Patents Examined by Joshua Benitez
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Patent number: 9537370Abstract: Hand-held machine tool having an outer housing extending substantially along a longitudinal axis, with an electric drive unit accommodated in this outer housing, and with a tool arrangement which is disposed at a first end of the electric drive unit. The outer housing of the machine tool has a defined inner contour and the electric drive unit and the tool arrangement have a defined outer contour. The outer contour and the inner contour of the outer housing are at a predetermined minimum spacing from each other. At least one inlet opening for cooling air is disposed in an end region of the outer housing. The electric drive unit drives a fan arrangement which draws in through the at least one inlet opening cooling air which flows substantially parallel to the rotational axis of the electric drive unit through the machine tool and flows out of the outer housing to the outside at the outer contour of the machine tool.Type: GrantFiled: April 22, 2013Date of Patent: January 3, 2017Assignee: C. & E. FEIN GMBHInventors: Achim Hess, Uwe Früh, Jürgen Blickle
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Patent number: 9531242Abstract: Cooling apparatuses and methods comprising cooling apparatuses, such as those configured to be coupled to and/or cool electric machines (e.g., motors, generators, and the like).Type: GrantFiled: March 8, 2013Date of Patent: December 27, 2016Assignee: TECO-Westinghouse Motor CompanyInventors: Devdatta P. Kulkarni, Gabriel Rupertus, Edward Chen
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Patent number: 9531228Abstract: The electric rotating machine has the structure in which, for each one of the slots formed in its stator core, each of the innermost and outermost electrical conductors housed in the slot includes a R-chamfered portion formed in a bent portion thereof projecting outside from the slot and bent along a circumferential direction of the stator core. The R-chamfered portion is located at a radially inner or outer corner of the bent portion at which a side surface of the bent portion on the side being circumferentially bent intersects with a side surface of the bent portion on the radially inner or outer side. The R-chamfered portion is formed of a curved surface having a curvature radius larger than a curvature radius of the other three corners of the bent portion.Type: GrantFiled: August 20, 2013Date of Patent: December 27, 2016Assignee: DENSO CORPORATIONInventors: Hiroshi Kaneiwa, Yuuichirou Itou
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Patent number: 9525318Abstract: Adverse effects of a large assembling step comparable to tolerance of stacking members among constituent parts are prevented. At least two components and, among a voltage regulator, a brush holder and a rectifier, that are fastened with each other are provided with both component-fixing portions and fastening-together portions and for fastening the components together with each other, and an assembling step absorbing portion is provided at least at the fastening-together portion that is not close to the component-fixing portions of the respective components.Type: GrantFiled: October 1, 2012Date of Patent: December 20, 2016Assignee: Mitsubishi Electric CorporationInventors: Kazunori Tanaka, Toshiyuki Oonishi, Kyoko Higashino
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Patent number: 9515541Abstract: An audio resonance vibrator includes a bracket, an elastic frame cooperatively with the bracket forming a housing having a receiving space, a magnetic circuit unit and a vibrating unit accommodated in the receiving space. The vibrating unit includes a vibrating plate and a coil assembly. The elastic frame further includes a bottom, a side wall extending vertically from the bottom, a supporting portion extending inwardly from the sidewall along a direction parallel to the bottom wall of the elastic frame, a slot formed between the bottom of the elastic frame for receiving the vibrating plate.Type: GrantFiled: August 21, 2013Date of Patent: December 6, 2016Assignee: AAC Acoustic Technologies (Shenzhen) Co., Ltd.Inventors: Yun Tang, Guanrong Zhou
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Patent number: 9509194Abstract: An electric machine, such as a generator, providing for the generation of electricity and includes a rotor generating a magnetic field and a stator having stator windings. The interaction of the magnetic field with the stator windings generates current in the windings. The generator may provide the generated current to a power output of the generator, where it may be further transmitted to an electrical load to power the load.Type: GrantFiled: January 7, 2014Date of Patent: November 29, 2016Assignee: GE AVIATION SYSTEMS LLCInventor: Charles T. Sigler
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Patent number: 9509202Abstract: The present invention provides such a vibration generator which can obtain desired power-generation efficiency even if the vibration frequency is low. A vibration generator is provided with a vibrator which includes a plurality of magnets whose same magnetic poles are arranged by being faced to one another and which vibrates by a predetermined resonant frequency; a coil spring which supports the vibrator falling toward the gravitational direction and concurrently which vibrates the vibrator by a predetermined resonant frequency; a tubular winding bobbin in the inside of which the vibrator and the coil spring vibrate; coils which are wound on the outer circumference of the winding bobbin and which are connected in series inside groups divided into two or more; and a plurality of rectification circuits, each of which rectifies the output voltages of the coils for every one of the groups.Type: GrantFiled: January 27, 2014Date of Patent: November 29, 2016Assignee: Sumida CorporationInventor: Mitsugu Kawarai
