70results about How to "Large frictional force" patented technology

A locking mechanism for a clamping assembly includes a roller locking mechanism, at least one clamping member and a shaft member for coupling the roller locking mechanism with the first clamping member. The roller mechanism includes a roller rotatably connected to a handle which contacts a bearing surface to place a compressive force on the first clamping member when the handle is actuated. Another locking mechanism includes a camming member having cam face with a sliding cam surface and a frictional cam surface adjacent to the sliding cam surface. The camming member produces a compressive force on the clamping member as the sliding cam surface contacts a bearing surface and increased static friction when the frictional cam surface contacts the bearing surface to help maintain the camming member in a locked position. Another locking mechanism includes a support frame, a camming member pivotally attached to the support frame, a clamping member and a shaft member for coupling the roller locking mechanism with the first clamping member, the shaft member including a sliding pin which remains in sliding engagement with the camming member.

The present invention provides a system and method for providing a coating on a self-expandable medical device, such as a stent, while avoiding the issues relating to coating damage from the delivery sheath during loading and deployment. In one embodiment, the present invention comprises a constrictive coating that acts as a constrictive sheath for the stent. A cutting mechanism is mounted on the end of the delivery tube such that when the stent with the constrictive coating exits the delivery tube, the constrictive coating is cut. This releases the constriction retaining the sheath, and the stent self-expands, pressing the cut portions of the coating against the lumen wall.

An opening and closing assembly includes: (a) a first casing body; (b) a second casing body pivotable to be selectively placed in open and closed positions relative to the first casing body; and (c) a support stand for supporting the second casing body to maintain the open position. The support stand includes (c-1) a proximal end portion pivotably connected to one of the first and second casing bodies and (c-2) a distal end portion slidably connected to the other of the first and second casing bodies. The other of the first and second casing bodies includes (i) a guide portion for guiding the distal end portion of the support stand, and (ii) first and second wall portions cooperating with each other for gripping the distal end portion of the support stand. The distal end portion of the support stand includes a gripped portion having a thickness that is increased in a direction away from the distal end portion of the support stand toward the proximal end portion of the support stand.

A sealing device for sealing space between two members concentrically and relatively rotating comprising a core member fixedly fitted into one of the two members, a metal slinger fixedly fitted into the other of the two members, and an elastic seal member fixedly attached to the core member and having a seal lip which elastically and slidably contacts the slinger. The slinger has a slidably contacting treated surface for the seal lip as is processed such a surface-treatment as defined by the following parameters: arithmetic mean roughness Ra in the range from 0.5 μm to 1.5 μm, root-mean-square roughness Rq in the range from 0.6 μm to 2.0 μm, mean surface irregularity interval Sm in the range from 0.05 mm to 0.17 mm and peak count Pc (50%) in the range from 20 to 60.

The present invention provides a hood impact absorbing apparatus capable of further mitigating an impact that a collision body receives from a hood than ever, wherein a push-up rod pushes up the rear end of a hood at the time of a collision of a vehicle, and when a collision body is battered against the top surface of the hood in this state, the rear end of the hood descends and the distal end of the push-up rod slidingly contacts and moves a rear-side flat portion and an arm intermediate curved portion in the rear end of the hood, and herein, a slide contact angle (θ) in the arm intermediate curved portion is larger than a slide contact angle (θ) in the rear end of the rear-side flat portion, thereby, during a process in which the rear end of the hood descends, peaks at which an absorbing amount of impact energy becomes large can be provided at least twice, and as a result, the impact can be mitigated further than ever.

An opening and closing assembly includes: (a) a first casing body; (b) a second casing body pivotable to be selectively placed in open and closed positions relative to the first casing body; and (c) a support stand for supporting the second casing body to maintain the open position. The support stand includes (c-1) a proximal end portion pivotably connected to one of the first and second casing bodies and (c-2) a distal end portion slidably connected to the other of the first and second casing bodies. The other of the first and second casing bodies includes (i) a guide portion for guiding the distal end portion of the support stand, and (ii) first and second wall portions cooperating with each other for gripping the distal end portion of the support stand. The distal end portion of the support stand includes a gripped portion having a thickness that is increased in a direction away from the distal end portion of the support stand toward the proximal end portion of the support stand.

