Abstract: A protective enclosure for an electronic device is provided. The protective enclosure includes a first case member, a second case member, a rigid plunger, and an electrical conductor. The second case member is hingeably attached to the first case member to form a shell that includes a watertight enclosure for the electronic device. The rigid plunger is adapted to transmit a mechanical motion from outside the shell to the electronic device inside the shell. The electrical conductor includes an electrical plug to mate to an electrical jack of the electronic device in the watertight enclosure to electrically connect the electronic device to a device outside the shell.

Abstract: A storing box is formed with a unit storing room storing an electronic control unit. The storing box is formed with a latching part by which an electric wire or a connector connected to one end of the electric wire is caught. The electric wire passes through an inner side of the unit storing room and is drawn out from a storing opening which is an entrance for storing the electronic control unit.

Abstract: A method for making an hermetic and electrically insulating feedthrough in the metal wall of a housing of a device, preferably of an active medical device, is disclosed. The method includes: a) forming electrically insulating layers (24, 26) on each of the internal and external sides of the wall (10), b) on the internal side of the wall, forming a non-through groove with a closed contour (30) defining in the wall a metal islet (28) that is physically and electrically isolated from the rest of the wall, by removing the entire thickness of the electrically insulating internal layer (26) and the wall (10), leaving intact a sufficient thickness of the electrically insulating external layer (24) so that the external layer mechanically supports the metal islet, and c) on the external and internal sides respectively, exposing pads (34, 36) for making an electrical contact to the metallic islet, by a localized removal of material of the electrically insulating external and internal layers (24, 26), respectively.

Abstract: In order, in the case of a cable feedthrough comprising a cable fixing unit with a fixing housing which is provided with a cable fixing member and a holding section as well as a shield contact element making contact with a cable shield of a cable guided through the cable feedthrough, to configure the cable fixing unit as simply and inexpensively as possible, on the one hand, and, on the other hand, to provide an electrically conductive connection between the cable shield and a wall section bearing the cable feedthrough which is as good as possible it is suggested that the cable feedthrough have a mounting unit which can be connected to a wall section of an appliance, that the mounting unit be connectable or connected to the cable fixing unit in a form locking manner and that the mounting unit be designed such that it provides an electrically conductive connection between the shield contact element and the wall section.

Abstract: A method of fabricating electrical feedthroughs selectively removes substrate material from a first side of an electrically conductive substrate (e.g. a bio-compatible metal) to form an array :of electrically conductive posts in a substrate cavity. An electrically insulating material (e.g. a bio-compatible sealing glass) is then flowed to fill the substrate cavity and surround each post, and solidified. The solidified insulating material is then exposed from an opposite second side of the substrate so that each post is electrically isolated from each other as well as the bulk substrate. In this manner a hermetic electrically conductive feedthrough construction is formed having an array of electrical feedthroughs extending between the first and second sides of the substrate from which it was formed.

Abstract: A wire harness routing structural part reduces the number of components for routing a wire harness within a door. The wire harness routing structural part includes a wire harness incorporating a main path wire and a different path wire, a portion of the wire harness being fixated to a body, and a protector placed on an interior of the door. The protector includes an accommodation part and a different path guide portion, the accommodation part having an extraction opening for extracting the wire harness to the interior of the door and accommodating the wire harness with a space enabling the wire harness to be redirected. The different path guide part guides the different path wire of the wire harness extracted through the extraction opening on a path different from that of the main path wire of the wire harness and following an outer surface of the accommodation part.

Abstract: Systems, apparatus and methods are described for purposes of initiating a response to detection of an adverse operational condition involving a system including a drill rig and an inground tool. The response can be based on an uphole sensed parameter in combination with a downhole sensed parameter. The adverse operational condition can involve cross-bore detection, frac-out detection, excessive downhole pressure, a plugged jet indication and drill string key-holing detection. A communication system includes an inground communication link that allows bidirectional communication between a walkover detector and the drill rig via the inground tool. Monitoring of inground tool depth and/or lateral movement can be performed using techniques that approach integrated values. Bit force based auto-carving is described in the context of an automated procedure.

Abstract: A method of characterizing a formation is disclosed. A well bore is drilled in the formation. Cuttings are retrieved from the well bore while drilling the formation and a hyperspectral image of the cuttings is continuously obtained. The hyperspectral image of the cuttings is analyzed to determine formation characteristics.

