Abstract: Disclosed is a process for producing a golf ball having a cover formed from a thermoplastic polyurethane material which can be recycled for molding, which exhibits high restitution, and which exhibits excellent scuff resistance. The production process includes preparing a cover-forming material (C) by incorporating the following component (B) into the following component (A); and subjecting the cover-forming material (C) to injection molding, to thereby form a cover around the core: (A) a thermoplastic polyurethane material, and (B) an isocyanate mixture in which an isocyanate compound (b-1) having at least two isocyanate groups serving as functional groups in the molecule is dispersed in a thermoplastic resin (b-2) which is substantially non-reactive with the isocyanate groups.

Abstract: A method of playing with a ball and a U-shaped conduit having a uniform circular cross-section throughout its length and having opposite open ends so that either open end can discharge or capture the ball. The method comprises: holding the conduit so that the open ends are upright and the ball is in the center of the conduit, starting the ball moving back and forth by moving the conduit sidewise, as the ball rolls inside the conduit, moving the conduit in the opposite direction creating momentum on the ball so that it will travel farther up the opposite side of the conduit, and repeating the above steps until the ball is released from the conduit through an open end. The method may be carried out by a single player who repeatedly releases and captures the ball or by multiple players who take turns capturing and releasing the ball.

Abstract: A sports racquet strung with a bypass string pattern. The sports racquet includes a frame having a first side and an opposed second side. The second side of the frame has a plurality of spaced apart string anchoring points. A string bed including a string having a plurality of string segments each strung between the first side and the second side of the frame using the string anchoring points. The string bed includes first and second string segments that are adjacent each other on the string, substantially parallel to each other in the string bed, but are spaced apart from each other in the string bed by at least two other string segments strung substantially parallel to the first and second string segments.

Abstract: A racket stringer includes a work table, and two opposite fixing devices each mounted on the work table and each including a rack, a guide plate, two foot posts, a support shaft, and a press rod. Thus, the fixing device has a quick positioning microadjustment function. In addition, the fixing device can be displaced easily and rapidly, thereby facilitating the user operating the racket sag stringer.

Abstract: A ball bat includes a barrel, a handle, and a tapered section joining the barrel to the handle. The barrel includes an outer wall and an interface section located within the outer wall. The interface section includes one or more layers of non-resin-impregnated fabric sandwiched between a plurality of resin-impregnated composite layers. A method of constructing a ball bat includes the steps of placing a substantially cylindrical layer of fabric between a plurality of resin-impregnated layers to form an interface section. The interface section is placed between a plurality of substantially cylindrical outer wall sections made up of a plurality of composite plies. Heat and pressure are applied to the interface section and the composite plies to induce a flow of resin from the resin-impregnated layers into the fabric layer, and to form an integral bat barrel. The interface section provides added durability and “trampoline effect” to bat.

Abstract: A detachable nock for use with a bow hunting arrow carrying a locating device within its hollow shaft. The detachable nock engages with the target animal and removes the locating device from the arrow shaft as the arrow passes through the target animal, thereby retaining the locating device with the animal to permit tracking. The detachable nock may be constructed with various fixed or movable retention components to accommodate the needs of a wide range of hunters. The design of the detachable nock minimizes its impact on the flight of the arrow and allows the bow hunter to use any style of hollow-shaft arrow, broadhead, and fletching.

Abstract: Since a pressing force applied to a pulley has ability to regulate a rotation speed and an elastic force applied to the pulley has ability to regulate torque, by independently applying the pressing force and/or the elastic force to the single pulley, and externally regulating the pressing force and/or elastic force to arbitrary values independently, a practical speed-change range is widened irrespective of a type of belt and high effective transmission is achieved. The pulley pressure control system comprises pressure application means for applying at least one of a pressing force and an elastic force to each movable disk, in which the pressing force applied to the movable disk regulates a rotation speed of each pulley by shifting a position of the endless belt on the pulley and the elastic force applied to the movable disk regulates torque using a frictional force.

Abstract: A method of bonding an ethylene•&agr;-olefin rubber composition with a fiber material. The method includes the steps of adhesion treating the fiber material with a resorcinol-formalin-rubber latex with an ethylene•&agr;-olefin elastomer latex and vulcanization bonding the adhesion-treated fiber material together with an unvulcanized ethylene•&agr;-olefin rubber composition.

