Patents by Inventor Toshiaki Mizuno

Toshiaki Mizuno 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).

  • Publication number: 20190143849
    Abstract: A seat rotating device for a vehicle includes: a plate used to support a seat; and a pair of guide rails arranged side by side in a vehicle width direction and supporting the plate. The guide rails each have a fixed rail and a sliding member that supports the plate and is slidable along the fixed rail. The plate includes guides that guide each of the sliding members. The guides are configured such that the plate rotates while causing the sliding members to move in directions opposite to each other or the plate rotates based on movement of the sliding members in directions opposite to each other.
    Type: Application
    Filed: November 13, 2018
    Publication date: May 16, 2019
    Applicant: SHIROKI CORPORATION
    Inventors: Yuta MURAKAMI, Toshiaki NAGATA, Ryosuke MIZUNO, Katsuya NOZUE
  • Patent number: 8650978
    Abstract: There is provided a linear actuator provided with a dust-proof mechanism capable of preventing dust-proof belts from being deformed, improving a sealing performance between the dust-proof belts and a housing member, and achieving high dust-proof performance irrespective of a size of the linear actuator.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: February 18, 2014
    Assignee: THK Co., Ltd.
    Inventors: Toshiyuki Aso, Toshiya Tanaka, Toshiaki Mizuno, Norinobu Ogawa, Minoru Tsukada, Yukitoshi Kobayashi
  • Publication number: 20130147286
    Abstract: There is provided a linear actuator provided with a dust-proof mechanism capable of preventing dust-proof belts from being deformed, improving a sealing performance between the dust-proof belts and a housing member, and achieving high dust-proof performance irrespective of a size of the linear actuator.
    Type: Application
    Filed: December 7, 2010
    Publication date: June 13, 2013
    Applicant: THK CO., LTD.
    Inventors: Toshiyuki Aso, Toshiya Tanaka, Toshiaki Mizuno, Norinobu Ogawa, Minoru Tsukada, Yukitoshi Kobayashi
  • Patent number: 8272286
    Abstract: A linear actuator with a dustproof mechanism provides reliable dustproof capability over the entire stroke of the actuator. A linear actuator 100 with a dustproof mechanism includes a ball screw, a movable stage 4 including a ball screw nut that engages the ball screw, the movable stage capable of making linear reciprocating motion in the axial direction of the ball screw in response to rotary motion of the ball screw, a housing member 2 disposed to cover at least the ball screw, openings 27, 28 formed in the housing member 2 along the path along which the movable stage 4 travels, and dustproof belts 29, 30 disposed inside the housing member 2 to block the openings 27, 28. The linear actuator 100 with a dustproof mechanism further includes end plate covers 105a, 105b that cover both ends of the housing member 2 and hence has high dustproof performance.
    Type: Grant
    Filed: August 12, 2008
    Date of Patent: September 25, 2012
    Assignee: THK Co., Ltd.
    Inventors: Toshiyuki Aso, Toshiya Tanaka, Norinobu Ogawa, Toshiaki Mizuno, Minoru Tsukada, Yukitoshi Kobayashi
  • Patent number: 7884928
    Abstract: A cup attaching apparatus for attaching a cup as a processing jig to an eyeglass lens including an illumination optical system including an illumination light source arranged to illuminate a side of the front surface of the lens by light from the light source; an imaging optical system including an imaging device and a retroreflection member placed on an opposite side from the light source with respect to the lens; an image processing device adapted to process an image signal from the imaging device to detect at least one of a mark point provided on a unifocal lens, a small lens portion of a bifocal lens, and a progressive mark provided on a progressive focal lens and obtain a position of the detected one; and an arithmetic control device adapted to determine an attaching position of the cup based on the position obtained by the image processing device.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: February 8, 2011
    Assignee: Nidek Co., Ltd.
    Inventors: Toshiaki Mizuno, Yoshinori Matsuyama, Toshiro Matsumoto, Kenji Suzuki, Satoshi Imaizumi
  • Publication number: 20100206102
    Abstract: A linear actuator with a dustproof mechanism provides reliable dustproof capability over the entire stroke of the actuator. A linear actuator 100 with a dustproof mechanism includes a ball screw, a movable stage 4 including a ball screw nut that engages the ball screw, the movable stage capable of making linear reciprocating motion in the axial direction of the ball screw in response to rotary motion of the ball screw, a housing member 2 disposed to cover at least the ball screw, openings 27, 28 formed in the housing member 2 along the path along which the movable stage 4 travels, and dustproof belts 29, 30 disposed inside the housing member 2 to block the openings 27, 28. The linear actuator 100 with a dustproof mechanism further includes end plate covers 105a, 105b that cover both ends of the housing member 2 and hence has high dustproof performance.
    Type: Application
    Filed: August 12, 2008
    Publication date: August 19, 2010
    Applicant: THK CO., LTD.
