Patents by Inventor Yuji Murayama

Yuji 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: 7913354
    Abstract: An automobile door checker includes a case secured to a door, a check plate that runs movably through the case and is pivotably supported on a body, a detent member fitted into and retained by the case and working in cooperation with a detent face of the check plate, and a resilient member that is made of a resilient material and is provided in a compressed state in a housing chamber defined between an outer end face of the detent member and an inner end face of the case, wherein the resilient member is formed so that it substantially fills the housing chamber, the resilient member is provided with a hole portion that allows resilient deformation of the resilient member, the hole portion being sealed by the outer end face and the inner end face, and a half of the resilient member on the outer end face side and a half on the inner end face side are symmetrical.
    Type: Grant
    Filed: July 13, 2006
    Date of Patent: March 29, 2011
    Assignees: Honda Motor Co., Ltd., Rikenkaki Kogyo Kabushiki Kaisha
    Inventors: Yuujiro Tashima, Hidetoshi Ijuin, Yasuhiko Yoshida, Yuji Murayama, Yuji Arie
  • Publication number: 20090217592
    Abstract: An automobile door checker includes a case secured to a door, a check plate that runs movably through the case and is pivotably supported on a body, a detent member fitted into and retained by the case and working in cooperation with a detent face of the check plate, and a resilient member that is made of a resilient material and is provided in a compressed state in a housing chamber defined between an outer end face of the detent member and an inner end face of the case, wherein the resilient member is formed so that it substantially fills the housing chamber, the resilient member is provided with a hole portion that allows resilient deformation of the resilient member, the hole portion being sealed by the outer end face and the inner end face, and a half of the resilient member on the outer end face side and a half on the inner end face side are symmetrical.
    Type: Application
    Filed: July 13, 2006
    Publication date: September 3, 2009
    Inventors: Yuujiro Tashima, Hidetoshi Ijuin, Yasuhiko Yoshida, Yuji Murayama, Yuji Arie
  • Patent number: 7506406
    Abstract: A door checker for an automobile includes: a case fixed to one of a body and a door of the automobile; a check lever movably penetrating the case, oscillatably axis-supported by the other of the body and the door, and provided with a rack on one side face; a pinion meshed with the rack and rotatably housed in the case; a movable shoe housed in the case so that the movable shoe can be engaged with and disengaged from a tooth portion of the pinion; and a check spring for biasing the movable shoe in the direction of engagement with the pinion. The door is held at an arbitrary opening degree by an engaging force of the movable shoe with the pinion due to a biasing force of the check spring. Thus, it is possible to easily set a large number of steps in an opening degree for holding the door.
    Type: Grant
    Filed: April 6, 2006
    Date of Patent: March 24, 2009
    Assignee: Honda Motor Co., Ltd.
    Inventors: Yuji Murayama, Junichi Yoshioka
  • Patent number: 7240399
    Abstract: In a door checker for an automobile, including: a case; a check plate which movably extends through the case and which has on its opposite sides ball guide grooves extending in a lengthwise direction; a pair of ball holders accommodated in the case; a pair of balls which are retained in hemispherical ball housings of the ball holders and which are rollably engaged in the ball guide grooves; and a check spring for biasing the ball holders toward said check plate; and a recess for retaining a grease on an inner surface of each of the ball housings and for accommodating a dust therein is formed in the inner surface of each of the ball housings. Thus, the sticking of the balls due to an entering dust can be prevented, and the smooth rotation and rolling of the balls can be ensured over a long term.
    Type: Grant
    Filed: July 7, 2003
    Date of Patent: July 10, 2007
    Assignees: Rikenkaki Kogyo Kabushiki Kaisha, Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Yuji Murayama, Makiko Honno
  • Patent number: 7204410
    Abstract: A structure of a system using an IC card is simplified. A controller and active antennas are connected to each other through a bus. The controller transmits a command outputted from a host computer and including an ID for discriminating the active antennas to all the active antennas connected to the bus. The respective active antennas judge whether or not the received command is directed to itself by checking the contained ID. In the case where it is judged that the command is directed to itself, transfer of data to the IC card is performed, and the result is transferred to the controller through the active antenna and the bus.
    Type: Grant
    Filed: May 20, 2005
    Date of Patent: April 17, 2007
    Assignee: Sony Corporation
    Inventors: Yuji Murayama, Susumu Kusakabe, Katsuyuki Tanaka
  • Publication number: 20060230574
    Abstract: A door checker for an automobile includes: a case fixed to one of a body and a door of the automobile; a check lever movably penetrating the case, oscillatably axis-supported by the other of the body and the door, and provided with a rack on one side face; a pinion meshed with the rack and rotatably housed in the case; a movable shoe housed in the case so that the movable shoe can be engaged with and disengaged from a tooth portion of the pinion; and a check spring for biasing the movable shoe in the direction of engagement with the pinion. The door is held at an arbitrary opening degree by an engaging force of the movable shoe with the pinion due to a biasing force of the check spring. Thus, it is possible to easily set a large number of steps in an opening degree for holding the door.
