Abstract: A vibration generator has a piston guided in linear manner, which is connected with a crankshaft by way of a connecting rod. The piston is connected with the connecting rod by way of a piston pin bearing, and the crankshaft is connected with the connecting rod by way of a crank journal. The crank journal bearing is disposed within the piston pin bearing.

Abstract: A device, method and computer program product for effecting vibrations in a device.

Abstract: A chips dischargeable wiper is disposed at the end of a nut, the wiper is defined with a flange, a plurality of ribs integrally formed with the flange, and a plurality of through holes located beside the flange. The flange is used to mate with the helical groove of the ball screw in such a manner at least a rib tapered from outside in is disposed between the flange and the screw shaft, which not only can reduce the resistance of the wiper, but also can effectively prevent intrusion of foreign objects into the screw shaft and can prevent leakage of lubricating agent. Furthermore, the rib can collect dusts and the foreign objects and discharge them out of the through holes. Therefore, the structure of wiper is simplified and can be used for a long time without maintenance.

Abstract: A disc spring is provided between a ball screw nut and a hollow shaft, and another disc spring is provided between rolling bearings and a housing. When leftward motion of a screw shaft is stopped and a rotational inertia force is applied to the ball screw nut, these disc springs allow the ball screw nut to rotate to a certain degree.

Abstract: An output power transmission device has a transmission plate and a C-ring. The transmission plate is attached to a wheel gear in an axial direction of the wheel gear such that the transmission plate directly engages with the wheel gear in a rotation direction. The transmission plate functions as a transmission member for transmitting rotation of the wheel gear to an output shaft. The C-ring is provided at a position where the C-ring sandwiches the transmission plate with the wheel gear in the axial direction. The C-ring functions as a restriction section for restricting movement of the transmission plate in the axial direction opposite from the wheel gear side. An elastic claw section as a pressing member is formed on the wheel gear. The elastic claw section presses the transmission plate against the C-ring in the axial direction.

Abstract: Provided are a gear and a gear drive unit which allow oil film formation to a sufficient degree between tooth surfaces of gears rotating at high-speed and which help to prevent generation of pitting, abrasion, and prevent scoring, temperature rise, and wear to thereby achieve an improvement in terms of durability. A tooth surface is provided with a multitude of minute recesses arranged at random, in which an axial surface roughness parameter Ryni of the surface thus provided with the recesses is set to a range: 0.8 ?m?Ryni?2.3 ?m. As a result, the tooth surface is endowed with a high oil film formation performance, and it is possible to attain a long service life even under a low-viscosity/thin-lubrication condition in which the oil film is extremely thin.

Abstract: The invention relates to a gear pair consisting of a crown gear (1) and of a pinion gear (2) provided in the form of a spur gear with an axis crossing angle of 90°. According to the invention, the teeth (3) of the pinion gear (2), in order to reduce an undercut of the teeth (5) of the crown gear (1), have a pressure angle, which increases from the outside inward in a radial direction with regard to the crown gear (1), or in the event of a constant pressure angle, have a profile offset, which decreases from the outside inward in a radial direction with regard to the crown gear (1).

Abstract: Described is a lubricating device with at least one lubricating pinion for applying a lubricant, in particular grease, which is for example fed through a lubricant line by a lubricant pump from a reservoir, to at least one gearwheel or the like, wherein the lubricating pinion has an outer toothing into which at least one lubricant outlet opens out. The teeth of the outer toothing of the lubricating pinion have a shortened tooth flank profile in relation to an involute toothing, wherein the addendum and/or the width of the tooth flanks in the peripheral direction are reduced in a tooth flank section which is situated radially outside the reference circle.

Abstract: A shifter assembly includes a post-like shift lever, a knob with a bore configured to receive the top section, and a retainer spring extending longitudinally within the bore. The spring includes retainer barbs shaped to frictionally grip the knob and further has a leg(s) configured to frictionally engage the top section and also take up clearance between the top section and the bore for frictionally engaging the post-like shift lever. The spring can be alternative shapes, such as U-shaped or L-shaped. A method of assembly includes pressing the knob onto a shift lever with a single one-touch motion.