Abstract: A device for limiting the flow of drilling fluid through a section of drill string includes a body with a hole in the periphery. Flow enters the device through one axial end, at least a portion of the flow exits through the other axial end. Some of the fluid flow can be diverted through the peripheral hole. A spring-biased axial piston has an approximately constant force throughout its range of travel. The piston moves axially in response to the changing fluid flow rate to ensure that a constant amount of flow exiting the axial end of the tool is achieved while diverting away excess flow through the side.

Abstract: A subterranean drilling system may include a drill string and a rotary drill bit coupled to the drill string. The rotary drill bit may include a bit body and a cutting element coupled to the bit body, with the cutting element being structured to rotate in response to torque applied to the cutting element. The system also may include a cam assembly coupled to the drill string, a cam follower assembly in contact with a cam surface of the cam assembly, and a torque-applying structure coupled to the cam follower assembly. The torque-applying structure may be configured to apply torque to the cutting element in response to relative rotation between the cam assembly and the cam follower assembly.

Abstract: A drill bit is disclosed, comprising: a drill bit head having a cutting face with one or more fixed cutting elements; a flow passage extending from the center towards the gage of the bit which has been designed to increase the velocity across the cutting elements.

Abstract: A roof-bolt drill bit has a bit body that is rotatable about a central axis, a coupling pocket defined in the bit body, and at least one cutting element mounted to the bit body, the at least one cutting element having a non-cylindrical periphery. The at least one cutting element includes a cutting face, a cutting edge adjacent the cutting face, a back surface opposite the cutting face, and a side surface extending between the cutting edge and the back surface, at least a portion of the side surface of the at least one cutting element being bonded to a side surface of the coupling pocket. The roof-bolt drill bit includes a coupling projection extending from the at least one cutting element, the coupling projection being bonded to a coupling recess defined in the bit body.

Abstract: The weighing apparatus is for automatically weighing trash that is separated from a fiber sample. It includes a scale, a weigh pan disposed on the scale, a cleaner for passing a cleaning element across a surface of the weigh pan when the scale is not taking a weight measurement, and a controller for selectively controlling operations and sequencing of the scale and the cleaner.

Abstract: A force-measuring device (1) for a gravimetric measuring instrument has a stationary part (11) and a load-receiving part (12). Parallel guide members (14, 15) connect the receiving parts. The device also has at least one balance beam (19) connected to the load-receiving part through a coupling member (17) acting on a first lever arm (18) thereof, and which, at a second lever arm (20) thereof, is connected to a measurement transducer (22) which is arranged on the stationary part. Further levers (29, 30) can be arranged, respectively, between the first lever arm and the load-receiving part, and between the second lever arm and the measurement transducer. At least one sliding weight (23, 23A, 23B) is arranged on the at least one balance beam, wherein the position of each of the sliding weights present can be varied in a controlled way by means of at least one drive mechanism.

Abstract: A portable electronic device includes a housing, a pressure sensor, a signal processing module, an analog-to-digital converting module, a processor, and a setting keypad. The housing supports an object to be weighed. The pressure sensor is mounted on the housing and outputs an analog voltage signal that varies with a pressure exerted on the pressure sensor. The signal processing module amplifies and filters the analog voltage signal. The analog-to-digital converting module converts the analog voltage signal into a digital signal. The processor calculates a weight exerted on the pressure sensor according to the digital signal and calibrates the weight of the pressure sensor when the setting keypad is activated.

Abstract: A motorized vehicle includes a pair of opposed wheels and a seat which is mounted so that it can rotate about a vertical axis. The rotational position of the seat is sensed by at least one sensor, such as a potentiometer or rotary encoder, which produces an output signal. This signal is input into a control system which rotates the wheels to steer the vehicle based on the rotational position of the seat.

Abstract: A working machine having a chassis, a first track assembly including a first track mounted for movement around a first track support, the first track assembly being mounted to the chassis by at least a first beam, the first beam being moveable relative to the chassis to vary the distance between the chassis and the first track assembly, a second track assembly including a second track mounted for movement around a second track support, the second track support defining a second inner face, the working machine having an extended position and a retracted position such that the first track assembly is spaced further from the second track assembly when in the extended position than when in the retracted position, wherein when the working machine is in the retracted position a first portion of the first beam is positioned outboard of the second inner face.

Abstract: A self-propelled device is provided including a drive system, a spherical housing, and a biasing mechanism. The drive system includes one or more motors that are contained within the spherical housing. The biasing mechanism actively forces the drive system to continuously engage an interior of the spherical housing in order to cause the spherical housing to move.