An internal combustion engine piston includes a piston crown, a thrust-side skirt, an anti-thrust-side skirt, a first apron, and a second apron. The first and second aprons are connected to the thrust-side and anti-thrust-side skirts through connecting sections. Each connecting section has a thickness that gradually increases as followed from a proximal longitudinal end to a distal longitudinal end, wherein the proximal longitudinal end is closer to the piston crown, and the distal longitudinal end is closer to a distal longitudinal end of a corresponding one of the thrust-side and anti-thrust-side skirts.

The present invention provides a hood impact absorbing apparatus capable of further mitigating an impact that a collision body receives from a hood than ever, wherein a push-up rod pushes up the rear end of a hood at the time of a collision of a vehicle, and when a collision body is battered against the top surface of the hood in this state, the rear end of the hood descends and the distal end of the push-up rod slidingly contacts and moves a rear-side flat portion and an arm intermediate curved portion in the rear end of the hood, and herein, a slide contact angle (θ) in the arm intermediate curved portion is larger than a slide contact angle (θ) in the rear end of the rear-side flat portion, thereby, during a process in which the rear end of the hood descends, peaks at which an absorbing amount of impact energy becomes large can be provided at least twice, and as a result, the impact can be mitigated further than ever.

A card edge connector that allows the insertion of an electric card includes an insulating body, a plurality of terminals, and two metallic pieces. Each of the two metallic pieces includes a substrate, an elastic arm connected to the substrate, and a locking portion connected to the upper edge of the free end of the elastic arm. The locking portion has a curved bottom surface and a smooth bottom surface. The smooth bottom surface is adjacent to the curved bottom surface. When locked, the curved bottom surface of the locking portion presses and locks the electric card. When the curved bottom surface loosens due to vibrations of the electric card, the smooth bottom surface of the locking portion presses and locks the electric card firmly. Therefore, the locking effect is increased, and the electric card is prevented from loosening and bounding upwardly.

A system and method for providing a coating on a self-expandable medical device such as a stent are disclosed. The system comprises a coating applicator at the distal end of a sheath which delivers coating material onto the stent as the stent is deployed from the sheath. Thus, the stent may be loaded into the sheath without a coating on the stent, thereby avoiding shearing off or damaging the coating during loading. Also, the coating is applied only as the stent exits the sheath, thereby avoiding shearing off or damaging the coating during deployment.

A retractable catheter for use in an implant delivery system, the catheter including an elongate tubular sheath made of a relatively flexible material, and a pull element for transmitting a pull force to the sheath to retract it longitudinally. The pull element includes an end portion disposed in the relatively flexible material, at least the thickness of the end portion being substantially less than its length.

An internal combustion engine piston includes a piston crown, a thrust-side skirt, an anti-thrust-side skirt, a first apron, and a second apron. The first and second aprons are connected to the thrust-side and anti-thrust-side skirts through connecting sections. Each connecting section has a thickness that gradually increases as followed from a proximal longitudinal end to a distal longitudinal end, wherein the proximal longitudinal end is closer to the piston crown, and the distal longitudinal end is closer to a distal longitudinal end of a corresponding one of the thrust-side and anti-thrust-side skirts.

A display apparatus composed of a main body and a display panel hinged to the main body is conveniently mounted on a ceiling of an automobile. The display panel is opened to a desired position to display information to a rear seat passenger, while it is closed and stays at a rest position when it is not used. Before the display panel is driven to the desired position, it is unlocked by bringing a holding device to a releasing state, and it is locked at the desired position by bringing the holding device to a holding state. At the holding state, a rotatable member connected to the display panel is gripped by the holding device, and the gripping force imposed on the rotatable member is removed at the releasing state. In this manner, the display panel is surely locked at an arbitrary position and is freely driven with a small driving force.