Abstract: Continuously variable speed power transmission with integrated motor/generator components. The transmission has an input member rotatable about an input axis, an output member rotatable about an output axis, a reaction control rotor with integrated motor/generator components for selective rotation about the input axis, a pericyclic motion converter mounted for nutational motion about the input axis, and a control means for selectively adjusting the rate of rotation of the reaction control rotor relative to the input member. The continuously variable speed power transmission with integrated motor/generator components can be located in a vehicle wheel hub.

Abstract: The family of transmissions has a plurality of members that can be utilized in powertrains to provide at least six forward speed ratio and one reverse speed ratio. The transmission family members include four planetary gear sets, two input clutches, seven or eight torque transmitting mechanisms, three fixed interconnections, and one grounded planetary gear member. The invention provides a low content multi-speed dual clutch transmission mechanism wherein the two input clutches alternately connect the engine to realize odd and even number speed ratio ranges. The torque transmitting mechanisms provide connections between various gear members, the fixed interconnections, the input clutches, the output shaft, and the transmission housing, and are operated in combinations of three to establish at least five forward speed ratios and at least one reverse speed ratio.

Abstract: The family of transmissions has a plurality of members that can be utilized in powertrains to provide at least six forward speed ratios and one reverse speed ratio. The transmission family members include four planetary gear sets, two input clutches, eight or nine torque transmitting mechanisms and four fixed interconnections. The invention provides a low content multi-speed dual clutch transmission mechanism wherein the two input clutches alternately connect the engine to realize odd and even number speed ratio ranges. The torque transmitting mechanisms provide connections between various gear members, the fixed interconnections, the input shaft, the output shaft, and the transmission housing, and are operated in combinations of three to establish at least five forward speed ratios and at least one reverse speed ratio.

Abstract: The family of transmissions has a plurality of members that can be utilized in powertrains to provide at least six forward speed ratios and one reverse speed ratio. The transmission family members include four planetary gear sets, two input clutches, eight or nine torque transmitting mechanisms and three fixed interconnections. The invention provides a low content multi-speed dual clutch transmission mechanism wherein the two input clutches alternately connect the engine to realize odd and even number speed ratio ranges. The torque transmitting mechanisms provide connections between various gear members, the fixed interconnections, the input clutches, the output shaft, and the transmission housing, and are operated with the input clutches in combinations of three to establish at least six forward speed ratios and at least one reverse speed ratio.

Abstract: A toroidal type continuously variable transmission, in which there are provided a plurality of sets of speed change units each having rollers sandwiched between the opposed faces of input discs and output discs and in which the individual input discs are coupled to an input shaft whereas the individual output discs are coupled to an output shaft. The individual input discs or the individual output discs are held rotatably relative to each other, and the individual input discs are coupled in a torque transmitting manner to the input shaft through individual chains.

Abstract: The invention relates to an anti-withdrawal device for preventing a key from being withdrawn from an ignition starter switch of an automobile, comprising a blocking device which is coupled with a switch contact of a transmission. The spring-loaded blocking pin of said blocking device can be actuated electromagnetically. The blocking device acts on a detent pawl which is fixed on a rotor of the ignition starter switch and which prevents the ignition starter switch from twisting into a position in which the key can be withdrawn; depending on the position of the transmission.

Abstract: A training method and apparatus for athletes that separates running into vertical and horizontal components. The athlete is positioned on a horizontal component training device in an upright position. The athlete contacts the horizontal component training device at a leg pad, a mid-torso location, and an upper torso location. The athlete sequentially trains for acceleration at least the hip flexor and the hip extensor muscles of each leg supramaximally against the leg pad through a sports specific motion. The athlete also sequentially trains the stretch-shortening cycle of at least the hip flexor and the hip extensor muscles of each leg supramaximally against the leg pad through a sports specific motion to train the stretch shortening component of hip flexion and hip extension. Training for acceleration is preferably against hydraulic resistance and training the stretch-shortening cycle is preferably against isotonic resistance.

Abstract: A motorized roller comprised of a commercial electric motor suspended inside a drive roller tube, drives via belt means, input of a integral two stage drive belt system adjacent to said motorized drive roller. Subsequently the output of two stage drive belt system is fed back to the motorized motor outside housing which in turn drives treadmill or conveyor continuous belt to move people or goods. Increased torque provided by two stage drive requires less horsepower. The all belt, no gears, drive system absorbs shock, is quiet and has a low profile.

