Patents by Inventor Yasuo Matsushita

Yasuo Matsushita 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).

  • Patent number: 6126468
    Abstract: Retaining members are formed separately from a female connector housing and can be installed on the female connector housing. A sealing member is installed within the female connector housing prior to the installation of the retaining members. The sealing member includes protrusions having retaining portions, which protrusions are inserted into guide channels of the female connector housing without bending. Then, the retaining members are installed on the female connector housing, and two protrusions of the retaining members engage with the retaining portions from opposite sides, whereby the sealing member is retained against removal. When the sealing members are installed, the protrusions and retaining portions are not elastically deformed, and therefore resistance during installation is reduced, and the installation can be easily carried out.
    Type: Grant
    Filed: January 16, 1998
    Date of Patent: October 3, 2000
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Yasuo Matsushita, Kazunori Yamashita, Mitsuhiro Fujitani
  • Patent number: 6059598
    Abstract: A connector is provided in order to enhance a tactile sensation by providing a restoring force to a lock piece and further to attain an original locking function at the fitting of both a male and female connector housing. A dome covering the upper edge of a lock piece is formed on a female housing, and an arm which protrudes rearwardly and which can be elastically deformed is affixed to the dome. A projecting contact part protrudes downwardly at the end of the arm and closely contacts the upper edge of the lock piece. When the male and female housings are interfitted, a gaff part on the lock piece engages a protrusion on the male housing and swings upwardly, and in accordance with it, elastically deforms the arm by pushing the projecting contact part. When the male and female housings are normally interfitted, the lock piece restores to its original position and is locked by engagement of the gaff part with the backside of the protrusion.
    Type: Grant
    Filed: February 25, 1998
    Date of Patent: May 9, 2000
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Kazunori Yamashita, Yasuo Matsushita, Hiroki Osawa
  • Patent number: 5980331
    Abstract: A connector assembly having a receiving housing, a fitting housing and a retainer. The fitting housing is inserted into the receiving housing and is held in engagement position by the retainer. However, if one or more electrical terminals, within cavities in the fitting housing, is not fully inserted into its locked position, the retainer is held in a temporary position wherein a portion thereof projects outwardly of the fitting housing. This portion engages the end face of the receiving housing. The end face is preferably perpendicular to the insertion direction or at an acute angle thereto. As a result, the receiving housing does not distort even if excessive insertion force is applied to the fitting housing and/or the retainer.
    Type: Grant
    Filed: July 11, 1997
    Date of Patent: November 9, 1999
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Yasuo Matsushita, Mitsuhiro Fujitani
  • Patent number: 5876232
    Abstract: An inertia locking connector including elements which provide resistance to fitting the male and female connectors together. A consistent operating feel is obtained, even if the locking arm is released by the user. A resistance arm, independent of the locking arm, engages a rib of the male connector. A detent which is engaged by the locking arm is located on the same surface of the male connector as is the rib. The latter acts as a temporary stop for the resistance arm. Therefore, the user must exert substantial increased pressure to cause the resistance arm to flex out of contact with the leading edge thereof. As a result, the increased force builds momentum in the moving connectors so that the locking arm rides positively over the detent into its proper locking position.
    Type: Grant
    Filed: April 23, 1997
    Date of Patent: March 2, 1999
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Yasuo Matsushita, Mitsuhiro Fujitani
  • Patent number: 5650591
    Abstract: This invention aims to provide a waterproof casing which can keep its waterproof function under a great change of temperature. In the waterproof casing, a lid (20) which covers an opening in a body (10) is provided with a pipe (24) which intercommunicates an interior and an exterior of the casing. A porous waterproof filter (25) closes a port (24a) in the pipe (24). Air in the body (10) is expanded and contracted under changes in temperature. However, only air can pass through the filter (25) into and out of the body (10) with water being precluded, thereby waterproofing the interior of the casing.
