Patents by Inventor Yasuhito Sekihara
Yasuhito Sekihara 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: 8015994Abstract: A hydraulic unit is provided with a housing having two planar portions neighboring at a predetermined angle between them. At least one opening is formed on each of the planar portions. For example, one opening and at least two openings are formed on the two planar portions, respectively. A protective tape is adhered to the two planar portions of the housing for covering each opening formed on each of the two planar portions. The protective tape is cut by a laser beam, for example, to be separated into at least each one of a part for covering one opening and a part for covering at least two openings.Type: GrantFiled: October 4, 2006Date of Patent: September 13, 2011Assignee: Advics Co., Ltd.Inventors: Yasuhito Sekihara, Shin Sasaki
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Publication number: 20070092361Abstract: A hydraulic unit is provided with a housing having two planar portions neighboring at a predetermined angle between them. At least one opening is formed on each of the planar portions. For example, one opening and at least two openings are formed on the two planar portions, respectively. A protective tape is adhered to the two planar portions of the housing for covering each opening formed on each of the two planar portions. The protective tape is cut by a laser beam, for example, to be separated into at least each one of a part for covering one opening and a part for covering at least two openings.Type: ApplicationFiled: October 4, 2006Publication date: April 26, 2007Inventors: Yasuhito Sekihara, Shin Sasaki
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Patent number: 7044751Abstract: A first electronic control unit (10) provided with a printed circuit board (13) and a second electronic control unit (E) having pressure sensors (30) mounted therein can be assembled with each other. Intermediate connectors (40) are mounted in the first electronic control unit (10), and terminal fittings (42) are accommodated therein. Each terminal fitting (42) is provided with a board-side connecting portion (53) to be soldered to the printed circuit board (13) and a resilient contact piece (51) to be resiliently brought into contact with a terminal portion (32) of the pressure sensor (30).Type: GrantFiled: August 5, 2004Date of Patent: May 16, 2006Assignees: Sumito Wiring Systems, Ltd., ADVICS Co., Ltd.Inventors: Hitoshi Takanashi, Takao Tsunooka, Yasuhito Sekihara
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Patent number: 6969128Abstract: A hydraulic brake device includes a master cylinder supplying pressurized fluid to plural brakes which respectively restrict the rotations of road wheels, a solenoid block mounted on the master cylinder and containing plural solenoid valves, and an ECU provided with a control board for controlling the solenoid valves to distribute pressurized fluid to the plural brakes and also provided with a case for containing the control board therein. The solenoid block and the ECU form an integrated structure, and the integrated structure composed of the solenoid block and the ECU is removably mounted on the master cylinder. Further, the ECU is secured to the solenoid block by screw bolts which are arranged within an area inside the external form of the control board. Thus, it becomes unnecessary to provide bolt seats for the screw bolt outside the case.Type: GrantFiled: October 21, 2003Date of Patent: November 29, 2005Assignee: Advics Co., Ltd.Inventor: Yasuhito Sekihara
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Publication number: 20050032402Abstract: A first electronic control unit (10) provided with a printed circuit board (13) and a second electronic control unit (E) having pressure sensors (30) mounted therein can be assembled with each other. Intermediate connectors (40) are mounted in the first electronic control unit (10), and terminal fittings (42) are accommodated therein. Each terminal fitting (42) is provided with a board-side connecting portion (53) to be soldered to the printed circuit board (13) and a resilient contact piece (51) to be resiliently brought into contact with a terminal portion (32) of the pressure sensor (30).Type: ApplicationFiled: August 5, 2004Publication date: February 10, 2005Applicants: Sumitomo Wiring Systems, Ltd., ADVICS CO., LTD.Inventors: Hitoshi Takanashi, Takao Tsunooka, Yasuhito Sekihara
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Patent number: 6779990Abstract: A bearing mechanism comprises a shaft rotatably supported by a bearing accommodated in a cylindrical bearing accommodating portion. The shaft is applied with varying load in response to a slidable movement of a pair of pistons so as to be displaced in a direction. The bearing is displaced corresponding to the displacement of the shaft being applied with the varying load. The bearing mechanism further comprises a biasing means. The biasing means biases the bearing to be always in contact with at least a portion of an inner peripheral surface of the cylindrical bearing accommodating portion in the other direction different from the direction in which the bearing is displaced in accordance with the varying load.Type: GrantFiled: February 19, 2002Date of Patent: August 24, 2004Assignees: Aisin Seiki Kabushiki Kaisha, Advics Co., Ltd.Inventors: Yasuhito Sekihara, Akinori Okuya, Satosi Kaminaka, Akihiro Yokoyama
