Patents by Inventor Masazumi Ishikawa
Masazumi Ishikawa 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: 10900270Abstract: A tubular housing, a motor part that is provided in the housing, and an end damper and a damper member, one of each is provided on opposing ends of the motor part in an axial direction of the motor part and absorbs vibration, wherein the motor part is supported in a floating state by the housing via the end damper and the damper member.Type: GrantFiled: July 27, 2016Date of Patent: January 26, 2021Assignee: Mitsuba CorporationInventors: Takashi Takizawa, Takayuki Ikeda, Yoshitaka Sekine, Masazumi Ishikawa, Hiroshi Matsuzaki, Arata Taniguchi
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Patent number: 10738526Abstract: A vehicle door opening/closing actuator includes a tubular housing, a motor part accommodated in the housing, a feeding apparatus accommodated in the housing and that supplies power to the motor part, and a closed-bottom tubular seal section that has a circumferential wall arranged to be interposed between an inner circumferential surface of the housing and an outer circumferential surface of the feeding apparatus, and that is arranged to cover the feeding apparatus with an entire thereof, wherein a rib extending in a circumferential direction is formed at an inner circumferential surface of the circumferential wall of the seal section, and a concave section that receives the rib is formed at the outer circumferential surface of the feeding apparatus.Type: GrantFiled: June 12, 2017Date of Patent: August 11, 2020Assignee: Mitsuba CorporationInventors: Masazumi Ishikawa, Takayuki Ikeda, Takashi Takizawa, Tsuyoshi Maruyama
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Patent number: 10544615Abstract: An actuator includes a yoke having an inner circumferential surface; an armature including a rotary shaft provided inside the yoke; a drive shaft configured to be driven to rotate when receiving a rotating force from the rotary shaft; a cylindrical first housing; a second housing relatively movable with respect to the first housing; a speed reduction gear part is disposed between the rotary shaft and the drive shaft; and a driven member is connected to the drive shaft for moving in an axial direction of the drive shaft in response to rotation of the drive shaft. The yoke is disposed within the first housing and a damper member is disposed between the first housing and the speed reduction gear part.Type: GrantFiled: July 21, 2016Date of Patent: January 28, 2020Assignee: Mitsuba CorporationInventors: Takashi Takizawa, Takayuki Ikeda, Yoshitaka Sekine, Masazumi Ishikawa
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Publication number: 20180216390Abstract: Provided is a an actuator, which includes: a tubular yoke; an armature that is provided on an inner side of the yoked in a radial direction and is provided to be rotatable with respect to the yoke; a screw shaft that receives a rotating force of a shaft of the armature and is driven to rotate; a speed reduction gear part that is provided between the shaft and the screw shaft and reduces a rotation speed of the shaft; and a nut member that is connected to the screw shaft and moves in an axial direction of the screw shaft in association with the rotation of the screw shaft An internal gear of the speed reduction gear part is provided on an inner circumferential surface of the yoke and a bearing for rotatably supporting the shaft is provided at the internal gear.Type: ApplicationFiled: July 21, 2016Publication date: August 2, 2018Inventors: Takashi Takizawa, Takayuki Ikeda, Yoshitaka Sekine, Masazumi Ishikawa
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Publication number: 20180216391Abstract: A tubular first housing, a motor part that is provided in the first housing, and an end damper and a damper member, one of which is provided on each of both ends in an axial direction of the motor part and absorbs vibration are provided, wherein the motor part is supported in a floating state by the first housing via the end damper and the damper member.Type: ApplicationFiled: July 27, 2016Publication date: August 2, 2018Inventors: Takashi Takizawa, Takayuki Ikeda, Yoshitaka Sekine, Masazumi Ishikawa, Hiroshi Matsuzaki, Arata Taniguchi