    Type: Grant
    Filed: October 31, 1996
    Date of Patent: July 22, 1997
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Yasuo Matsushita, Tatsuya Sumida
  • Patent number: 5632638
    Abstract: In a card edge connector, rotating pins are formed on the inner surfaces of the side walls of a box-shaped outer housing, while cylindrical bearings are formed on the outer surfaces of the side walls of inner housings in which electrically conductive terminals are accommodated. The inner housings are swingably held with the rotating pins engaged with the cylindrical bearings. The cylindrical bearings have cut-outs in the cylindrical walls which are opened in the direction of insertion, so that, as the inner housings are pushed into the outer housing, the rotating pins are engaged with the cylindrical bearings through the cut-outs. The inner housings are urged by spring members in such a manner that the abutting parts of the terminals are moved away from terminals formed on the connecting end portion of a printed circuit board. When the connecting end portion of the printed circuit board starts to enter the outer housing is started, the connecting end portion gently touches the abutting parts of the terminals.
    Type: Grant
    Filed: June 23, 1994
    Date of Patent: May 27, 1997
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Yasuo Matsushita, Hisashi Konoya, Mitsuhiro Fujitani
  • Patent number: 5629495
    Abstract: A waterproof box-like casing including, a box-like body having an opening, a lid for closing the opening and having a communication hole, and a bulkhead member for covering the communication hole hermetically. The communication hole provides communication between the inside and outside of the box-like body. Furthermore, the bulkhead member expands volume when the air inside of the waterproof box-like casing expands because of thermal expansion and contracts volume when the air inside of the waterproof box-like casing contracts because of thermal contraction.
    Type: Grant
    Filed: February 16, 1994
    Date of Patent: May 13, 1997
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Tatsuya Sumida, Yasuo Matsushita, Yuichi Akiyama
  • Patent number: 5573415
    Abstract: A card edge connector includes inner housings that accommodate electrically conducting terminals. The inner housings are rotatably supported within a box-like outer housing. A rotatable range is regulated by projected portions of the respective housings being abutted against each other, so that an opening of the outer housing is kept open to allow an end portion of a printed board to be inserted. In addition, the terminals do not come in contact with each other, so that the circuit is kept from being shorted. When the insertion of the end portion into the outer housing is started, the upper inner housing rides over the end portion slightly. However, as the end portion is further inserted to the depth of the outer housing, introducing cams formed on a hood enclosing the end portion cause the upper inner housing to rotate with a slight insertion force, thereby causing the terminals to be urged into full engagement with the end portion of the printed board.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: November 12, 1996
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Mitsuhiro Fujitani, Yasuo Matsushita
  • Patent number: 5507659
    Abstract: A first connector is installed on an upper surface of a printed wiring board. A plurality of tabs is inserted into each inserting opening of the printed wiring board. The tabs are soldered on a lower surface of the printed wiring board. Then, a lever-holding casing holding a lever therein is installed on the connector.
    Type: Grant
    Filed: October 25, 1994
    Date of Patent: April 16, 1996
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Tatsuya Sumida, Yasuo Matsushita
  • Patent number: 5489216
    Abstract: This invention prevents lowering of working efficiency and an abnormal deformation, a breakage and the like of conductive terminals upon coupling a printed circuit base plate to a card edge connector in a card edge connector assembly. When a card edge connector 10 is inserted into an mouth 4 in a base plate holder 1, sliding edge portions 27 ride on ramp faces 5a on ribs 5 to pivot a pair of inner housings 20. Then, contacting portions 22a of first terminals 22 engage with second terminals on opposite sides of a printed circuit base plate 2. The printed circuit base plate 2 enters smoothly between the contacting portions 22a without causing an elastic deformation in the portions 22a and gouging the plate 22 due to their contact.
    Type: Grant
    Filed: June 9, 1994
    Date of Patent: February 6, 1996
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Yasuo Matsushita, Mitsuhiro Fujitani
  • Patent number: 5295846
    Abstract: An electric connector assembly comprising plug and socket connectors adapted to be connected together. The socket connector includes a socket connector housing having an end portion adapted to be received within the receptacle in the plug connector housing and also having parallel passageways defined therein so as to open outwardly from the end portion thereof. Each passageway accommodates therein a socket terminal member. A retainer is releasably mounted on the end portion of the socket connector housing. This retainer carries at least one contact bridge member engageable with the socket terminal members to establish an electric circuit between the socket terminal members when the socket terminal members have been inserted completely into the passageways and the retainer has been completely mounted on the end portion of the socket connector housing.
