Patents by Inventor Yoshio Naka
Yoshio Naka 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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Publication number: 20220334341Abstract: It is an object of the present disclosure to provide a lens with which lens distortion attributable to an external factor can be suppressed and the optical axis of the lens can thereby be accurately adjusted, as well as a lens support structure, a lens barrel provided with this, and a camera. A lens 150 comprises a lens main body 151 that transmits light, and a distortion absorbing portion 151a that is provided to the outer peripheral part of the lens main body 151 and deforms more readily than the lens main body 151.Type: ApplicationFiled: December 27, 2021Publication date: October 20, 2022Inventor: Yoshio NAKA
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Patent number: 10838022Abstract: A rotational manipulation detector includes: a magnetic material in the shape of a ring and including, disposed alternately in the circumferential direction of the magnetic material, first magnetic portions each having a first cross-sectional area in the circumferential direction and second magnetic portions each having, in the circumferential direction, a second cross-sectional area different from the first cross-sectional area; a first magnet disposed opposite to the magnetic material; and a first Hall element and a second Hall element which are disposed opposite to the magnetic material and detect a change in a magnetic field which occurs when the magnetic material is rotated. The first magnet, the first Hall element, and the second Hall element are disposed side by side along the circumferential direction of the magnetic material.Type: GrantFiled: August 26, 2018Date of Patent: November 17, 2020Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventor: Yoshio Naka
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Publication number: 20190072619Abstract: A rotational manipulation detector includes: a magnetic material in the shape of a ring and including, disposed alternately in the circumferential direction of the magnetic material, first magnetic portions each having a first cross-sectional area in the circumferential direction and second magnetic portions each having, in the circumferential direction, a second cross-sectional area different from the first cross-sectional area; a first magnet disposed opposite to the magnetic material; and a first hole element and a second hole element which are disposed opposite to the magnetic material and detect a change in a magnetic field which occurs when the magnetic material is rotated. The first magnet, the first hole element, and the second hole element are disposed side by side along the circumferential direction of the magnetic material.Type: ApplicationFiled: August 26, 2018Publication date: March 7, 2019Inventor: Yoshio NAKA
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Patent number: 8184023Abstract: A rotary input device includes a circular ring shaped operation body, a magnetic first guide plate fixed to the bottom of the operation body, movable magnets disposed on the bottom of a first flat plane of the first guide plate concentrically with the operation body, a base for rotatably supporting the operation body from beneath, a detection element for detecting a change in magnetic field from the movable contacts due to rotating operation of the operation body without making contact, and a magnetic second guide plate fixed to the base having a plurality of second flat planes opposite to the position of the movable magnets so as to be opposite to each one of the movable magnets. The movable magnets face to or depart from each one of the second flat planes of the second guide plate depending on the rotation of the operation body.Type: GrantFiled: September 3, 2008Date of Patent: May 22, 2012Assignee: Panasonic CorporationInventors: Yoshio Naka, Tamotsu Yamamoto, Takumi Nishimoto
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Patent number: 8139033Abstract: An input device includes a ball having a magnetic body therein. The magnetic body includes projections radially extending from the core toward the outer periphery of the ball. The device also includes a ring magnet and magnet detection elements surrounded by a lower area of the ball so as to be opposite thereto. The structure allows the input device to be protected from dust and dirt during long-term use so as to maintain a good tactile feel in a simple structure. Because, the input device has no components such as rollers that are in contact with the ball.Type: GrantFiled: October 22, 2008Date of Patent: March 20, 2012Assignee: Panasonic CorporationInventors: Tamotsu Yamamoto, Shinichi Takasaki, Yoshio Naka
