Patents Represented by Law Firm Parkhurst, Wendel & Rossi
  • Patent number: 5621839
    Abstract: In order not to vary a light dividing ratio, a light insertion loss and a light extinction ratio, even if an environmental temperature is varied, in a first aspect, an optical waveguide device has at least one optical waveguide substrate made of ferroelectric crystals, an optical waveguide formed in the optical waveguide substrate, a first crystal plane formed in the optical waveguide substrate in which charges of one polarity are generated due to pyroelectrical effects, a second crystal plane made of ferroelectrical crystals in which charges of the other polarity are generated, a first conductive layer formed on the first crystal plane, and a second conductive layer formed on the second crystal plane, wherein the first conductive layer is connected electrically to the first conductive layer.
    Type: Grant
    Filed: August 24, 1994
    Date of Patent: April 15, 1997
    Assignee: NGK Insulators, Ltd.
    Inventors: Masato Asano, Tetsuya Ejiri
  • Patent number: 5537732
    Abstract: A composite type magnetic head core slider including a slider body and a core chip, wherein a slot is formed in the slider body such that the slot is open in an end face of the slider body and located within a width of a central recessed portion between two parallel air-bearing portions formed on a surface of the slider body which is to face a magnetic disk, or within a width of an outer recessed portion disposed on one side of one of the air-bearing portions, which one side is remote from the central recessed portion. The core chip is fixed in the slot such that an upper end portion of the core chip protrudes above a surface of the central or outer recessed portion, and the protruding upper end portion of the core chip is subjected to an operation to form a track portion having a magnetic gap.
    Type: Grant
    Filed: March 15, 1994
    Date of Patent: July 23, 1996
    Assignee: NGK Insulators, Ltd.
    Inventors: Naoya Fukuda, Soichiro Matsuzawa, Hideto Sandaiji, Eigo Hirotsuji
  • Patent number: 5519080
    Abstract: An insulator includes a housing portion. The housing portion is composed a silicone rubber obtained by curing a composition containing diorganopolysiloxane (A) and a fine silicon powder (B) by heating, and a methylalkylpolysiloxane oil (C). The diorganopolysiloxane has at least two silicon atom-bonded alkenyl groups in one molecule. The methylalkyl-polysiloxane oil (C) has each of both terminal ends of each molecular chain blocked with a trialkysiloxy group and possessing a viscosity at 25.degree. C. being 1 to 1,000 centistokes, and is incorporated into the above composition in an amount of 1-100 parts by weight per 100 parts by weight of the component (A).
    Type: Grant
    Filed: August 10, 1994
    Date of Patent: May 21, 1996
    Assignees: Dow Corning Toray Silicone Co., Ltd., NGK Insulators Ltd.
    Inventors: Takao Matsushita, Katsuya Baba, Kazuo Hirai, Isao Nakajima, Takayuki Takeda
  • Patent number: 5519763
    Abstract: A communication (comm) apparatus coupled to a telephone (tel) line comprises a base having a tel portion, a fax portion including a fax modem, a first switch for switching the mode between fax and tel, and a first wireless comm portion, and at least a cordless unit having a second wireless comm portion for communicating with the base, and a second fax portion including a recording/reading portion. The cordless unit may further comprise a second tel portion and a second switch for switching the mode between fax and tel wherein the base can change the second switch to the other mode if necessary. A cordless phone may be further provided. In response to a fax call, the base holds the line but the cordless unit does the fax procedure and if there is no response from the cordless unit within a given interval, the line is disconnected wherein each of cordless unit responds with a different delay time to have a priority. During facsimile comm, an erroneous on-hook is neglected.
    Type: Grant
    Filed: December 27, 1994
    Date of Patent: May 21, 1996
    Assignee: Matsushita Graphic Communication System, Inc.
    Inventors: Takeshi Namekawa, Masayuki Moteki, Hidenori Hayashi, Yukari Hashibe, Satoshi Fukuda, Ikuo Kitajima
  • Patent number: 5515789
    Abstract: A single-cable aerial cableway including guide rails forming a lead-in guide, secured to a stationary cable support structure. The lead-in guide cooperates with a wheel secured to the grip so as to stabilize and position the grip and the load before they pass along the structure. The position of the lead-in guide is automatically adjusted when the position in height of the cable changes so that the weel always enter the lead-in guide.
    Type: Grant
    Filed: August 1, 1994
    Date of Patent: May 14, 1996
    Assignee: Pomagalski S.A.
    Inventors: Max Brochand, Jean-Pierre Rastello
  • Patent number: 5514446
    Abstract: In order to obtain a honeycomb structural body having excellent mechanical strength, which can eliminate a waste use of a catalyst, incomplete cells at an outermost peripheral portion of the honeycomb structural body are sealed selectively by ceramic materials. An incomplete cell does not have a square cross section if the complete cell has a square cross section, and is preferably defined by the cell having an area not more than 90% as that of the complete cell.