Abstract: A wheel loader (1) has a tire (5). The wheel loader (1) includes a hydraulic pump (11), a hydraulic oil tank (7) disposed at a position higher than the hydraulic pump (11) and connected to the hydraulic pump (11), a check valve (12) disposed at a position lower than the hydraulic oil tank (7) and connected to the hydraulic oil tank (7), a filter (13) disposed at a position lower than an upper surface (US) of the tire (5) in a side view and connected to the check valve (12), and a pipe (14) extending to a first position (H1) lower than the check valve (12) and further extending from the first position (H1) to a second position (H2) as a higher position than the check value (12) is set as the second position (H2), and connected to the filter (13) at the second position (H2). Accordingly, it is possible to provide a work vehicle capable of inhibiting a hydraulic oil from spilling out in exchanging the filter (13).

Abstract: Disclosed herein is a mounting structure for an in-wheel motor system. The mounting structure includes the in-wheel motor system installed in a wheel of the vehicle, and a torsion beam axle (TBA) assembly to fix the in-wheel motor system to a vehicle body, wherein a rear portion of a motor housing includes a step portion formed in a stepped manner to have a decreased diameter, and a ring-shaped fastening face vertically arranged from the step portion, and the TBA assembly includes a trailing arm provided with a through hole to surround the step portion of the motor housing, a mount integrated with the trailing arm to fix the trailing arm to a vehicle body, and a plurality of fastening bolts to fix the motor housing to the trailing arm, wherein, when the step portion is fitted and coupled into the through hole, the fastening face closely contacts the trailing arm.

Abstract: A battery-powered forklift including a fork placed at an anterior portion of a vehicle body, and a counter weight placed at a posterior portion of the vehicle body, the battery-powered forklift running by electric power of a battery mounted on the vehicle body, wherein a concave portion that is open in a longitudinal direction is formed at an upper surface of the counter weight, the battery is mounted on a position above a rear wheel of the vehicle body while at least a part of the battery overlaps with the counter weight, and the battery is removable toward a rear of the vehicle body through the concave portion of the counter weight.

Abstract: An object of the present invention is to efficiently heat a vehicle cabin of a fuel cell vehicle by utilizing heat of air discharged from a fuel cell stack. In a fuel cell vehicle in which an exhaust duct configured to discharge air from a fuel cell stack is arranged below a floor, the exhaust duct includes: a lower surface wall facing at least a lower surface of the floor with a predetermined gap therebetween; and a pair of side walls extending from right and left side portions of the lower surface wall toward the lower surface of the floor, and the floor is configured to be heated by the air flowing in the exhaust duct.

Abstract: A battery box includes a flange, a side wall and a bottom wall. The flange is connected to an inner peripheral edge of an installation hole formed in a floor panel of a vehicle. The side wall gently continues with the flange, and is extended downward. The bottom wall, has a periphery gently continuing with the side wall, and is formed with at least one open hole in a center of the bottom wall. Seat portions are projected upper than the bottom wall. At least one seat portion is disposed at each both sides of the open hole. A bottom cover closes the open hole. A corner portion gently continues with the side wall and the bottom wall forming curved surface. A center of curvature of the curved surface is set inside a corner of a battery to be placed on the seat portions.

Abstract: Rule-based intoxicating substance testing associated with vehicles. At least some of the various embodiments are methods including: receiving a signal that a prospective driver intends to drive a vehicle; retrieving at least one previously stored rule regarding intoxicating substance testing associated the vehicle; retrieving data relevant to the rule; determining whether intoxicating substance testing is indicated by the rule; enabling the vehicle responsive to an indication that intoxicating substance testing is not indicated; and administering an intoxicating substance test to the prospective driver responsive to an indication that an intoxicating substance test is indicated. And if the intoxicating substance test is administered: enabling the vehicle responsive to the prospective driver passing the intoxicating substance test, the enabling by the onboard device; and disabling the vehicle responsive to the prospective driver failing the intoxicating substance test, the disabling by the onboard device.

Abstract: A motor vehicle has a body (1) having a plurality of bearings (5, 6, 7). The bearings (5, 6, 7) are disposed and configured for mounting a supporting structure (14) that houses an electric drive unit (11) that includes an electric drive motor (12) and a high-voltage battery (13) for providing electric energy. The bearings (5, 6, 7) also are disposed and configured for mounting an internal combustion engine (8) and a transmission (9) connected to the internal combustion engine (8). Thus, the motor vehicle does not have to be redesigned depending on whether the motor vehicle is powered by an electric drive unit (11) or an internal combustion engine (8).

