Patents Represented by Attorney, Agent or Law Firm Sughure, Mion, Zinn, Macpeak & Seas, PLLC
  • Patent number: 6323757
    Abstract: In a vibration motor assembly for use in, e.g., a portable phone, a weight is mounted on the output shaft of a motor and has a hermetically closed bore filled with a magnetic fluid. A magnetic body is disposed in the bore in the vicinity of the center of rotation of the weight. When the motor is not energized, the weight is held in a halt together with the shaft of the motor. In this condition, magnetic particles included in the magnetic fluid adhere to the magnetic body due to a magnetic force acting between the particles and the body. That is, all the magnetic particles are positioned in the vicinity of the center of rotation of the weight. Consequently, even a small torque, i.e., a small current can cause the motor to start rotating.
    Type: Grant
    Filed: September 15, 1999
    Date of Patent: November 27, 2001
    Assignee: NEC Corporation
    Inventor: Hisami Nagai
  • Patent number: 6321799
    Abstract: A mercury supplying method capable of always supplying a constant amount of mercury into a chamber part easily by executing measurement and ejection of the mercury at the same time. A small diameter pipe as a mercury supply path, is inserted through a glass tube elongating from a chamber part of an arc tube from above so as to have the tip part thereof substantially reaching into the chamber part, and connecting the upstream side of the sealed mercury supply path (mercury barrel) with a gas pressure adjuster. The gas pressure adjuster keeps the inside of the mercury supply path (mercury barrel) at a predetermined pressure so as to maintain the inside of the small diameter pipe in the state filled with mercury as well as applying a predetermined pressure to the mercury in the small diameter pipe for a predetermined time and thus ejecting a predetermined amount of mercury from the small diameter pipe tip part so as to be dropped and supplied to the chamber part.
    Type: Grant
    Filed: June 23, 2000
    Date of Patent: November 27, 2001
    Assignee: Koito Manufacturing Co., Ltd.
    Inventors: Kunio Fukai, Takeshi Fukuyo, Akihiro Nagata, Masakazu Nagasawa
  • Patent number: 6239539
    Abstract: An insulating plug for an electric discharge lamp apparatus, includes: a front portion includes an outer cylindrical portion and an inner cylindrical portion, the inner cylindrical portion having a substantially unique thickness and an opening to receive an arc tube of an electric discharge lamp; a focusing ring extending from the outer cylindrical portion of the front portion; and a rear portion having a rear-end cylindrical portion and a center portion. The front portion, the focusing ring and the rear portion are integrally molded by injecting a synthetic resin into a mold from a gate of the mold, the gate facing the rear-end cylindrical portion of the rear porition of the insulating plug. Furthermore, the electric discharge lamp apparatus in which an arc tube is inserted into the opening of the insulating plug described above.
    Type: Grant
    Filed: December 1, 1998
    Date of Patent: May 29, 2001
    Assignee: Koito Manufacturing Co., Ltd.
    Inventors: Kunimasa Mochiduki, Masato Harazaki, Yasuyoshi Numajiri, Takeshi Fukuyo, Yoshitaka Ohshima, Shinichi Irisawa
  • Patent number: 6226339
    Abstract: A system and method for detecting phase lock in a phase locked loop (PLL) which determines a phase of an oscillating frequency by detecting a phase of a frequency of a voltage controlled oscillator including a multi-detection circuit for generating a locked information signal having N bits by comparing a phase difference between the input reference frequency and the fed-back oscillating frequency to determine a logical up/down signal for charging/discharging during the up/down interval, and when the charge voltage is predicted to equal a reference voltage representing a signal which is K times the reference frequency, for comparing to the set reference frequency in turn to add or subtract from the determined value which is divided by four from the reference frequency, and also includes a current controller for determining input current of a charging pump based on the locked information signal having N bits.
    Type: Grant
    Filed: October 7, 1997
    Date of Patent: May 1, 2001
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chul Nam, A. N. Kourganov
  • Patent number: 6135898
    Abstract: In a multi-piece solid golf ball comprising a solid core, an intermediate layer, and a cover, the core at its surface has a Shore D hardness Hs of less than 55, the intermediate layer has a Shore D hardness Hm, and the cover has a Shore D hardness Hc, which satisfy 0.6<Hm/Hs<1.0 and 1.2<Hc/Hm<2.0. The intermediate layer is formed mainly of a polyurethane resin, and the cover is formed mainly of an ionomer resin. The ball has a soft feel, satisfactory distance coverage, and durability, and is improved in spin properties.
