Patents by Inventor Katsuhisa Mori
Katsuhisa Mori 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: 6119803Abstract: In a power steering apparatus having a control valve with a first control valve portion and a second control valve portion to enhance rigidity of a steering operation, an amount of an overlapping portion of an overlap variable orifice is designed larger than an amount of an unlapping portion of an untapped variable orifice in the control valve because of dispersion during manufacture. When the overlap variable orifice finishes overlapping, the unlapped variable orifice has already started unlapping. Therefore, since the overlap variable orifice and the unlapped variable orifice never become unlapping form simultaneously regardless of the dispersion, the control valve is capable of minimizing a difference of the flow between a plurality of the second control valve portion. As a result, the power steering apparatus relative to the invention prevents enlargement of noise caused by an unbalance of the flow between a plurality of the second control valve portions in the control valve.Type: GrantFiled: July 31, 1997Date of Patent: September 19, 2000Assignee: Toyoda Koki Kabushiki KaishaInventors: Mikio Suzuki, Katsuhisa Mori, Hiroshi Suzuki
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Power steering system including a rotary control valve with multiple variable orifice configurations
Patent number: 5845737Abstract: In a power steering apparatus comprising a pump, a reservior, a power cylinder having two opposite chambers, and a rotary control vale, the rotary control valve consists of a first control portion which communicates between the pump and the reservior, and a second control portion which communicates not only between the pump and the reservior but also with the power cylinder. In the first control portion, each of four underlapping variable orifices is so provided as to take the form of underlap in itself. In the second control portion, two underlapping variable orifices are provided on the side of the pump, and besides each of two overlapping variable orifices is so provided as to take the form of overlap in itself on the side of the reservior. In this manner, while a steering wheel is operated within a predetermined angle, an opening area of the overlapping variable orifice changes little.Type: GrantFiled: January 19, 1996Date of Patent: December 8, 1998Assignee: Toyoda Koki Kabushiki KaishaInventors: Mikio Suzuki, Katsuhisa Mori, Hideaki Sugiyama -
Patent number: 5819570Abstract: A crimping station of a motor-driven portable crimper (A) has a movable head driven by a motor (M) to reciprocate straight towards and away from a fixed anvil. An automatic switch will automatically stop the motor upon detection of the movable head retracted from or having approached the anvil, so that the head and other members stand still for a while relative to the fixed anvil to allow the wire end to be inserted readily into the contact and then the contact thus crimped can easily be withdrawn from the crimping station. A manual switch is operable to restart the motor and resume the crimping process. A blind plate attached to and outside the frame is disposed near the crimping station so as to inhibit a user from erroneously inserting wire ends to the contacts which have not arrived at the station.Type: GrantFiled: October 24, 1997Date of Patent: October 13, 1998Assignee: Nichifu Terminal ManufactureInventors: Katsuhisa Mori, Yoshihiro Nakagome, Yuji Nakajima
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Patent number: 5638912Abstract: A power steering apparatus is composed a fluid source for discharging pressurized fluid, a power cylinder, a control valve responsive to operation of a steering wheel for supplying the power cylinder with pressurized fluid from the fluid source, and a reservoir. The control valve has a first control portion for controlling the flow of pressurized fluid from the fluid source to the reservoir, and a second control portion for controlling the flow of pressurized fluid to the power cylinder. The first control portion has four paths communicating with the fluid source and the reservoir, and each of the four paths is formed with a center-open variable orifice which opens when the control valve is in a neutral state.Type: GrantFiled: November 10, 1994Date of Patent: June 17, 1997Assignee: Toyoda Koki Kabushiki KaishaInventors: Kyosuke Haga, Mikio Suzuki, Katsuhisa Mori
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Patent number: 5538095Abstract: A power steering apparatus comprises a fluid source for supplying pressurized fluid, a power cylinder having a pair of fluid chambers, a control valve, and a drain control mechanism. The control valve is composed of first and second control portions. The first control portion has four paths connecting the fluid source and the reservoir, and each of the four paths is formed with a variable orifice of center-open type. The second control portion has two supply paths communicating the fluid source with the fluid chambers of the power cylinder, each of the supply paths being formed with a variable orifice of center-open type, and two drain paths communicating the fluid chambers with the reservoir, each of the drain paths being formed with a variable orifice of center-closed type.Type: GrantFiled: June 13, 1995Date of Patent: July 23, 1996Assignee: Toyoda Koki Kabushiki KaishaInventors: Kyosuke Haga, Mikio Suzuki, Katsuhisa Mori
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Patent number: 5515938Abstract: A power steering apparatus having a fluid source for discharging pressurized fluid, a power cylinder, a control valve responsive to operation of a steering wheel for supplying the power cylinder with pressurized fluid from the fluid source, and a reservoir. The control valve has a first control portion for controlling the flow of pressurized fluid from the fluid source to the reservoir, and a second control portion for controlling the flow of pressurized fluid to the power cylinder. The first control portion has two paths connecting the fluid source and the reservoir, each of the paths being formed with at least one variable orifice of a center-open type which opens when the control valve is in a neutral state.Type: GrantFiled: October 21, 1993Date of Patent: May 14, 1996Assignee: Toyoda Koki Kabushiki KaishaInventors: Kyosuke Haga, Mikio Suzuki, Yoshiharu Inaguma, Kenichi Fukumura, Hideya Kato, Katsuhisa Mori
