Abstract: A puncture needle includes: a rod-shaped main body; and a blade surface located at a distal end portion of the main body, which includes: first, second, and third blade surface portions. The first blade surface portion and the second blade surface portion form a blade edge at a ridge line where the first blade surface portion and the second blade surface portion meet, wherein a needle tip is located at a distal end of the blade edge. The third blade surface portion is contiguous with a proximal side of at least the first blade surface portion, and the third blade surface portion is a single flat surface that is inclined with respect to a central axis of the main body. In a side view of the main body, a line extending along the third blade surface portion intersects with the first blade surface portion.

Abstract: A hollow puncture needle includes: a needle body portion; a needle distal end portion that extends from the needle body portion in a distal direction and that includes a blade surface that is inclined with respect to an axis of the puncture needle; and an ultrasonic wave reflecting structure including at least one reflecting portion having a concave or hole shape that opens on an inner peripheral surface of the needle distal end portion. An inner surface of the reflecting portion includes a pair of inclined surfaces that face each other, wherein a distance between the inclined surfaces becomes smaller in a direction towards an outer peripheral surface side of the needle distal end portion. The inclined surfaces is parallel to the axis of the puncture needle.

Abstract: A hollow puncture needle includes: a needle body portion; a needle distal end portion that extends from the needle body portion in a distal direction and that includes a blade surface that is inclined with respect to an axis of the puncture needle; and an ultrasonic wave reflecting structure including at least one reflecting portion having a concave or hole shape that opens on an inner peripheral surface of the needle distal end portion. An inner surface of the reflecting portion includes a pair of inclined surfaces that face each other, wherein a distance between the inclined surfaces becomes smaller in a direction towards an outer peripheral surface side of the needle distal end portion. The inclined surfaces is parallel to the axis of the puncture needle.

Abstract: A puncture needle includes: a rod-shaped main body; and a blade surface located at a distal end portion of the main body, which includes: first, second, and third blade surface portions. The first blade surface portion and the second blade surface portion form a blade edge at a ridge line where the first blade surface portion and the second blade surface portion meet, wherein a needle tip is located at a distal end of the blade edge. The third blade surface portion is contiguous with a proximal side of at least the first blade surface portion, and the third blade surface portion is a single flat surface that is inclined with respect to a central axis of the main body. In a side view of the main body, a line extending along the third blade surface portion intersects with the first blade surface portion.

Abstract: A puncture needle for medical use includes: a main body that is rod-shaped and that comprises a distal end portion comprising a blade surface. The blade surface includes: a first blade surface portion that extends so as to incline with respect to a central axis of the main body, and a second blade surface portion that is formed on a back side of the first blade surface. A blade edge having a needle tip at one end is formed by a ridge line where the first blade surface portion meets the second blade surface portion. The first blade surface portion is constituted by a concave surface that is concave in a side view of the main body.

Abstract: A vibration-damping electromagnetic actuator including: a tubular stator including at least one coil member having a coil and an outer yoke attached to the coil; a mover including a permanent magnet and at least one inner yoke superposed in an axial direction of the stator, the mover being inserted into the tubular stator as axially displaceable relative to the stator through energization to the coil; and an inner tubular part provided at the outer yoke being superposed on an inner peripheral face of the coil to have a magnetic gap, wherein the at least one inner yoke has a thick part at an outer peripheral part thereof, and a lightening part at an inner peripheral part thereof so that an axial dimension of the inner yoke is smaller in a formation part of the lightening part than in the thick part.

Abstract: A vibration-damping electromagnetic actuator including: a stator; a movable member displaceable relative to the stator, and being disposed within or about it; a coil member with a coil generating a magnetic field through energization, which is disposed at one of the stator and the movable member; an armature displaceable relative to the coil member by an effect of the magnetic field generated by the coil, which is disposed at the other one of the stator and the movable member; a tubular guide sleeve disposed between the stator and the movable member so that the movable member is slidable along the guide sleeve; and an elastic support body fixed to the guide sleeve being clamped by the stator at a portion of the elastic support body apart from the guide sleeve so that the guide sleeve is elastically supported by the stator.

