Patents by Inventor Hitoshi Sakai

Hitoshi Sakai 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: 5380218
    Abstract: The terminal lug consists of an electrical contact portion and a wire connecting portion. In the wire connecting portion, the side plate portions on both sides of the base portion are bent upright. Between the side plate portions, plate-like pressing pieces each formed with a conductor contact slot are cut from the base portion and bent upright. The pressing pieces are each formed integrally with locking ears projecting from both sides of the rising base part thereof. The locking ears increase the width of the pressing piece and therefore strengthen the rising base part of the pressing piece where stresses concentrate. The locking ears are engaged in notches formed in the side plate portions to hold the pressing pieces reliably in their upright conditions.
    Type: Grant
    Filed: September 7, 1993
    Date of Patent: January 10, 1995
    Assignee: Yazaki Corporation
    Inventors: Hiroshi Yamamoto, Hitoshi Sakai
  • Patent number: 5346414
    Abstract: A construction of a rear holder for a connector capable to be drawn out that comprises a connector housing, connector terminals and a rear holder accompanied with a means for pulling the rear holder out, the rear holder as a stopper for movement of the terminals being inserted into the housing from a opening behind and engaging with the housing by means of projections on the holder and holes in the upper wall of the housing, is characterised by a channel with a pit at the front bottom forming a supporter step for the means, which the means for pulling the rear holder out is easily inserted into.
    Type: Grant
    Filed: July 21, 1993
    Date of Patent: September 13, 1994
    Assignee: Yazaki Corporation
    Inventors: Hitoshi Sakai, Hitoshi Saitoh, Osamu Sugiyama
  • Patent number: 5335413
    Abstract: A support for a connector to be inspected and an inspection device body are disposed to be freely movable with respect to a base, connector engaging pins which go into the connector to be inspected are fixed to the base side within the support, and a plurality of inspection pins are arranged in a row in the inspection device body with their respective leading ends projected. For inspection, the inspection pins are moved backward as contacted with the terminal fitting of the connector to be inspected to pass electricity through a circuit in the inspection device body and the connector engaging pins work to detect the terminal fitting in the incompletely inserted state and move the incompletely inserted terminal fitting into the completely inserted position as the connector is moved.
    Type: Grant
    Filed: July 27, 1993
    Date of Patent: August 9, 1994
    Assignee: Yazaki Corporation
    Inventors: Hiroshi Yamamoto, Hitoshi Sakai
  • Patent number: 5292716
    Abstract: A RE-Ba-Cu-O type oxide superconducting material (RE represents Y, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb, Lu or a combination of two or more of them) having a phase structure including a REBa.sub.2 Cu.sub.3 O.sub.y phase and a RE.sub.2 BaCuO.sub.5 phase of 20 .mu.m or less in diameter dispersed in the REBa.sub.2 Cu.sub.3 O.sub.y phase, in which superconducting material RE consists of at least two elements selected from Y, Cl, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb and Lu. Said oxide superconducting material can be produced by melt processing.
    Type: Grant
    Filed: January 15, 1992
    Date of Patent: March 8, 1994
    Assignee: NGK Insulators, Ltd.
    Inventors: Hitoshi Sakai, Hitoshi Yoshida, Hideyuki Baba, Manabu Yoshida
  • Patent number: 5254021
    Abstract: An electrical terminal is for use in an automotive wire harness connector. The electrical terminal has a conductor crimping portion for crimping the conductor of an electrical wire and a stabilizer which crimps the insulation coating of the electrical wire and prevents rolling of the electrical terminal. The stabilizer has a bottom plate which is partly cut to form an aperture, the portions of the bottom plate defining both ends of the aperture being bent and raised inward so as to enhance the crimping force on the insulation coating of the electrical wire.
    Type: Grant
    Filed: August 20, 1992
    Date of Patent: October 19, 1993
    Assignee: Yazaki Corporation
    Inventors: Hiroshi Yamamoto, Hitoshi Sakai, Takayoshi Endo, Tamio Watanabe
  • Patent number: 5232907
    Abstract: An yttrium-barium-copper oxide powder consisting of a powdery mixture of Y.sub.2 BaCuO.sub.5 with Ba.sub.3 Cu.sub.5 O.sub.8, which can be formed into a dense sintered body having excellent superconducting characteristics. An yttrium-barium-copper oxide superconducting body is manufactured by firing the above powder preferably at 820.degree.-980.degree. C. under oxidizing atmosphere having an oxygen partial pressure of 0.01-0.5 atm.