A window curtain pull cord concentrator safety device of the present invention provides a concentrator device which enables the gathering together of the free ends of a plurality of pull cords of a window curtain set, and enables complete transmission of a pulling force in an emergency. And basically comprises a drag cup, an inner bottom of a concave cavity of which is provided with a through hole enabling a wire hoop body coupled to a pulling member to penetrate therethrough. The wire hoop body is located in the interior of the drag cup, and displacement of an inner loop side of the wire hoop body relative to the drag cup is used to determine whether the free ends of the pull cords are radially restrained, thereby enabling complete relay transmission of the pulling force. In an emergency, the pull cords are rapidly released, thereby achieving instantaneous prompt safety effectiveness.

A rubber composition is provided with a large friction force even on a body having, for example, an ice face of a low friction coefficient. The composition is constituted by a foamed rubber having a rationalized foaming state. The composition is applied to an upper-layer rubber part of a tread rubber constituting at least a ground contact face to enhance a gripping force on a frozen road surface or a snow covered road surface. The foamed rubber has continuous cells 6 each continuously extending substantially along a particular direction 4 and sealed with a resin protection membrane 5. Also, a method is provided for producing such a tire.

A retractable catheter for use in an implant delivery system, the catheter including an elongate tubular sheath made of a relatively flexible material, and a pull element for transmitting a pull force to the sheath to retract it longitudinally. The pull element includes an end portion disposed in the relatively flexible material, at least the thickness of the end portion being substantially less than its length.

A pneumatic tire in which a tread part is provided with a pair of central main grooves extending continuously around the circumference of the tire on both sides of a tire equator C, and central thin grooves extending continuously around the circumference of the tire on the tire-axially inner sides of the central main grooves and having less groove width than the central main grooves. The central thin grooves include a linear first central thin groove running along the tire circumference, and zigzagging second central thin grooves. The first central thin groove is provided on the tire-axially inner sides of the second central thin grooves.

A fuel cell stack in accordance with the invention has a cell laminate obtained by stacking multiple plates with at least one of functions of a power generation assembly and a separator, and a pair of end plates located outside and on both ends of the cell laminate in a stacking direction. The fuel cell stack further includes a displacement preventing member extended along the stacking direction of the cell laminate and fastened to the pair of end plates, and a deformable intermediate material located between the cell laminate and the displacement preventing member over an area of two or more plates among the multiple plates. At least either one of the two or more plates and the displacement preventing member is designed to have a concavo-convex shape formed at least partially on a face in contact with the intermediate material. Such a simple structure of the fuel cell stack effectively enhances the resistance against an inertial force acting in an in-plane direction that is perpendicular to the stacking direction.

An operation device includes: a magnet; a coil; an operation unit; a holding body; a mobile body; and a coil-side yoke. The holding body holds the coil. The mobile body holds the magnet so as to provide a predetermined clearance between the coil and the magnet. The mobile body is in contact with the holding body and movable relatively with respect to the holding body due to the operation force input into the operation unit. The coil-side yoke is disposed on the coil opposite to the magnet so as to lead the magnetic line generated by the magnet to the coil. The coil-side yoke is held by the mobile body so as to be movable with the magnet.

A disassemblable hanging cart for folding chair includes a chassis, two standing poles, two reinforcement sets, and multiple hanging racks, bolts and pad sets. The chassis includes a plurality of caster sets. The two standing poles are vertically and symmetrically erected on opposite positions of the chassis. Each reinforcement set is provided between one of the two standing poles and the chassis for reinforcing the connection strength therebetween. Each hanging rack includes a cross beam, and a plurality of hanging bars for hanging folding chairs. The bolts connect the cross beams with the hanging bars. The pad sets are mounted to the hanging bars to prevent the folding chairs from falling off from the hanging cart. The hanging cart can be easily assembled, and when the hanging cart is not in use, it can be disassembled and packed in a minimum size.

A scissors is provided. The scissors according to current application has a specially designed first blade. The specially designed first blade has a tapered bump at the central part, on which a hinge hole is developed. The tapered bump on the first blade allow the second blade of the scissors to cross over the first blade with an angle. Therefore, the second blade's wide edge crosses over the first blade's wide edge with an angle and sweeps wide surface of the first blade with an angle. Such angled cross over of the blades provides a more precise cut of customer's hair as a barber intended.