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Patent number: 9957746Abstract: Disclosed is a motor unit including: an electric motor; a motor housing (6) configured to accommodate the electric motor; and a control substrate (70) including a sensor element (72S) to detect a position of an inner rotor of the electric motor in a rotational direction. The motor housing (6) includes a substrate accommodating portion (80) configured to accommodate at least a portion of the control substrate (70); a positioning portion (81) that is formed in the substrate accommodating portion (80), and positions the control substrate (70); and a screw configured to fix a stator of the electric motor to the positioning portion (81).Type: GrantFiled: January 26, 2015Date of Patent: May 1, 2018Assignee: Mitsuba CorporationInventors: Akihiro Kaihatsu, Masazumi Ishikawa
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Publication number: 20170362876Abstract: A vehicle door opening/closing actuator includes a tubular housing, a motor part accommodated in the housing, a feeding apparatus accommodated in the housing and that supplies power to the motor part, and a closed-bottom tubular seal section that has a circumferential wall arranged to be interposed between an inner circumferential surface of the housing and an outer circumferential surface of the feeding apparatus, and that is arranged to cover the feeding apparatus with an entire thereof, wherein a rib extending in a circumferential direction is formed at an inner circumferential surface of the circumferential wall of the seal section, and a concave section that receives the rib is formed at the outer circumferential surface of the feeding apparatus.Type: ApplicationFiled: June 12, 2017Publication date: December 21, 2017Inventors: Masazumi Ishikawa, Takayuki Ikeda, Takashi Takizawa, Tsuyoshi Maruyama
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Publication number: 20160326790Abstract: Disclosed is a motor unit including: an electric motor; a motor housing (6) configured to accommodate the electric motor; and a control substrate (70) including a sensor element (72S) to detect a position of an inner rotor of the electric motor in a rotational direction. The motor housing (6) includes a substrate accommodating portion (80) configured to accommodate at least a portion of the control substrate (70); a positioning portion (81) that is formed in the substrate accommodating portion (80), and positions the control substrate (70); and a screw configured to fix a stator of the electric motor to the positioning portion (81).Type: ApplicationFiled: January 26, 2015Publication date: November 10, 2016Inventors: Akihiro KAIHATSU, Masazumi ISHIKAWA
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Patent number: 7396439Abstract: A method and apparatus for anodizing a component. The component is placed in a container having first and second seal members that seal an annular surface of the component to be anodized. The first and second seal members, the annular surface of the component, and an inner surface of the container form a reaction chamber that holds a reaction medium therein. The reaction medium is supplied to the reaction chamber through a supply passage formed in the container. The reaction medium is drained from the reaction chamber through a drain passage formed in the container.Type: GrantFiled: June 4, 2004Date of Patent: July 8, 2008Assignee: Hitachi, Ltd.Inventors: Masato Sasaki, Yuzuru Morioka, Sachiko Sugita, Masazumi Ishikawa
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Patent number: 7086727Abstract: A heat fixing apparatus has a heating unit for heating a recording medium having a substrate, a fixing layer and a surface layer so as to sublimate sublimating ink applied in advance to the surface layer for transferring the sublimated ink to the fixing layer. The heating unit includes a heating transporting mechanism for transporting the recording medium within a heating space, a heater body for heating air, and a blower mechanism for supplying hot air heated by the heater body to the recording medium being transported by the heating transporting mechanism. The apparatus further includes a flat guide member for coming into contact with the surface of the recording medium being transported by the heating transporting mechanism and a heater for heating the guide member.Type: GrantFiled: February 12, 2003Date of Patent: August 8, 2006Assignee: Noritsu Koki Co., Ltd.Inventors: Hidetoshi Nishikawa, Kazunobu Shima, Masazumi Ishikawa, Kazuo Nagaosa, Masaki Nakamoto, Masanori Inoshita, Masasuke Funase, Toshihiro Matsuoka
