Patents by Inventor Masashi Yanagawa
Masashi Yanagawa 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: 10072649Abstract: An electric pump includes a transmission unit that transmits rotational drive of a motor unit, a pump unit, and a rotary valve unit. The pump unit expands and contracts a pump chamber to draw in a fluid from an inlet and discharge the fluid from an outlet. The rotary valve unit includes a valve body and a valve cover. The valve body is rotated by the rotational drive force transmitted by the transmission unit. The valve cover includes a valve-side inlet that draws in a fluid and a plurality of fluid outlets that discharges the fluid to the exterior. The rotary valve unit is configured to switch the fluid outlets that come into communication with the inlet in accordance with rotational drive of the valve body. The valve body is intermittently driven by an intermittent drive mechanism that converts continuous drive corresponding to the rotational drive force into intermittent drive.Type: GrantFiled: May 20, 2016Date of Patent: September 11, 2018Assignees: Denso Corporation, Toyota Boshoku Kabushiki KaishaInventors: Kazutaka Sakohira, Kazuhiro Mori, Masaru Kubota, Yosuke Uno, Yuya Inoue, Masashi Yanagawa
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Patent number: 9878647Abstract: A vehicle seat includes a bladder as an actuator; a pump that is operated to supply air to the bladder; a switch that is operated to operate the pump; and a switching valve that is disposed in an air supply/discharge passage for the air for the bladder, the switching valve being configured to connect the air supply/discharge passage to a discharge port of the pump when the air is supplied to the bladder, and to connect the air supply/discharge passage to an exhaust port when the air is discharged from the bladder. The switching valve is incorporated in the switch, and is configured to receive an operating force applied to the switch, and to supply and discharge the air to and from the bladder in accordance with an operation of the switch.Type: GrantFiled: December 22, 2015Date of Patent: January 30, 2018Assignee: TOYOTA BOSHOKU KABUSHIKI KAISHAInventors: Yosuke Uno, Masashi Yanagawa, Koji Saito, Masahiko Onuma
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Publication number: 20160348670Abstract: An electric pump includes a transmission unit that transmits rotational drive of a motor unit, a pump unit, and a rotary valve unit. The pump unit expands and contracts a pump chamber to draw in a fluid from an inlet and discharge the fluid from an outlet. The rotary valve unit includes a valve body and a valve cover. The valve body is rotated by the rotational drive force transmitted by the transmission unit. The valve cover includes a valve-side inlet that draws in a fluid and a plurality of fluid outlets that discharges the fluid to the exterior. The rotary valve unit is configured to switch the fluid outlets that come into communication with the inlet in accordance with rotational drive of the valve body. The valve body is intermittently driven by an intermittent drive mechanism that converts continuous drive corresponding to the rotational drive force into intermittent drive.Type: ApplicationFiled: May 20, 2016Publication date: December 1, 2016Applicants: ASMO CO., LTD., TOYOTA BOSHOKU KABUSHIKI KAISHAInventors: Kazutaka Sakohira, Kazuhiro Mori, Masaru Kubota, Yosuke Uno, Yuya Inoue, Masashi Yanagawa
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Publication number: 20160185263Abstract: A vehicle seat includes a bladder as an actuator; a pump that is operated to supply air to the bladder; a switch that is operated to operate the pump; and a switching valve that is disposed in an air supply/discharge passage for the air for the bladder, the switching valve being configured to connect the air supply/discharge passage to a discharge port of the pump when the air is supplied to the bladder, and to connect the air supply/discharge passage to an exhaust port when the air is discharged from the bladder. The switching valve is incorporated in the switch, and is configured to receive an operating force applied to the switch, and to supply and discharge the air to and from the bladder in accordance with an operation of the switch.Type: ApplicationFiled: December 22, 2015Publication date: June 30, 2016Applicant: TOYOTA BOSHOKU KABUSHIKI KAISHAInventors: Yosuke UNO, Masashi YANAGAWA, Koji SAITO, Masahiko ONUMA
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Publication number: 20160106620Abstract: A massage apparatus includes: a pump that is an air supply source; a motor that actuates a distributor; a power switch that optionally supplies power to the pump and the motor to actuate the pump and the motor; and a limit switch that is connected in parallel with the power switch, and is operated by a cam working with the distributor so as to be turned ON when the distributor assumes a position to supply air to any of bladders, and so as to be turned OFF when the distributor assumes a position to discharge air from at least any of the bladders.Type: ApplicationFiled: October 16, 2015Publication date: April 21, 2016Applicant: TOYOTA BOSHOKU KABUSHIKI KAISHAInventors: Yosuke UNO, Koji SAITO, Masashi YANAGAWA, Masahiko ONUMA
