for closing the passage of the rotation vane is formed in either the rotation vane or the opposite side of the frame body of the opposing face part.

Abstract: A rotary damper includes a cylindrical member having walls on an inner peripheral surface of a cylindrical chamber along a radial line, and a rotor member having vanes moving along the inner peripheral surface of the cylindrical chamber. A resistance force of a viscous fluid filled in the cylindrical chamber is applied to the vanes when the cylindrical member rotates relative to the rotor member. The rotor member is formed of a thermoplastic resin containing inorganic filler or fiber. Thus, the rotor member having high strength can be obtained.

Abstract: A steering device for a two-wheeler of the present invention includes: a frame; a support member for a front wheel; a steering shaft connecting the support member to the frame so as to be rotatable about an axis thereof; and a rotary type steering damper providing a hydraulic resistance force in no matter which direction the support member rotates with respect to the frame. The steering damper has a vane adapted to swing in synchronism with rotation of the support member, oil chambers defined on both sides of the vane and filled with working fluid, a flow passage causing working fluid to flow from one oil chamber to the other oil chamber as the vane swings, and a damping valve arranged in a flow passage for the working fluid, and an opening of the damping valve is varied by a signal from outside to thereby generate a damping force optimized according to the travel condition.

Abstract: A rotary damper (10) includes a stationary member (12) and a rotating member (14) provided within the stationary member (12) so that a gap (16) is defined between the rotating member (14) and the stationary member (12). The rotating member (14) further includes a central shaft (18) provided therein. A viscous fluid (19) is provided in the gap (16) and has an associated shear that provides a velocity damping within the gap (16). A differential growth in the gap (16) caused by temperature variation compensates for temperature damping variation. A compliant member (20) is provided within the stationary member (12) for providing thermal compensation. A secondary hermetic seal (26) is provided on the stationary member (12) for permitting limited rotation, defining a vacuum environment and preventing viscous fluid leakage to an external environment.

Abstract: A liquid pressure type steering damper system for generating a damping force for preventing a handle from being swung due to a kick-back upon a disturbance wherein the generation of the damping force is nonlinear so that the steering angle would not be enlarged so much even if the kick-back becomes greater. A liquid pressure type steering damper is provided with a restriction passage for a working liquid and a solenoid-type control valve for varying the passage sectional area of the restriction passage. A needle portion is formed at the tip end of a plunger constituting the solenoid valve and is made to advance and retract in a restriction portion connected to a bypass passage.

Abstract: A steering damper for reducing the inertia of steering that is attached in a low position relative to the steering shaft. The upper portion of a steering shaft is fitted in the center of the rear of a top bridge as a fitting part and a lower screw part of a shaft is tightened in the fitting part and is integrated with the fitting part. The shaft is provided with a shaft main part having a small diameter extending in an axial direction of the steering shaft, when the shaft main part is made to pierce a turning shaft in the steering damper. A steering nut is attached to an upper screw part at the upper end and the upper screw part is tightened. The steering damper and the top bridge are fixed to the upper portion of the steering shaft by jointly fastening. Hereby, a steering nut heretofore provided under the steering damper can be omitted and a position in which the steering damper is attached can be lowered by the quantity.

Abstract: A steering damper system for motorcycles provided for generating an adjustable damping force for restraining the shaking of the steering system at the time of disturbance. The system includes a cross member laid between the front portions of the mainframes branching to the left and right from the head pipe and extending to the rear, and a steering damper mounted at the center of the cross member. A sector gear projects forward from the housing, and the teeth thereof are inserted through the opening formed on the head pipe, and are engaged with the drive gear integrally mounted around the steering stem rotatably supported within the head pipe. The resulting steering damper provides the desired adjustable damping force without adversely increasing the inertia of the steering system.

Abstract: A magnetorheological fluid actuated damper. At least a first and a second cylinder with the first cylinder positioned axially within the second cylinder are provided. A gap is formed between the cylinders. The second cylinder is mounted to a stationary mount of the vehicle chassis and a control arm is mounted at an end of the first cylinder. The first cylinder is mounted on bearings to allow it to rotate relative to the chassis. The gap between the cylinders contains a magnetorheological fluid having an adjustable viscosity in reaction to the application of a magnetic field. A magnetic field is generated over the fluid in the gap.

Abstract: Described herein is a motor-vehicle suspension of the type with oscillating arms, in which one of said arms is formed by the casing of a rotational shock-absorber, the oscillating piston of which is connected to the structure of the motor vehicle. Preferably, the casing of the rotational shock-absorber is also used for the anchorage of a respective end of a leaf spring, which constitutes the elastic element of the suspension.

Abstract: A rotary damper for use in motor vehicle suspensions comprising a rotor disposed within damping fluid in a fluid chamber of a casing to form inner fluid volume and outer fluid volume, with first valve and second valve for controlling flow between the inner fluid volume and the outer fluid volume, and an accumulator using closed cell foam as a compressible material for fluid fill variation and thermal expansion. First valve controls flow from the outer fluid volume to the inner fluid volume for one direction of rotation of the rotor, while second valve controls flow from the inner fluid volume to the outer fluid volume for the opposite rotation of the rotor. Thus, the valves are configured to provide independent control of damping for each direction of rotation. A valve holder supporting the valves and providing flow passages is designed for powdered metallurgy fabrication.