Abstract: An out of water swimming exercise device is described. An adjustable exercise bench is combined with a pedal mechanism for simulating arm motions and a stair climber mechanism for simulating leg motions. The pedal mechanism is rotated by telescopic cranks attached with universal joints and engaged by handgrips. The stair climber mechanism is pivoted by lever bars and engaged by the user's legs with cushioned rolls. Three different swim strokes can be simulated, including; freestyle, backstroke and butterfly. The exercise device is fully adjustable to different sizes of users. Accessory devices such as heart rate monitors, lap/distance counters, timers and the like can be attached to the device.

Abstract: An antigravity full range of motion four limb dry swim overall body exercise machine that allows virtually every muscle in the body to work anaerobically or aerobically, at the user's choosing, while the user is lying down on their back to take pressure off the user's spine, and working most muscles through a nominal or up to a full range of motion at the user's choosing, which motions can be in one of several directions or arcs at the user's choosing. The machine includes a base frame with parallel frame adjustable lengths and supporting cross segments horizontally and vertically to a second parallel frame length above the first, the entire base frame having a first end and a second end, the first end having frame adjustments to accept length and tension adjustable arm apparatuses with handles, the second end having frame adjustments to accept length and tension adjustable leg apparatuses with pedals.

Abstract: A mini body press that is configurable to allow a user to perform a multitude of upper body workout exercises. The mini body press includes a molded contoured back brace member, a pair of shoulder harnesses, a pair of hand grips, and a number of elastic straps that are securable between the hand grips and the back brace member.

Abstract: A machining center comprising at least two workstations. A first workstation is adapted to receive a first workpiece, and a second workstation is adapted to receive a second workpiece. The first workstation may be a vacuum table, and the second workstation may be comprised of a plurality of hold-down bars. A carriage is adapted to travel between the two workstations in one machine cycle. The carriage may have a single tool or a plurality of tools. During the machine cycle, the carriage is adapted to perform a machining operation (e.g., routing, drilling, sawing, and/or sanding) on the workpiece at each workstation.

Abstract: An advanced food container includes a ring frame, a bottom panel and a removable lid. The ring frame includes a tapered wall with a bottom support surface disposed at substantially a bottom thereof and a lid support surface disposed at substantially at top thereof. The bottom support surface is sized to receive the outer perimeter of the bottom panel and the lid support surface is sized to receive the outer perimeter of the removable lid. In a first embodiment, the bottom panel and removable lid are retained with at least two retention projections. In a second embodiment, the bottom panel and removable lid are retained with a plurality of retention protrusions. In a third embodiment, the bottom panel is retained with adhesive and the removable lid is retained with at least one piece of tape. In a fourth embodiment, the bottom panel and removable lid are retained in slots.

Abstract: A case is gripped by its side panel by suction cups mounted on a squaring arm and rotated out of a magazine into contact with a squaring rail, which forces the case into a squared configuration as the case rotates into position between two drive belts, one fixed, and one with a gate-like swinging section which is rotated open. The bottom minor flaps are then closed by minor flap folders as the swinging belt section rotates closed, gripping the case. The drive belts then convey the case out of the squaring area, over flap ploughs which close the bottom major flaps. The squaring arm, fixed drive belt, and rear minor flap folder are mounted to a carrier. The front minor flap folder and major flap ploughs are mounted to a second carrier. The adjustment mechanism of both carriers is coupled to the adjustment mechanism of the magazine height.

Abstract: A centrifuge includes a rotor, and a motor for rotating the rotor. At least three identification elements provided on the rotor are arranged along a circumference of a circle whose center coincides with an axis of rotation of the rotor. An angular interval between prescribed two of the at least three identification elements indicates a maximum allowable rotational speed of the rotor. One or more of the at least three identification elements indicates a type of the rotor. A sensor operates for detecting the at least three identification elements during rotation of the rotor. The angular interval between the prescribed two of the at least three identification elements is measured in response to an output signal from the sensor to detect the maximum allowable rotational speed of the rotor. The type of the rotor is detected in response to the output signal from the sensor.