    Type: Grant
    Filed: March 16, 1999
    Date of Patent: October 24, 2000
    Assignee: Bridgestone Sports Co., Ltd.
    Inventors: Hiroshi Higuchi, Yasushi Ichikawa, Hisashi Yamagishi
  • Patent number: 6042773
    Abstract: A process for producing an aromatic polyester by esterifying a dicarboxylic acid mainly composed of an aromatic dicarboxylic acid and a glycol mainly composed of ethylene glycol in the presence of 1 to 30 mmol %, based on the dicarboxylic acid, of a quaternary phosphonium sulfonate having ester-forming functional group(s), and then polycondensing the resulting product.
    Type: Grant
    Filed: April 27, 1998
    Date of Patent: March 28, 2000
    Assignee: Teijin Limited
    Inventors: Mitsuru Teramoto, Masahiko Kosuge
  • Patent number: 5979283
    Abstract: A miter guide for guiding a work piece along the cutting path of a saw blade or another working tool. The miter guide includes a guide bar which fits in a slot in the surface of a table, a fence for supporting the work piece, and a telescoping extension arm connected between the fence and the guide bar for fixing the position of the fence at a predetermined angle with respect to the plane of the saw blade. The fence is pivotally connected to the guide bar, and the telescoping extension arm is also pivotally connected to the guide bar, as well as being pivotally connected to the fence at an end of the fence remote from the guide bar. A broad based triangle is formed by the guide bar, the fence and the extension arm. The extension arm includes a rod that is slidably received in a tube, and a knob that is turned to push a deformable portion of the tube against the rod to fix a length of the extension arm, thereby setting the angle of the fence.
    Type: Grant
    Filed: September 9, 1997
    Date of Patent: November 9, 1999
    Inventor: David H. Osborne
  • Patent number: 5859289
    Abstract: The present invention provides a method for isolating N-phosphonomethylglycine which comprises adding an acid to precipitate salts from an aqueous solution of an alkali metal salt and/or an alkaline earth metal salt of N-phosphonomethylglycine solution to neutralize and adjust the same to a pH of 2.5 or higher, removing the precipitated salts, and adjusting the pH to 2.5 or lower to crystallize N-phosphonomethylglycine. N-phosphonomethylglycine is thus isolated and purified in high purity and good yield.
    Type: Grant
    Filed: March 11, 1997
    Date of Patent: January 12, 1999
    Assignee: Showa Denko K.K.
    Inventors: Hideo Miyata, Toru Sasaki, Kohei Morikawa
  • Patent number: 5766054
    Abstract: In order to heat a field emission type cold cathode 10 of a cathode ray tube, which generates electron beams, to a temperature high enough to obtain a desired electron emission characteristics of the field emission type cold cathode even when an inner temperature distribution of an evacuating furnace 20, which includes furnace temperature setting heaters 21 and a vacuum pump 23, is not uniform, the field emission type cold cathode 10 of an electron gun 3 of the cathode ray tube, which is provided within a neck portion 2a of a bulb 2 of the cathode ray tube, is locally heated by a neck heater 22 detachably mounted on an outer peripheral surface of the neck portion 2a while the bulb 2 is being evacuated.
    Type: Grant
    Filed: August 20, 1996
    Date of Patent: June 16, 1998
    Assignee: NEC Corporation
    Inventor: Toshio Kaihara
  • Patent number: 5757856
    Abstract: The invention relates to an 8-PSK differential coder for trellis-coded modulation and to a corresponding pragmatic decoder, enabling 90.degree., 180.degree., and 270.degree. phase ambiguities to be lifted. The invention applies in particular to transmitting images at high rate by radio link.
    Type: Grant
    Filed: November 9, 1995
    Date of Patent: May 26, 1998
    Assignee: Alcatel N.V.
    Inventor: Juing Fang