Patents by Inventor Takehito Mizunuma
Takehito Mizunuma has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9163956Abstract: In a rotation angle detecting device, a signal from a first magnetism detecting element is outputted to a signal output part of a first IC package. A first signal output terminal outputs the signal from the first magnetism detecting element to outside. A signal from a second magnetism detecting element is outputted to a signal output part of a second IC package. A second signal output terminal outputs the signal from the second magnetism detecting element to outside. At least one of a power supply terminal and a ground terminal is located between the first and second signal output terminals. A rotary drive unit includes the device, a motor that rotates a detection object, and a motor power source wire. The ground terminal and a motor power source terminal are adjacent to each other.Type: GrantFiled: September 13, 2013Date of Patent: October 20, 2015Assignee: DENSO CORPORATIONInventors: Takehito Mizunuma, Tomoyuki Takiguchi, Akitoshi Mizutani, Yoshiyuki Kono
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Patent number: 9103647Abstract: A position detection device includes a first component provided by molding of a first mold resin with a first hall IC, a second component provided by molding of a second mold resin with a second hall IC, a terminal connected to a first wiring of the first component and to a second wiring of the second component, and a third mold resin molded to hold and protect the first component, the second component and the terminal. The third mold resin fixing the first component and the second component to each other. Accordingly, the position detection device can be provided, which includes a component usable commonly for a variety of position detection devices which are different in the number of hall ICs.Type: GrantFiled: August 20, 2013Date of Patent: August 11, 2015Assignee: DENSO CORPORATIONInventors: Tomoyuki Takiguchi, Takehito Mizunuma, Yoshiyuki Kono
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Patent number: 9086304Abstract: A terminal-supporting apparatus includes a resin part made of non-conductive resin material and a plurality of conductive terminals including parallel terminal portions which are directly supported by the resin part. The parallel terminal portions are electrically connected to each other through an electric element. The resin part supporting the parallel terminal portions is made of non-conductive resin material mixed with non-conductive reinforced fibers of which thermal expansion coefficient is smaller than that of the non-conductive resin material. An extending direction of the parallel terminal portion is referred to as a longitudinal direction and a direction perpendicular to the longitudinal direction is referred to as a perpendicular direction. The non-conductive reinforced fibers have a fiber direction which is substantially the same as the perpendicular direction.Type: GrantFiled: September 14, 2012Date of Patent: July 21, 2015Assignee: DENSO CORPORATIONInventors: Takehito Mizunuma, Takamitsu Kubota, Toru Shimizu, Yoshiyuki Kono
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Publication number: 20150177025Abstract: A position detecting device includes a first sensor portion having a first mold resin object molded for a first magnetic sensor and a first wiring and a second sensor portion having a second mold resin object molded for a second magnetic sensor and a second wiring. The first sensor portion and the second sensor portion have a protrusion part defined between the first magnetic sensor of the first sensor portion and the second magnetic sensor of the second sensor portion to provide a clearance between the first magnetic sensor and the second magnetic sensor.Type: ApplicationFiled: December 17, 2014Publication date: June 25, 2015Inventors: Takehito MIZUNUMA, Tomoyuki TAKIGUCHI, Takamitsu KUBOTA, Yoshiyuki KONO
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Publication number: 20150061657Abstract: A position detector apparatus includes a detector part, wiring, a resin part, a resin body, a terminal, and a lead frame. The resin part has a thickness at a wiring side portion of the detector part that is greater than a thickness on a side opposite to the wiring side portion. Therefore, when injection-molding the resin part, due to a thickness change of the resin part, the detector part is pressed against a metal mold and a position of the detecting part is fixed. Further, the resin body has a thick-resin portion and a thin-resin portion. The thickness of the thin-resin portion allows a predetermined amount of dislocation of the detector part. Therefore, if the detector part is exposed, water is prevented from intruding the lead frame and the terminal.Type: ApplicationFiled: August 27, 2014Publication date: March 5, 2015Inventors: Tomoyuki TAKIGUCHI, Ninh Duc HOANG, Yoshiyuki KONO, Takehito MIZUNUMA
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Publication number: 20140366823Abstract: A main locking mechanism locks a phase at a main locking phase, at which an intake valve is closed at timing later than a bottom dead center, by inserting a main locking member into a main locking hole. A sub locking mechanism locks a phase at a sub locking phase advanced more than the main locking phase by inserting a sub locking member into a sub locking hole. A movable body disposed in the main locking hole reciprocates between an open position and a blocking position of the main locking hole. During a warm start of an engine, a driving source maintains the movable body at the open position at which the inserting of the main locking member into the main locking hole is maintained. In contrast, during a cold start of the engine, the driving source drives the movable body to the blocking position at which the main locking member is removed from the main locking hole.Type: ApplicationFiled: June 10, 2014Publication date: December 18, 2014Inventors: Hirohisa NODA, Tetsurou MITSUTANI, Dai OSADA, Takehito MIZUNUMA, Takehiro TANAKA, Shuhei OE, Yuusuke YASUKI
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Publication number: 20140306696Abstract: A magnetism sensing element is provided to be rotatable relative to permanent magnets and outputs a magnetic force detection value, which corresponds to a perpendicular component of magnetic flux. A Hall IC calculates and outputs an output voltage, which corresponds to a relative rotational angle between the permanent magnets and the magnetism sensing element, based on the magnetic force detection value outputted by the magnetism sensing element. The Hall IC calculates the output voltage as V2=kĂ—arcsin(V1/(VM+?))+Voffset, in which V1, V2, VM, k, ? and Voffset indicate the magnetic force detection value, the output voltage, a maximum value of the magnetic force detection value, a gain, a predetermined value and a predetermined offset value.Type: ApplicationFiled: February 26, 2014Publication date: October 16, 2014Applicant: DENSO CORPORATIONInventors: Takehito MIZUNUMA, Tomoyuki TAKIGUCHI, Takamitsu KUBOTA, Yoshiyuki KONO
