Patents by Inventor Takahiro Oikawa
Takahiro Oikawa 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: 7230830Abstract: In a state wherein front ends of latch members 18A and 18B are apart from each other so that the upper surface of an alignment plate/positioning member 24 is outside, a pressing section 12PU of a heat sink member 12 is brought into contact with the periphery of a semiconductor device 22.Type: GrantFiled: April 15, 2005Date of Patent: June 12, 2007Assignee: Yamaichi Electronics Co., Ltd.Inventors: Ryo Ujike, Takahiro Oikawa, Katsumi Suzuki, Eiji Kobori, Eisaku Tsubota
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Patent number: 6982410Abstract: A photoelectric sensor includes: a light projecting section projecting detection medium light to a detection object region; and a light receiving section receiving reflecting light or transmitted light from the detection object region, the sections being in a single piece or in separate pieces. The light projecting section includes: a light source generating the detection medium light; and a light projecting lens for collimating or collecting the detection medium light from the light source to form a beam spot or a light collecting point in the detection object region. The light projecting section further includes: a deflection angle adjusting unit capable of finely adjusting an optical axis deflection angle of the detection medium light projected to the detection object region from the light projecting section.Type: GrantFiled: August 5, 2003Date of Patent: January 3, 2006Assignee: Omron CorporationInventors: Takahiro Oikawa, Tadashi Senga
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Publication number: 20050231919Abstract: In a state wherein front ends of latch members 18A and 18B are apart from each other so that the upper surface of an alignment plate/positioning member 24 is outside, a pressing section 12PU of a heat sink member 12 is brought into contact with the periphery of a semiconductor device 22.Type: ApplicationFiled: April 15, 2005Publication date: October 20, 2005Inventors: Ryo Ujike, Takahiro Oikawa, Katsumi Suzuki, Eiji Kobori, Eisaku Tsubota
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Patent number: 6855896Abstract: In a vehicular lever switch having a resistor at a fixed contact plate to be combined with a pivoting knob, when a passenger charged with static electricity touches the lever, the resistor is to be prevented from being damaged. A fixed contact plate is arranged with a resistor and conductors and extended from both ends thereof in a ring-like shape to constitute a fixed contact. Further, an extended portion extended in a circular arc shape is formed on an outer side of the resistor with a gap from the conductor. Even when the hand of a passenger charged with static electricity touches a vicinity of a pivoting knob and the static electricity is applied to the fixed contact plate, the static electricity flows to the extended portion and is discharged via the conductor and a terminal. Thereby, the resistor is not damaged by static electricity.Type: GrantFiled: June 19, 2003Date of Patent: February 15, 2005Assignee: Niles Parts Co., Ltd.Inventor: Takahiro Oikawa
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Patent number: 6758684Abstract: In an IC socket of an open top type having a plurality of pin type contacts for electrical connection with an IC package inserted thereinto, the IC socket includes a socket body having a base plate, a vertically movable cover, a platform attached to the base plate and having an IC package mounting portion, and edge moving mechanisms each having a latch lever for holding the IC package placed on the platform and adapted to move the IC package from one side to the opposite side for adjusting and correcting the position of the IC package.Type: GrantFiled: June 5, 2002Date of Patent: July 6, 2004Assignee: Yamaichi Electronics Co., Ltd.Inventors: Takahiro Oikawa, Masahiro Kawano
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Publication number: 20040079871Abstract: A photoelectric sensor includes: a light projecting section projecting detection medium light to a detection object region; and a light receiving section receiving reflecting light or transmitted light from the detection object region, the sections being in a single piece or in separate pieces. The light projecting section includes: a light source generating the detection medium light; and a light projecting lens for collimating or collecting the detection medium light from the light source to form a beam spot or a light collecting point in the detection object region. The light projecting section further includes: a deflection angle adjusting unit capable of finely adjusting an optical axis deflection angle of the detection medium light projected to the detection object region from the light projecting section.Type: ApplicationFiled: August 5, 2003Publication date: April 29, 2004Applicant: OMRON CORPORATIONInventors: Takahiro Oikawa, Tadashi Senga
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Publication number: 20030234164Abstract: In a vehicular lever switch having a resistor at a fixed contact plate to be combined with a pivoting knob, when a passenger charged with static electricity touches the lever, the resistor is to be prevented from being damaged. A fixed contact plate is arranged with a resistor and conductors and extended from both ends thereof in a ring-like shape to constitute a fixed contact. Further, an extended portion extended in a circular arc shape is formed on an outer side of the resistor with a gap from the conductor. Even when the hand of a passenger charged with static electricity touches a vicinity of a pivoting knob and the static electricity is applied to the fixed contact plate, the static electricity flows to the extended portion and discharged via the conductor and a terminal. Thereby, the resistor is not damaged by static electricity.Type: ApplicationFiled: June 19, 2003Publication date: December 25, 2003Inventor: Takahiro Oikawa
