Patents by Inventor Kenji Okamura
Kenji Okamura 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: 6019646Abstract: A resilient contact 11 rise upwards diagonally towards the open end of an electrical terminal. A supporting member 11b is formed by folding an end of the contact 11 downwards and making the end of this folded over portion make contact with the base face of the protecting cover B. By these means, even if the point of contact is set towards the open end, the contact force can be maintained, and the rising member 11a is supported by the supporting member 11b when bending.Type: GrantFiled: July 28, 1997Date of Patent: February 1, 2000Assignee: Sumitomo Wiring Systems, Ltd.Inventors: Kenji Okamura, Yoshimasa Wada, Hiroyuki Oka
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Patent number: 5975214Abstract: A working machine control device for construction machinery provided with a plurality of joined working arms, an attachment mounted to the leading end of the working arms and a plurality of actuators for driving the working arms and the attachment, includes a function to adjust a pushing force between the attachment and a working plane by automatically controlling at least one of the actuators. The control device also includes a load detecting unit for detecting a load applied from the working plane to the attachment, working machine posture detecting devices for detecting postures of the working arms and the attachment and a computing unit for computing the pushing force between the attachment and the working plane on the basis of output values from the load detecting unit and the working machine posture detecting devices. The computing unit outputs a component of the pushing force in a direction perpendicular to the working plane.Type: GrantFiled: January 27, 1998Date of Patent: November 2, 1999Assignee: Komatsu, Ltd.Inventors: Kenji Okamura, Hiroshi Yoshinada, Kunikazu Yanagi, Naritoshi Ohtsukasa
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Patent number: 5951336Abstract: A protecting cover B is provided for a miniature terminal, the upper face having a lance 41 formed by shearing. This lance 41 has a pair of protecting members 42 located in the posterior side thereof, the posterior edges of the protecting members 42 being cut so as to form diagonal edges with respect to the direction of extension of the lance 41. In this way, a portion of the bending space formed under the lance 41 is surrounded by the protecting member 42, thereby preventing entry of foreign matter. As a result, bending and entanglement can be prevented. The cover may have a protruding wall 43 to provide additional protection against external forces.Type: GrantFiled: July 22, 1997Date of Patent: September 14, 1999Assignee: Sumitomo Wiring Systems, Ltd.Inventors: Satomi Seko, Masamitsu Chishima, Kenji Okamura, Yoshimasa Wada, Hiroyuki Oka
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Patent number: 5949686Abstract: The present invention relates to a master/slave manipulator and a method for controlling the same, in which a large working area and good controllability can be provided and a corresponding position shift and an enlargement ratio change can also be attained. To this end, a plurality of representing points are set on and inside a closed surface (A1) of an operating area (A) of one manipulator, while a plurality of target points corresponding to the plurality of representing points are set on and inside a closed surface (B1) of a working area (B) of the other manipulator. Working amounts (.beta.1, .beta.2, .theta.1, .theta.2) when the leading ends (11, 12) of the one manipulator and the other manipulator respectively reach the plurality of representing points and the plurality of target points, and a corresponding relationship between the working amounts of the two manipulators are obtained; and when the slave (2) is to be operated, the working amounts (.beta.1, .beta.Type: GrantFiled: March 20, 1997Date of Patent: September 7, 1999Assignee: Komatsu Ltd.Inventors: Hiroshi Yoshinada, Kenji Okamura, Kunikazu Yanagi
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Patent number: 5921821Abstract: A protective cover B of an electrical terminal is partitioned into an upper cover 50 and a lower cover 40. By doing this, the upper cover 50 and the lower cover 40 can be simultaneously bent prior to fitting. The upper cover 50 has its left and right edges bent perpendicular downwards, the left and right side plates having supporting holes 54 formed thereon. The lower cover 40 has a pair of fitting members 41 and crimping members 42 protruding therefrom, the fitting members 41 having supporting protrusions 43,44 fitting with the supporting holes 54,15 formed on the upper cover 50 and the terminal main body A.Type: GrantFiled: July 29, 1997Date of Patent: July 13, 1999Assignee: Sumitomo Wiring Systems, Ltd.Inventors: Hiroyuki Oka, Naoya Kurimoto, Yoshimasa Wada, Kenji Okamura, Masahiro Hiratani
