Patents by Inventor Kazuaki Murayama

Kazuaki Murayama 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).

  • Patent number: 9545905
    Abstract: An electric brake device includes a first slave piston which is housed in a cylinder body and generates hydraulic pressure in a first hydraulic chamber by moving forward, a motor which transmits a driving force to the first slave piston, and a restriction pin which is inserted and secured to the cylinder body in a direction perpendicular to an axial direction of the cylinder body and restricts a backward position of the first slave piston when a hydraulic pressure is applied from an outside to the first hydraulic chamber, wherein the restriction pin is inserted and secured to the cylinder mechanism in the direction perpendicular to the axial direction of the cylinder main body. Further, a clearance is formed between an inner peripheral wall of the cylinder body and a first groove portion and second groove portion which are formed on an outer surface of the restriction pin.
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: January 17, 2017
    Assignees: Honda Motor Co., Ltd., Autoliv Nissin Brake Systems Japan Co., Ltd.
    Inventors: Takaaki Ohnishi, Kazuaki Murayama, Hiroshi Nakano, Kazuyoshi Akutsu, Hideo Miyabayashi, Yoshiyuki Takamatsu, Nobuyuki Kobayashi, Motoyasu Nakamura, Yoshiteru Matsunaga
  • Patent number: 9522666
    Abstract: A lid member has an external shape inscribing a quadrilateral formed by two sets of two facing sides, and has: a pair of first cut-out sections configured by cutting out, in the same size, a pair of diagonal corners from among the two sets of diagonal corners of the quadrilateral; and a pair of second cut-out sections configured by cutting out the other diagonal corners in the same size. The outer shape of the lid member is formed in a point-symmetric shape relative to the center of an opening in a peripheral wall section. The first cut-out sections have a larger surface area than the second cut-out sections, and one out of the pair of first cut-out sections is configured so as to be arranged in the vehicle progression direction and at the bottom in the vertical direction, when a base body is mounted to a vehicle.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: December 20, 2016
    Assignees: Autoliv Nissin Brake Systems Japan Co., Ltd., Honda Motor Co., Ltd.
    Inventors: Motoyasu Nakamura, Kazuaki Murayama, Takaaki Ohnishi
  • Patent number: 9522662
    Abstract: A cylinder device, which is provided with: a substrate having a cylinder hole and a reservoir union port; a piston which is inserted into the cylinder hole; a regulation member which regulates the rearward limit of the piston; a reservoir having a liquid supply part; and a seal member which is for the reservoir and which is externally fitted to the liquid supply part. Therein: the substrate comprises a mounting hole and a first communication hole which open to the reservoir union port and the cylinder hole; the regulation member is inserted into the mounting hole (11h); and the liquid supply part has a cut-out section and a tip section arranged so as to face the regulation member. This structure enables the number of components to be reduced, reduces the size of the substrate, and also prevents air from collecting inside the reservoir union port.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: December 20, 2016
    Assignees: Honda Motor Co., Ltd., Autoliv Nissin Brake Systems Japan Co., Ltd.
    Inventors: Kazuaki Murayama, Takaaki Ohnishi, Nobuyuki Kobayashi
  • Patent number: 9522664
    Abstract: An electric brake actuator provided with a main reservoir attached to a vehicle frame, a first reservoir attached to an input device and coupled to the main reservoir via a pipe, and a second reservoir coupled to the main reservoir via another pipe and directly mounted to a motor cylinder, wherein the second reservoir is disposed below the main reservoir in the vertical up and down direction.
    Type: Grant
    Filed: November 17, 2011
    Date of Patent: December 20, 2016
    Assignee: Honda Motor Co., Ltd.
    Inventors: Takaaki Ohnishi, Kazuaki Murayama
  • Patent number: 9499146
    Abstract: Provided is a hydraulic braking device wherein the heat of a driving coil can be absorbed by a base body, and the heat radiation performance is excellent. The hydraulic braking device having a base body that includes therein a fluid passage for brake fluid, includes: a solenoid valve disposed on one surface of the base body; and a driving coil attached around an axis of the solenoid valve, wherein the one surface of the base body is provided with a wall surface facing an outer circumferential surface of the driving coil. A lower surface of the driving coil is in contact with the one surface of the base body, and a clearance is formed between the outer circumferential surface of the driving coil and the wall surface.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: November 22, 2016
    Assignees: Autoliv Nissin Brake Systems Japan Co., Ltd., Honda Motor Co., Ltd.