Abstract: A rotor cover attach and release apparatus for use with a centrifuge. The apparatus includes a knob, a cover and housing that are both affixed to the knob. The apparatus also includes an adapter having detents pitched at an angle, that is connected to the housing along with a plunger that is disposed within the knob and housing. In addition, the apparatus has a first moveable element that is retained within a passage located on the housing and a biasing element located within the housing. The apparatus additionally includes a plurality of sealing elements.

Abstract: A device is disclosed for ophthalmologic microsurgery for improving the drainage of the aqueous humor in the eye of a living being, wherein the device has an endoscope connected to a monitor screen and includes a tube-shaped probe adapted for insertion into an eye, and one or more channels co-axially disposed therein and provided with optical elements for focusing and transmitting images from the viewing field in the eye, and wherein the probe houses a surgical tool which is movable in axial direction and about the longitudinal axis so that by means of the oscillating and/or vibrating tool a passageway can be opened in the tissue of the trabecular meshwork for connecting the anterior chamber with the Schlemm's canal.

Abstract: An energy saving device for acquiring in vivo images of the gastro-intestinal tract is provided. The device, such as an autonomous capsule, includes at least one imaging unit; a control unit connected to the imaging unit and a power supply connected to the control unit. The control unit includes a switching unit and an axial motion detector connected to the switching unit. The axial motion detector detects the axial movement of the device and if the axial acceleration is below a pre-determined threshold, disconnects the power supply thereby preventing the acquisition of redundant images.

Abstract: Expandable actuators surround a central conduit. Each actuator comprises a bladder that, when fluid is introduced, expands laterally while contracting longitudinally. A restorative spring can be placed inside a bladder and between the two ends to restore the actuator to its original shape as fluid is withdrawn. Multiple actuators can be placed in series to successively inflate and deflate and generate a peristaltic motion. One or more Shape Memory Alloy (SMA) springs can be affixed to one or more restorative springs to cause bending motion.

Abstract: A portable endoscope has a pump, a tank that stores liquid, a first coupling tube that spatially connects the pump with a gas supplying tube, a divergent tube that diverges from the first coupling tube and extends toward an inside of the tank, a balloon that is spatially connected to the divergent tube and is expandable and shrinkable in the tank, a second coupling tube that spatially connects the inside of the tank with a liquid supplying tube, and a gas direction controller that selectively directs the gas discharged from the pump to one of the gas supplying tube and the divergent tube. The liquid is stored outside of the balloon. The tank includes a sealing member that hermetically seals the tank.

Abstract: A laryngoscope comprises a blade having a surface (17) for engaging the tongue of a patient by means of an operating handle (13) manipulated by an operator in which the operating blade (13) lies out of the plane normal to the tongue-contacting surface (17) of the blade. The laryngoscope substantially avoids the likelihood of a load acting on the patient's upper teeth.

Abstract: A surgical retractor system including: a surgical retractor for retracting tissue surrounding an opening; and an attachment member having a linear or non-linear edge along a length; and an accessory device for use with the surgical retractor, the accessory device having a channel in sliding engagement with the edge along the length, the channel being the other of linear and non-linear along a width thereof such that the accessory device is movable along the length of the edge into a desired position upon the application of a moving force and locked in the desired position in the absence of the moving force. Also provided are various mounts for disposing the edge in the channel and a pseudoelastic arm for supporting the accessory device from the attachment member, the arm being capable of articulation into a desired position yet also maintaining the desired position during a surgical procedure.

Abstract: Surgical methods and devices allow closed-chest surgery to be performed on a heart of a patient while the heart is beating. A region of the heart is stabilized by engaging a surface of the heart with a stabilizer without having to stop the heart. Motion of the target tissues is inhibited sufficiently to treat the target tissues with robotic surgical tools which move in response to inputs of a robotic system operator. A stabilizing surface of the stabilizer is coupled to a drive system to position the surface from outside the patient, preferably by actuators of the robotic servomechanism. Exemplary stabilizers includes a suture or other flexible tension member spanning between a pair of jointed bodies, allowing the member to occlude a coronary blood vessel and/or help stabilize the target region between the stabilizing surfaces.

Abstract: An implant includes a pressure sensor, a controller for acquiring pressure data from the sensor, and an acoustic transducer for converting energy between electrical energy and acoustic energy. A capacitor is coupled to the acoustic transducer for storing electrical energy converted by the transducer and/or for providing electrical energy to operate the implant. The acoustic transducer may operate alternatively or simultaneously as an energy exchanger or an acoustic transmitter. During use, the implant is implanted within a patient's body, and an external transducer transmits a first acoustic signal into the patient's body, to energize the capacitor. The implant then obtains pressure data, and transmits a second acoustic signal to the external transducer, the second acoustic signal including the pressure data.