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Patent number: 6893122Abstract: An image forming apparatus for forming an image on a recording medium by heating the medium having ink applied to its surface layer by a heater device, thereby to fix the ink applied to the surface layer to a fixing layer of the recording medium. A heating controlling section (78) for controlling the heater device (4) includes a fixing behavior evaluating means (9) for evaluating a fixing behavior of the ink to the fixing layer and then outputting a control amount to the heating controlling section (78) for controlling the heater device (4). The fixing behavior evaluating means (9) includes such functions as a sublimation degree evaluating function for evaluating a sublimation degree of the ink in the recording medium (1), a function for evaluating surface temperature distribution of the recording medium or a transferred energy evaluating function for evaluating transferred energy received by each area of the recording medium (1).Type: GrantFiled: February 12, 2003Date of Patent: May 17, 2005Assignee: Noritsu Koki Co., Ltd.Inventors: Kazunobu Shima, Hidetoshi Nishikawa, Masazumi Ishikawa
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Patent number: 6832831Abstract: An image forming apparatus includes a printing unit having a print head for applying ink to a surface layer of a recording medium transported thereto; a loop-forming unit capable of temporarily storing the recording medium discharged from the printing unit; and a heating unit for heating the recording medium fed from the loop-forming unit for fixing the ink applied to the surface layer onto its fixing layer. The heating unit includes a preliminary heating subunit for heating the recording medium from a normal temperature level to a ink fixing temperature level, a main heating unit for heating the recording medium at the ink fixing temperature level and a slow cooling subunit for slowly cooling the recording medium to the normal temperature level.Type: GrantFiled: February 12, 2003Date of Patent: December 21, 2004Assignee: Noritsu Koki Co., Ltd.Inventors: Kazunobu Shima, Hidetoshi Nishikawa, Masazumi Ishikawa, Kiyotaka Arai, Yuji Yamamoto, Masasuke Funase, Kazuo Nagaosa, Masaki Nakamoto, Masanori Inoshita
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Patent number: 6824264Abstract: An image forming apparatus fixes, by heating, an image formed on a sheet-like recording medium thereto with sublimating ink. The apparatus includes a heating fixing unit for receiving and heating the recording medium and then discharging the heat-fixed recording medium, the heating fixing unit including a heating space for heating the recording medium and a transporting mechanism for transporting the medium in the heating space. The apparatus further includes a smoothing-out mechanism for discharging the recording medium from the heating space while smoothing out or flattening the recording medium.Type: GrantFiled: February 12, 2003Date of Patent: November 30, 2004Assignee: Noritsu Koki Co., Ltd.Inventors: Kazunobu Shima, Hidetoshi Nishikawa, Masazumi Ishikawa, Kazuo Nagaosa, Masaki Nakamoto, Masanori Inoshita, Masasuke Funase
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Patent number: 6821408Abstract: A method and apparatus for anodizing a component. The component is placed in a container having first and second seal members that seal an annular surface of the component to be anodized. The first and second seal members, the annular surface of the component, and an inner surface of the container form a reaction chamber that holds a reaction medium therein. The reaction medium is supplied to the reaction chamber through a supply passage formed in the container. The reaction medium is drained from the reaction chamber through a drain passage formed in the container.Type: GrantFiled: January 15, 2002Date of Patent: November 23, 2004Assignee: Unisia Jecs CorporationInventors: Masato Sasaki, Yuzuru Morioka, Sachiko Sugita, Masazumi Ishikawa
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Patent number: 6814851Abstract: A method and apparatus for anodizing a component. The component is placed in a container having a supply port, a drain port and a supply passage. The supply passage faced on a surface of the component to be anodized. A reaction medium is supplied from the supply port to the drain port. An electric current is supplied from an electrode provided on the drain port side of the surface. The apparatus prevents any hydrogen gas created by the electrode from recirculating to the surface of the component.Type: GrantFiled: October 4, 2002Date of Patent: November 9, 2004Assignee: Unisia Jecs CorporationInventors: Masato Sasaki, Masazumi Ishikawa, Sachiko Sugita