Abstract: A board-like division member is provided that extends in a vehicle body transverse direction so as to divide a portion of the engine room into an upper region and a lower region along in an engine room height direction. An engine is mounted downwardly of the division member. An exhaust treatment apparatus is mounted upwardly of the division member for treating exhaust gas from the engine. An air discharge portion is formed in a lateral face region of the hood which corresponds to a position of the division member in the engine room height direction. Air present inside the engine room is discharged to the outside through this air discharge portion.

Abstract: The invention relates to an electromechanical steering system having an electric servomotor (1) which drives a worm shaft (2) which meshes with a worm gear (7) which is arranged on a steering shaft (8), wherein the worm gear (7) is operatively connected to an input shaft of a steering gear, and wherein the worm shaft (2) and the steering shaft (8) are mounted rotatably in a common gearbox casing (9), in which the worm shaft (2) has a free end (12) which is remote from the motor and is mounted in a rolling bearing (13) with an inner ring (14), rolling bodies (15) and an intermediate ring (16), wherein the intermediate ring has an inner running surface for the rolling bodies (15) and an outer running surface for outer rolling bodies (17), and wherein the inner running surface and the outer running surface of the intermediate ring (16) are arranged eccentrically with respect to one another.

Abstract: A ceiling speaker assembly is disclosed. In one or more embodiments, the ceiling speaker assembly includes a three-dimensional support frame attached to a perforated grille. The support frame is configured with a speaker aperture adjacent to which a speaker is mounted and a port aperture. The speaker aperture and port aperture are configured such that the speaker aperture is in communication with the front of the speaker and the port aperture is in communication with the rear of the speaker. In one or more embodiments, the support frame includes a horn cavity that functions as an acoustical cross-over such that higher frequencies generated by the speaker are emitted primarily through the speaker aperture and the lower frequencies generated by the speaker are emitted primarily through the port aperture.

Abstract: A volute for a radial turbomachine is proposed. The turbomachine includes a radial compressor or a radial turbine. The volute is in particular for a radial compressor. The volute has a substantially annular cavity which is delimited at least by a first radial side surface. At least one substantially annularly circumferential groove is formed in the side surface.

Abstract: A noise suppressor system for attachment to a firearm including a barrel having a longitudinal axis. The noise suppressor system including the combination of: a flash suppressor adapted to be attached to the muzzle of the barrel coaxially therewith, a noise suppressor including a proximal mount assembly having a bore for coaxially receiving the flash suppressor, and a means for selectively securely coupling the noise suppressor system to the firearm.

Abstract: A flash suppressor adapted to be attached to the muzzle of the barrel coaxially therewith, the flash suppressor having a base, a tapered waist portion and a shoulder surface. The flash suppressor further having a plurality of tines, in which each tine of the plurality of times has a different mass to affect sound reduction as result of expanding, and combusting gases exiting a muzzle of the firearm when the firearm is discharged.

Abstract: A collapsible structure is described that can be erected to provide an elevated working platform having two ends and two sides. Two telescopically collapsible ladder frames (10, 12) are disposed above the level of the platform, one on each end of the platform. Each ladder frame (10, 12) is formed of two stiles (20, 22) having telescopically collapsible sections, rungs each extending between respective sections of the two stiles and latch mechanisms for locking the stile sections in the extended position of the ladder frame. Each of the ladder frames (10, 12) further incorporates a guardrail (30, 32) that lies parallel to the rungs (24) when the ladder frame is collapsed. The guardrail (30, 32) is mounted for rotation about a first stile and releasably secured to the second stile. After release from the second stile of the same ladder frame and rotation about the first stile each guardrail is connectable to the second stile of the other ladder frame to lie parallel to a side of the platform.

Abstract: A step extension assembly for a tree stand includes a ladder having rungs supported by at least one ladder rail. A bracket frame including attachment portions is attached to the at least one ladder rail. A step base is attached to the bracket frame. The step base includes a stepping surface for supporting a foot of a user. The step base is positioned laterally outboard relative to the at least one ladder rail providing an extended support for a user when entering and exiting the tree stand.

Abstract: A hand grip assembly for climbing a tree includes a handle grip portion. A handle bracket is attached to the handle grip portion. At least one mounting bracket is attached to the handle bracket. The mounting bracket includes an angled shape for engaging a surface of the tree. A harness is attached to the handle bracket. The harness cinches about the tree and secures the hand grip assembly relative to the tree.