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Patent number: 9484784Abstract: Electric motor systems and methods may provide highly efficient operation. The electric motor systems and methods discussed herein provide an oil filled motor that is low speed and utilizes permanent magnets. The electric motor may utilize a large number of poles and fractional slot design. Further, in some embodiments, the electric motor systems and methods may be suitable for use downhole.Type: GrantFiled: January 7, 2014Date of Patent: November 1, 2016Assignee: HENRY RESEARCH AND DEVELOPMENT, LLCInventors: Trevor Hardway, Michael Salerno, Ronald David Wallin
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Patent number: 9484777Abstract: Provided is a rotor core of a motor, the rotor core, the rotor core including: a thin disk-shaped rotor core member; a shaft hole penetratively formed at a center of the rotor core member; a shaft press-fitted into the shaft hole; a plurality of magnet insertion holes penetratively formed at a position near to a periphery of the rotor core member for inserted coupling by a magnet; and a magnet support rotor core member in which a magnet support member tightly contacting a magnet inserted into the magnet insertion hole to a radial direction of the rotor core member is protrusively formed at the magnet insertion hole, wherein the rotor core members are stacked each at a predetermined height, and the magnet support rotor core members are arranged at an upper surface and a bottom surface of the plurality of stacked rotor core members, and the shaft is press-fitted into the shaft hole.Type: GrantFiled: July 18, 2012Date of Patent: November 1, 2016Assignee: LG INNOTEK CO., LTD.Inventor: Hyunseop Kim
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Patent number: 9444174Abstract: A connecting terminal device includes a connecting terminal body having a plurality of pin connection holes. The connecting terminal body has an outer circumferential surface with at least one arcuate groove cut out of the outer circumferential surface. The arcuate groove extends along a circumferential direction centered on a first hole of the plurality of pin connection holes provided in the connecting terminal body. The plurality of pin connection holes other than the first hole are positioned within the arcuate groove. Preferably, the connecting terminal device is part of a compressor.Type: GrantFiled: June 5, 2012Date of Patent: September 13, 2016Assignee: Daikin Industries, Ltd.Inventor: Yasutaka Ueno
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Patent number: 9431857Abstract: A permanent magnet rotor arrangement includes a rotor and a plurality of nonmagnetic, axially extending profiled tubes defining a closed channel and affixed circumferentially along the outer rim of the rotor. A plurality of permanent magnet pole pieces are arranged in the channels. A single pole piece is arranged in each channel. The cross-sectional profile of the pole piece does not correspond to the cross-sectional profile of the channel.Type: GrantFiled: November 19, 2013Date of Patent: August 30, 2016Assignee: SIEMENS AKTIENGESELLSCHAFTInventor: Henrik Stiesdal
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Patent number: 9431885Abstract: Disclosed is a voice coil motor, the motor including a mover having a bobbin equipped with a lens and a coil block secured to an outer circumference of the bobbin; a stator having a magnet that is disposed in such a way as to face the coil block; elastic members coupled to a lower end of the bobbin and connected to both ends of the coil block; a base supporting the elastic members and the stator; and a cover can covering the mover, the stator and the base, with an opening being formed in the cover can to expose the lens therethrough, wherein each of the elastic members includes a terminal portion that extends between the cover can and a side surface of the base, the terminal portion including a short-circuit prevention portion so as to inhibit a short-circuit between the terminal portion and the cover can.Type: GrantFiled: September 13, 2013Date of Patent: August 30, 2016Assignee: LG INNOTEK CO., LTD.Inventor: Sanghee Lee
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Patent number: 9419504Abstract: A hybrid induction motor includes an inductive rotor and an independently rotating permanent magnet rotor. The inductive rotor is a squirrel cage type rotor for induction motor operation at startup. The permanent magnet rotor is variably coupled to the inductive rotor (or to a motor load) through a clutch and is allowed to rotate independently of the inductive rotor at startup. The independently rotating permanent magnet rotor quickly reaches synchronous RPM at startup. As the inductive rotor approaches or reaches synchronous RPM, the coupling between the inductive rotor and the inner permanent magnet rotor increases until the two rotors are coupled at the synchronous RPM and the motor transitions to efficient synchronous operation.Type: GrantFiled: April 20, 2012Date of Patent: August 16, 2016Inventor: Louis J. Finkle