    Type: Grant
    Filed: December 13, 1991
    Date of Patent: August 3, 1993
    Assignee: NGK Insulators, Ltd.
    Inventors: Keiji Matsuhiro, Hitoshi Sakai, Manabu Yoshida
  • Patent number: 5230636
    Abstract: In a terminal protection type connector in which a flexible locking arm for locking a female connector housing is provided on a male connector housing, and the elastic contacts of terminals accommodated in the male connector housing are exposed through openings formed in the latter, a terminal protecting member is slidably mounted on the male connector housing in such a manner that said terminal protecting member covers the openings and engages with the flexible locking arm.
    Type: Grant
    Filed: November 23, 1992
    Date of Patent: July 27, 1993
    Assignee: Yazaki Corporation
    Inventors: Toshihiko Masuda, Hiroshi Yamamoto, Hitoshi Sakai
  • Patent number: 5202305
    Abstract: The superconducting structure for magnetic shielding according to the present invention comprises at least two layers of a superconducting layer and a substrate. This superconducting structure for magnetic shielding can be formed in a plate-like shape or a cylindrical shape. When the structure is prepared in three-layers by providing an intermediate layer between the superconducting layer and the substrate, the three-layered structure has improved superconducting properties. When a protective layer is provided on the superconducting layer to protect the layer, the resulting structure has improved thermal shock resistance. The intermediate layer preferably consists of a ceramic or a noble metal and the ceramic preferably consists of a glass.
    Type: Grant
    Filed: December 3, 1991
    Date of Patent: April 13, 1993
    Assignee: NGK Insulators, Ltd.
    Inventors: Keiichiro Watanabe, Hitoshi Yoshida, Hitoshi Sakai, Shuichiro Oki, Manabu Yoshida
  • Patent number: 5189788
    Abstract: In locking metal terminals in a connector, a terminal locking jig having engaging prongs which are extended respectively so as to be engaged with terminal accommodating chambers in the rear end portion of a connector housing is inserted into a terminal-locking-member accommodating chamber formed surrounding the terminal accommodating chambers, to drive the metal terminals which are not completely locked yet to the positions where the metal terminals are completely locked, and thereafter a terminal locking element having engaging prongs which are extended in the same manner is inserted into the connector housing from the rear or side. Thus, the terminal locking member can be engaged with the connector housing with ease.
    Type: Grant
    Filed: August 30, 1991
    Date of Patent: March 2, 1993
    Assignee: Yazaki Corporation
    Inventors: Hitoshi Sakai, Toshihiko Masuda
  • Patent number: 5174785
    Abstract: A low insertion-withdrawal force electric connector is disclosed wherein a pin is mounted on one side wall of a male housing; a groove into and out of which said pin is movable is provided in a hood of a female housing; a cam lever is pivotally mounted on said hood; and the cam lever has at its front end an eccentric cam groove which is engageable with the pin so as to cause said two housings to be fitted and disengaged relative to each other in response to the pivotal movement of said lever. A fitting-side acting surface of the eccentric cam groove against the pin is disposed generally perpendicular to the direction of advance of said pin when the two housings are completely fitted together.
    Type: Grant
    Filed: July 11, 1991
    Date of Patent: December 29, 1992
    Assignee: Yazaki Corporation
    Inventors: Takayoshi Endo, Takashi Ishii, Hitoshi Sakai, Shigemi Hashizawa, Toshihiko Masuda
  • Patent number: 5116809
    Abstract: An excellent oxide series superconductive sintered body can be provided which can be joined to a metallic member easily and economically at low temperatures without causing peeling-off and deformation of the metallic member, cracks in the sintered body, and deterioration of the sintered body, by coating the surface of the sintered body with a coating metal. A method of producing the sintered body having the coating metal is also provided.
    Type: Grant
    Filed: July 6, 1989
    Date of Patent: May 26, 1992
    Assignee: NGK Insulators, Ltd.