Abstract: A support apparatus includes at least first and second legs, and levelling means including: at the lower end of each of the first and second legs a cylinder and piston unit, wherein movement of the pistons of the cylinder and piston units relative to the cylinders permits variation in the length of each of the first and second legs; fluid communication means for establishing at least one closed fluid passageway between the cylinder and piston units; and valve means for controlling the passage of fluid through the fluid communication means. In a first position, the valve means permit fluid to flow between the cylinder and piston units via the fluid communication means such that the length of each of the legs is accommodated to the profile of the ground, and in a second position, the valve means do not permit fluid to flow between the cylinder and piston units thereby locking the cylinder and piston units in position.

Abstract: One embodiment of the invention is a horizontal scaffold truss that has upper and lower horizontal scaffold members offset but fixedly joined with braces. Each upper and lower members have a connector positioned on each end of the respective lower and upper members, where at least one of the connectors is pivotally mounted on the respective lower or upper connector, and the connecters are engageable with an annular member positioned on a vertical scaffold member.

Abstract: A rope grab for a vertical fall protection system is provided. The rope grab includes a housing with an elongated member passage. The elongated member passage is configured to receive an elongated member. A locking cam is pivotally coupled to the housing and selectively engages an elongated member received in the elongated member passage. A cam spring is coupled between the housing and the locking cam to provide a relatively slight biasing force on the locking cam in a direction towards an elongated member received in the elongated member passage. A locking arm, pivotally coupled to the housing, has a first end that is configured to be coupled to a safety harness of a user and a second end that selectively engages the locking cam to lock the locking cam on an elongated member in the elongated member passage during a fall event.

Abstract: A transmission system includes a housing having a sump, the housing containing a crown wheel and a pinion. The transmission system further includes an oil reservoir and a pump selectively operable to pump fluid from the oil reservoir to the sump for lubricating the crown wheel. The pump is selectively operable to pump fluid from the sump to the reservoir.

Abstract: A method for monitoring a brake which is operated by a spring force and a device for monitoring the force, comprising the steps of taking into account a force which is required to load or bias at least one spring by means of the device for monitoring the force.

Abstract: An exemplary elevator assembly includes an elevator car having a frame member. At least one toe guard panel is moveable between a first position and a second position. In the first position the toe guard panel is situated to provide a vertical surface beneath the elevator car and the toe guard panel has an end spaced a first distance from the elevator car. In the second position the toe guard panel is situated with a second, shorter distance between the end and the elevator car. A moving mechanism coupled with the toe guard panel selectively moves the toe guard panel from the first position into the second position. An instigator member situated in a selected vertical position interacts with the moving mechanism to begin movement of the toe guard panel from the first position when the frame member of the elevator car is approximately at the selected vertical position.

Abstract: The object of the invention is an elevator provided with a guide shoe arrangement, which elevator comprises at least an elevator car, which is configured to travel in the elevator hoistway guided by guide rails, and which elevator comprises at least one guide shoe element, which comprises at least a body part moving along with the elevator car and also a plurality of guide rolls supported on the body part, each of which guide rolls is configured to travel while supported on one guide surface of a guide rail when the elevator car moves. At least one of the aforementioned guide rolls is supported in a manner allowing rotation on a support part that is separate from the other aforementioned guide rolls, which support part is fixed with an openable snap-on fixing means to the aforementioned body part.

Abstract: A rope grab for a vertical fall protection system is provided. The rope grab includes a housing with an elongated member passage. The elongated member passage is configured to receive an elongated member. A locking cam is pivotally coupled to the housing and selectively engages an elongated member received in the elongated member passage. A cam biasing member positioned to provide a relatively slight biasing force on the locking cam in a direction towards an elongated member received in the elongated member passage. A locking arm, pivotally coupled to the housing, has a first end that is configured to be coupled to a safety harness of a user and a second end that selectively engages the locking cam to lock the locking cam on an elongated member in the elongated member passage during a fall event.

Abstract: Disclosed herein is a disc brake having a carrier at which a pair of pad plates is installed and a caliper housing slidably installed on the carrier and provided with a cylinder allowing a piston to be installed therein, the disc brake including an adjuster installed in the piston, a push rod installed in the cylinder and provided with a flange extending toward an inner circumferential surface of the cylinder, a ramp coupled to the flange to prevent rotation of the push rod and moving along with the push rod and seated in a seating groove provided at a rear wall of the cylinder, a spring case fixed to the cylinder and forming a predetermined accommodation space between the cylinder and the push rod, and an elastic member arranged in the accommodation space of the spring case to provide elastic force to the push rod and the ramp.