    Type: Application
    Filed: April 6, 2006
    Publication date: October 19, 2006
    Applicants: RIKENKAKI KOGYO KABUSHIKI KAISHA, HONDA MOTOR CO. LTD.
    Inventors: Yuji Murayama, Junichi Yoshioka
  • Patent number: 7076833
    Abstract: An automobile door checker includes a check plate, a shoe holder housed in a case, a shoe that is held by the shoe holder and the shoe slides on the check plate accompanying relative movement between the case and the check plate, and a check spring that resiliently urges the shoe holder toward the check plate in order to press the shoe against the check plate. The shoe is axially supported in the shoe holder so that the shoe can swing from a neutral position to forward and backward swing limits. The shoe is provided with return-to-neutral means for exhibiting a return force that makes the shoe return to the neutral position. The contact area between the shoe and the check plate is arranged so that the frictional force in the contact area becomes the smallest when the shoe reaches the shoe swing limits.
    Type: Grant
    Filed: April 14, 2004
    Date of Patent: July 18, 2006
    Assignees: Rikenkaki Kogyo Kabushiki Kaisha, Honda Motor Co., Ltd.
    Inventors: Yuji Murayama, Junichi Yoshioka
  • Patent number: 6966490
    Abstract: A structure of a system using an IC card is simplified. A controller and active antennas are connected to each other through a bus. The controller transmits a command outputted from a host computer and including an ID for discriminating the active antennas to all the active antennas connected to the bus. The respective active antennas judge whether or not the received command is directed to itself by checking the contained ID. In the case where it is judged that the command is directed to itself, transfer of data to the IC card is performed, and the result is transferred to the controller through the active antenna and the bus.
    Type: Grant
    Filed: May 8, 2000
    Date of Patent: November 22, 2005
    Assignee: Sony Corporation
    Inventors: Yuji Murayama, Susumu Kusakabe, Katsuyuki Tanaka
  • Publication number: 20050205659
    Abstract: A structure of a system using an IC card is simplified. A controller and active antennas are connected to each other through a bus. The controller transmits a command outputted from a host computer and including an ID for discriminating the active antennas to all the active antennas connected to the bus. The respective active antennas judge whether or not the received command is directed to itself by checking the contained ID. In the case where it is judged that the command is directed to itself, transfer of data to the IC card is performed, and the result is transferred to the controller through the active antenna and the bus.
    Type: Application
    Filed: May 20, 2005
    Publication date: September 22, 2005
    Inventors: Yuji Murayama, Susumu Kusakabe, Katsuyuki Tanaka
  • Patent number: 6886752
    Abstract: A portable electronic apparatus is disclosed which comprises a detecting element for detecting a high-frequency signal received by an antenna and for outputting the detected signal, a sampling element for sampling the detected signal with regard to a frequency higher than a clock frequency of the detected signal and for outputting sampled results, and a decoding element for decoding data transmitted by the high-frequency signal by use of the signal level distribution of the detected signal derived from the sampled results.
    Type: Grant
    Filed: December 19, 2000
    Date of Patent: May 3, 2005
    Assignee: Sony Corporation
    Inventors: Yuji Murayama, Shigeru Arisawa
  • Patent number: 6871382
    Abstract: In a door checker for an automobile, including an intermediate recess which is formed in a side face of a check lever and deeper than a ball guide groove and into which a check ball is fitted by a biasing force of a check spring in order to generate a moderation resistance at a position of at least one medium opening degree of a door, the intermediate recess is formed so that a second opening width in a direction intersecting a centerline of the ball guide groove is larger than a first opening width along the centerline of the ball guide groove. Thus, the feeling of moderation upon fitting between the check ball and the recess is improved, and the generation of an abnormal sound during passing of the check ball through the recess by rapidly opening or closing the door is prevented.
    Type: Grant
    Filed: August 18, 2003
    Date of Patent: March 29, 2005
    Assignees: Rikenkaki Kogyo Kabushiki Kaisha, Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Yuji Murayama, Takayuki Kubo, Takanori Usui, Toshio Takekata
  • Publication number: 20040251696
    Abstract: An automobile door checker includes a check plate, a shoe holder housed in a case, a shoe that is held by the shoe holder and slides on the check plate accompanying relative movement between the case and the check plate, and a check spring that resiliently urges the shoe holder toward the check plate in order to press the shoe against the check plate. The shoe is axially supported in the shoe holder so that the shoe can swing from a neutral position to forward and backward swing limits. The shoe is provided with return-to-neutral means for exhibiting a return force that makes the shoe return to the neutral position. The contact area between the shoe and the check plate is arranged so that the frictional force in the contact area becomes the smallest when the shoe reaches the shoe swing limits.
    Type: Application
    Filed: April 14, 2004
    Publication date: December 16, 2004
    Applicants: Rikenkaki Kogyo Kabushiki Kaisha, Honda Motor Co., Ltd.