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Publication number: 20080218902Abstract: A magnetic head has a main magnetic pole made of at least a magnetic material and a coil. The main magnetic pole has a stop layer through an inorganic insulating layer on both sides of the main magnetic pole in the widthwise direction. The boundary between the main magnetic pole and the metal layer becomes clear by the intervention of the inorganic insulating layer when viewing the flattened pattern plane by a scanning electron microscope and measuring the width of the main magnetic pole as a core width. The measurement accuracy of the main magnetic pole width can be improved and reductions in manufacturing yield rates which occur due to measurement errors can be prevented.Type: ApplicationFiled: February 25, 2008Publication date: September 11, 2008Applicant: FUJITSU LIMITEDInventors: Kazumasa Hosono, Yukinori Ikegawa, Masaya Kato, Masashi Yanagawa, Kaoru Yamakawa, Takashi Ito
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Patent number: 6873498Abstract: A magnetic head has a narrow upper magnetic pole and is capable of restricting side erasure and record bleeding. The magnetic head is capable of writing data on a recording medium, and includes an upper magnetic pole including a pole section which faces the recording medium and has a prescribed width, and a lower magnetic pole including grooves respectively formed on the both sides of the pole section. A level of edges of the grooves are lower than that of an upper face of the lower magnetic pole.Type: GrantFiled: March 20, 2002Date of Patent: March 29, 2005Assignee: Fujitsu LimitedInventors: Takashi Ito, Mitsumasa Okada, Masashi Yanagawa
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Patent number: 6705372Abstract: A buckle pivotally arranged in a movable clamp 12 of a first tube holder 1 is attached with play to a buckle 120 pivotally arranged in a movable clamp 82 of a second tube holder 2. When tubes are held in the first and second tube holders 1 and 2, release of the tubes from the holders 1 and 2 is prevented by a movement of a plunger 203 in correspondence of excitation and demagnetization of a solenoid 202 for a predetermined period of operation of the apparatus after holding the tubes (i.e., for a period required from the locking of the buckle 120 until the completion of moving-down of a wafer holder).Type: GrantFiled: July 11, 2002Date of Patent: March 16, 2004Assignee: Terumo Kabushiki KaishaInventors: Hiroaki Sano, Narukuni Nakada, Akihiko Iguchi, Yoshiyuki Yamada, Masashi Yanagawa, Takeshi Minatani
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Publication number: 20030112561Abstract: The magnetic head of the present invention has a narrow upper magnetic pole and capable of restricting side erasure and record bleeding. The magnetic head for writing data on a recording medium comprises: an upper magnetic pole including a pole section, which faces the recording medium and has a prescribed width; and a lower magnetic pole including grooves, which are respectively formed on the both sides of the pole section, wherein level of edges of the grooves are lower than that of an upper face of the lower magnetic pole.Type: ApplicationFiled: March 20, 2002Publication date: June 19, 2003Applicant: FUJITSU LIMITEDInventors: Takashi Ito, Mitsumasa Okada, Masashi Yanagawa
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Publication number: 20020174956Abstract: A buckle pivotally arranged in a movable clamp 12 of a first tube holder 1 is attached with play to a buckle 120 pivotally arranged in a movable clamp 82 of a second tube holder 2. When tubes are held in the first and second tube holders 1 and 2, release of the tubes from the holders 1 and 2 is prevented by a movement of a plunger 203 in correspondence of excitation and demagnetization of a solenoid 202 for a predetermined period of operation of the apparatus after holding the tubes (i.e., for a period required from the locking of the buckle 120 until the completion of moving-down of a wafer holder).Type: ApplicationFiled: July 11, 2002Publication date: November 28, 2002Applicant: Terumo Kabushiki KaishaInventors: Hiroaki Sano, Narukuni Nakada, Akihiko Iguchi, Yoshiyuki Yamada, Masashi Yanagawa, Takeshi Minatani
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Patent number: 6463979Abstract: A buckle pivotally arranged in a movable clamp 12 of a first tube holder 1 is attached with play to a buckle 120 pivotally arranged in a movable clamp 82 of a second tube holder 2. When tubes are held in the first and second tube holders 1 and 2, release of the tubes from the holders 1 and 2 is prevented by a movement of a plunger 203 in correspondence of excitation and demagnetization of a solenoid 202 for a predetermined period of operation of the apparatus after holding the tubes (i.e., for a period required from the locking of the buckle 120 until the completion of moving-down of a wafer holder).Type: GrantFiled: April 25, 2000Date of Patent: October 15, 2002Assignee: Terumo Kabushiki KaishaInventors: Hiroaki Sano, Narukuni Nakada, Akihiko Iguchi, Yoshiyuki Yamada, Masashi Yanagawa, Takeshi Minatani
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Patent number: 6460592Abstract: A tube connecting apparatus is arranged to hold tubes in a first tube holder and a second tube holder, to rotate a pair of rotatable clamping members which include separable pieces disposed in rotational symmetry for holding the tubes in either or both of the first tube holder and the second tube holder, to heat and melt the tubes by a heated cutting plate moving therebetween to cut the tubes, and to weld cut end faces of the different tubes. When the pair of clamping members are in a state of not holding the tubes rotation preventing members fixedly lock the clamping members in a predetermined position, preventing the clamping member from being rotated.Type: GrantFiled: April 25, 2000Date of Patent: October 8, 2002Assignee: Tervino Kabushiki KaishaInventors: Hiroaki Sano, Narukuni Nakada, Akihiko Iguchi, Yoshiyuki Yamada, Masashi Yanagawa, Takeshi Minatani