Abstract: A manual transmission with a gearshift locking arrangement includes a rail having a shifter having a slot between forward and rear ears of the shifter, the rail being movable between rail forward and rear positions. The manual transmission with a gearshift locking arrangement also includes forward and rear engagement members disposed at positions corresponding to the rail forward and rear positions. A shift lever is also provided, an engaging portion of the shift lever being adapted to be disposed in the slot, the shift lever being adapted to move the rail between the rail forward and rear position, the engaging portion being engageable with the forward engagement member when the rail is in the rail forward position and the engaging portion being engageable with the rear engagement member when the rail is in the rail rear position.

Abstract: A shift actuator assembly includes a plurality of actuators each having a worm rotated by an electric motor and a worm wheel meshing with the worm and rotated corresponding to a rotation of the worm and the each worm wheel of the each actuator being rotated for operating each of a plurality of shift members so as to move independently, wherein the each worm wheel of the each actuator is arranged so as to be coaxial and overlap each other.

Abstract: An adjustable operating mechanism for a kick down switch includes a stopper formed on a stopper bracket and having a slope surface inclined in one direction, a kick down switch including a member for providing different mechanical operating feeling and a protrusion having a slope surface corresponding to the slope surface of the stopper, and a groove formed on an acceleration pedal arm to receive the kick down switch, the kick down switch being configured and dimensioned to be movable therein to a predetermined position so that a kick down-generating time point is adjusted.

Abstract: A gear shift device is used in a transmission of an engine, and includes: a shift drum that changes a speed change stage of the transmission according to a rotational position about an axis; an actuator having a driving shaft substantially orthogonal to this shift drum; a worm shaped barrel cam that is arranged parallel to the driving shaft of this actuator and that has a cam groove on an outer circumference; and a wheel gear that is coaxially fixed on the shift drum and that has a plurality of pins on an outer circumference. At least a pair of each pin of the wheel gear and the cam groove of the barrel cam is engaged with each other, and the shift drum is rotated by the actuator via the barrel cam and the wheel gear, to thereby change the speed change stage of the transmission.

Abstract: A robot includes a work tool, an arm, a cable, and a third member. The work tool is configured to perform a predetermined work with respect to a workpiece. The work tool is attached to the wrist. The arm supports the wrist and is rotatable around a rotational axis. The arm includes first and second members which are provided substantially in parallel to each other in a longitudinal direction of the arm to form a space between the first and second members. The cable extends through the space and is connected to the work tool. The third member connects the first and second members.

Abstract: A legged robot that ensures a large step length while keeping the height of the trunk low is realized. The legged robot is provided with a trunk, a pair of legs, and a pair of sliding joints. Each of the sliding joints links one end of each of the legs to the trunk so as to slide in a front and rear direction with respect to the trunk. For each step, one leg is caused to slide forward, and the other leg is caused to slide backward. It is possible to ensure a predetermined distance between the end portion of the one leg and the end portion of the other leg. The legged robot can make the step length large by an amount that is equivalent to this distance irrespective of the length of the legs.

Abstract: A steering column device where an inner column can be reliably clamped and sufficient rigidity and strength of an outer column can be achieved. A semi-circular arc rib (132) is formed on the peripheral edge of a closed end section (131) of a slit (13). The rib (132) is substantially semi-circular are-shaped and projects outward from an outer peripheral surface (15A) of an outer column (1). Further, linear ribs (133A, 133B) extend linearly toward the vehicle body front side so as to be continuous from the vehicle body front side of the semi-circular arc rib (132). The semi-circular arc rib (132) and the linear ribs (133A, 133B) reinforce the peripheral edge of the slit (13) of the outer column (1) whose rigidity and strength are impaired. Thus the rigidity and strength of the outer column (1) are improved.

Abstract: In a work machine equipped with a switchover means enabling selective operation of traveling devices and a work device by means of common operating levers, switchover can easily be performed and also easily recognized. In a work machine having traveling devices and a work device, operating levers that are capable of operating the traveling devices and the work device are respectively disposed at the sides of an operating seat. A foot switch connected to a controller is disposed in the proximity of and operable with a foot of an operator seated at the operating seat. While the foot switch is being operated with the foot, the traveling devices are operated by the operating levers through the controller. While the foot switch is not being operated, the work device is operated by means of the operating levers through the controller.

