Abstract: A resin powder for solid freeform fabrication includes a particle having a pillar-like form, wherein the ratio of the height of the particle to the diameter or the long side of the bottom of the particle is 0.5 to 2.0, the particle has a 50 percent cumulative volume particle diameter of from 5 to 200 ?m, and the ratio (Mv/Mn) of the volume average particle diameter (Mv) to the number average particle diameter (Mn) of the particle is 2.00 or less.

Abstract: A speaker drive integrated circuit of the present invention includes: a load connection status detecting circuit configured to cause a current to flow from an external power supply to one of output terminals when an output side of an amplifying circuit is set to a high impedance state and detect whether a load connection status is normal, open, or short based on a voltage generated at the output terminal; and a transmitting terminal through which a signal indicating a detection result by the load connection status detecting circuit is output to outside.

Abstract: An amplifier circuit that uses multiple power supplies includes a class D amplifier circuit, input bias generator and feedback network. By creating a voltage using the input bias generator at the non inverting terminal of the integrator, the inverting terminal of the integrator will follow the same voltage as the non inverting terminal. The offset voltage between the input signal DC bias and the input DC bias of the integrator will create an offset current flowing through the feedback resistors, thus resulting in the desired output DC bias.

Abstract: An amplifier circuit that uses multiple power supplies includes a class D amplifier circuit, input bias generator and feedback network. By creating a voltage using the input bias generator at the non inverting terminal of the integrator, the inverting terminal of the integrator will follow the same voltage as the non inverting terminal. The offset voltage between the input signal DC bias and the input DC bias of the integrator will create an offset current flowing through the feedback resistors, thus resulting in the desired output DC bias.

Abstract: A output offset protection circuit provides protection of the load and the power amplifier through monitoring the temperature of the power transistor in the operational amplifier to detect fault conditions of an output block. In the output offset protection circuit, a sensor block monitors the temperature differences between the power transistors, while the output block is driving the load. Upon detection of the temperature differences reaching a 1st threshold level, the cutoff block sends a cutoff signal to a protection switch block, and the hysteresis block is activated. The hysteresis block shifts the threshold level lower to the 2nd threshold level. The sensor block continues to monitor the temperature differences until the 2nd threshold level is reached. Then the cutoff block is deactivated.

Abstract: A output offset protection circuit provides protection of the load and the power amplifier through monitoring the temperature of the power transistor in the operational amplifier to detect fault conditions of an output block. In the output offset protection circuit, a sensor block monitors the temperature differences between the power transistors, while the output block is driving the load. Upon detection of the temperature differences reaching a 1st threshold level, the cutoff block sends a cutoff signal to a protection switch block, and the hysteresis block is activated. The hysteresis block shifts the threshold level lower to the 2nd threshold level. The sensor block continues to monitor the temperature differences until the 2nd threshold level is reached. Then the cutoff block is deactivated.

Abstract: A voltage level detector (8) which activates itself by monitoring the voltage level (VSTB) at a standby pin (5) during power-up of an audio power amplifier (10), and can detect fault conditions of an output block (2), such as a short to ground at an output terminal (3), in contrast to conventional protection circuits that can operate only after power-up.

Abstract: A voltage level detector (8) activates itself through monitoring the voltage level (VSTB) at a standby pin (5) during power-up of an audio power amplifier (10), and can detect fault conditions of an output block (2), such as a short to ground at an output terminal (3), in contrast to conventional protection circuits that can operate only after power-up. In a voltage level detector (8), a second short-to-ground detection block (81) monitors the voltage levels (VSTB and Vout) at the standby pin (5) and the output terminal (3) during power-up. Upon detection of the voltage level (VSTB) reaching a first threshold level (Vth1) and a short to ground at the output terminal (3), the second short-to-ground detection block (81) activates a cutoff signal generating block (83). The recovery block (82) monitors the voltage level (VSTB) at the standby pin (5) during power-up.

Abstract: A voltage level detector (8) activates itself through monitoring the voltage level (VSTB) at a standby pin (5) during power-up of an audio power amplifier (10), and can detect fault conditions of an output block (2). Upon detection of the (VSTB) reaching a first threshold level (Vth1) and a short to ground at the output terminal (3), the second short-to-ground detection block (81) activates a the second cutoff signal generating block (83). The recovery block (82) monitors the voltage level (VSTB) at the standby pin (5) during power-up. Upon detection of the voltage level (VSTB) reaching a second threshold level (Vth2>Vth1), the recovery block (82) deactivates the cutoff signal generating block (83). The cutoff signal generating block (83) sends a cutoff signal (Sc) to a protection switch block (71) as a request for turn-off of protection switches (7A) on activation, and on the other hand, terminal the sending of the cutoff signal (Sc) on deactivation.

Abstract: A voltage level detector (8) activates itself through monitoring the voltage level (VSTB) at a standby pin (5) during power-up of an audio power amplifier (10), and can detect fault conditions of an output block (2), such as a short to ground at an output terminal (3), in contrast to conventional protection circuits that can operate only after power-up. In a voltage level detector (8), a second short-to-ground detection block (81) monitors the voltage levels (VSTB and Vout) at the standby pin (5) and the output terminal (3) during power-up. Upon detection of the voltage level (VSTB) reaching a first threshold level (Vth1) and a short to ground at the output terminal (3), the second short-to-ground detection block (81) activates a cutoff signal generating block (83). The recovery block (82) monitors the voltage level (VSTB) at the standby pin (5) during power-up.