Abstract: Structure-based processing includes a method of diagnosing diseases that works by arranging diseases, symptoms, and questions into a set of related disease, symptom, and question structures, such as objects or lists, in such a way that the structures can be processed to generate a dialogue with a patient. A structure-based processing system organizes medical knowledge into formal structures and then executes those structures on a structure engine to automatically select the next question. Patient responses to the questions lead to more questions and ultimately to a diagnosis. An object-oriented embodiment includes software objects utilized as active, intelligent agents where each object performs its own tasks and calls upon other objects to perform their tasks at the appropriate time to arrive at a diagnosis.

Abstract: Ultrasound energy is transmitted into tissue in a first direction to provide a virtual extended shear wave source. The virtual extended shear wave source generates an extended shear wave that propagates in a second direction substantially orthogonal to the first direction to cause movement in the first direction of tissue that is offset from the virtual extended shear wave source in the second direction. Related ultrasound imaging systems and computer program products are also disclosed.

Abstract: A method and apparatus for enabling a biopsy needle to be observed in a three-dimensional ultrasound diagnostic system using an interventional ultrasound system. The apparatus comprises an ultrasound transducer, a three-dimensional image-forming section, a section for extracting a target object, a location-calculating section, a display section, and a controller. The method comprises the steps of acquiring a two-dimensional ultrasound image of a subject; generating a three-dimensional volume image based on the two-dimensional ultrasound image; segmenting a target image, which corresponds to a target object within the subject, from the three-dimensional volume image; displaying a guide line of the biopsy guide on the segmented target image; extracting the segmented target image; acquiring information on a location of the biopsy needle by reference to the segmented target image; calculating an error based on the information; and displaying a guiding status of the biopsy needle based on the calculated error.

Abstract: A catheter is provided for insertion in the he blood vessel of a patient for ultrasonically imaging the vessel wall. The catheter includes a tubular element and an internally housed drive cable for effective circumferential scan about the catheter of an ultrasonic generating means. Both the tubular element and the drive cable are of a size and flexibility sufficient to permit their introduction into the vessel and subsequent advancement through the vessel to the location of the vessel wall where imaging is desired.

Abstract: An infant cardiac and apnea home monitoring system, which provides audible, visual, and other auxiliary sensory alarms and also includes the ability to transmit an encrypted signal to an Emergency Message Retrieval Unit (EMRU), which in itself contains audible, visual, and touch sensory alarms. The ability of the Personal Home Baby Monitor (PHBM) to identify when an infant's heart or respiratory rate is not within the pre-set parameters will result in the activation of an alarm state Once the PHBM has entered an alarm state, the base unit will trigger all available alerts, including the simultaneous transmission of a low frequency enable and a high frequency modulated signal, from the base unit to the EMRU. The EMRU upon successfully decoding and validation of the signal will trigger its sensory alarms.

Abstract: A bone graft harvesting drill, comprising: a flexible tubular member and a hollow cylindrical drill bit mounted to a distal end of the flexible tubular member.

Abstract: A device for measuring the length of a stoma is disclosed. A method to utilize the stoma measuring device is also disclosed.

Abstract: The present invention is related to a fitness stick and particularly to a fitness stick with a sheath and a moxibustion instrument, comprising a flapping bat, a sheath and a moxibustion instrument, having many protuberances on the surface of sheath for massaging, the moxibustion instrument is assembled inside the handle of the flapping bat with a separable spring coil and could be separated from the stick for isolated use with both functions of moxibustion and massage.

Abstract: A pneumatic chest compression vest is disclosed for the purposes of clearing the lungs of mucus and producing quality sputum samples for analysis. The vest is comprised of a belt and a front panel which has an air bladder that applies a compressive force to the region of the chest that encompasses the lungs mounted on its inner surface. The belt extends around a patient to hold the vest in the correct position during treatment.