    Type: Grant
    Filed: March 9, 1995
    Date of Patent: May 7, 1996
    Assignee: NGK Insulators, Ltd.
    Inventors: Minoru Machida, Koichi Ikeshima
  • Patent number: 5512720
    Abstract: An auxiliary trip device for a circuit breaker which includes an electromechanical actuating device and an energy storage system. The electromechanical actuating device includes a coil housed in a sheath which has a central bore containing a plunger fixed to a push-rod, and a fixed core spaced apart from the plunger, via a first spring. The push-rod is slidable within the bore to actuate a latch device of the energy storage system, which in turn releases a blade which is cooperable with a trip bar of the circuit breaker on which the auxiliary trip device is placed. The blade is biased by a second spring which releases and stores energy greater than released and stored energy of the first spring.
    Type: Grant
    Filed: March 30, 1994
    Date of Patent: April 30, 1996
    Assignee: Merlin Gerin
    Inventors: Patrick Coudert, Jean-Pierre Nereau
  • Patent number: 5510758
    Abstract: A semiconductor device includes a microstrip wiring board. The microstrip wiring board includes a substrate having a main surface, a ground conductor extending on the main surface of the substrate, a dielectric film extending on the ground conductor, and a metal wiring line extending on the dielectric film. A semiconductor chip is connected to the microstrip wiring board via a bump.
    Type: Grant
    Filed: April 6, 1994
    Date of Patent: April 23, 1996
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Suguru Fujita, Kazuaki Takahashi, Morikazu Sagawa, Hiroyuki Sakai, Yorito Ota, Kaoru Inoue
  • Patent number: 5506831
    Abstract: Elimination of mis-detection of a front erasure section of reference information for controlling the position of a read/write head on the disk storage device is accomplished, by zoning a part of a disk surface for a specific zone RZ separately from a data storage zone DZ, storing a dummy data Dd in a code pattern with a predetermined repetition cycle in an entire area, excluding areas for reference information storage, of the specific zone RZ, and positioning a read/write head in the specific zone RZ to detect a front erasure section ER of the reference information RI by a reference information read out means 30. The read out means 30 reads out of an identification section ID and a servo information section SI of the reference information RI securely without being confused by fake erasure sections.
    Type: Grant
    Filed: May 10, 1994
    Date of Patent: April 9, 1996
    Assignee: Fuji Electric Co., Ltd.
    Inventor: Masahiko Iwahara
  • Patent number: 5504542
    Abstract: In an stereoscopic retinal camera having a photographing optical system capable of photographing a pair of stereoscopic fundus images by dividing a light beam reflected by the fundus of an examinee's eye into two light beams through a two-hole diaphragm, provided are an illuminating optical system for illuminating the fundus of an examinee's eye, an observing optical system for observing the fundus illuminated by the illuminating optical system, a detecting optical system for detecting the luminous flux reflected by the fundus and then directed into the observing optical system, and based on the detected result by the detecting optical system, balance of video signal strength between a pair of the fundus images is judged thereby to take a stereoscopic photograph of the fundus.
    Type: Grant
    Filed: October 6, 1994
    Date of Patent: April 2, 1996
    Assignee: Nidek Co., Ltd.
    Inventors: Toshiya Hino, Tsuguo Nanjo, Tokio Ueno
  • Patent number: 5504290
    Abstract: A remote controlled circuit breaker including a mechanism linked to a handle by a drive lever equipped with a roller cooperating with a recharging cam of an energy storage system including a spring. A bearing surface is arranged to block the roller in the charged position, without requiring the presence of a special latching stage, since the line of action of the reaction R of the roller passes via the transmission shaft of the cam. A step-by-step motor of the vibrating type drives the transmission shaft in rotation, and enables almost instantaneous stopping of the cam when the roller is in contact with the bearing surface.
    Type: Grant
    Filed: February 4, 1994
    Date of Patent: April 2, 1996
    Assignee: Merlin Gerin
    Inventors: Pierre Baginski, Jean-Pierre Nebon
  • Patent number: 5504284
    Abstract: The invention relates to a device for both mechanical and electrical lockout of a remote control unit for a modular circuit breaker. This device includes a retractable ring pivoting around a spindle and provided with a locking nose arranged to cooperate with a stop pin located on the circumference of a drum rotating around a spindle and bearing a manual control handle having two stable positions. The retractable ring bears in addition a rocker designed to actuate a switch fitted on the electrical supply circuit of the remote control unit. This device is advantageous in that it also enables padlocking or sealing of the retractable ring.
    Type: Grant
    Filed: January 25, 1994
    Date of Patent: April 2, 1996
    Assignee: Merlin Gerin
    Inventors: Michel Lazareth, Michel Effosse
  • Patent number: 5502519
    Abstract: An optometric apparatus for measuring optical characteristics of an eye to be examined comprising moving device for moving measuring section to adjust alignment with the eye to be examined, first and second deviation amount detecting devices for detecting deviation amount of the measuring section in a lateral and a vertical directions relatively to the eye at the time of measuring each of a left eye and a right eye to be examined, and correcting device for correcting data about an angle of astigmatic axis of the eye measured by the measuring section or interpupilary distance, based on the detected result obtained by the first deviation detecting device and the second deviation detecting device.
