Patents Examined by Matt Nguyen
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Patent number: 5168188Abstract: A canned motor equipped with a stator chamber, a load side bearing bracket and an opposite side bearing bracket on the load side and opposite side of the stator chamber. The stator chamber is formed by integrally welding a stator core, an outside can, an inside can, a load side end plate and opposite side end plate. The load side bearing bracket and the opposite side bearing bracket each includes a bearing boss supporting a radial bearing and a shaft seal thereon. The improvement consists of the end plate and the bearing bracket on the load side being integrally formed to provide a single shell structure and the inside can being welded to the bearing boss of the load side bearing bracket. By this arrangement, the number of components required for the motor is reduced, axial length of the motor is shortened and heat radiation from the end surface of the stator chamber on the load side is enhanced.Type: GrantFiled: July 12, 1991Date of Patent: December 1, 1992Assignee: Ebara CorporationInventors: Masakazu Yamamoto, Hiromi Sakacho, Seiichirou Yamada
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Patent number: 5155400Abstract: A displacement control motor provided with a continuously rotary shaft and a reel capable of changing deflection angle according to the rotary speed of the motor whereby other articles can be carried, driven, or controlled via the reel; the motor including a concealed motor, a driving gear, a driven gear, a reel shaft seat and a load device, wherein the rotary shaft is connecded with the driving gear while the driven gear meshes with the driving gear, the driving and driven gears being both pivoted to the shaft seat and the driven gear being linked with the load device, whereby the rotary shafts of the driving and driven gears are located on the same shaft seat and the driven gear is additionally loaded by the load device and a balance spring is used to restrict the displacement of the driven gear so that by means of the change of rotary speed of the rotary shaft, the deflection magnitude of the reel can be controlled.Type: GrantFiled: October 1, 1991Date of Patent: October 13, 1992Inventor: Lee Ming-Ji
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Patent number: 5140206Abstract: An actuator which comprises a reversible motor, a solenoid, movable clutch disc to be attracted by the solenoid, a driving clutch disc supported rotatably between the movable clutch disc and the solenoid and driven by the motor. The movable clutch disc and the driving clutch disc are provided with teeth to be engaged with each other and having inclined engaging flanks so as to be disengaged from each other due to slippage caused between the inclined engaging flanks of the teeth. According to this invention, it is possible to interrupt a force larger than a predetermined value and transmit reliably a smaller force to prevent damage to the throttle members.Type: GrantFiled: July 26, 1991Date of Patent: August 18, 1992Assignee: Jidosha Denki Kogyo K.K.Inventors: Jiro Hasegawa, Yuji Kawamura
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Patent number: 5138207Abstract: A superconductor motor (10) comprises a stator assembly (14) which includes a plurality of solenoids (40-44). A rotor assembly (12) includes a disk (20) of superconductive material in which are entrapped magnetic lines of flux which cause the rotor to function as a magnet. The lines of flux tend to creep throughout the disk over time thereby reducing the magnetic properties of the rotor assembly and decreasing motor performance. A plurality of coils (48a-48l) are carried by the disk. The stator solenoids are energized to produce rotation of the rotor, and the coils are energized in a predetermined manner to compensate for the flux creep in the disk and to restore the rotor assembly's magnetic properties thus to prevent deterioration in motor performance.Type: GrantFiled: April 4, 1991Date of Patent: August 11, 1992Assignee: Emerson Electric Co.Inventors: Mohamed A. Hilal, Jerry D. Lloyd, Alan D. Crapo
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Patent number: 5111097Abstract: A generator rotor pole crossover including a substantially U-shaped portion from which extend legs curving outwardly. The U-shaped portion is thickened in one direction but thinned in another direction, relative to the leg thickness. This configuration provides flexibility to the crossover, decreased stress and relatively constant cross section of resistance purposes. The legs are brazed to the copper conductor winding ends by scarf and lap joints, respectively. The crossover may replace defective crossovers in the field by removing only the end plate of the generator. This allows installation in a short time without risk of damage to generator insulation.Type: GrantFiled: November 30, 1990Date of Patent: May 5, 1992Assignee: Westinghouse Electric Corp.Inventors: Mark B. Londergan, Albert C. Sismour, Jr., John E. Richardson
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Patent number: 5089733Abstract: In a DC brushless motor, a position detecting magnet (1b, 31b) is arranged in correspondence with a driving magnet (1a, 31a) which is for causing torque, and the position detecting magnet (1b, 31b) includes a non-magnetized part in each pole to make a predetermined distribution of flux which can be detected by only one magnetic detecting element (7); and signals detected by the magnetic detecting element are developed into three (or two)-phase full-wave driving signals through a necessary signal processing circuit (14) etc.Type: GrantFiled: September 4, 1990Date of Patent: February 18, 1992Assignee: Matsushita Electrical Industrial Co.Inventor: Toshiaki Fukuoka
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Patent number: 5072145Abstract: A generator housing including a housing module having at least one relatively complex internal passage formed therein and housing flow control components for circulating a fluid coolant through the generator. The housing module is formed by forming a plurality of sub-components each having at least one relatively simple passage formed therein for defining part of the at least one relatively complex internal passage. The sub-components are combined together as by bonding to form the housing module with at least one relatively complex internal passage. The flow control components are contained in bores within the housing module in fluid communication with the relatively complex internal passage therein. The housing module if formed of a relatively lightweight, non-metallic material to enable reduction in the weight of the generator housing in cost-effective and technically accepted manner thereby providing an improved generator which can be used in aircraft.Type: GrantFiled: September 5, 1990Date of Patent: December 10, 1991Assignee: Sundstrand CorporationInventors: Timothy A. Davis, David A. Stark, Scott M. Thomson, Gary W. Wigell, Duncan Lawrie, Eugene V. Czerniewski
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Patent number: 5055727Abstract: A rotary drive mechanism includes a rotary solenoid having a stator and multi-poled rotor. A moving member rotates with the rotor and is biased by a biasing device. The biasing device causes a further rotational movement after rotation by the rotary solenoid. Thus, energization of the rotary solenoid moves the member in one direction to one position and biases the biasing device against the member. Subsequently, de-energization of the rotary solenoid causes the biasing device to move the member in the same direction to another position from where the moving member is again movable by energization and de-energization of the rotary solenoid. Preferably, the moving member is a multi-lobed cam having the same number of lobes as the rotor has poles. An anti-overdrive device is also preferably provided for preventing overdrive in the forward direction or a reverse rotation of the moving member and for precisely aligning the moving member.Type: GrantFiled: February 26, 1990Date of Patent: October 8, 1991Assignee: The United States of America as represented by the United States Department of EnergyInventor: Eugene W. Kenderdine
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Patent number: 5036238Abstract: A rotor of a salient-pole type rotary machine is disclosed in which field coils are held by a coil brace disposed between adjacent magnetic poles. In addition to the coil brace, a holder provided with an elastic member is also disposed between the magnetic poles, and another elastic member is disposed between the coil brace and the said holder, whereby the said two elastic members are utilized for the fixing of the field coils and for the pressing force of the coil brace. And the whole of the coil holding mechanism is separated from a spider. This construction permits the field coils to be held in place without any great change in the holding force under any dimensional change.Type: GrantFiled: July 11, 1990Date of Patent: July 30, 1991Assignee: Mitsubishi Denki Kabushiki KaishaInventor: Masaaki Tajima