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Publication number: 20140148066Abstract: A terminal arrangement device electrically connects an electric device, which is received in a housing, to an external device, and includes a first connecting terminal fixed to the housing. The first connecting terminal has a first supporting portion and a second supporting portion which are elastically deformable such that an output terminal of the electric device is supported between the first supporting portion and the second supporting portion. The first supporting portion has a flexural rigidity which is different from a flexural rigidity of the second supporting portion.Type: ApplicationFiled: November 22, 2013Publication date: May 29, 2014Applicant: DENSO CORPORATIONInventors: Hirofumi HAGIO, Takehito MIZUNUMA, Takamitsu KUBOTA
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Patent number: 8710832Abstract: A rotation angle sensor includes a housing, a detected object, a magnetism generation section, a housing cover, a circuit substrate, a sensing IC, and a resin body. The sensing IC includes a magnetism detection element, a molded body, and leads. The magnetism detection element outputs a signal in accordance with a change in a magnetic field due to a rotation of the detected object. The molded body covers the magnetism detection element. One end portion of each lead is electrically coupled with the magnetism detection element and the other end portion of each lead protrudes from the molded body and is electrically coupled with the circuit substrate. The resin body seals a portion of the molded body located between the magnetism detection element and the housing cover, the leads, and the circuit substrate.Type: GrantFiled: April 11, 2012Date of Patent: April 29, 2014Assignee: Denso CorporationInventors: Satoru Hiramoto, Yoshiyuki Kono, Akitoshi Mizutani, Takamitsu Kubota, Atsushi Tanaka, Takehito Mizunuma
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Publication number: 20140111193Abstract: In a rotation angle detecting device, a signal from a first magnetism detecting element is outputted to a signal output part of a first IC package. A first signal output terminal outputs the signal from the first magnetism detecting element to outside. A signal from a second magnetism detecting element is outputted to a signal output part of a second IC package. A second signal output terminal outputs the signal from the second magnetism detecting element to outside. At least one of a power supply terminal and a ground terminal is located between the first and second signal output terminals. A rotary drive unit includes the device, a motor that rotates a detection object, and a motor power source wire. The ground terminal and a motor power source terminal are adjacent to each other.Type: ApplicationFiled: September 13, 2013Publication date: April 24, 2014Applicant: DENSO CORPORATIONInventors: Takehito MIZUNUMA, Tomoyuki TAKIGUCHI, Akitoshi MIZUTANI, Yoshiyuki KONO
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Publication number: 20140077794Abstract: A position detection device includes a first component provided by molding of a first mold resin with a first hall IC, a second component provided by molding of a second mold resin with a second hall IC, a terminal connected to a first wiring of the first component and to a second wiring of the second component, and a third mold resin molded to hold and protect the first component, the second component and the terminal. The third mold resin fixing the first component and the second component to each other. Accordingly, the position detection device can be provided, which includes a component usable commonly for a variety of position detection devices which are different in the number of hall ICs.Type: ApplicationFiled: August 20, 2013Publication date: March 20, 2014Applicant: DENSO CORPORATIONInventors: Tomoyuki TAKIGUCHI, Takehito MIZUNUMA, Yoshiyuki KONO
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Publication number: 20130078852Abstract: A terminal-supporting apparatus includes a resin part made of non-conductive resin material and a plurality of conductive terminals including parallel terminal portions which are directly supported by the resin part. The parallel terminal portions are electrically connected to each other through an electric element. The resin part supporting the parallel terminal portions is made of non-conductive resin material mixed with non-conductive reinforced fibers of which thermal expansion coefficient is smaller than that of the non-conductive resin material. An extending direction of the parallel terminal portion is referred to as a longitudinal direction and a direction perpendicular to the longitudinal direction is referred to as a perpendicular direction. The non-conductive reinforced fibers have a fiber direction which is substantially the same as the perpendicular direction.Type: ApplicationFiled: September 14, 2012Publication date: March 28, 2013Applicant: DENSO CORPORATIONInventors: Takehito MIZUNUMA, Takamitsu KUBOTA, Toru SHIMIZU, Yoshiyuki KONO
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Publication number: 20120268111Abstract: A rotation angle sensor includes a housing, a detected object, a magnetism generation section, a housing cover, a circuit substrate, a sensing IC, and a resin body. The sensing IC includes a magnetism detection element, a molded body, and leads. The magnetism detection element outputs a signal in accordance with a change in a magnetic field due to a rotation of the detected object. The molded body covers the magnetism detection element. One end portion of each lead is electrically coupled with the magnetism detection element and the other end portion of each lead protrudes from the molded body and is electrically coupled with the circuit substrate. The resin body seals a portion of the molded body located between the magnetism detection element and the housing cover, the leads, and the circuit substrate.Type: ApplicationFiled: April 11, 2012Publication date: October 25, 2012Applicant: DENSO CORPORATIONInventors: Satoru Hiramoto, Yoshiyuki Kono, Akitoshi Mizutani, Takamitsu Kubota, Atsushi Tanaka, Takehito Mizunuma