    Inventors: Toshiyuki Aso, Toshiya Tanaka, Norinobu Ogawa, Toshiaki Mizuno, Minoru Tsukada, Yukitoshi Kobayashi
  • Publication number: 20080297776
    Abstract: A cup attaching apparatus for attaching a cup as a processing jig to an eyeglass lens, comprises: an illumination optical system comprising an illumination light source and arranged to illuminate the lens from a side of a front surface of the lens by illumination light from the light source; an imaging optical system comprising an imaging device and a retroreflection member placed on an opposite side from the light source with respect to the lens, the imaging optical system being adapted such that the retroreflection member returns the illumination light passing through the lens back to its incoming direction, and the imaging device receives the returned illumination light, and the imaging optical system being adjusted to focus on a point near a surface of the lens; an image processing device adapted to process an image signal from -the- imaging device to detect at least one of a mark point provided on a unifocal lens, a small lens portion of a bifocal lens, and a progressive mark provided on a progressive fo
    Type: Application
    Filed: May 15, 2008
    Publication date: December 4, 2008
    Applicant: NIDEK CO., LTD.
    Inventors: Toshiaki Mizuno, Yoshinori Matsuyama, Toshiro Matsumoto, Kenji Suzuki, Satoshi Imaizumi
  • Patent number: 7255634
    Abstract: A draining device for removing processing water attached to a lens includes: a first lens holding shaft to which a cup attached to a refractive surface of the lens as a processing jig can be fitted; and a rotating unit which rotates the first lens holding shaft to remove the water by centrifugal force.
    Type: Grant
    Filed: August 3, 2006
    Date of Patent: August 14, 2007
    Assignee: Nidek Co., Ltd.
    Inventors: Toshiaki Mizuno, Yoshinori Matsuyama, Hirokatsu Obayashi
  • Patent number: 7169013
    Abstract: An eyeglass lens processing apparatus includes: a lens rotating unit having lens chucking shafts which hold an eyeglass lens, and a first motor which rotates the chucking shafts; an axis-to-axis distance changing unit having a second motor which changes an axis-to-axis distance between a center axis of rotation of a processing tool which processes a periphery of the lens and a center axis of rotation of the chucking shafts; a torque detector which directly or indirectly detects torque transmitted to the chucking shafts; a torque level setting unit which variably sets an allowable torque level; and a driving controller which controls at least one of driving of the first motor and driving of the second motor to adjust at least one of a rotational speed of the chucking shafts and a processing pressure of the lens so that the torque falls below the allowable torque level.
    Type: Grant
    Filed: April 28, 2006
    Date of Patent: January 30, 2007
    Assignee: Nidek Co., Ltd.
    Inventors: Toshiaki Mizuno, Kyoji Takeichi
  • Patent number: 7150672
    Abstract: A cup attaching apparatus for attaching a cup, used during processing of an eye glass lens, to the lens, the apparatus includes: a placing portion onto which the lens is placed; a holding portion for detachably holding the cup; a supporting portion for supporting the holding portion; a moving mechanism for moving the supporting portion in an optical axis direction of the placed lens; and a pressure regulating mechanism for preventing a cup attaching force from exceeding a predetermined pressure.
    Type: Grant
    Filed: March 25, 2002
    Date of Patent: December 19, 2006
    Assignee: Nidek Co., Ltd.
    Inventor: Toshiaki Mizuno
  • Publication number: 20060270324
    Abstract: A draining device for removing processing water attached to a lens includes: a first lens holding shaft to which a cup attached to a refractive surface of the lens as a processing jig can be fitted; and a rotating unit which rotates the first lens holding shaft to remove the water by centrifugal force.
    Type: Application
    Filed: August 3, 2006
    Publication date: November 30, 2006
    Inventors: Toshiaki Mizuno, Yoshinori Matsuyama, Hirokatsu Obayashi
  • Publication number: 20060264154
    Abstract: An eyeglass lens processing apparatus includes: a lens rotating unit having lens chucking shafts which hold an eyeglass lens, and a first motor which rotates the chucking shafts; an axis-to-axis distance changing unit having a second motor which changes an axis-to-axis distance between a center axis of rotation of a processing tool which processes a periphery of the lens and a center axis of rotation of the chucking shafts; a torque detector which directly or indirectly detects torque transmitted to the chucking shafts; a torque level setting unit which variably sets an allowable torque level; and a driving controller which controls at least one of driving of the first motor and driving of the second motor to adjust at least one of a rotational speed of the chucking shafts and a processing pressure of the lens so that the torque falls below the allowable torque level.
    Type: Application
    Filed: April 28, 2006
    Publication date: November 23, 2006
    Inventors: Toshiaki Mizuno, Kyoji Takeichi
  • Patent number: 7108590
    Abstract: A draining device for removing processing water attached to a lens includes: a first lens holding shaft to which a cup attached to a refractive surface of the lens as a processing jig can be fitted; and a rotating unit which rotates the first lens holding shaft to remove the water by centrifugal force.
    Type: Grant
    Filed: June 26, 2003
    Date of Patent: September 19, 2006
    Assignee: Nidek Co., Ltd.