    Type: Grant
    Filed: December 11, 1992
    Date of Patent: March 22, 1994
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Tatsuya Sumida, Yasuo Matsushita
  • Patent number: 5062926
    Abstract: The solvent recovery apparatus includes an adsorption tower having a gas adsorption element; a gas supply pipe for supplying a solvent-containing gas to the adsorption tower; a steam supply pipe for supplying steam to the adsorption tower; and a solvent recovery pipe for recovering a removed solvent. Disposed at the solvent recovery pipe are a condenser and a specific-gravity separating unit for recovering a liquefield solvent. An intermediate liquid storing unit is disposed between the condenser and the specific-gravity separating unit, and has a valve adapted to be automatically opened when the intermediate liquid storing unit stores a liquid of which amount exceeds a preset value, so that the liquid flows into the specific-gravity separating unit. With this solvent recovery apparatus, organic solvent gas or flon gas may be recovered.
    Type: Grant
    Filed: September 28, 1990
    Date of Patent: November 5, 1991
    Assignees: Osaka Gas Limited, Asahi Seisakusho Company Limited
    Inventors: Takeshi Maeda, Hiroshi Kawaguchi, Harukazu Yamaguchi, Hitoshi Sakai, Akio Ando, Yasuo Matsushita, Tetsuya Takemoto
  • Patent number: 5030116
    Abstract: A connector block for injectors for an internal combustion engine comprises a rod-like main stem section of a heat-resistant rigid resin having a connector portion for a wire harness and a required number of injector connecting portions disposed at predetermined intervals that are molded as integral parts thereof, and tab-like terminals are made exposed from the connector portion for a wire harness and the injector connecting portions, and bus bars are insert molded in the rod-like main stem section for effecting an electrical connection between the connector portion and injector connecting portions, whereby an electrical connection is effected between a wire harness and a group of injectors.
    Type: Grant
    Filed: August 29, 1990
    Date of Patent: July 9, 1991
    Assignees: Sumitomo Wiring System, Ltd., Nippondenso Co., Ltd.
    Inventors: Tatsuo Sakai, Mitsuhiro Fujitani, Yasuo Matsushita, Akira Nabeshima
  • Patent number: 4923829
    Abstract: Composite ceramic materials and a method of the same are disclosed, in which a ceramic material mainly containing silicon nitride, and at least one compound selected from a group consisting of nitrides, carbides, borides, silicides, oxides and oxynitrides of elements belonging to IIIa, IIIb, IVa, IBb, Va, VIa and VIII are combined to form a sintered body, and particles and whiskers of the ceramic material and compound are interlocked with each other and fixed so that the sintered body has a porosity of 5 to 30%. In the above composite ceramics, the particle of the compound are coupled with each other through the whisker or particle of the ceramic material. Accordingly, the composite ceramics are small in charge rate of size due to sintering, and are excellent in tenacity, heat resisting property and thermal shock resisting property. Further, the resistivity of the sintered body can be varied by changing the mixture ratio of ceramic material and compound.
    Type: Grant
    Filed: February 17, 1989
    Date of Patent: May 8, 1990
    Assignee: Hitachi, Ltd.
    Inventors: Yoshiyuki Yasutomi, Yasuo Matsushita, Kousuke Nakamura
  • Patent number: 4651192
    Abstract: A semiconductor device with a semiconductor element encased in a hollow ceramic package. The portion of the package at which the semiconductor element is disposed is formed from SiC admixed with Be or a compound of Be.
    Type: Grant
    Filed: July 3, 1985
    Date of Patent: March 17, 1987
    Assignee: Hitachi, Ltd.