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Patent number: 5439070Abstract: A power steering apparatus having a hydraulic pump for outputting a pressurized fluid, an assist force generation mechanism hydraulically connected to the pump through a supply passage to generate an assist force in response to rotation of a steering wheel, wherein the assist force generation mechanism has a characteristic that the back pressure thereof increases when the steering wheel is rotated. The power steering apparatus further comprises a flow control valve having a spool which is moved in response to a pressure drop at a metering orifice disposed in the middle of the supply passage, so as to control the flow rate of the pressurized fluid to be constant.Type: GrantFiled: June 11, 1993Date of Patent: August 8, 1995Assignee: Toyoda Koki Kabushiki KaishaInventors: Kyosuke Haga, Mikio Suzuki, Yoshiharu Inaguma, Kenichi Fukumura, Hideya Kato, Katsuhisa Mori
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Patent number: 5210923Abstract: A method for attaching a wire-identifying tab to an electric wire end, the tab comprising a marking portion having identification mark and being a cylinder having a slit extending axially over the full length of the tab, the method comprising the steps of engaging the tab with a pair of rigid sheets in contact with each other at their upper portions, from their one ends and in parallel with them, subsequently inserting the wire end into the tab while the pair of sheets are displaced apart from each other perpendicular to the tab, and finally disengaging the sheets from the tab, thus fitting an outer surface of the wire end in the tab.Type: GrantFiled: November 15, 1991Date of Patent: May 18, 1993Assignee: Nichifu Terminal Manufacture Co., Ltd.Inventors: Katsuhisa Mori, Hideo Miyata
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Patent number: 5187887Abstract: An electric wire-identifying tab comprises a flat main plate made of plastics, a pair of flexible lugs protruding from the main plate and of a shape adapted to grip a wire end, a clearance formed between edges of the lugs, the edges extending parallel with the main plate, and an extensive cutout formed at an end portion of the clearance, the cutout guiding juxtaposed edges of tab-mounting holders in an apparatus constructed to automatically attach the tabs on the wire ends. A continuous band comprises a plurality of the wire-identifying tabs which are connected together by joining portions so that the band is fed continuously to the apparatus.Type: GrantFiled: January 15, 1991Date of Patent: February 23, 1993Assignee: Nichifu Terminal Manufacture Co., Ltd.Inventors: Katsuhisa Mori, Keiji Sonoda, Hideo Miyata, Yukinobu Okazaki
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Patent number: 5092030Abstract: A method for attaching a wire-identifying tab to an electric wire end, the tab comprising a marking portion having identification mark and being a cylinder having a slit extending axially over the full length of the tab, the method comprising the steps of engaging the tab with a pair of rigid sheets in contact with each other at their upper portions, from their one ends and in parallel with them, subsequently inserting the wire end into the tab while the pair of sheets are displaced apart from each other perpendicular to the tab, and finally disengaging the sheets from the tab, thus fitting an outer surface of the wire end in the tab.Type: GrantFiled: December 27, 1990Date of Patent: March 3, 1992Assignee: Nichifu Terminal Manufacture Co., Ltd.Inventors: Katsuhisa Mori, Hideo Miyata
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Patent number: 4799514Abstract: A rotary servovalve includes a valve sleeve formed with a supply port for connection to a source of fluid under pressure and distribution ports respectively for connection to opposite fluid chambers of a hydraulic power cylinder, the valve sleeve being formed at the inner periphery thereof with circumferentially spaced sleeve channels respectively in open communication with the supply and distribution ports, and a valve rotor coupled with the valve sleeve for relative rotation thereto, the valve rotor being formed thereon with circumferentially spaced control lands which are arranged to correspond with the sleeve channels when the servovalve is in a neutral position.Type: GrantFiled: March 25, 1988Date of Patent: January 24, 1989Assignee: Toyoda Koki Kabushiki KaishaInventors: Tsuneo Tanaka, Katsuhisa Mori
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Patent number: D333491Type: GrantFiled: October 24, 1990Date of Patent: February 23, 1993Assignee: Nichifu Terminal Manufacture Co., Ltd.Inventors: Katsuhisa Mori, Keiji Sonoda, Hideo Miyata
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Patent number: D336929Type: GrantFiled: July 31, 1990Date of Patent: June 29, 1993Assignee: Nichifu Terminal Manufacture Co., Ltd.Inventors: Katsuhisa Mori, Keiji Sonoda, Hideo Miyata
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Patent number: D336930Type: GrantFiled: October 24, 1990Date of Patent: June 29, 1993Assignee: Nichifu Terminal Manufacture Co., Ltd.Inventors: Katsuhisa Mori, Keiji Sonoda, Hideo Miyata
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Patent number: D338240Type: GrantFiled: October 24, 1990Date of Patent: August 10, 1993Assignee: Nichifu Terminal Manufacture Co., Ltd.Inventors: Katsuhisa Mori, Keiji Sonoda, Hideo Miyata
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Patent number: D338688Type: GrantFiled: October 24, 1990Date of Patent: August 24, 1993Assignee: Nichifu Terminal Manufacture Co., Ltd.Inventors: Katsuhisa Mori, Keiji Sonoda, Hideo Miyata