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Patent number: 9419482Abstract: A rotor having an improved structure capable of achieving enhanced durability is disposed in a motor, the rotor including a sleeve having a shaft hole, through which a motor shaft extends, rotor cores spaced apart from one another in a circumferential direction of the rotor, and permanent magnets each disposed between adjacent ones of the rotor cores such that the permanent magnets are arranged in a radial manner about the sleeve. First and second cover plates may be disposed at opposite sides of the permanent magnets in an axial direction. Each of the first and second cover plates may include a shaft receiving hole to receive the motor shaft. The rotor may include a plurality of support members each having a magnet support portion arranged to support an outer end of a corresponding one of the permanent magnets in a radial direction of the rotor.Type: GrantFiled: January 15, 2013Date of Patent: August 16, 2016Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jae Young Lee, Young Gyu An, Deok Jin Kim, Young Kwan Kim, Byung Ryel In, Jin Woo Han
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Patent number: 9419484Abstract: A stator includes an annular stator core and a stator coil. The stator coil is formed of electric conductor segments each of which is bent in its thickness direction to include, at least, an in-slot portion and an oblique portion. The in-slot portion is received in a corresponding slot of the stator core with its width direction coinciding with a radial direction of the stator core. The oblique portion protrudes from the in-slot portion outside the corresponding slot and extends, over its entire length, along the circumferential direction of the stator core obliquely with respect to an axial end face of the stator core. The oblique portion includes a thick section on the proximal side and a thin section on the distal side. Each corresponding pair of the oblique portions of the electric conductor segments are connected by joining the thin sections of the oblique portions.Type: GrantFiled: March 31, 2014Date of Patent: August 16, 2016Assignee: DENSO CORPORATIONInventor: Takashi Tokizawa
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Patent number: 9419485Abstract: A coil wire for a rotating electrical machine forms a coil body wound on teeth of a stator for the rotating electrical machine and includes an element wire assembly and a covering member. The element wire assembly has a plurality of element wires coated with insulation and bound together. The covering member is an electrical conductive member covering around the element wire assembly and provided with a conductive side surface and a slit. The conductive side surface is a surface with which magnetic flux from the teeth is linked when the coil wire is wound on the teeth. The slit is provided on the conductive side surface along a longitudinal direction of the coil wire, and the slit extends from an inner peripheral side to an outer peripheral side of the coil body in an coil end of the coil body.Type: GrantFiled: December 4, 2013Date of Patent: August 16, 2016Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Ayako Hasegawa, Hiroyuki Hattori
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Patent number: 9397538Abstract: A linear motor with enhanced cooling performance, including: a stator including multiple magnetic force generating members provided in a row; a moving element including multiple coils provided in a row in an axis line direction of the stator and wound around an outside of the stator; and a heat transfer member dissipating heat generated by the coil which is between adjacent coils and along a side of the coils.Type: GrantFiled: January 10, 2012Date of Patent: July 19, 2016Assignee: FUJI MACHINE MFG. CO., LTD.Inventors: Jun-ichi Narita, Ryo Nagata, Masaki Kurono
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Patent number: 9395226Abstract: An apparatus for determining and/or monitoring at least one process variable of a medium. The apparatus includes at least one probe unit and at least one electronics unit, which supplies the probe unit with an electrical, exciter signal and which receives from the probe unit an electrical, measurement signal. The invention includes, that the probe unit has at least one inner electrode and at least one outer electrode surrounding the inner electrode.Type: GrantFiled: November 30, 2007Date of Patent: July 19, 2016Assignee: ENDRESS + HAUSER GMBH + CO. KGInventors: Armin Wernet, Roland Dieterle
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Patent number: 9379590Abstract: Systems and methods for constructing a stator for use in downhole equipment such as ESP systems, where granulated filler material is used instead of encapsulants to provide mechanical support to the stator windings, provide electrical insulation in the stator slots, and conduct heat away from the windings. In one embodiment, a stator for an electric motor includes a plurality of laminations stacked together to form a stator core. Stator windings are positioned in slots within the stator core. The stator core and windings are installed in a stator housing, and a solid, granular filler material is used to fill an unoccupied volume within the slots. Retainer fittings are secured to the stator to retain the granulated filler material in the slots.Type: GrantFiled: August 25, 2013Date of Patent: June 28, 2016Assignee: Baker Hughes IncorporatedInventor: Ketankumar K. Sheth
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Patent number: 9369022Abstract: An electric motor has multiple core portions, multiple bobbins covering the respective core portions, and multiple coil windings wound on the respective core portions and bobbins. Each of the bobbins has a first and a second circumferential forward ends, at which a first and a second holding portions are formed. The first holding portion holds a winding-start portion and the second holding portion holds a winding-end portion. The winding-start portion is prevented from being brought into contact with the winding-end portion and main winding portion of the coil winding between the winding-start portion and the winding-end portion.Type: GrantFiled: May 9, 2013Date of Patent: June 14, 2016Assignee: DENSO CORPORATIONInventors: Tetsuo Hayakawa, Masaya Ootake, Kiyoshi Nagata