Abstract: An aerobar assembly for a bicycle that generally includes an aerobar, an adaptor and a control cable guide. The aerobar includes proximal and distal portions and proximal and distal ends. The aerobar has a generally hollow interior. The adaptor mounts an actuator assembly to the aerobar. The adaptor includes an interiorly-disposed portion and an exteriorly-disposed portion. The interiorly-disposed portion is disposed in the hollow interior of the aerobar and is bonded to the distal portion of the aerobar. The exteriorly-disposed portion is configured to receive the actuator assembly. The control cable guide is configured to slidably receive a control cable therethrough. The control cable guide is coupled to the adaptor such that the control cable enters the distal end, extends through the interior of the aerobar, and exits the proximal end of the aerobar.

Abstract: The invention broadly describes a method and apparatus for mounting a handlebar extension assembly to a bicycle's existing handlebars. Such handlebar extensions are typically also used to support a cyclist's elbows and place the cyclist in a narrow, aerodynamic position. In the preferred embodiment, a unshaped handlebar extension attaches to the existing handlebars at two points, with one point to the right of the handlebar stem and the other point to the left of the handlebar stem. The handlebar extension has a third mounting point at the handlebar stem. The third mounting point prevents rotation of the handlebar extension around the primary handlebars. By mounting the extensions at three points, clamping mechanisms that are light in weight and convenient can be used.

Abstract: A hinge includes a first bracket, a second bracket, a shaft, and first and second interference elements. The shaft is fixed to the first bracket. The second bracket rotationally fit about the shaft. The first interference element is rotationally mounted on the shaft and fixed to the second bracket, and defines two unleveled surfaces at one side. The second interference element is immovably mounted on the shaft beside the first interference element, and defines two unleveled surfaces at one side facing and corresponding to the unleveled surfaces of the first interference element.

Abstract: An adjustable eccentric drive is disclosed, including a first shaft and a crank pin connected to the first shaft, wherein a radial distance between the crank pin and an axis of rotation of the first shaft is adjustable with an adjusting collar; and a method for adjusting the stroke of an oscillating tool in a tool machine using the adjustable eccentric drive is disclosed.

Abstract: A cable stripper is comprised of two components, each component including a main body portion, a coupling device at one end of the main body portion and a T-shaped handle disposed at an opposite end of the main body portion. The coupling device rotatably couples the two components together. A channel runs along an interior length of each of the main body portions, which provides a path into which the cable to be stripped is inserted. A blade housing on at least one of the components of the main body portion securely holds a utility knife blade with a predetermined amount of the tip or edge of the blade protruding into the channel. The exposed portion of the blade pierces the sheath or covering of the cable by a precise, predetermined amount.

Abstract: In order to improve the stripping process, a thermal stripping apparatus is proposed which has a thermal stripper with a first holder section and a second holder section. The holder sections are designed to accommodate and hold at least one coatinged glass fiber, wherein the first holder section is arranged such that it can move with respect to the second holder section along an accommodated glass fiber. A housing is also provided, having a handle section and an appliance section, in which the thermal stripper is accommodated. A drive unit, which has a lever, is operatively connected to the thermal holder section of the thermal stripper such that a movement with respect to the handle section is converted to a movement of the first holder section.

Abstract: An exemplary fastener feeder includes a pair of guiders, a slot cover and a blocker. The guiders define a sliding slot therebetween. Each guider includes a sloped part and a level part, bodies of the fasteners are capable of being received in the sliding slot, and a head of each fastener is capable of sliding down from the sloped parts and stopping on the level parts. The slot cover defines an opening for providing a path through which a fastener pickup device can pass through and engage with a fastener located on the level parts. The blocker is located below the level parts. When the fastener pickup device moves the fastener head engaged therewith away from the opening and a length of the fastener is greater than a distance between the blocker and the level parts, the fastener is blocked by blocker and disengaged from the fastener pickup device.

Abstract: A multi jackbolt tensioner including a jackbolt body having a plurality of holes with threads to receive jackbolts having torque receiving surfaces all disposed about the periphery of each jackbolts in a mutually non parallel relation to prevent the unauthorized application of torque or stress. The torque receiving surfaces of each bolt head are defined by vertices at the intersect of n number of unsymmetrical arranged torque receiving surfaces of a polygon, where n is an odd integer.