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Publication number: 20040113488Abstract: A hydraulic brake device is provided with a master cylinder for supplying pressurized fluid to plural brakes which respectively restrict the rotations of road wheels, a solenoid block mounted on the master cylinder and containing plural solenoid valves, and an ECU provided with a control board for controlling the solenoid valves to distribute pressurized fluid to the plural brakes and also provided with a case for containing the control board therein. The solenoid block and the ECU are constructed to be an integrated structure, and the integrated structure composed of the solenoid block and the ECU is removably mounted on the master cylinder. Further, the ECU is secured to the solenoid block by means of screw bolts which are arranged within an area insider the external form of the control board. Thus, it becomes unnecessary to provide bolt seats for the screw bolt outside the case, so that the case and hence, the ECU can be miniaturized.Type: ApplicationFiled: October 21, 2003Publication date: June 17, 2004Applicant: ADVICS CO., LTD.Inventor: Yasuhito Sekihara
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Publication number: 20030021709Abstract: A plunger pump device includes a housing defining a compression chamber, a plunger slidably accommodated in the housing and exposed to the compression chamber at one end, a drive cam for reciprocating the plunger, a discharge valve connected to the compression chamber, an intake valve connected to the compression chamber, and a low-pressure reservoir for accommodating fluid with a predetermined pressure or more connected to the compression chamber through the intake valve. Even if the intake valve is in a closed position, a small amount of the fluid is discharged from the compression chamber into the low-pressure reservoir side through a slit formed on the intake valve. The small amount of the fluid discharged through the slit is accommodated in a capacity space under a small pressure.Type: ApplicationFiled: July 18, 2002Publication date: January 30, 2003Inventors: Akinori Okuya, Yasuhito Sekihara, Akihiro Yokoyama
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Publication number: 20020119057Abstract: A bearing mechanism comprises a shaft rotatably supported by a bearing accommodated in a cylindrical bearing accommodating portion. The shaft is applied with varying load in response to a slidable movement of a pair of pistons so as to be displaced in a direction. The bearing is displaced corresponding to the displacement of the shaft being applied with the varying load. The bearing mechanism further comprises a biasing means. The biasing means biases the bearing to be always in contact with at least a portion of an inner peripheral surface of the cylindrical bearing accommodating portion in the other direction different from the direction in which the bearing is displaced in accordance with the varying load.Type: ApplicationFiled: February 19, 2002Publication date: August 29, 2002Inventors: Yasuhito Sekihara, Akinori Okuya, Satosi Kaminaka, Akihiro Yokoyama
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Patent number: 6264287Abstract: A hydraulic brake apparatus for a vehicle includes a first hydraulic passage for supplying pressurized brake fluid from a master cylinder to wheel brakes without passing through a hydraulic pump, a first opening and closing electromagnetic valve interposed in the first hydraulic passage for opening and closing the first hydraulic passage, a second hydraulic passage for supplying brake fluid from the master cylinder to the suction side of the hydraulic pump, and a second opening and closing electromagnetic valve interposed in the second hydraulic passage for opening and closing the second hydraulic passage. A passage cross sectional adjusting valve is interposed in the second hydraulic passage and decreases the passage cross sectional area of the second hydraulic passage to suppress the transmission of a hydraulic pulsation generated in a suction side of the hydraulic pump to the master cylinder when the brake pedal is depressed.Type: GrantFiled: April 22, 1999Date of Patent: July 24, 2001Assignee: Aisin Seiki Kabushiki KaishaInventor: Yasuhito Sekihara
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Patent number: 5538335Abstract: The hydraulic brake system for a vehicle which can perform anti-lock control includes a brake circuit for connecting a master cylinder to wheel brakes, a control valve circuit for decreasing hydraulic brake pressure in the wheel brake by discharging brake fluid from the wheel brake to a reservoir, a plunger pump driven by an electric motor for returning brake fluid from the reservoir to the brake circuit and a slit formed on at least the discharge valve seat or the suction valve seat of the pump unit for evacuating the pump chamber of the plunger pump. The hydraulic brake system can further include a one-way valve which permits communication between the pressure chamber of the pump with the reservoir for evacuation.Type: GrantFiled: July 28, 1995Date of Patent: July 23, 1996Assignee: Aisin Seiki Kabushiki KaishaInventors: Tadao Saito, Yasuhito Sekihara, Hiroyuki Hattori, Hirohisa Kuwana, Hiroshi Toda, Ryuji Takagaki