Abstract: A foot massaging device for massaging a bottom of o foot of a user. The foot massaging device includes a body member being designed for being rolled between the foot of the user and a floor. A sleeve member has a perimeter wall defining an interior space of the sleeve member. The interior space of the sleeve member has an open end whereby the open end permits insertion of the body member into the interior space of the sleeve member. The sleeve member is designed for massaging the bottom of the foot of the user when the body member is rolled between the floor and the foot of the user.

Abstract: The improved longitudinal support structure is used in combination with a leg brace that provides support to a wearer's leg. The improved longitudinal support structure for longitudinally supporting the leg brace provides a pivot post attached to the outer lower portion of the leg brace. A support member extends from the outer lower portion of the leg brace. The support member has apertures through it to provide longitudinal adjustment and is rotatably connected to the pivot post through one of the apertures so that an end can rotate about the pivot post. A stop post limits the rotation of the support member to a predetermined range. A rigid cross member attached to the end of the support member positioned adjacent the wearer's ankle rests atop the wearer's foot and is shaped to accept the wearer's ankle. Means for securing the rigid cross member about the wearer's ankle is provided.

Abstract: A portable extremity support rack that offers a quick, easy, accessible and effective way to apply the standard RICE principle for post traumatic injury management. The extremity support rack collapses into a portable carrying case so it can be easily stored when not in use or quickly transported to different settings where injury management may take place. An upper surface and a lower surface in the extremity support rack are adjustably elevated and positioned to comfortably fit injured limbs of any shape and size.

Abstract: The present invention concerns an eye protector comprising first and second elements intended for attachment respectively to a patient's upper eye lid and to a region of the patient's cheek beneath the ye, and fastener means for releasably fastening the elements together; said fastener means being configured to resist release in response to natural eye lid motion but to release more readily when pulled apart for detachment.

Abstract: An extracorporeal blood processing system including a disposable assembly that has integral fluid passageways. A blood removal conduit and a blood return conduit are interconnected with the integral fluid passageways. A diaphragm is mounted in the disposable assembly and is removably attachable to a sensor via a number of connection devices. In one embodiment, the sensor may include a transducer that is capable of measuring the force exerted on the diaphragm. The corresponding force may be correlated to a pressure of fluid in either the blood removal conduit and/or the blood return conduit.

Abstract: A catheter system includes a catheter having a proximal end, a distal end, and a lumen extending therein. An administering portion is disposed at the distal end of the catheter and is configured to administer a bolus of liquid in response to positive pressure in a distal portion of the lumen. The catheter system of the present invention has a dead space of less 0.32 cc and preferably less than 0.15 cc in which residual therapeutic agents remain after delivery. The present invention also includes a method of administering a liquid to a treatment site. The distal end of the catheter is transluminally positioned proximate the treatment site. The catheter is charged by placing a bolus of the liquid in the lumen A positive pressure is created to drive the bolus to the administering tip to express the bolus from the distal end of the catheter.

Abstract: A wound treatment apparatus is disclosed to provide vacuum therapy to a wound associated with a patient. The wound treatment apparatus comprises a control unit comprising an alarm and a display displaying an alarm log providing information associated with each activation of the alarm. The display also displays information to instruct a user how to operate the wound treatment apparatus. A method of calibrating the control unit is disclosed.

Abstract: A method and an apparatus for the storage and transfer of a lyophilisate, oncolytic, mutagenic, or other prescription is disclosed. An ampule prior to its being sealed has an orifice at one end for the addition of the lyophilisate, for example or one component of a multi-component mixture. After placement of the lyophilisate, the orifice is sealed. The ampule has a body portion formed with flexibly deformable walls and with the sealed orifice defines a blind bore. An opening of the ampule is also included and has a tapered section adapted to frictionally fit over a taper of a male luer-type fitting commonly found on syringes and needleless cannulas. The opening is protected by a frangible cap integrally formed during manufacture. By removing the cap and docking the opening with a syringe, liquid enters the ampule for mixing with the dry contents in the ampule without ambient air.

Abstract: A surgical introducer sheath comprising a first member having a first longitudinally extending lumen dimensioned to receive a surgical instrument therethrough, a second member having a second longitudinally extending lumen dimensioned to receive the first member, and a retainer adjacent a distal portion of the second member movable from a first retracted position to a second extended position to limit proximal movement of the introducer sheath. Rotational movement of the second member in a first direction moves the retainer to the extended position and rotational movement of the second member in a second direction moves the retainer to a retracted position.