    Inventors: Yoshiteru Matsunaga, Motoyasu Nakamura, Kazuaki Murayama
  • Patent number: 9421957
    Abstract: A braking device includes a guide piston which surrounds the outer periphery of a rod part of a second slave piston, a cup seal which is mounted on the second slave piston, and a seal member which is provided on the guide piston. The second slave piston includes an enlarged diameter portion which comes into contact with an axial-direction surface of the guide piston when the second slave piston is in the initial position, and the enlarged diameter portion is provided with a cut-out section which extends in the internal diameter direction of the second slave piston.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: August 23, 2016
    Assignees: Honda Motor Co., Ltd., Nissin Kogyo Co., Ltd.
    Inventors: Kazuaki Murayama, Jiro Suzuki, Makoto Sawai, Takaaki Ohnishi, Nobuyuki Kobayashi, Motoyasu Nakamura
  • Patent number: 9419037
    Abstract: Provided is an imaging apparatus having a plurality of light receiving parts for each one microlens in order for capturing a three-dimensional image, while being capable of obtaining a more natural image when creating a two-dimensional image. The imaging apparatus includes: a microlens array (2) having a plurality of microlenses (20) regularly aligned two-dimensionally; an imaging lens for imaging light from a subject onto the microlens array (2); and a plurality of light receiving parts (22L, 22R) disposed for each of the plurality of microlenses (20). The plurality of light receiving parts (22L, 22R) associated with each microlens (20) receive the light from the subject that has been imaged onto the microlens and subject the light to photoelectric conversion. The imaging lens has a pupil which is disposed as being out of conjugation with a light receiving plane of the light receiving parts (22L, 22R).
    Type: Grant
    Filed: March 2, 2016
    Date of Patent: August 16, 2016
    Assignee: Olympus Corporation
    Inventor: Kazuaki Murayama
  • Publication number: 20160181300
    Abstract: Provided is an imaging apparatus having a plurality of light receiving parts for each one microlens in order for capturing a three-dimensional image, while being capable of obtaining a more natural image when creating a two-dimensional image. The imaging apparatus includes: a microlens array (2) having a plurality of microlenses (20) regularly aligned two-dimensionally; an imaging lens for imaging light from a subject onto the microlens array (2); and a plurality of light receiving parts (22L, 22R) disposed for each of the plurality of microlenses (20). The plurality of light receiving parts (22L, 22R) associated with each microlens (20) receive the light from the subject that has been imaged onto the microlens and subject the light to photoelectric conversion. The imaging lens has a pupil which is disposed as being out of conjugation with a light receiving plane of the light receiving parts (22L, 22R).
    Type: Application
    Filed: March 2, 2016
    Publication date: June 23, 2016
    Applicant: OLYMPUS CORPORATION
    Inventor: Kazuaki Murayama
  • Patent number: 9327697
    Abstract: A first slave piston and a second slave piston are disposed in tandem in series within a cylinder body, and the pistons are arranged so that part of the shaft section of the second slave piston overlaps with the inner periphery of an opening section provided in the backward side, in the displacement direction, of the first slave piston. A long hole extending along the axial direction of the second slave piston is provided in the shaft section, and a connection pin which regulates the initial position of the second slave piston is inserted into the long hole.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: May 3, 2016
    Assignees: Honda Motor Co., Ltd., Nissin Kogyo Co., Ltd.
    Inventors: Kazuaki Murayama, Jiro Suzuki, Nobutake Hyodo, Nobuyuki Kobayashi, Kouji Sakai
  • Patent number: 9302662
    Abstract: Provided is a vehicle brake system including a master cylinder which generates a master hydraulic pressure through an operation of a brake pedal by an operator, and a cylinder body which houses a first and second slave pistons driven by an electric motor operated in accordance with an operation amount of the brake pedal, and is formed with a first hydraulic chamber and a second hydraulic chamber for generating a slave hydraulic pressure through operations of the first and second slave pistons. Further, the cylinder body includes a first bleeder and a second bleeder which are configured to be switchable between open states in which a first hydraulic chamber and a second hydraulic chamber are in communication with an external of the cylinder body and closed states in which the first hydraulic chamber and the second hydraulic chamber are not in communication with the external of the cylinder body.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: April 5, 2016
    Assignee: Honda Motor Co., Ltd.