Abstract: In a rectilinear motion driving apparatus, a shaft is fitted into a cylindrical body in a coaxial state, and a plurality of cylindrical coil rollers are interposed between the cylindrical body and the shaft by press fit so as to roll at a predetermined inclined angle to the axial direction. These cylindrical coil rollers are contacted with an outer peripheral surface of the shaft and an inner peripheral surface of the cylindrical body with a pressure contact force, and the cylindrical body or the shaft is rotated so that the shaft or the cylindrical body makes a rectilinear motion toward an axial direction. A pressure contact force of both inner and outer surfaces of the cylindrical coil roller to the cylindrical body and the shaft is set either higher or lower in the vicinity of the end portion thereof than the intermediate portion of the cylindrical body.

Abstract: In a rectilinear motion driving apparatus, a shaft (6) is fitted into a cylindrical body (4) in a coaxial state, and a plurality of cylindrical coil rollers (3a) is interposed between the cylindrical body and the shaft by press fit so as to roll at a predetermined inclined angle to the axial direction. Further, these cylindrical coil rollers (3a) are contacted with an outer peripheral surface of the shaft and an inner peripheral surface of the cylindrical body with a pressure contact force, and the cylindrical body or the shaft is rotated so that the shaft or the cylindrical body makes a rectilinear motion toward an axial direction. A pressure contact force of both inner and outer surfaces of the cylindrical coil roller (3a) to the cylindrical body (4) and the shaft (6) is set higher than an intermediate portion of the cylindrical body (4) in the vicinity of the end portion thereof, or is set lower than the intermediate portion of the cylindrical body (4) in the vicinity of the end portion thereof.

Abstract: In binding packing bags or the like, there has been difficulties with performing a speedy binding operation to enclose and bind around the binding part instantly, with a small range of objects to be bound, and with loss of material sheet which accrues from cutting.In order to cope with such difficulties, the present invention provides, the binding device formed in a unified manner out of a filmy and flexible material sheet; wherein, the engaging portion 3 with the hole 4 formed therein, the narrow winding portion 2 which is extended from a side of said engaging portion 3 in order to wind around the binding part of the object to be bound, and the hooking portion 1 which is formed at the tip of said winding portion 2 in a nearly L-shaped form in order to be inserted into and hooked to said hole.

Abstract: In a brake device of a linear moving body, a brake member is provided with a hole and a rod is fitted to the hole in clearance fit, and the brake member is moved slantwise and rotational moment is produced in the brake member thereby brake is applied to the rod in relative motion. The brake member is arranged movable slantwise using position as fulcrum remote from the axial center of the rod, and notched portions having width smaller than diameter of the hole are formed at symmetric positions within the hole along a plane including the fulcrum and the axial center of the rod. In this brake device, rotational force (rotational moment) is supplied to the brake member, and drag is produced at a fitting surface within the hole and frictional force due to the drag is made brake force and frictional force due to the drag of the fitting surface is made reaction force of the rotational force.

Abstract: This rodless cylinder is a rodless cylinder of pneumatic driving slit type, and a cyliner tube is provied with a curved part bent in the axial direction, and a slit of nearly trapezoidal section is formed along the longituinal direction of the inner circumferential side of the curve, and a seal belt with both ends fixed within the cylinder tube is arranged to be fitted to the slit and a piston is inserted within the cylinder. The piston has a piston body and seal pistons connected rockable to both sides of the piston body, and the piston body is provied with a connecting part projecting from the slit to the outside and a belt inserting hole for insertion of the seal belt. On an outer circumferential part of the piston body and the seal pistons, an annular groove with a bottom being a part of a spherical surface is formed and a wear ring having an inner circumferential surface with the same curved surface is inserted slantwise within the annular groove.

Abstract: A vane-type rotary actuator in which a disc like seal member made of an elastic material with a hole provided in the middle thereof is pressed in place in contact with a flange surface. With seal material thus somewhat deformed in the radial direction thereof, pressure required for sealing is generated at the inner surface of a cylinder and the outer surface of a shaft cylinder.

Abstract: A laminate consisting essentially of a layer of a thermoplastic resin (A) and a layer of a vinylidene fluoride resin (B), the layer of the resin (A) containing (C) polymerized units of an ethylenic unsaturated carboxylic acid ester in a proportion of 3 to 80% by weight based on the total weight of the layer of the resin (A). The polymerized units (C) of an ethylenic unsaturated carboxylic acid ester may exist either as a copolymer constituent of the resin (A) or in the form of an ethylenic unsaturated carboxylic acid ester polymer (C') blended in the layer of the resin (A).

Abstract: In a rotary actuator having a relatively small angle of rotation comprising a cylinder having a sectoral section and a vane slidably moving within the cylinder, a sectoral cylindrical seal member of synthetic resin is fitted in contact with the inner surface of the cylinder, and compressed axially by means of end covers. Thus, the seal member in cooperation with a packing provided on the outer surface of the vane prevents leakage of fluid through the corners of the surface on which the vane slides. Manufacturing of the vane in this case may be facilitated by bonding a gasket to the bottom of the peripheral groove of the vane so as to place the packing on the gasket.