    Inventors: Yasuo Matsushita, Kousuke Nakamura, Mitsuru Ura, Fumiyuki Kobayashi
  • Patent number: 4585706
    Abstract: A semi-conductor device comprising sintered aluminum nitride having a high thermal conductivity, which comprises at least 65% by weight of aluminum nitride, and at least one of beryllium, a beryllium compound, lithium and a lithium compound.
    Type: Grant
    Filed: August 26, 1985
    Date of Patent: April 29, 1986
    Assignee: Hitachi, Ltd.
    Inventors: Yukio Takeda, Satoru Ogihara, Mitsuru Ura, Kousuke Nakamura, Tadamichi Asai, Tokio Ohkoshi, Yasuo Matsushita, Kunihiro Maeda
  • Patent number: 4581501
    Abstract: An ignition distributor for an internal combustion engine with reduced electric discharge energy and suppressed radio noise generation comprises a rotor electrode capable of rotary motion and a plurality of stationary electrodes arranged substantially in a circle around the rotor electrode through an electric discharge clearance therebetween, where the rotor electrode is made of a sintered mixture comprising zirconium oxide and an electroconductive inorganic compound having a specific resistance of not more than 10.sup.6 .OMEGA.cm as main components. The sintered mixture can be ZrO.sub.2 and an oxide selected from ZnO, NiO and CoO; or ZrO.sub.2, aluminum oxide and an oxide selected from ZnO, CoO, Al.sub.2 TiO.sub.5 and SrTiO.sub.3 or a carbide selected from ZrC, TiC and TaC.
    Type: Grant
    Filed: July 25, 1984
    Date of Patent: April 8, 1986
    Assignee: Hitachi, Ltd.
    Inventors: Ken Takahashi, Ryutarou Jimbou, Yasuo Matsushita, Seiichi Yamada, Hiromitsu Nagae
  • Patent number: 4571610
    Abstract: Disclosed are semiconductor devices in which an electrical insulating substrate is made of a sintered silicon carbide body having thermal conductivity of at least 0.4 cal/cm.multidot.sec.multidot..degree.C. at 25.degree. C., electrical resistivity of at least 10.sup.7 ohm.multidot.cm at 25.degree. C. and coefficient of thermal expansion of 3.3.about.4.times.10.sup.-6 /.degree.C. at 25.degree. C. to 300.degree. C.
    Type: Grant
    Filed: December 16, 1982
    Date of Patent: February 18, 1986
    Assignee: Hitachi, Ltd.
    Inventors: Yasuo Matsushita, Yukio Takeda, Kousuke Nakamura, Tokio Ohkoshi
  • Patent number: 4565907
    Abstract: An ignition distributor for an internal combustion engine with reduced electric discharge energy and suppressed radio noise generation comprises a rotor electrode capable of rotary motion and a plurality of stationary electrodes arranged substantially in a circle around the rotor electrode through an electric discharge clearance therebetween, where the rotor electrode is a sintered mixture comprising an aluminum compound and/or a boron compound and silicon carbide and having a specific resistance of 10 to 10.sup.6 .OMEGA.cm at room temperature.
    Type: Grant
    Filed: July 25, 1984
    Date of Patent: January 21, 1986
    Assignee: Hitachi, Ltd.
    Inventors: Ken Takahashi, Ryutarou Jimbou, Yasuo Matsushita, Seiichi Yamada, Tetuo Kosugi
  • Patent number: 4555358
    Abstract: An electrically conductive sintered ceramics of the present invention comprises, as the main ingredients thereof, (a) silicon carbide, (b) an inorganic compound which exhibits a positive resistance-temperature coefficient, and preferably (c) a sintering assistant. The electrically conductive sintered ceramics obtained exhibits a positive resistance-temperature coefficient as a whole.A ceramic heater of the invention makes use of the electrically conductive sintered ceramics in an electrically conductive portion thereof.A sintered product which exhibits a positive resistance-temperature coefficient helps to prevent the occurrence of thermal runaway or thermal destruction.
    Type: Grant
    Filed: May 24, 1983
    Date of Patent: November 26, 1985
    Assignee: Hitachi, Ltd.
    Inventors: Yasuo Matsushita, Kousuke Nakamura, Koji Harada