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Publication number: 20090102795Abstract: An input device includes a ball having a magnetic body therein. The magnetic body includes projections radially extending from the core toward the outer periphery of the ball. The device also includes a ring magnet and magnet detection elements surrounded by a lower area of the ball so as to be opposite thereto. The structure allows the input device to be protected from dust and dirt during long-term use so as to maintain a good tactile feel in a simple structure. Because, the input device has no components such as rollers that are in contact with the ball.Type: ApplicationFiled: October 22, 2008Publication date: April 23, 2009Applicant: PANASONIC CORPORATIONInventors: Tamotsu Yamamoto, Shinichi Takasaki, Yoshio Naka
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Publication number: 20090079595Abstract: Including an operation body of circular ring shape, a first guide plate of magnetic body fixed to the downside of the operation body, a plurality of movable magnets disposed on the downside of a first flat plane of the first guide plate concentrically with the operation body, a base for rotatably supporting the operation body from beneath, a detection element for detecting a change in magnetic field from the movable contacts due to rotating operation of the operation body without making contact, and a second guide plate of a magnetic body fixed to the base having a plurality of second flat planes opposite to the disposing position of the movable magnets so as to be opposite to each one of the movable magnets, the plurality of movable magnets face to or depart from each one of the second flat planes of the second guide plate depending on the rotation of the operation body. Hence, a rotary operation type input device having a clear click feel can be obtained at low cost and in thin type.Type: ApplicationFiled: September 3, 2008Publication date: March 26, 2009Inventors: Yoshio NAKA, Tamotsu YAMAMOTO, Takumi NISHIMOTO
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Patent number: 7323959Abstract: A trackball device of the present invention includes an operating ball, multiple rollers which rotate by contacting the ball while it is rotated, multipole permanent magnets which co-rotate with these rollers, and a reed switch disposed in a position where it turns on and off as a result of changes in magnetic flux caused by the rotation of the permanent magnets so as to provide tactile feedback when the ball is rotated. The trackball device is configured to make an attractive force generated between the reed switch and permanent magnet affect the rotation of the rollers.Type: GrantFiled: March 15, 2006Date of Patent: January 29, 2008Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yoshio Naka, Tamotsu Yamamoto
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Publication number: 20060208840Abstract: A trackball device of the present invention includes an operating ball, multiple rollers which rotate by contacting the ball while it is rotated, multipole permanent magnets which co-rotate with these rollers, and a reed switch disposed in a position where it turns on and off as a result of changes in magnetic flux caused by the rotation of the permanent magnets so as to provide tactile feedback when the ball is rotated. The trackball device is configured to make an attractive force generated between the reed switch and permanent magnet affect the rotation of the rollers.Type: ApplicationFiled: March 15, 2006Publication date: September 21, 2006Inventors: Yoshio Naka, Tamotsu Yamamoto
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Patent number: 6609289Abstract: A stator core has a plurality of slots. Insulating members are formed into a cylindrical shape and are inserted into the slots. Axial ends of the insulating members are expanded respectively and deformation marks thinner than the other portion are formed respectively. Then, the insulating members are moved toward the expanded ends to position the deformation marks in the out of the slots. After that, the conductors are inserted into the slots from the expanded side of the insulating members. Therefore, insulation failure at the portions of the deformation marks is prevented.Type: GrantFiled: March 18, 2002Date of Patent: August 26, 2003Assignee: Denso CorporationInventors: Yoshio Naka, Kazuki Maesoba, Kazutaka Maeda, Masaru Sugiyama