    Inventors: Kazuaki Murayama, Jiro Suzuki, Hirofumi Adachi, Takaaki Ohnishi
  • Patent number: 9305957
    Abstract: Provided is an imaging apparatus having a plurality of light receiving parts for each one microlens in order for capturing a three-dimensional image, while being capable of obtaining a more natural image when creating a two-dimensional image. The imaging apparatus includes: a microlens array (2) having a plurality of microlenses (20) regularly aligned two-dimensionally; an imaging lens for imaging light from a subject onto the microlens array (2); and a plurality of light receiving parts (22L, 22R) disposed for each of the plurality of microlenses (20). The plurality of light receiving parts (22L, 22R) associated with each microlens (20) receive the light from the subject that has been imaged onto the microlens and subject the light to photoelectric conversion. The imaging lens has a pupil which is disposed as being out of conjugation with a light receiving plane of the light receiving parts (22L, 22R).
    Type: Grant
    Filed: October 21, 2015
    Date of Patent: April 5, 2016
    Assignee: OLYMPUS CORPORATION
    Inventor: Kazuaki Murayama
  • Patent number: 9302664
    Abstract: An input device of a vehicle brake system integrally includes an integrally provided master cylinder and a stroke simulator which communicate via a hydraulic communication path. The stroke simulator is provided with a simulator piston accommodated within a simulator accommodation chamber. The simulator accommodation chamber has an opening portion enabling the insertion of the simulator piston into the simulator accommodation chamber from the side on which the brake pedal is disposed relative to the dashboard.
    Type: Grant
    Filed: November 17, 2011
    Date of Patent: April 5, 2016
    Assignee: Honda Motor Co., Ltd.
    Inventors: Kazuaki Murayama, Kunimichi Hatano, Arata Inoue, Kazuyoshi Akutsu, Takaaki Ohnishi
  • Publication number: 20160090070
    Abstract: A cylinder device includes a regulation mechanism that regulates separation distance between a front piston and a rear piston. A spring seat member of the regulation mechanism includes a spring reception part that projects toward a retainer side to receive a rear end of a spring, a cup seal holding part that projects on an opposite side from the retainer to hold a cup seal arranged on the rear piston, and a projection part that projects on the opposite side from the retainer. The projection part becomes abuttable on the retainer by a stroke of the rear piston if the spring reception part and the cup seal holding part are installed reversely-oriented on the rear piston.
    Type: Application
    Filed: September 29, 2015
    Publication date: March 31, 2016
    Inventors: Kazuhiro TAGATA, Nobuyuki KOBAYASHI, Motoyasu NAKAMURA, Yoshiyuki TAKAMATSU, Hideki HIDUME, Kazuaki MURAYAMA, Nobutake HYODO
  • Patent number: 9290170
    Abstract: A structure for attaching a motor cylinder device to the body of the vehicle, said vehicle brake system including: an input device via which an operator inputs brake operations; and a motor cylinder device that generates hydraulic brake pressure on the basis of electrical signals based on said brake operations. Said motor cylinder device has: an electric motor that operates on the basis of electrical signals; a driving-force transmission unit that transmits driving force from the electric motor; and a cylinder mechanism that applies pressure to a brake fluid by moving a piston axially by means of the driving force transmitted by the driving-force transmission unit. A mount for attaching the motor cylinder device to the body of the vehicle is provided near the center of gravity of the motor cylinder device. This makes it possible to minimize displacement of the electric brake actuator when subjected to vibration.
    Type: Grant
    Filed: November 17, 2011
    Date of Patent: March 22, 2016
    Assignee: Honda Motor Co., Ltd.
    Inventors: Arata Inoue, Kunimichi Hatano, Takaaki Ohnishi, Kazuyoshi Akutsu, Kazuaki Murayama, Kaoru Akahane, Makoto Sawai, Kenji Hattori, Takehiro Horiuchi, Toru Mabuchi
  • Patent number: 9266512
    Abstract: A braking device includes a guide piston which surrounds the outer periphery of a rod part of a second slave piston, a cup seal which is mounted on the second slave piston, and a seal member which is provided on the guide piston. The second slave piston includes an enlarged diameter portion which comes into contact with an axial-direction surface of the guide piston when the second slave piston is in the initial position, and the enlarged diameter portion is provided with a cut-out section which extends in the internal diameter direction of the second slave piston.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: February 23, 2016
    Assignees: Honda Motor Co., Ltd., Nissin Kogyo Co., Ltd.