    Inventors: Yuji Murayama, Junichi Yoshioka
  • Publication number: 20040111832
    Abstract: In a door checker for an automobile, including an intermediate recess which is formed in a side face of a check lever and deeper than a ball guide groove and into which a check ball is fitted by a biasing force of a check spring in order to generate a moderation resistance at a position of at least one medium opening degree of a door, the intermediate recess is formed so that a second opening width in a direction intersecting a centerline of the ball guide groove is larger than a first opening width along the centerline of the ball guide groove. Thus, the feeling of moderation upon fitting between the check ball and the recess is improved, and the generation of an abnormal sound during passing of the check ball through the recess by rapidly opening or closing the door is prevented.
    Type: Application
    Filed: August 18, 2003
    Publication date: June 17, 2004
    Inventors: Yuji Murayama, Takayuki Kubo, Takanori Usui, Toshio Takekata
  • Patent number: 6728993
    Abstract: In a check plate supporting structure, a check plate of a door checker interposed between a door support and a door supported on the door support is turnably supported on a bracket mounted to the door support. A pivot secured to the bracket is relatively turnably press-fitted into a polygonal bearing bore defined in the check plate. Large numbers of pressure-contact portions and gaps are alternately arranged between an inner peripheral surface of the bearing bore and an outer peripheral surface of the pivot in circumferential directions thereof. Thus, the looseness between the pivot secured to the bracket and the bearing bore in the check plate can be eliminated without excessive increase in turning torque of the check plate relative to the bracket, thereby preventing generation of an abnormal sound during opening and closing of the door and facilitating manual mounting of the door checker to the door support.
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: May 4, 2004
    Assignee: Rikenkaki Kogyo Kabushiki Kaisha
    Inventor: Yuji Murayama
  • Publication number: 20040075285
    Abstract: In a door checker for an automobile, including: a case; a check plate which movably extends through the case and which has on its opposite sides ball guide grooves extending in a lengthwise direction; a pair of ball holders accommodated in the case; a pair of balls which are retained in hemispherical ball housings of the ball holders and which are rollably engaged in the ball guide grooves; and a check spring for biasing the ball holders toward said check plate; and a recess for retaining a grease on an inner surface of each of the ball housings and for accommodating a dust therein is formed in the inner surface of each of the ball housings. Thus, the sticking of the balls due to an entering dust can be prevented, and the smooth rotation and rolling of the balls can be ensured over a long term.
    Type: Application
    Filed: July 7, 2003
    Publication date: April 22, 2004
    Inventors: Yuji Murayama, Makiko Honno
  • Patent number: 6539796
    Abstract: A liquid level sensor 18 has sensor probes 20a to 21b, and a monitor unit 23. The monitor unit 23 has a probe potential difference detecting section 25 for detecting the output potential difference between sensor probes 20a, 20b, and the output potential difference between sensor probes 21a, 21b; and a liquid level determining section 26 for determining the level of the liquid from the result of detection. The monitor unit 23 has a bubbling detection pulse generator section 28 for detecting an occurrence of bubbling of a bubbling gas from the result of detection by the probe potential difference detecting section 25 and generating a pulse signal, and a pulse counter 29 for counting the number of pulses generated by the bubbling detection pulse generator section 28, thereby making it possible to grasp the number of bubbling periods of the bubbling gas.
    Type: Grant
    Filed: October 30, 2001
    Date of Patent: April 1, 2003
    Assignee: Applied Materials, Inc.
    Inventors: Yoshikatsu Shirai, Yuji Murayama
  • Publication number: 20020152809
    Abstract: A liquid level sensor 18 has sensor probes 20a to 21b, and a monitor unit 23. The monitor unit 23 has a probe potential difference detecting section 25 for detecting the output potential difference between sensor probes 20a, 20b, and the output potential difference between sensor probes 21a, 21b; and a liquid level determining section 26 for determining the level of the liquid from the result of detection. The monitor unit 23 has a bubbling detection pulse generator section 28 for detecting an occurrence of bubbling of a bubbling gas from the result of detection by the probe potential difference detecting section 25 and generating a pulse signal, and a pulse counter 29 for counting the number of pulses generated by the bubbling detection pulse generator section 28, thereby making it possible to grasp the number of bubbling periods of the bubbling gas.
    Type: Application
    Filed: October 30, 2001
    Publication date: October 24, 2002
    Inventors: Yoshikatsu Shirai, Yuji Murayama
  • Publication number: 20010025887
    Abstract: A portable electronic apparatus is disclosed which comprises a detecting element for detecting a high-frequency signal received by an antenna and for outputting the detected signal; a sampling element for sampling the detected signal with regard to a frequency higher than a clock frequency of the detected signal and for outputting sampled results; and a decoding element for decoding data transmitted by the high-frequency signal by use of a signal level distribution of the detected signal derived from the sampled results.
    Type: Application
    Filed: December 19, 2000
    Publication date: October 4, 2001
    Inventors: Yuji Murayama, Shigeru Arisawa