Abstract: Provided is a caliper brake including a caliper housing that constitutes an exterior of the caliper brake and has one end on which a fork is formed and is bent, a brake cylinder that is mounted on a side of the caliper housing to face the fork and generates a brake force inside the brake cylinder using an oil pressure of a damping oil transmitted from a brake line, a piston that is mounted within the brake cylinder and pressurizes a brake disc between the piston and the fork using the brake force, a pressurization rod part that is mounted within the piston on a common axis, extends in an axial direction when abrasion occurs in the fork and a frictional pad of the piston so as to compensate for abrasion, and a return spring part.

Abstract: A caliper parking brake including: caliper housing having one end on which a cylinder is formed and the other end on which a fork is formed to face the cylinder; brake force input terminal rotatably mounted on an end of the cylinder by a parking cable; brake force switching terminal installed within the cylinder on a common axis so as to rotate together with the brake force input terminal; brake force output terminal directly connected to the brake force switching terminal on a common axis; and a brake terminal that is disposed between the fork and the brake force output terminal and stops rotation of a brake disc using the brake force output by the brake force output terminal, wherein the brake force output terminal compensates for abrasion that occurs in the fork and a frictional pad of the piston by moving an initial position of the piston forward.

Abstract: A braking system for retarding rotation of a wheel includes a rotor having two opposing rotor sides, wherein the rotor is coupled to the wheel. The braking system also includes a knuckle rotatably coupled to the rotor, a caliper disposed relative to the knuckle, and first and second friction pads. Each friction pad is positioned relative to one of the rotor sides. The friction pads are housed within the caliper, which includes a hydraulic piston positioned to engage one of the friction pads. Movement of the hydraulic piston engages the friction pads with the respective rotor sides to retard the wheel. The braking system also includes a spacer disposed between the caliper and the knuckle and a fastener that fixes the caliper and the spacer to the knuckle. The spacer generates a wedging effect between the caliper and the knuckle when the rotation of the wheel is being retarded.

Abstract: Provided is a colloidal damper capable of harvesting electrical energy—that is, practical electrical power—from mechanical energy acting from the outside. This colloidal damper has: a cylinder; a piston which is guided and supported so as to reciprocate freely within this cylinder, and which combines with the cylinder to form a sealed space; a porous body having many pores and housed within the sealed space; an operating fluid which is housed together with the porous body in the sealed space and flows into the pores of the porous body when pressure is applied, and flows out from the pores of the porous body when the pressure is reduced; and a piezoelectric element installed in the sealed space.

Abstract: The rotary damper comprises: case having viscous fluid 13 filled cylindrical chamber; rotor housed in the chamber; check valve; and pressure-regulating valve. In the chamber, projecting bulkheads are formed. The rotor comprises: the rotor body and vanes. The check valve closes when the rotor rotates in the normal rotation direction, so as to restrict movement of the viscous fluid between areas 111a-111d partitioned by the bulkheads and the vanes. On the other hand, the check valve opens when the rotor rotates in the reverse rotation direction, so as to allow movement of the viscous fluid between the areas 111a-111d. The pressure-regulating valve opens when rotating force applied for rotating the rotor in the normal rotation direction is above a predetermined value, to cancel the restriction of movement of the viscous fluid between the areas 111a-111d.

Abstract: An annular dashpot damper is utilized to provide flow resistance from viscous shear to an orifice or gap which provides flow metering. This is accomplished by dividing the flow channel into circumferential segments or damping cavities which are sealed and limit rotational flow of the fluid.

Abstract: A vibration damper includes a piston rod which is axially movable in a cylinder and at which is arranged a housing in which an auxiliary piston is axially movably supported, wherein the auxiliary piston is connected to a piston rod portion at which a main piston is arranged, wherein the auxiliary piston and the main piston are outfitted with damping valves which generate a damping force for both movement directions of the piston rod and piston rod portion, wherein the main piston divides the cylinder into a working chamber on the piston rod side and a working chamber remote of the piston rod, both of which working chambers are filled with damping medium, and the auxiliary piston divides the housing into two auxiliary chambers, wherein the auxiliary piston generates a damping force over its entire stroke path, which damping force is always greater than the damping force of the main piston at an identical stroke speed.