Abstract: A damping device with variable damping force, including a cylinder, in which a piston rod is arranged axially movably, and an adjustable damping valve which is activated as a function of the compression travel of an axle part. The adjustable damping valve is activated by a generator device. The generator device includes an equidirectional device which causes an equidirectional regulating variable to take effect on the adjustable damping valve independently of the compression direction.

Abstract: A fluidic dampening device having a housing containing a rotatably mounted wiper that sealingly moves past the side walls, bottom, and peripheral wall of the housing as well as a faceplate attached to the top of the housing. The housing contains a bypass channel that has a first port in the first side wall of the chamber and a second port in the second side wall of the chamber. A control shaft is rotatably mounted within the housing. The control shaft has indentations of varying sizes formed at distinct points around the shaft with areas having no indentation between each consecutive pair of indentations and is so located in the housing that either no indentation or only one indentation lies within the bypass channel at a given time. When no indentation has been rotated into the bypass channel, the control shaft completely blocks the bypass channel. Optionally, channels exist in the bottom of the faceplate or in the portion of the housing which forms the bottom of the chamber.

Abstract: A pneumatic type of stabilizer for an automobile uses pressurized air as an elastic means of the stabilizer. The stabilizer comprises a cylindrical case in which a left rotating rod and a right rotating rod, each having a radial blade, respectively, are pivotally mounted, a rotator connected with an outer end of the rotating rods and protrudes out of the cylindrical case, a connecting rod connected with the ends of the rotators, and two arms connecting the connecting rods with two suspension arms of a suspension system.

Abstract: A damping device for the spinning rotor (3) of an open-end spinning device (1). The spinning rotor (3) is fixed radially and axially via a magnet support arrangement (43), supported in a galvanically separated manner as regards the housing of the spinning device (1) and rotates with a high rotary frequency. The damping device (42) converts oscillations occurring especially during the acceleration phase and when passing through the natural frequency range directly into friction losses.

Abstract: A steering damper particularly for mountain bicycles of the type having a steer-tube including a cylinder having closures at the ends filled with oil of high viscosity. Within the cylinder there are a dam and vanes. The steering damper is integrated with the steer-tube and with the handlebars and steer-stem. The vanes of the steering damper are connected to the frame and are fixed. The housing and dam connected internally to the housing are disposed in, and connected to, the steer-tube so that when the handlebars are rotated, the housing and dam are rotated relative to the vanes. When the handlebars are being displaced from center, pressure is applied to the oil between the dam and a vane and the movement is damped. On the return stroke of the handlebars, the one-way valve in the vane involved is open, the oil between the dam and the vane is discharged, pressure is reduced and the damping is suppressed.

Abstract: Apparatus for connection to relatively moveable first and second structural members to damp such relative movement. The damper apparatus includes a damper housing defining a curved damper housing interior for attachment to a first structural member and a curved damper element for attachment to a second structural member and moveable within the curved damper housing interior along a curved path of movement.

Abstract: A steering damper particularly for a bicycle which is integrated into the bicycle. The damper includes a housing closed at the top by a cap from which sidewalls extend and at the bottom. The housing contains a damping medium. Within the housing thee is a dam connected to the housing and a single vane connected to a shaft which passes through the housing. There is an opening in the shaft which communicates with the vane to circulate the medium during the damping when the bicycle departs from the path in which it is being directed and during the suppression of the damping when the bicycle returns to the path along which it is directed. The effective cross-section of the opening in the shaft is of sufficient magnitude to permit unrestricted flow of the medium. The housing and dam are supported within the steer-tube by the clamp from the steer-stem and are connected to the clamp by a tapered bearing rotatably with the steer-tube as the steer-tube is rotatable by the handlebars.

Abstract: In order to additionally develop a conventional steering valve in such a way that it has a simple and economical design and is insensitive to pressure pulsations, a conventional steering valve is additionally developed by arranging at least one essentially coaxial chamber that extends in the shape of an arc and can be charged with hydraulic pressure either directly or indirectly on the input shaft or the output shaft, with at least one piston element that is directly or indirectly connected to the other shaft being arranged in the aforementioned chamber such that it can be moved along an essentially arc-shaped path.

Abstract: A rotary damper has a cylindrical casing having a chamber filled with a viscous fluid, a rotor rotatably mounted in the cylindrical casing, a movable valve mounted in the cylindrical casing for adjusting a flow of the viscous fluid in the chamber, a flange mounted in the casing and having a pair of through holes defined therein and communicating with the chamber, and a torque adjustment disk angularly movably mounted in the casing and having an orifice held in communication with the through holes. The orifice has a cross-sectional area varying progressively from an end thereof toward an opposite end thereof, wherein a torque applied by the rotor can be adjusted by angularly moving the torque adjustment disk.

Abstract: A brake-action knee joint for a leg prosthesis includes a closed displacer chamber which concentrically surrounds the joint pin over its circumference, at least partially, is preferably filled with hydraulic oil, and is arranged in the associated end of the central part of the joint. The joint pin is designed as a rotary piston and is connected in torsionally rigid fashion to the upper part of the joint. The joint pin divides the closed displacer chamber into an extension chamber and a flexion chamber, which are connected to one another by way of an oil line which can be completely or partially closed by a valve plunger.

Abstract: In a suspension system of a vehicle such as an automobile, a rotary damper having two relatively rotatable damper members is incorporated therein to damp the bounding and rebounding movement of a vehicle wheel, one of the damper members being incorporated in a carrier for rotatably supporting the vehicle wheel such that a damper rotation axis of the rotary damper is in alignment with a wheel rotation axis.