Abstract: A ratchet wrench includes a head rotatably receiving a drive member and slideably receiving two pawls each having a coupling portion. An elastic element is mounted between the pawls to bias the pawls to engage with a coupling section of the drive member. A ring is received in the head and pivotably mounted around an engaging portion of the drive member about a pivot axis. A reversing plate is pivotably mounted around a portion of the engaging portion of the drive member beyond the head about the pivot axis between first, second, and third operative positions. The reversing plate is connected to the ring to allow joint pivotal movement about the pivot axis. The ring includes a tail having two actuating portions respectively and releasably engaging with the coupling portions of the pawls responsive to movement of the reversing plate between the three operative positions.

Abstract: “Foot Torque” is a new and improved version of the lug wrench for vehicles. “Foot Torque” far proceeds anything in the market, designed to accomplish the changing of a tire in a much easier, safer, and convenient on almost any vehicle. “Foot Torque” was designed with the intention to change one's tire, but also making it possible for all types of people to use. “Foot Torque” can be used by the elderly, the handicapped, the disabled and even used by people who have never changed a tire in their life. “Foot Torque” is the safest, easiest and most convenient lug wrench anyone could ever use. There is nothing like “Foot Torque” on the market today and if it is put on the market, I am quite positive that people would never consider using anything else again.

Abstract: A dual wrench includes: (1) a head with an internal guide and two crowns separated by the internal guide, each crown having a plurality of interior faces and a bolt receiving space, and (2) a shank connected to the head. The bolt receiving space of each crown is configured to correspond to both a first certain size of bolt and a second certain size of bolt such that a bolt of either certain size received in the bolt receiving space can be rotated when force is applied to the shank. The bolt receiving space of the dual wrench is configured to correspond to two different certain sizes of bolts.

Abstract: An adjustable clamping tool of the present invention includes a rotatable disc, two clamp portions, two slidable shanks, two rails and a housing member. When the rotatable disc is turned, the clamp portions are therefore driven to move toward or away from each other along the rails.

Abstract: A multiple-link tool assembly includes an elongated handle, an exchangeable extension link, and an exchangeable tool link. The exchangeable extension link has a first connecting end removably linked to the handle, and a second connecting end defining a sectioned cavity. The sectioned cavity includes a reduced-diameter internally serrated cavity section and an enlarged-diameter non-serrated cavity section. An adjustable geometric fitting having an externally serrated base is received and retained within the sectioned cavity. A spring is located within the non-serrated cavity section, and is adapted for normally urging the externally serrated base of the geometric fitting into the internally serrated cavity section. The exchangeable tool link has a proximal end removably joined to the geometric fitting of the extension link, and a fastener-engaging distal end adapted for engaging a threaded fastener.

Abstract: [PROBLEMS] Entire body of a driver is composed of a material which can be sterilized by an autoclave or an ultrasonic cleaner; when the driver is used in a limited space such as in a body cavity, work can be carried out efficiently without causing any trouble with a rotary work, and aspiration aberrant entry can be prevented when the driver body is dropped by mistake; ; and amount of rotation, rotation angle or rotary torque can be recognized even at the molar tooth portion. [MEANS FOR SOLVING PROBLEMS] A driver with a tail in which a metal or resin wire having proper resilient, flexible and shape restoring properties or a rope-like shaft composed of that wire is attached coaxially to a driver having a tip blade corresponding to various screw head fitting shapes of a driver handle on the side opposite to the installation side of the blade, and a rotary gauge or a digital torque sensor display is attached to the tip end of that shaft.

Abstract: A method of cutting, simultaneously on two axes (X, Y) perpendicular to each other, of a sheet or web of paper and other graphic or photographic substrates (10) with series of images, comprising the steps of feeding forward the substrate sheet or web (10) to a direction (F), detecting the speed of sheet or web (10) feed and the speed at which the distance is varying between image reference marks (11) and the ideal feed direction, determining a correct cutting line (TX) in a transverse direction to the feed direction (F) of the sheet or web by data processing according to trigonometric relations through a microprocessor to obtain the angle of parallelism defect of the image with respect to the ideal feed forward direction, aligning suitable mobile means (4) of transverse cutting with the desired cutting line (TX) by means (5) for shifting the transverse cutting means.

Abstract: The present invention relates to a microscope coupled tissue sectioning system. The tissue sectioning system includes a frame for coupling with a microscope. A sample cutting apparatus is attached with the frame. The sample cutting apparatus includes a sample cutter (e.g., blade) and is operable for causing the sample cutter to engage with the sample and remove a portion of the sample. Additionally, a sample moving apparatus attached with the frame. The sample moving apparatus is operable for causing the sample to align with an imaging path of a microscope for imaging by the microscope.