    Inventors: Kazuaki Murayama, Jiro Suzuki, Makoto Sawai, Takaaki Ohnishi, Nobuyuki Kobayashi, Motoyasu Nakamura
  • Publication number: 20160043124
    Abstract: Provided is an imaging apparatus having a plurality of light receiving parts for each one microlens in order for capturing a three-dimensional image, while being capable of obtaining a more natural image when creating a two-dimensional image. The imaging apparatus includes: a microlens array (2) having a plurality of microlenses (20) regularly aligned two-dimensionally; an imaging lens for imaging light from a subject onto the microlens array (2); and a plurality of light receiving parts (22L, 22R) disposed for each of the plurality of microlenses (20). The plurality of light receiving parts (22L, 22R) associated with each microlens (20) receive the light from the subject that has been imaged onto the microlens and subject the light to photoelectric conversion. The imaging lens has a pupil which is disposed as being out of conjugation with a light receiving plane of the light receiving parts (22L, 22R).
    Type: Application
    Filed: October 21, 2015
    Publication date: February 11, 2016
    Applicant: OLYMPUS CORPORATION
    Inventor: Kazuaki Murayama
  • Patent number: 9233677
    Abstract: There is provided a vehicle brake system wherein it is possible to prevent the ingress of brake fluid leaking from the cylinder main body of an electric brake actuator constituting the vehicle brake system, and to dispose the electric brake actuator in a power plant storage chamber in a space-efficient manner. A vehicle brake system configured by disposing an input device and a motor cylinder for generating brake fluid pressure by driving a hydraulic pressure controlling piston stored in a cylindrical cylinder main body by means of an electric motor at least in accordance with the brake operation, the vehicle brake system being characterized in that: the motor cylinder is attached in a manner such that at least a portion of the cylinder main body overlaps with a power plant in the vehicle up and down direction; and the electric motor is disposed on top of the cylinder main body.
    Type: Grant
    Filed: November 17, 2011
    Date of Patent: January 12, 2016
    Assignee: Honda Motor Co., Ltd.
    Inventors: Takaaki Ohnishi, Kazuaki Murayama
  • Patent number: 9190436
    Abstract: Provided is an imaging apparatus having a plurality of light receiving parts for each one microlens in order for capturing a three-dimensional image, while being capable of obtaining a more natural image when creating a two-dimensional image. The imaging apparatus includes: a microlens array (2) having a plurality of microlenses (20) regularly aligned two-dimensionally; an imaging lens for imaging light from a subject onto the microlens array (2); and a plurality of light receiving parts (22L, 22R) disposed for each of the plurality of microlenses (20). The plurality of light receiving parts (22L, 22R) associated with each microlens (20) receive the light from the subject that has been imaged onto the microlens and subject the light to photoelectric conversion. The imaging lens has a pupil which is disposed as being out of conjugation with a light receiving plane of the light receiving parts (22L, 22R).
    Type: Grant
    Filed: November 6, 2014
    Date of Patent: November 17, 2015
    Assignee: OLYMPUS CORPORATION
    Inventor: Kazuaki Murayama
  • Patent number: 9106899
    Abstract: An apparatus has a synchronizing signal generator to which a trigger signal is input and that outputs a first synchronizing signal and a second synchronizing signal based on the trigger signal, an image pickup unit that has an image pickup surface, performs a first image picking-up based on the first synchronizing signal, and performs a second image picking-up based on the second synchronizing signal, and an image pickup element tilting unit that changes the angle of the image pickup surface relative to the optical axis during a period after the first image picking-up and before the second image picking-up.
    Type: Grant
    Filed: December 13, 2011
    Date of Patent: August 11, 2015
    Assignee: OLYMPUS CORPORATION
    Inventors: Kazuaki Murayama, Hisashi Goto, Kengo Enomoto, Kazuya Yamanaka
  • Publication number: 20150158474
    Abstract: Provided is a master cylinder apparatus with a reduced size enabled by simplifying the fluid passageway configuration. A master cylinder apparatus which includes a base member containing a fluid passageway for brake fluid and to which an operation of a brake operator is inputted is provided with: a master cylinder installed on the base member to generate a fluid pressure based on an input produced by operating the brake operator; and at least two solenoid valves attached to one side of the base member to open or close the fluid passageway. The two solenoid valves are disposed symmetrically with respect to a central axis along the axial direction of the master cylinder as viewed from a direction perpendicular to the one side of the base member.
    Type: Application
    Filed: March 29, 2013
    Publication date: June 11, 2015
    Inventors: Yoshiteru Matsunaga, Motoyasu Nakamura, Kazuaki Murayama