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Patent number: 5758931Abstract: A connecting structure for connecting the connector terminal unit with the printed mounting board in which the degree of freedom is high with respect to the attaching posture and attaching position of the connector terminal unit, and further the error allowed in the manufacturing process of the printed mounting board and the error allowed in the assembling process of the printed mounting board to the case may be increased. An auxiliary wiring board is electrically connected onto a reverse side of a connector terminal arranged penetrating the connector terminal unit, and also the auxiliary wiring board is electrically connected onto the printed mounting board by FPC (flexible printed circuit board). The attaching posture and attaching position of the connector terminal unit can be arbitrarily determined in a range of the length of FPC.Type: GrantFiled: March 27, 1996Date of Patent: June 2, 1998Assignees: Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.Inventors: Masahide Hio, Kenji Okamura, Hitoshi Hashiba
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Patent number: 5691229Abstract: A cylindrical storage node electrode increases the surface area and, accordingly, the capacitance of a storage capacitor of a dynamic random access memory cell, and a silicon nitride layer is used as an etching stopper which is removed before completion of the storage capacitor so that hydrogen surely cures crystal defects during a hydrogen treatment carried out after patterning metal wirings.Type: GrantFiled: January 16, 1997Date of Patent: November 25, 1997Assignee: NEC CorporationInventors: Kenji Okamura, Masanobu Zenke
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Patent number: 5662487Abstract: A connector includes a connector housing and a branched joint terminal for branching a primary line to a plurality of secondary lines. The connector housing has a plurality of terminal housing extending parallel to each other and opening at the front side for accommodating one terminal connected to the primary line or to the secondary line (5B). The connector housing is provided with grooves extending between the side walls thereof and crossing the terminal housing. Thus extended formed groove is also opened at the front side for receiving the joint terminal therein. When joint terminal is placed in the groove, the first and second terminals accommodated in the terminal housing are electrically connected through the joint terminal so that the primary line is branched and connected to the secondary terminals.Type: GrantFiled: November 22, 1995Date of Patent: September 2, 1997Assignee: Sumitomo Wiring Systems, Ltd.Inventors: Kenji Okamura, Shigeki Murayama, Masamitsu Chishima, Yutaka Noro
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Patent number: 5521126Abstract: A method of fabricating a semiconductor device includes the steps of forming a wiring layer on the surface of a semiconductor substrate, depositing a silicone film on the whole surface of the semiconductor substrate including the wiring layer by a CVD method and exposing the silicone film to oxidative plasma with enhanced frequencies including components of 1 MHz or less to change to a silicon oxide film, the depositing step and exposing step being alternately repeated in the same apparatus till the silicon oxide film having any desired thickness is obtained. The resulting silicon oxide film has the smooth surface and the high density.Type: GrantFiled: June 22, 1994Date of Patent: May 28, 1996Assignee: NEC CorporationInventors: Kenji Okamura, Masanobu Zenke, Yasuhide Den