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Publication number: 20020187665Abstract: In an IC socket of an open top type having a plurality of pin type contacts for electrical connection with an IC package inserted thereinto, the IC socket includes a socket body having a base plate, a vertically movable cover, a platform attached to the base plate and having an IC package mounting portion, and edge moving mechanisms each having a latch lever for holding the IC package placed on the platform and adapted to move the IC package from one side to the opposite side for adjusting and correcting the position of the IC package.Type: ApplicationFiled: June 5, 2002Publication date: December 12, 2002Applicant: YAMAICHI ELECTRONICS CO., LTD.Inventors: Takahiro Oikawa, Masahiro Kawano
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Patent number: 5665948Abstract: An automobile knob switch assembly comprising an operating lever 1 that has a shaft rod 1a. A terminal plate 2 is inserted into an opening part if of the operating lever 1. A movable plate 3 has a movable contact plate 13 that contacts the stationary contact plates 8 placed in the terminal plate 2, a through hole 3a through which a cylinder part 4a of a moderator 4 is inserted, and latching pieces 3b that are latched onto the moderator 4. The moderator 4 has an elastic claw 4c that is latched onto the shaft rod 1a. A knob 5 has a latching part 5b that is engaged to a latching piece 3e formed in the periphery of the movable plate 3. A second embodiment is disclosed that has two knobs for the rotary switch installed at the tip of the operating lever 15. The construction of the knob switch assembly permits the parts of the switch assembly to be automatically assembled with machines for mass production and reduced costs.Type: GrantFiled: April 5, 1996Date of Patent: September 9, 1997Assignee: Niles Parts Co., Ltd.Inventor: Takahiro Oikawa
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Patent number: 5521633Abstract: A monitoring method for moving vehicles allows the presence of danger to be determined from the magnitude of an optical flow vector. The optical flow vector is detected as a movement of a single point on an object taken over two images, with one image taken at a preceding time and the other image taken at succeeding time in a series of images. A long and narrow window set in a radial direction from a focus of expansion (FOE) of the earlier image is moved in the same direction on the latter image. An optical flow vector of a target point is defined by a vector connecting the midpoint of a location of a subsequent window and the midpoint of a location at which the long and narrow window is set in the earlier image. The location of the subsequent window is determined by minimizing the sum of absolute values of differences in luminance between the long and narrow window and an area of the latter image overlapping such long and narrow window.Type: GrantFiled: September 24, 1993Date of Patent: May 28, 1996Assignee: Yazaki CorporationInventors: Masato Nakajima, Takahiro Fujishiro, Norio Kitamura, Kazuyuki Sasaki, Takahiro Oikawa, Kouji Ishii
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Patent number: 5320063Abstract: Disclosure is a luminous pointer made of a light emission element of the inorganic substance dispersion type, high in accuracy of reading, and low in cost. The light emission element of the inorganic substance dispersion type is shaped as a rod, and includes a linear metal core, an electrically-insulating reflective layer made of an enamel and disposed on the core, a fluorescent light emission layer which is made of an enamel and a fluorescent substance dispersed therein and is disposed on the reflective layer, an electroconductive film disposed on the light emission layer and capable of being electrically connected to the core, and an outer electrically-insulating layer disposed on the film. The film has at least one slit which has a width smaller than the diameter of the luminous pointer and extends as a luminously visible portion in the longitudinal direction of the film. An intermediate electrically-insulating layer made of an enamel may be provided between the light emission layer and the film.Type: GrantFiled: March 22, 1993Date of Patent: June 14, 1994Assignee: Yazaki CorporationInventors: Hiroyuki Ogura, Masaya Sugita, Takahiro Oikawa
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Patent number: 5226324Abstract: An angular velocity sensor for detecting angular velocity by converting deflection caused by the coriolis force into an electrical signal. The sensor includes a vibratory member having at least three main surfaces including a first main surface having a driving transducer provided thereon, and second and third surfaces substantially perpendicular to the first main surface respectively, and being parallel to each other, the second and third main surfaces having detecting piezoelectric transducers, respectively. Additionally, support members are connected to the second and third main surfaces to respectively support vibration-steady points of the vibratory member. At least one longitudinal end portion of the vibratory member has a cross-section in such a manner that a length between the second and third main surfaces is shorter than a length of the first main surface. In this manner, the sensitivity of the angular velocity sensor is improved.Type: GrantFiled: July 16, 1990Date of Patent: July 13, 1993Assignee: Yazaki CorporationInventors: Takahiro Oikawa, Yoshihito Aoki, Naoto Ishikawa
