An actuator for moving a load has a frame forming a race between two surfaces thereof, at least two elements joined together by at least one flexible member, the elements and the at least one flexible member being disposed between the two surfaces of the frame that forms a race, one of the elements further joined to the load by a portion of the at least one flexible member, wherein when an element comes into contact with a surface of the frame it will stick thereto absent a repelling force, and ...

A stepping exerciser includes a base having a pair of inclined pivot axles, a pair of foot pedals having one end rotatably attaching to the inclined pivot axles, to allow the foot pedals to be stepped downwardly and outwardly by a user, and a lever rotatably attached to the base and having two ends engaged beneath the foot pedals, to couple the foot pedals together, and to allow one of the foot pedals to be moved upwardly when the other foot pedal is stepped downwardly by the user. The lever inc...

In a motor having a rotor which is a permanent magnet, the rotor is in the form of a cylinder from which portions have been cut forming surfaces symmetrical with respect to the axis of the cylinder. The moment of inertia of the rotor is thereby reduced so that response to a magnetic impulse is more rapid. Further, the plane of magnetism is asymmetric with respect to the plane bisecting the cylindrical surfaces of the rotor, thereby providing for greater thrust under the effect of the yoke and in...

A stepping exerciser includes a bracket, a rack, a pair of pedal holders rotatably mounted to an upper portion of the bracket, a pair of pedal holders rotatably mounted to an upper portion of the bracket, a pair of pedals, a beam pivoting the bracket to an upper portion of the rack, a pair of connecting levers respectively rotatably connected between the pedals and the rack, a pair of wheels and a pair of flexible pulling members. The wheels are rotatably installed on the rack. Each flexible pul...

A stepping motor comprises a stator (3) with at least two magnetic circuits and a rotor (2) that is rotatably mounted on the stator through a single ball bearing having four contact points. The rotor comprises a mutipolar magnet (5) essentially in the form of a disc having a central opening (6). One rotor portion (7) is fixed at one radially external portion of the magnet (5), while one radially internal portion of the magnet is arranged within the air gap of said magnetic circuits.

A stepping exerciser includes a base having a transverse rod on which is mounted a U-shaped member, a pair of dampers each having an end pivotally connected with the U-shaped member, a primary rocking arm fixedly connected to an inverted U-shaped seat having a through hole in which is fitted a sleeve, the inverted U-shaped seat being pivotally connected with the U-shaped member by a bolt extending through the U-shaped member, sleeves, and the inverted U-shaped member to engage with a nut, an upp...

A stepping motor includes: a magnet; a coil arranged concentrically with the magnet and to be opposed to a magnet, a predetermined clearance being provided between the magnet and the coil; and a magnetic member that surrounds the coil and includes a magnetic pole interposed between the magnet and the coil.

A stepping motor comprising a circular stator core having a plurality of pole teeth at an inner circumferential edge and an air core coil fitted to the periphery of the pole teeth. An insulating film is formed on the surface of the air core coil. An insulation sheet is sandwiched between an edge long the axial direction of the air coil and the stator core.

A stator is press fitted into a recess of a casing. The recess has a chamfered portion. The chamfered portion is arranged between an inlet opening end of the recess and a bottom of the recess in such a manner that a width of the recess is progressively increased along the chamfered portion from a bottom side toward an inlet opening end side of the recess. The chamfered portion has a plurality of slant surfaces, which are arranged one after another in the press fitting direction of the stator. An...

A small-sized and low-cost stepping motor includes a stator made of a soft magnetic material integrally having first and second outer magnetic poles, a first coil wound around a first bobbin externally fitted to the first outer magnetic pole, a second coil wound around a second bobbin externally fitted to the second outer magnetic pole, and a rotor part made of a soft magnetic material having a magnet fixed around a first column part by interference fit. The rotor part is rotatably supported by ...