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Patent number: 5496188Abstract: A connector includes a connector housing and a branched joint terminal for branching a primary line to a plurality of secondary lines. The connector housing has a plurality of terminal housing extending parallel to each other and opening at the front side for accommodating one terminal connected to the primary line or to the secondary line (5B). The connector housing is provided with grooves extending between the side walls thereof and crossing the terminal housing. Thus extended formed groove is also opened at the front side for receiving the joint terminal therein. When joint terminal is placed in the groove, the first and second terminals accommodated in the terminal housing are electrically connected through the joint terminal so that the primary line is branched and connected to the secondary terminals.Type: GrantFiled: December 6, 1993Date of Patent: March 5, 1996Assignee: Sumitomo Wiring Systems, Ltd.Inventors: Kenji Okamura, Shigeki Murayama, Masamitsu Chishima, Yutaka Noro
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Patent number: 5114455Abstract: A mold for use in producing a lens comprises a pair of first and second mold portions which are arranged in opposed relation to each other. At least one of the first and second mold portions is movable toward and away from the other. Molding surfaces of the respective first and second mold portions have their respective areas which are located radially outwardly of an effective aperture of the lens. A plurality of recesses are formed in the molding surface of at least one of the first and second mold portions and are located in the area of the molding surface of the at least one mold portion. These recesses separate the lens from the molds.Type: GrantFiled: January 17, 1991Date of Patent: May 19, 1992Assignee: Hoya CorporationInventors: Shinichiro Hirota, Kishio Sugawara, Kenji Okamura
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Patent number: 4976529Abstract: A shape memory alloy is used for face-contacting parts (1, 3, 4, 5; 101) and lens-fixing parts (2) of a spectacle frame, and parts (12, 13; 103) connected thereto are formed of titanium, a titanium alloy, nickel, or a chromium alloy. These parts are suitable soldered by a soldering material (111) formed of 5-15 wt. % of palladium, 5-15 wt. % of gallium, and a balance consisting of silver.Type: GrantFiled: April 13, 1989Date of Patent: December 11, 1990Assignee: Sigma Co., Ltd.Inventors: Kazuo Segoshi, Toshiyuki Okuda, Kenji Okamura, Mizuo Yoshida
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Patent number: 4961103Abstract: A semiconductor device having a silicon resistor element is disclosed. The silicon resistor element includes a first polycrystalline silicon film containing oxygen atoms with a low density, and a second polycrystalline silicon film disposed on the first polycrystalline silicon film and containing oxygen atoms with a high density. A silicon oxide film converted from polycrystalline silicon is attached to the top surface of the second polycrystalline silicon film.Type: GrantFiled: November 23, 1988Date of Patent: October 2, 1990Assignee: NEC CorporationInventors: Manzoh Saitoh, Kenji Okamura
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Patent number: 4953966Abstract: A spectacle frame comprises a face-contacting portion such as a side and a lens-fixing portion such as a rim, both the portions being made of a shape memory alloy, and connecting members to be connected with the face-contacting portion and the lens-fixing portion. The connecting member is made of a titanium alloy, preferably .beta.-phase. The face-contacting portion and the lens-fixing portion are soldered to the connecting member with a palladium-based soldering material.Type: GrantFiled: January 6, 1989Date of Patent: September 4, 1990Assignee: Sigma Co., Ltd.Inventors: Kazuo Segoshi, Toshiyuki Okuda, Kenji Okamura, Mizuo Yoshida
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Patent number: 4781653Abstract: A power transmission device for a motor vehicle having an engine with a crankshaft and a transmission with a transmission input shaft, comprises spiral spring assembly which provides a torque transmission connection between the crankshaft and the transmission input shaft. The assembly includes a plurality of spiral springs operative to be deformed responsive to torsional force applied thereto during the torque transmission. A vibration damper is mounted to damp vibration caused by the above mentioned torque transmission.Type: GrantFiled: December 23, 1985Date of Patent: November 1, 1988Assignee: Nissan Motor Co., Ltd.Inventors: Koyo Nakamura, Yukihiro Etoh, Kenji Okamura, Yoshiji Shimaoka