Abstract: The present invention discloses a method for cutting a large-size wafer and an apparatus for the same. The method of the present invention decreases the frequency of wafer transmission to reduce wafer damages, wherein a wafer is always carried by an identical working susceptor, and the working susceptor is moved to the related devices performing corresponding works, or wherein a wafer is always carried by an identical working susceptor, and the related devices are moved to the working susceptor to perform corresponding works.

Abstract: A method and apparatus for chopping long unwound items like fiber, fiber strands, yarn, etc. The chopper has a backup roll, a blade roll and a biasing system for forcing the backup roll and the blade roll together at a desired force during set up and operation. The biasing system contains one or more sensors for sensing a biasing force at set up and during operation.

Abstract: The invention relates to a manual drilling or milling apparatus with a suction device, especially for cutting windscreens of motor vehicles, comprising a housing fixed at the drilling or milling head in which a radial impeller is rotatably supported which can be driven by the drilling or milling head, a suction pipe which is telescopically adjustable at the housing and through which the drill or milling cutter extends, and a catchment tank connected to the housing.

Abstract: A guide bar track extension method and apparatus. A machining table has a table surface terminating at a side thereof, the surface defining a table perimeter, and a slot for a guide bar. A guide bar extension mechanism is cooperatively adapted with the table for detachably mounting to the side of the table. The guide bar extension mechanism includes an adjustment mechanism providing for lateral adjustment of the guide bar extension mechanism relative to the axis. The adjustment mechanism includes two opposed guiding members adapted to contact the guide bar outside the table perimeter.

Abstract: A machine tool, in particular in the form of a handheld jigsaw, is equipped with an observation device that is pointed at the field of work of its working tool, whose sensor technology that is created in particular by a camera is connected by a transmission device with the output point of the observation device that is provided on the side of the housing.

Abstract: A cutter wheel is disclosed, which comprises a cutter wheel body, a cutting unit, and a solder layer. The cutter wheel body consists of the first substrate and the second substrate, wherein each substrate has an inner surface and an outer surface. The inner surface of the first substrate is treated with surface modification. The cutting unit can be formed on a rough surface. The solder layer is formed between the cutting unit and the second substrate. The present invention also provides a method for manufacturing the cutter wheel as mentioned above.

Abstract: The invention relates to a rotary microtome (1) with a vertically guided object carriage (2) and a drive mechanism that converts the rotary movement into the linear movement (8) of the object carriage (2). Such a rotary microtome should be constituted such that it can be used for specimens of different size categories. Means are inventively provided that are used to set the length of the linear movement that is caused by rotation of a drive.

Abstract: A coin roll opening device consisting of a solid rectangular block wherein a longitudinal V-shaped indentation is carved out of the top surface of said block. Said V-shaped indentation is carved out from the front end of the solid block all the way to the back end and is a few centimeters equally distant from the sides of said block. In the bottom of said V-shaped indentation is a short-longitudinal incision. A blade mean is securely inserted in said incision. The longitudinal V-shaped indentation receives a wrapped roll of coins. When the wrapped roll of coins is pushed from the front to the back against the blade mean, the wrapper is sliced lengthwise and easy access to the coins is achieved. Along the left side and the right side of the solid block is a grove that runs from the front end all the way to the back end. Said groves receive a cover that moves back and forth within the groves. When the cover is pushed backward it exposes the blade and when it is pushed forward it covers the blade.

Abstract: A stringed instrument, for example an electric guitar, is arranged to produce a tremolo effect by providing the tailpiece with a number of saddles corresponding to the number of strings, each saddle having a slot for anchoring its string. The tailpiece is pivotable about an axis substantially perpendicular to the strings in order to change the tension in the strings to produce the desired tremolo effect. The tailpiece includes a housing in which the saddles are provided with a screw adjustment which varies the off-set of the saddle from the axis of the pivot. The greater the off-set of the saddle from the pivot, the greater the extension or release of the string on activation of the tremolo lever to turn the tailpiece. Thus, the position of the saddles relative to each other can be made so that on activation of the lever which pivots the tailpiece, the strings whose tension is changed remain in harmony.