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Patent number: 5197331Abstract: An oscillatory angular speed detecting apparatus is disclosed which includes a pillar-shaped oscillator body and drive and readout piezoelectric transducers attached to first, second, and third surfaces of the oscillator body, the first side surface being perpendicular to the second side surface and the third side surface being parallel to the first side surface, in which vibration of the oscillator body is transduced into a readout signal by the readout transducer. A phase detecting device detects variations of phases of the readout signals, and an amplitude detecting device detects variations of amplitudes of the readout signals, and the angular speed is detected from the phases detected by the phase detecting device and/or the amplitude detected by the amplitude detecting device.Type: GrantFiled: March 13, 1992Date of Patent: March 30, 1993Assignee: Yazaki CorporationInventor: Takahiro Oikawa
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Patent number: 4916650Abstract: To eliminate the harmful influence of drift when integrating a sensor signal, the sensor signal is integrated from a time point a first predetermined time period before the sensor signal level becomes higher than the perdetermined signal level to a time point a second predetermined time period after the sensor signal level becomes lower than the predetermined signal level.Type: GrantFiled: February 19, 1988Date of Patent: April 10, 1990Assignee: Yazaki CorporationInventor: Takahiro Oikawa
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Patent number: 4898031Abstract: To increase the stability and sensitivity of a vibrational angular velocity sensor, the vibrator is airtightly housed within a glass vacuum casing whose inside surface is coated with a metallic film. Further, conductive lead pins electrically connected between vibrator signal terminals and a printed circuit board for a signal processing circuit and fixing pins mechanically fixed to the printed circuit board are arranged with a constant length outside the casing in parallel to each other. Further, two vibrator support pins are fixed to the glass casing by glass material. To obtain a high vacuum within the glass casing, a subcasing including a getter is connected to the casing through a connecting tube cut off or sealed after evacuation.Type: GrantFiled: July 22, 1988Date of Patent: February 6, 1990Assignee: Yazaki CorporationInventors: Takahiro Oikawa, Yoshiyuki Suzuki, Tatsumi Ohtsuka
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Patent number: 4879658Abstract: In a navigation system by which vehicle travel locations are detected by an angular rate sensor and a distance sensor and the detected vehicle travel locations are corrected so as to be displayed along a map road, the display errors are improved by matching a vehicle turn point behind a route judge area to a map branch point; a route judge area is adjusted according to route conditions to an adjacent branch point or detected travel angles or a distance between two adjacent branch points. Further, non-corrected vehicle location data are displayed only within the route judge area to remove unnatural vehicle location display.Type: GrantFiled: February 9, 1988Date of Patent: November 7, 1989Assignee: Yazaki CorporationInventors: Makoto Takashima, Yoshihito Aoki, Takahiro Oikawa
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Patent number: 4858080Abstract: The headlight moving apparatus comprises a yaw rate sensor, a headlight position sensor, a vehicle speed sensor, a CPU, and a headlight actuator. The CPU calculates an appropriate headlight turning position on the basis of these three sensor signals. Since the yaw rate sensor can directly detect the vehicle turning motion and direction, it is possible to move the headlights right and left more reliably. Therefore, the adjusted headlights can brighten remote forward road surface when the vehicle runs along a curved road.Type: GrantFiled: March 9, 1988Date of Patent: August 15, 1989Assignee: Yazaki CorporationInventor: Takahiro Oikawa
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Patent number: 4836023Abstract: To increase the quality factor Q of the vibrational angular rate sensor and therefore the sensitivity of the sensor, stabilize the sensor performance, facilitate wiring work, and minimize the sensor, a square pillar shaped vibrator, four vibrator node support pins and an external vibrator support base are all formed integral with each other from a single constant elasticity material block. Further, at least three and preferably four piezoelectric elements are connected to an external circuit via at least three and preferably four separate thin film conductive layers each extending from each piezoelectric element, on and along each vibrator node support pin, to an external vibrator support base.Type: GrantFiled: March 9, 1988Date of Patent: June 6, 1989Assignee: Yazaki CorporationInventor: Takahiro Oikawa
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Patent number: D532420Type: GrantFiled: February 13, 2006Date of Patent: November 21, 2006Assignee: Omron CorporationInventor: Takahiro Oikawa