An electromagnetic linear valve includes: (a) a plunger including a large outside-diameter portion and a small outside-diameter portion, and (b) a housing having a through-hole and including a large inside-diameter portion in which the large outside-diameter portion is inserted with a clearance being defined between the large inside-diameter portion and the large outside-diameter portion, and a small inside-diameter portion in which the small outside-diameter portion is inserted with a clearance being defined between the small inside-diameter portion and the outside-diameter portion. The plunger has an end portion which serves as a valve body that is to be seated on a valve seat constituted by an opening of the through-hole. The large outside-diameter portion has an end portion constituted by another end portion of the plunger that is opposite to the above-described end portion of the plunger. The clearance between the small inside-diameter portion and the small outside-diameter portion is smaller than the clearance between the large inside-diameter portion and the large outside-diameter portion.

A tensioner includes a base, a tension arrangement rotatable at the base, a damping member being rotated in a loading direction by the tension arrangement, and an elastic member biasing against the damping member. The position of the damping member depends by the layout geometry of the specific application and is directly in opposition to the hub load. The reaction force of the cylindrical surface of the base on the damping member is very near to the plan of the external forces represented by the hub load to minimize the deflection of the shaft. The tension arrangement is rotated to push the damping member for generating a first positive tension between the damping member and the base, and to expand the elastic member radially for generating a second positive tension between the elastic member and the damping member, so as to enhance a damping force of the tensioner.

A display apparatus composed of a main body and a display panel hinged to the main body is conveniently mounted on a ceiling of an automobile. The display panel is opened to a desired position to display information to a rear seat passenger, while it is closed and stays at a rest position when it is not used. Before the display panel is driven to the desired position, it is unlocked by bringing a holding device to a releasing state, and it is locked at the desired position by bringing the holding device to a holding state. At the holding state, a rotatable member connected to the display panel is gripped by the holding device, and the gripping force imposed on the rotatable member is removed at the releasing state. In this manner, the display panel is surely locked at an arbitrary position and is freely driven with a small driving force.

A friction damper comprises a channel member including at least one friction channel and a wedge member including at least one friction wedge received by a corresponding friction channel for sliding motion along the channel relative to the channel member. Each friction channel has a pair of internal sidewalls connected by an internal transverse wall, wherein at least one of the pair of sidewalls forms an obtuse angle with the transverse wall. In a preferred construction, the sidewalls are symmetrically convergent as they approach the connecting transverse wall. Each friction wedge includes a pair of external sidewalls parallel to the internal sidewalls of the channel, wherein the external sidewalls of the friction wedge are movable into surface-to-surface engagement with the internal sidewalls of the friction channel by adjusting the depth of receipt of the friction wedge in the friction channel. The friction damper of the present invention makes it possible to increase the equivalent friction coefficient by a factor of up to ten to twenty times.

A tensioner includes a base, a tension arrangement rotatable at the base, a damping member being rotated in a loading direction by the tension arrangement, and an elastic member biasing against the damping member. The position of the damping member depends by the layout geometry of the specific application and is directly in opposition to the hub load. The reaction force of the cylindrical surface of the base on the damping member is very near to the plan of the external forces represented by the hub load to minimize the deflection of the shaft. The tension arrangement is rotated to push the damping member for generating a first positive tension between the damping member and the base, and to expand the elastic member radially for generating a second positive tension between the elastic member and the damping member, so as to enhance a damping force of the tensioner.

A card edge connector that allows the insertion of an electric card includes an insulating body, a plurality of terminals, and two metallic pieces. Each of the two metallic pieces includes a substrate, an elastic arm connected to the substrate, and a locking portion connected to the upper edge of the free end of the elastic arm. The locking portion has a curved bottom surface and a smooth bottom surface. The smooth bottom surface is adjacent to the curved bottom surface. When locked, the curved bottom surface of the locking portion presses and locks the electric card. When the curved bottom surface loosens due to vibrations of the electric card, the smooth bottom surface of the locking portion presses and locks the electric card firmly. Therefore, the locking effect is increased, and the electric card is prevented from loosening and bounding upwardly.