Abstract: The blade-holder (3,4) for a harmonica according to the invention supporting at least one vibrating tonal blade (301, 401) comprises air-tightness means formed by side walls (301 L, 401 L) and an end wall (301 E, 401 E) extending in the continuation of the side faces and of the corresponding end face of the window through which the free part of the tonal blade concerned (301, 401) oscillates.

Abstract: In order to improve a touch of a key of a keyboard musical instrument by using a key actuating apparatus which actuates the key supported so as to be rotationally movable with regard to a frame of the keyboard musical apparatus, a key actuating apparatus (1) includes: a plunger (15) which is moved on an arc or curved line in correspondence with a rotational motion of a key (3); and a solenoid (7) including electro magnets (17 and 19) which are fixed to the frame and which are substantially in a cylindrical shape into which the plunger is inserted. The plunger (15) is formed in an arc or curved shape extended in a direction of a rotational motion of the plunger (15). A head end (15b) arranged on the plunger (15) in a lengthwise direction is made from a magnetic body.

Abstract: Methods, system and/or computer program products for detection of a note include receiving an audio signal and generating a plurality of frequency domain representations of the audio signal over time. A time domain representation is generated from the plurality of frequency domain representations. A plurality of edges are detected in the time domain representation and the note is detected by selecting one of the plurality of edges as corresponding to the note based on characteristics of the time domain representation.

Abstract: A firearm includes a receiver and a bolt carrier disposed in the receiver. The bolt carrier is moveable between a firing position and a rearward position. A rod is fixed relative to the bolt carrier and a hand guard is coupled to the receiver about the rod. A handle assembly is slideably supported by the hand guard and is moveable toward the receiver to define a charging motion and away from the receiver to define a forward assist motion. The handle assembly receives the rod during both of the charging and forward assist motions. An arm is coupled to the base and is moveable between a disengaged position spaced from the rod and an engaged position abutting the rod. When the arm is in the engaged position, the handle assembly is moved to move the rod and the bolt carrier in either of the charging and the forward assist motions.

Abstract: A perforating system has a perforating module comprising a unitary body of explosive. The explosive is contained within a non-explosive casing, or liner, having formed indentations and a cover thereover. The indentations, which will transform into explosively formed penetrators (EFP's) upon detonation, have a perimeter shape that allows for improved packing density, e.g., a hexagonal perimeter, which results in relatively little “dead space” wherein no perforating penetrators are generated. In operation, the module provides a relatively dense shot pattern and substantially reduced amount of post-detonation debris that could clog the perforations and/or require remedial clean-up or repeat perforation.

Abstract: The present invention relates to a silencer for reducing muzzle blast and noise of firearms or similar devices. The present silencer has a hollow cylindrical or other shape casing comprising front and rear end caps and an opening aligned along a longitudinal axis defining a passage for a projectile and propellant gases to emerge from the muzzle opening. A plurality of serially placed baffles of symmetrical or slanted orientation and intervening coaxial spacers are positioned within the casing and define a multitude of chambers among the baffles, spacers, and outer housing. The baffles shear propellant gases away from the projectile path and through openings or ports into additional chambers formed between the spacers and outer housing. The arrangement of baffles and spacers provides flow-impeding paths, dispersion, and controlled expansion of gases and lowers gas temperature to reduce audible noise and observable signature of the muzzle blast.

Abstract: The invention relates to a passive barrier (10) for mitigating blast waves an decelerating incident material to reduce the risk of sympathetic explosions a reduced stand-off distances. The barrier is configured to redirect the force of an incident blast wave and reduce the momentum of any incident material wherein the barrier is constructed of a shock absorbing foam material.

Abstract: A firearm including a barrel having a breech and a muzzle defining a length of the barrel is disclosed. The firearm includes a hand guard having a first end and a second end with a front sight is attached to at least one of the barrel adjacent the muzzle and the second end of the hand guard. A housing is coupled to the front sight and defines a chamber having a piston disposed therein and movable between static and displaced positions. A receiver is coupled to the first end and a bolt carrier is disposed within the receiver and moveable between firing and rearward positions. A carrier key is attached to the bolt carrier and moves concurrently with the bolt carrier and a rod is permanently affixed to the carrier key and extends to a distal end with the piston engaging the distal end when moving to the displaced position.