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Patent number: 6546617Abstract: A method of peeling off a coating of an elliptical cross sectional insulated conductive wire has a groove forming process of forming a groove nearly perpendicular to a longitudinal direction of the insulated conductive wire at given positions within a peeling region thereof, a first peeling process of peeling off the coating by moving a pair of first cutting edges in a longitudinal direction of the insulated conductive wire and perpendicularly to a longer diameter direction of the cross section thereof toward the groove from opposite ends of the peeling region, and a second peeling process of peeling off the coating at the peeling region by moving a pair of second cutting edges in a direction perpendicular to the longitudinal direction and in parallel with the longer diameter direction of the cross section thereof. As a result, the coating all around the outer circumference of the insulated conductive wire at the peeling region may be completely peeled off.Type: GrantFiled: March 31, 2000Date of Patent: April 15, 2003Assignee: Denso CorporationInventors: Mitsuyuki Hayashi, Katsumi Shizu, Masaru Sugiyama, Yoshio Naka, Kazuki Maesoba
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Publication number: 20020089250Abstract: A stator core has a plurality of slots. Insulating members are formed into a cylindrical shape and are inserted into the slots. Axial ends of the insulating members are expanded respectively and deformation marks thinner than the other portion are formed respectively. Then, the insulating members are moved toward the expanded ends to position the deformation marks in the out of the slots. After that, the conductors are inserted into the slots from the expanded side of the insulating members. Therefore, insulation failure at the portions of the deformation marks is prevented.Type: ApplicationFiled: March 18, 2002Publication date: July 11, 2002Applicant: Denso CorporationInventors: Yoshio Naka, Kazuki Maesoba, Kazutaka Maeda, Masaru Sugiyama
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Patent number: 6400056Abstract: A stator core has a plurality of slots. Insulating members are formed into a cylindrical shape and are inserted into the slots. Axial ends of the insulating members are expanded respectively and deformation marks thinner than the other portion are formed respectively. Then, the insulating members are moved toward the expanded ends to position the deformation marks in the out of the slots. After that, the conductors are inserted into the slots from the expanded side of the insulating members. Therefore, insulation failure at the portions of the deformation marks is prevented.Type: GrantFiled: April 13, 2000Date of Patent: June 4, 2002Assignee: Denso CorporationInventors: Yoshio Naka, Kazuki Maesoba, Kazutaka Maeda, Masaru Sugiyama
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Patent number: 6339871Abstract: A method of manufacturing a stator of a rotary electric machine is comprised of the following steps: providing a plurality of U-shaped basic conductor segments and a plurality of U-shaped connection conductor segments; forming the U-turn portions and straight portions into crossover portions, inserting the pair of straight portions of the basic and connection conductor segments into prescribed two slots of a stator core from one end thereof to extend from the other end, bending one of the pair of straight portions in the direction opposite to the other of the pair of extended straight portions so that the edges of straight portions extending from the prescribed slots can adjoin each other, connecting the adjoining edges to form a plurality of phase coils, and removing the U-turn portion of the connection conductor segments to form terminals of the phase coils.Type: GrantFiled: March 31, 2000Date of Patent: January 22, 2002Assignee: Denso CorporationInventors: Kazuki Maesoba, Yoshio Naka, Masaru Sugiyama
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Patent number: 6314780Abstract: A method of manufacturing a U-shaped conductor segment which has a U-shaped head and a pair of legs includes setting a straight conductor wire of a prescribed length on the outer peripheries of a pair of parallel rollers, and pushing a bender against one side of the conductor wire opposite the rollers between the pair of rollers so that the conductor wire can be bent to allow the bender to pass between the pair of rollers.Type: GrantFiled: July 28, 2000Date of Patent: November 13, 2001Assignee: Denso CorporationInventors: Yoshio Naka, Kazuki Maesoba, Masaru Sugiyama, Youichi Kamakura
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Patent number: 6147430Abstract: In a stator of an ac generator for vehicle, a plurality of insulators are disposed in the slots of the stator to insulate the stator winding from the stator core. Each of the insulators has a smooth edge at one end and a stopper portion at the other end. The stopper portions project from an axial end of the stator core from which conductor segments of the stator winding are inserted. The conductor segments can be inserted into the slots with the smooth edges being at the head and can be easily positioned in the slots by the stopper.Type: GrantFiled: May 19, 1999Date of Patent: November 14, 2000Assignee: Denso CorporationInventors: Shin Kusase, Atsushi Umeda, Tsutomu Shiga, Hiroshi Ishida, Yoshio Naka, Shinichi Matsubara