Abstract: A vibration-damping electromagnetic actuator including: a tubular stator; a movable member displaceable relative to the stator in an axial direction, and being inserted in the stator; a housing including a tubular peripheral wall and being attached to the stator; a support rubber elastic body elastically connecting the movable member to the housing; and a coil member and an armature displaceable relative to the coil member disposed at one and the other of the stator and the movable member respectively. The stator is arranged in an inner periphery of the peripheral wall, and a gap is provided between the peripheral wall and the stator in an axis-perpendicular direction. The stator is attached to the housing in a state aligned with the movable member by means of displacement of the stator relative to the housing in the axis-perpendicular direction.

Abstract: A vibration-damping electromagnetic actuator including: a tubular stator including at least one coil member having a coil and an outer yoke attached to the coil; a mover including a permanent magnet and at least one inner yoke superposed in an axial direction of the stator, the mover being inserted into the tubular stator as axially displaceable relative to the stator through energization to the coil; and an inner tubular part provided at the outer yoke being superposed on an inner peripheral face of the coil to have a magnetic gap, wherein the at least one inner yoke has a thick part at an outer peripheral part thereof, and a lightening part at an inner peripheral part thereof so that an axial dimension of the inner yoke is smaller in a formation part of the lightening part than in the thick part.

Abstract: A vibration-damping electromagnetic actuator including: a tubular stator; a movable member displaceable relative to the stator in an axial direction, and being inserted in the stator; a housing including a tubular peripheral wall and being attached to the stator; a support rubber elastic body elastically connecting the movable member to the housing; and a coil member and an armature displaceable relative to the coil member disposed at one and the other of the stator and the movable member respectively. The stator is arranged in an inner periphery of the peripheral wall, and a gap is provided between the peripheral wall and the stator in an axis-perpendicular direction. The stator is attached to the housing in a state aligned with the movable member by means of displacement of the stator relative to the housing in the axis-perpendicular direction.

Abstract: A vibration-damping electromagnetic actuator including: a stator; a movable member displaceable relative to the stator, and being disposed within or about it; a coil member with a coil generating a magnetic field through energization, which is disposed at one of the stator and the movable member; an armature displaceable relative to the coil member by an effect of the magnetic field generated by the coil, which is disposed at the other one of the stator and the movable member; a tubular guide sleeve disposed between the stator and the movable member so that the movable member is slidable along the guide sleeve; and an elastic support body fixed to the guide sleeve being clamped by the stator at a portion of the elastic support body apart from the guide sleeve so that the guide sleeve is elastically supported by the stator.

Abstract: An electromagnetic actuator including: a stator; a mover attached displaceable in relation to the stator; a plurality of plate springs elastically coupling the stator and the mover; and a coil member attached to one of the stator and the mover. Each of the plate springs includes an outer circumference attachment part and a center attachment part respectively attached to one and another of the stator and the mover. A plurality of spiral-shaped connection arm parts are provided at equal intervals in a circumferential direction radially between the outer circumference attachment part and the center attachment part so as to extend in a radial direction while being inclined in the circumferential direction. The plate springs overlap in a thickness direction and all of the plate springs are mutually formed with a same material and in a same shape.

Abstract: Provided is a charger holder supporting a personal digital assistant (PDA) when a rechargeable battery included in the PDA is to be charged quickly. A charger holder supporting a PDA when a rechargeable battery included in the PDA is to be charged, includes a power source connecting section to which a voltage converter capable of varying a voltage value of an output voltage is connected, a voltage value instructing section instructing a voltage value of the output voltage to the voltage converter, and a terminal connecting section to which the PDA is connected for receiving a DC power from the voltage converter according to an instruction from the voltage value instructing section.

Abstract: An electromagnetic actuator including: a stator; a mover attached displaceable in relation to the stator; a plurality of plate springs elastically coupling the stator and the mover; and a coil member attached to one of the stator and the mover. Each of the plate springs includes an outer circumference attachment part and a center attachment part respectively attached to one and another of the stator and the mover. A plurality of spiral-shaped connection arm parts are provided at equal intervals in a circumferential direction radially between the outer circumference attachment part and the center attachment part so as to extend in a radial direction while being inclined in the circumferential direction. The plate springs overlap in a thickness direction and all of the plate springs are mutually formed with a same material and in a same shape.