    Inventors: Toshiaki Mizuno, Yoshinori Matsuyama, Hirokatsu Obayashi
  • Patent number: 7007513
    Abstract: A method of manufacturing glass parts for connection of glass fibers is provided, which can improve the accuracy of the cross-sectional size of a through hole in the glass part. A mother glass having a similar cross section to a desired cross section of a glass part having a through hole is prepared, and the prepared mother glass is drawn while it is heated. The mother glass is made of a glass having a maximum devitrification speed of 100 ?m or less per minute.
    Type: Grant
    Filed: November 4, 2002
    Date of Patent: March 7, 2006
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Toshiaki Mizuno, Katsuya Kamisaku, Masahiro Morishita
  • Patent number: 7003983
    Abstract: A method of manufacturing an optical glass element for which flatness and smoothness of the surfaces of the optical glass element can be improved while securing the similarity of the cross-sectional shape of the optical glass element to that of the mother glass, and for which continuous production involving few steps can be carried out, and an optical glass element manufactured using the method. A mother glass is prepared, which has a cross-sectional shape substantially similar to a desired cross-sectional shape of the optical glass element, and the mother glass is drawn while heating to a predetermined temperature such that the mother glass has a viscosity of 105 to 109 poise.
    Type: Grant
    Filed: August 28, 2003
    Date of Patent: February 28, 2006
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Masahiro Morishita, Katsuya Kamisaku, Toshiaki Mizuno
  • Publication number: 20050195360
    Abstract: An ophthalmic apparatus for examining an eye of a patient, comprises: a light projecting optical system for projecting examination light onto the eye, the optical system including: a light source; and a projection shape forming device which is electrically controlled to change a reflecting area of a reflecting surface or a transmitting area of a transmitting surface and is arranged to reflect or transmit the examination light emitted from the light source while forming a projection shape of the examination light into a desired shape so that the examination light of the desired shape is projected onto the eye; and a selection unit for selecting the projection shape of the examination light; and a control part which drivingly controls the forming device based on the selected projection shape.
    Type: Application
    Filed: February 25, 2005
    Publication date: September 8, 2005
    Applicant: NIDEK CO., LTD.
    Inventors: Junichi Akita, Naoyuki Kondoh, Toshifumi Sumiya, Susumu Oshima, Akihiro Fujishiro, Toshiaki Mizuno
  • Patent number: 6913510
    Abstract: A lens processing system (1) includes a lens stocking device (400a; 400b) capable of stocking a plurality of lenses (LE); and a lens grinding device (100a; 100b); and a lens conveying device (200) which conveys one of the plurality of lenses between the lens stocking device and the lens grinding device.
    Type: Grant
    Filed: June 26, 2003
    Date of Patent: July 5, 2005
    Assignee: Nidek Co., Ltd.
    Inventors: Toshiaki Mizuno, Yoshinori Matsuyama, Hirokatsu Obayashi
  • Patent number: 6881132
    Abstract: A grinding water tank unit which enables reuse of grinding water that has been used for processing an eyeglass lens, includes: a tank in which the grinding water is stored; a filter, disposed in the tank, for filtering the grinding water to be separate from processing debris, the filter having a sealed hollow portion; a first water suction pump; and a first water suction passage which connects the hollow portion to the first pump, and through which the grinding water filtered by the filter is sucked by suction of the first pump.
    Type: Grant
    Filed: August 21, 2002
    Date of Patent: April 19, 2005
    Assignee: Nidek Co., Ltd.
    Inventor: Toshiaki Mizuno
  • Patent number: 6798501
    Abstract: In a cup attaching apparatus, a cup is attached as a processing jig to a subject lens along a reference axis, the lens and an index plate having an index of a predetermined pattern are illuminated by substantially parallel rays of light shaped into a diameter larger than a diameter of the lens so that an image of the lens and an image of the index are projected onto a screen, and the index image projected onto the screen is detected, whereas an entire image of the lens projected onto the screen is picked up. An optical center of the lens with respect to the reference axis is obtained on the basis of the index image detected by said detecting means, thereby displaying in a superposed manner alignment information indicating a relative position of the optical center with respect to the reference axis and the image thus picked up. The alignment is effected while observing the displayed information.
    Type: Grant
    Filed: August 31, 2000
    Date of Patent: September 28, 2004
    Assignee: Nidek Co., Ltd.
    Inventor: Toshiaki Mizuno
  • Patent number: 6766662
    Abstract: There are provided a method of manufacturing a glass part for connecting optical fibers, which allows insertion of optical fibers into the internal hole of the glass part smoothly, and glass parts for connecting optical fibers manufactured using the method. Predetermined parts of a glass tube having an internal hole are heated while pressure is applied into the internal hole, to expand the predetermined parts, thus forming tapered portions. As a result, a continuous curved surface can be achieved at the boundary between each tapered portion of each obtained glass part and the internal hole thereof, and the surface can be made smooth where the tapers are formed.
    Type: Grant
    Filed: April 2, 2001
    Date of Patent: July 27, 2004
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Masahiro Morishita, Katsuya Kamisaku, Toshiaki Mizuno