Abstract: An electromagnetic revolutionary piston pump is disclosed. The electromagnetic revolutionary piston pump includes an inner tube, an outer tube, two annular separation plates, a plurality of pistons, and an electromagnetic coil. The inner tube has a plurality of first and second through holes, and it accommodates the abovementioned pistons to revolve inside. The outer tube has an intake opening and an exhaust opening, and it wraps the inner tube inside. In addition, the annular separation plates are disposed inside the outer tube for dividing the inner space of the outer tube into a first airproof space and a second airproof space. The first airproof space connects the intake opening and communicates the inner space of the first tube via the first through holes; the second airproof space connects the exhaust opening and communicates the inner space of the first tube via the second through holes.

Abstract: A structure of speaker is disclosed. The disclosed speaker structure includes at least a bobbin, a coil, a membrane, and a magnetic assembly. The coil is wound around the side surface of the bobbin, and the membrane is disposed at end of the bobbin. Besides, the magnetic assembly is suspended in a through hole of the bobbin and have one end adhered to the membrane.

Abstract: A locking device and its assemblage are provided for confining an object such as a shaft of a motor. The locking device is used to confine the shaft having an end with a recess portion having a defining surface to prevent the shaft from being displaced in an axial direction. The locking device is a geometrically closed-loop body having an opening, and having a flexibility so that the shaft will pass through the opening and the end of the shaft will thus be confined by the locking device while the force disappears. The locking device is free from contact with the recess portion of the shaft when the shaft is spinning. A simple process can be used to assemble and disassemble the locking assemblage.

Abstract: A fan. The fan comprises a frame, a stator, a rotor and a magnetic member. The stator is connected to the frame. The rotor has a shaft. The magnetic member, attracting the shaft, is disposed corresponding to the shaft without making contact therewith. The magnetic member may be disposed outside or inside the frame or on the stator.

Abstract: A pump. The pump includes a housing, a conductor, a first coil and a second coil. The housing has an intake and an output. The conductor is movably disposed in the housing. The first coil generates a magnetic force attracting the conductor toward the output when electrified such that fluid therebetween flows out of the housing. The second coil generates a magnetic force attracting the conductor toward the intake when electrified such that fluid therebetween flows between the conductor and the output.

Abstract: A motor. The motor includes a stator, a rotor, a top magnetic structure, and a bottom magnetic structure. The stator is disposed in a frame. The rotor is also disposed in the frame, corresponding to the stator. The rotor comprises a shaft, extended axially from the rotor. The shaft does not contact the stator or the frame. The bottom magnetic structure is at the bottom of the frame. The top magnetic structure is on the top of the frame. The top and bottom magnetic structures are opposite to each other in an axial direction. Magnetic attraction generated between the first magnetic structure and the second magnetic structure attracts and positions the shaft therebetween such that the first magnetic structure, the second magnetic structure, and the shaft are coaxially aligned.

Abstract: A locking device and its assemblage are provided for confining an object. The locking device is used to confine the object having an end having a recess having a defining surface to prevent the object from being displaced in a direction. The locking device is a geometrically closed-loop body having a hollow portion, and has a flexibility so that upon being applied with an external force, the object will pass through the hollow portion and the end will thus be confined by the locking device while the force disappears. A simple process can be used to assemble and disassemble the locking assemblage.

Abstract: A locking device and its assemblage are provided for confining an object such as a shaft of a motor. The locking device is used to confine the shaft having an end with a recess portion having a defining surface to prevent the shaft from being displaced in an axial direction. The locking device is a geometrically closed-loop body having an opening, and having a flexibility so that the shaft will pass through the opening and the end of the shaft will thus be confined by the locking device while the force disappears. The locking device is free from contact with the recess portion of the shaft when the shaft is spinning. A simple process can be used to assemble and disassemble the locking assemblage.

Abstract: A locking device and its assemblage are provided for confining an object. The locking device is used to confine the object having an end having a recess having a defining surface to prevent the object from being displaced in a direction. The locking device is a geometrically closed-loop body having a hollow or cut out portion, and having a flexibility so that upon being applied with an external force, the object will pass through the hollow portion and the end will thus be confined by the locking device while the force disappears. A simple process can be used to assemble and disassemble the locking assemblage.

Abstract: A sleeve bearing structure for holding a shaft rotating in a first direction includes a bearing having an inward wall defining therein a through hole, a bearing stand engaged with the bearing for supporting the bearing and having a cavity which is in communication with the through hole at the bottom thereof below the bearing, and a first set of threads formed in the first direction on a first part of the inward wall.

Abstract: To achieve an efficacy of allowing a shaft to spin in high speed without contacting the bearing in which the shaft is seated, a bearing is configured to comprise an inner ring which includes: at least two slant arc surface zones each spaced out from the surface of the shaft with a gap shrinking, in the spinning direction of the shaft, to a thickness approximately equal to a preset minimum value.

Abstract: The stator structure for improving the efficiency of motor is described which includes: a) a ring; b) N pieces of upper salients spacedly connected to the ring and located on a first plane; c) N pieces of lower salients spaced at intervals and located on a second plane; d) N pieces of waist posts arranged between the first and second planes for forming a magnetically conductive path, wherein one end of each of the waist posts is connected to the ring within an interval between two adjacent upper salients and the other end is connected to a corresponding one of N pieces of lower salients located between two adjacent upper salients. Its forming method includes steps of: a) integrally forming a hollow cogged plate consisting of a first ring, N pieces of short and N pieces of long salients alternately connected to the first ring; and b) bending N pieces of long salients to form the stator structure having N pieces of waist posts, N pieces of upper salients, and N pieces of lower salients.