Abstract: An electromagnetic actuator including a plate spring elastically coupling a stator and a mover. The plate spring includes an outer circumference attachment part and a center attachment part respectively attached to one and another of the stator and the mover. A plurality of spiral-shaped connection arm parts are provided at equal intervals in a circumferential direction radially between the outer circumference attachment part and the center attachment part. A direction recognizer is provided such that an orientation of the plate spring in the circumferential direction is recognizable from outside. The direction recognizer arranges the plate spring such that connection sites of the connection arm parts to the center attachment part and the outer circumference attachment part are circumferentially separated from at least one of input directions of a main load and a maximum load in a radial direction.

Abstract: A vibration damping device, including: first and second mounting members spaced apart from one another; an elastic body interposed between and connecting the two mounting members; a diaphragm cooperating with the elastic body to define therebetween a fluid chamber; and a partition structure including a partition member and a flexible movable plate disposed in a central opening of the partition member so as to divide the fluid chamber into primary and auxiliary fluid chambers communicating through an orifice passage, wherein the movable plate has a primary-fluid-chamber-side recess which is formed in one of opposite surfaces thereof on the side of the primary fluid chamber and an auxiliary-fluid-chamber-side groove in the other surface located on the side of the auxiliary fluid chamber so as to be positioned radially outwardly of the recess and which continuously or discontinuously extends in the circumferential direction.

Abstract: A vibration damping device, including: first and second mounting members spaced apart from one another; an elastic body interposed between and connecting the two mounting members; a diaphragm cooperating with the elastic body to define therebetween a fluid chamber; and a partition structure including a partition member and a flexible movable plate disposed in a central opening of the partition member so as to divide the fluid chamber into primary and auxiliary fluid chambers communicating through an orifice passage, wherein the movable plate has a primary-fluid-chamber-side recess which is formed in one of opposite surfaces thereof on the side of the primary fluid chamber and an auxiliary-fluid-chamber-side groove in the other surface located on the side of the auxiliary fluid chamber so as to be positioned radially outwardly of the recess and which continuously or discontinuously extends in the circumferential direction.

Abstract: A fluid-filled active vibration damping device for actively damping a vibration of a desired object, wherein an elastically deformable elastic body and an oscillating body partially define a fluid chamber filled with a non-compressible fluid, and the oscillating body is elastically supported by an elastic support member such that the oscillating body is oscillatable by an actuator, so as to control a pressure of the non-compressible fluid in the fluid chamber, and wherein a control device controls the actuator by applying thereto a pulse signal whose frequency corresponds to a frequency of the vibration of the desired object, and the oscillating body has a natural frequency fa which satisfies an inequality, (1/{square root over (2)})F<fa<2F.

Abstract: Active damping oscillator including first magnetic pole portions fixed to one of an inner shaft member and an outer sleeve, second magnetic pole portions fixed to the other of the shaft member and outer sleeve, at least one permanent magnet associated with the first magnetic pole portions, and at least one coil associated with the second magnetic pole portions, and wherein the first magnetic pole portions and the second magnetic pole portions are opposed to each other in a radial direction of the shaft member with a predetermined radial gap therebetween, and are offset from each other in an axial direction of the shaft member such that the shaft member is held in a predetermined neutral axial position by first magnetic forces of the first magnetic pole portions which act between the first and second first magnetic pole portions, in a non-energized state of at least one coil, and such that the shaft member and outer sleeve are axially moved relative to each other against the first magnetic forces by second mag

Abstract: A fluid-filled vibration damping device including an elastic body connecting two mutually spaced-apart mounting members and partially defining a primary fluid chamber filled with a non-compressible fluid a pressure of which changes upon application of a vibrational load between the mounting members, and a movable member which partially defines an auxiliary fluid chamber filled with the non-compressible fluid and communicating with the primary fluid chamber through an orifice. The movable member is oscillated to cause a periodic pressure change of the fluid in the auxiliary fluid chamber, by a periodic change of an air pressure which is applied to a working air chamber formed on one of opposite sides of the movable member which is remote from the auxiliary fluid chamber.