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Patent number: 4613643Abstract: A process for the preparation of soft porous sheets, comprises forming into a sheet a composition comprising (i) 40 to 80% by weight of an inorganic filler and (ii) 60 to 20% by weight of a polyolefin type thermoplastic elastomer composition comprising at least 50% by weight of a polyolefin type thermoplastic elastomer substantially free of a polar group, in which the tensile stress at a temperature of 25.degree. C. under 100% stretching (100% modulus) is 10 to 100 Kg/cm.sup.2, the elongation at break under stretching is at least 100% and the permanent strain under 100% stretching is less than 50% and up to 50% by weight of a thermoplastic plastomer, and stretching the sheet at a temperature lower than the softening temperature of the polyolefin type thermoplastic elastomer. A porous sheet obtained according to this process has a good combination of flexibility, air permeability and water resistance.Type: GrantFiled: February 9, 1984Date of Patent: September 23, 1986Assignee: Tokuyama Soda Kabushiki KaishaInventors: Shunichi Nakamura, Kenji Okamura, Shingo Kaneko, Kiyoshi Sumi
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Patent number: 4507986Abstract: A control system for a motor vehicle is disclosed wherein the parameters for optimum operation for an engine are determined based upon an acceleration position and a vehicle speed, and a continuously variable transmission is operated to vary a drive ratio in such a manner as to cause the engine to operate according to those parameters.Type: GrantFiled: February 22, 1982Date of Patent: April 2, 1985Assignee: Nissan Motor Company, LimitedInventors: Kenji Okamura, Hatsuo Nagaishi, Tsuyoshi Kitahara, Kohki Sone, Koyo Nakamura
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Patent number: 4479866Abstract: A gas sensor, e.g. oxygen sensor of the solid electrolyte concentration cell type, having a gas-sensitive element comprising a plate-shaped substrate fixed to an end portion of the sensor body and a laminate of relatively thin layers. A hollow cylindrical protective hood is attached to the sensor body to enclose the sensitive element therein, and two or more openings are formed in the cylindrical wall of the hood to allow a gas subject to measurement to flow into the interior of the hood and flow out. To avoid direct exposure of the sensitive element, which exhibits directionality in its output characteristics with regard to the gas flow through said openings, each of said openings is located between the sensitive element and the free end of the hood such that a cross-sectional plane intersecting the openings does not intersect the sensitive element.Type: GrantFiled: October 3, 1983Date of Patent: October 30, 1984Assignee: Nissan Motor Company, LimitedInventors: Kohki Sone, Hatsuo Nagaishi, Hidehiro Minami, Kenji Okamura, Yoshitaka Kitagasaki
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Patent number: 4363306Abstract: A system for feedback control of air/fuel ratio in an internal combustion engine, utilizing an oxygen-sensitive air/fuel ratio detector disposed in an exhaust gas to provide a feedback signal is disclosed. The detector has a flat and microscopically porous solid electrolyte layer with a measurement electrode layer on one side and a reference electrode layer on the other side facing a substrate. The control system includes a current supplying circuit to force a DC current to flow in the solid electrolyte layer between the two electrode layers to cause migration of oxygen ions through the solid electrolyte layer from the measurement electrode toward the reference electrode to thereby establish a reference oxygen partial pressure at the interface between the reference electrode layer and the solid electrolyte layer.Type: GrantFiled: September 26, 1980Date of Patent: December 14, 1982Assignee: Nissan Motor Co., Ltd.Inventors: Kohki Sone, Kenji Okamura, Toyoaki Nakagawa
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Patent number: 4359030Abstract: A system for feedback control of air/fuel ratio in an IC engine, utilizing an oxygen-sensitive device which is provided with a heater and disposed in exhaust gas to provide a feedback signal. This device has a porous solid electrolyte layer with an outer electrode layer on one side and an inner electrode on the other side facing a substrate. There is a circuit to supply a heating current to the heater and also force a DC current to flow in the solid electrolyte layer to cause migration of oxygen ions therethrough toward the inner electrode to thereby establish a reference oxygen partial pressure on the inner side of the solid electrolyte layer.Type: GrantFiled: October 22, 1980Date of Patent: November 16, 1982Assignee: Nissan Motor Company, LimitedInventors: Kohki Sone, Kenji Okamura