    Inventors: Nobuo Tsuno, Keiji Matsuhiro, Hitoshi Sakai
  • Patent number: 5089468
    Abstract: The present process for producing a Bi-based superconducting oxide includes the steps of molding a material powder and subjecting the molded article to partial melting and then to crystallization in the presence of oxygen. In that case, the molded article is annealed, after the partial melting, to the crystallization temperature and subjected to crystallization at that temperature. Also, the article after the crystallization is cooled and the cooled article is heat-treated in an inert gas atmosphere. According to the above process, there can be obtained a Bi-based superconducting oxide having excellent superconducting properties.
    Type: Grant
    Filed: March 28, 1990
    Date of Patent: February 18, 1992
    Assignee: NGK Insulators, Ltd.
    Inventors: Hitoshi Yoshida, Hitoshi Sakai, Shuichiro Oki, Keiichiro Watanabe, Manabu Yoshida, Toshio Oda
  • Patent number: 5079226
    Abstract: A jointed structure comprising at least two kinds of oxide superconductor having different melting points, higher melting point superconductor and one lower melting point oxide superconductor being alternately jointed. In this jointed structure, the lower melting oxide superconductor is used as a joint layer for the higher melting oxide superconductors. The jointed structure can be obtained by combining an Y--Ba--Cu--O oxide superconducting material and a Bi--Sr--Ca--Cu--O oxide superconducting material, or by combining two Bi--Sr--Ca--Cu--O oxide superconducting materials of different compositions and accordingly of different melting points. Large cylindrical structures used as, for example, a container for apparatus for biomagnetism measurement can be produced by jointing two or more divided cylindrical parts. In this case, the techique of the jointed structure of the present invention can be applied for jointing of the divided cylindrical parts.
    Type: Grant
    Filed: March 28, 1990
    Date of Patent: January 7, 1992
    Assignee: NGK Insulators, Ltd.
    Inventors: Hitoshi Sakai, Hitoshi Yoshida
  • 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: 4987451
    Abstract: The present invention discloses an image forming apparatus comprising an image forming unit attachable to the body of the image forming apparatus and having at least a developing device which has a toner receiving opening, a toner supply member attachable to the body of the image forming apparatus and having a toner supply opening opposed to the toner receiving opening at a predetermined position when the unit is attached to the body of the image forming apparatus for supplying toner to the developing device through the toner supply opening, a covering member for selectively covering the toner supply opening, a fixing member for fixing the unit to the body of the image forming apparatus, and a moving member disposed in the body of the image forming apparatus for moving the covering member so that the toner receiving opening is open when the unit is fixed to the body of the image forming apparatus by the fixing member.
    Type: Grant
    Filed: January 26, 1990
    Date of Patent: January 22, 1991
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Akihiro Hikosaka, Hitoshi Sakai, Takayoshi Yoshihara, Naoichi Asakura
  • Patent number: 4921448
    Abstract: Described herein is a terminal connector retainer particularly suitable for use with a wire harness connector, which is fittingly interlockable with a rear portion of a connector housing for securely and extractably anchoring terminal members in terminal compartments in the connector housing. The terminal connector basically includes; a frame-like body internally provided with openings for insertion therethrough of wires with terminal members, and a plural number of resilient terminal anchoring fingers extending forwardly into the terminal compartments in the connector housing; the resilient anchoring fingers being capable of restoring an original form by the resiliency thereof when the retainer is in a finally interlocked state, and in the restored original form anchoring the terminal members securely in position in the respective terminal compartments in the connector housing.
    Type: Grant
    Filed: April 28, 1989
    Date of Patent: May 1, 1990
    Assignee: Yazaki Corporation
    Inventors: Takayoshi Endo, Sakai Yagi, Hitoshi Sakai, Hitoshi Saito
  • Patent number: 4217060
    Abstract: A synthetic resin nib includes a stick-shaped body having a writing tip at one end and radial slots extending through the length of the stick-shaped body. The cross section of each of the radial slots is such that it becomes wider at the middle portion and tapers toward both a central axis of the stick-shaped body and outer periphery thereof.
    Type: Grant
    Filed: October 24, 1978
    Date of Patent: August 12, 1980
    Assignee: Sakura Color Products Corporation
    Inventors: Kouzaburo Ikegami, Yasumasa Morio, Hitoshi Sakai
  • Patent number: D316401
    Type: Grant
    Filed: October 7, 1988
    Date of Patent: April 23, 1991
    Assignee: Yazaki Corporation
    Inventor: Hitoshi Sakai