    Type: Grant
    Filed: December 20, 1993
    Date of Patent: March 26, 1996
    Assignee: Nidek Co., Ltd.
    Inventor: Yoshinobu Hosoi
  • Patent number: 5502521
    Abstract: An ophthalmometric apparatus comprising an eyeball observing device for observing the front part of the eyeball and a measuring unit moving device for moving a measuring unit relative to the eyeball, characterized by: a first optical index forming system that projects a light beam along the optical axis of the eyeball observing device to form a first alignment index in the eyeball; a first optical index detecting system that detects the position of the first alignment index on the basis of the light that travels along the optical axis of the eyeball observing device; a second optical index forming system that projects a light beam on the eyeball along an optical axis inclined at an angle to the optical axis of the eyeball observing device to form a second alignment index in the eyeball; a second optical index detecting system that detects the position of the second alignment index and has an optical axis in a substantially mirror image relation with the optical axis of the second optical index forming system
    Type: Grant
    Filed: April 26, 1994
    Date of Patent: March 26, 1996
    Assignee: Nidek Co., Ltd.
    Inventor: Kouki Katou
  • Patent number: 5502003
    Abstract: Reciprocal diffusion is prevented in a SiC electronic device by interposing an intermediate layer composed of W or a W-Si alloy rather than forming the Ni electrode directly on a SiC base, providing a stable electrode for which the contact resistance does not increase even when high temperatures are maintained. Bonding is facilitated when Au layer is formed on top of the Ni layer.
    Type: Grant
    Filed: March 1, 1995
    Date of Patent: March 26, 1996
    Assignee: Fuji Electric Co., Ltd.
    Inventors: Shinji Ogino, Tatsuo Urushidani, Hiroshi Kanemaru
  • Patent number: 5501900
    Abstract: A black matrix substrate is provided with a substrate, and a black pattern formed on the substrate. The black pattern includes at least metal particles in a resin pattern, which comprises resin formed in a pattern shape. The metal particles have such a particle diameter distribution that particles having particle diameters in a range of 5 nm to 50 nm are not less than 80% of the total particles. A projected area density at a conversion of 600 .ANG. thickness of the metal particles in the black pattern, is not less than 60%. An optical density of the black matrix substrate is not less than 1.5. A color filter, which has a high contrast ratio, can be constructed by use of this black matrix substrate. Further, a liquid crystal display device, which has a good image quality, can be constructed by use of this color filter.
    Type: Grant
    Filed: March 1, 1994
    Date of Patent: March 26, 1996
    Assignee: DAI Nippon Printing Co., Ltd.
    Inventors: Ryutaro Harada, Satoshi Mitamura
  • Patent number: 5502365
    Abstract: A driving control apparatus consists of a battery for storing electric energy supplied to a motor-driven compressor and a drive motor, a direct current detector for detecting a direct current supplied from the battery to the compressor, a direct current voltage detector for detecting a d.c. voltage applied by the battery, a controller for calculating an electric power consumed by the motor-driven compressor, determining an upper limit of the electric power in dependence on the d.c. voltage, judging whether or not the electric power is larger than the upper limit, and controlling the compressor to reduce the electric power in cases where the electric power is larger than the upper limit. Because the upper limit of the electric power is determined in dependence on the d.c. voltage and because the electric power becomes necessarily lower than the upper limit, an electric tar is not stalled by the exhaustion of the electric power in the battery before a driver arrives at his destination.
    Type: Grant
    Filed: August 30, 1993
    Date of Patent: March 26, 1996
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yasuo Nanbu, Makoto Yoshida
  • Patent number: 5502619
    Abstract: A heat sink assembly for computer chips includes a base plate, a fan and a combinative heat dissipation unit including a plurality of heat dissipation sheets having a plurality of slots therein and X-shaped washers which are alternatively stacked between the base plate and the fan. The combinative heat dissipation unit has a plurality of through openings from a top surface to a bottom surface thereof and transverse gaps in four side surfaces. The openings and gaps are in air communication thereby the heat generated by computer chips and conducted through the base plate to the combinative heat dissipation unit is rapidly carried away by air flow produced by the fan through the openings and gaps.
    Type: Grant
    Filed: December 12, 1994
    Date of Patent: March 26, 1996
    Assignee: Tennmax Trading Corp.
    Inventor: Michael Wang
  • Patent number: D369441
    Type: Grant
    Filed: August 23, 1994
    Date of Patent: April 30, 1996
    Assignee: Cebe International S.A.
    Inventor: Laurent Crestin-Billet
  • Patent number: D371384
    Type: Grant
    Filed: March 29, 1994
    Date of Patent: July 2, 1996
    Assignee: Cebe International S.A.
    Inventor: Patrick Bonnemere