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Publication number: 20040216996Abstract: A method and apparatus for anodizing a component. The component is placed in a container having first and second seal members that seal an annular surface of the component to be anodized. The first and second seal members, the annular surface of the component, and an inner surface of the container form a reaction chamber that holds a reaction medium therein. The reaction medium is supplied to the reaction chamber through a supply passage formed in the container. The reaction medium is drained from the reaction chamber through a drain passage formed in the container.Type: ApplicationFiled: June 4, 2004Publication date: November 4, 2004Applicant: UNISIA JECS CORPORATIONInventors: Masato Sasaki, Yuzuru Morioka, Sachiko Sugita, Masazumi Ishikawa
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Publication number: 20040127294Abstract: A power transmission includes a first rotating member having one or more first concave portions formed on an inner circumferential surface of the first rotating member. The power transmission also includes a second rotating member having one or more second concave portions formed on an outer circumferential surface of the second rotating member. Moreover, the power transmission includes a holding member positioned within the second concave portion, and a connecting member slidably held by the holding member. Specifically, when an amount of torque transmitted to the first rotating member is less than or equal to a predetermined amount of torque a particular portion of the connecting member is in contact with a wall of the first concave portion to prevent a rotation of the first rotating member with respect to the second rotating member.Type: ApplicationFiled: December 16, 2003Publication date: July 1, 2004Inventors: Takahiro Ohta, Masazumi Ishikawa, Hideyuki Gonda
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Publication number: 20030169322Abstract: An image forming apparatus fixes, by heating, an image formed on a sheet-like recording medium thereto with sublimating ink. The apparatus includes a heating fixing unit for receiving and heating the recording medium and then discharging the heat-fixed recording medium, the heating fixing unit including a heating space for heating the recording medium and a transporting mechanism for transporting the medium in the heating space. The apparatus further includes a smoothing-out mechanism for discharging the recording medium from the heating space while smoothing out or flattening the recording medium.Type: ApplicationFiled: February 12, 2003Publication date: September 11, 2003Inventors: Kazunobu Shima, Hidetoshi Nishikawa, Masazumi Ishikawa, Kazuo Nagaosa, Masaki Nakamoto, Masanori Inoshita, Masasuke Funase
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Publication number: 20030164958Abstract: An image forming apparatus includes a print head (2) controllably driven according to print data; a heater device (HU) for applying thermal energy to a recording medium (1) in order to fix ink applied on its surface layer by the print head onto its fixing layer (11); and a controller (7) for producing the print data from image data. The controller (7) includes a deformation compensating section (9) for compensating for displacement between a target image and a fixed image due to size change in the vertical and/or lateral direction of the recording medium occurring in association with application of the thermal energy thereto.Type: ApplicationFiled: February 12, 2003Publication date: September 4, 2003Inventors: Kazunobu Shima, Hidetoshi Nishikawa, Masazumi Ishikawa
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Publication number: 20030161552Abstract: An image forming apparatus for forming an image on a recording medium by heating the medium having ink applied to its surface layer by a heater device, thereby to fix the ink applied to the surface layer to a fixing layer of the recording medium. A heating controlling section (78) for controlling the heater device (4) includes a fixing behavior evaluating means (9) for evaluating a fixing behavior of the ink to the fixing layer and then outputting a control amount to the heating controlling section (78) for controlling the heater device (4). The fixing behavior evaluating means (9) includes such functions as a sublimation degree evaluating function for evaluating a sublimation degree of the ink in the recording medium (1), a function for evaluating surface temperature distribution of the recording medium or a transferred energy evaluating function for evaluating transferred energy received by each area of the recording medium (1).Type: ApplicationFiled: February 12, 2003Publication date: August 28, 2003Inventors: Kazunobu Shima, Hidetoshi Nishikawa, Masazumi Ishikawa