Patents Represented by Attorney Varndell & Varndell, PLLC
  • Patent number: 6246319
    Abstract: Lever bar activation detecting structure including a lever bar and a lever bar pivot seat with which the lever bar is pivotally connected. A magnet and a magnetic switch are respectively disposed on the lever bar and the pivot seat opposite to each other. When the lever bar is pressed, the magnet is moved relative to the magnetic switch so that the magnetic switch is energized to generate a signal which is detected and identified by a controlling unit for turning on an indicating light. The magnet and magnetic switch have excellent waterproof effect and the structure an be easily assembled to lower cost. The detecting structure is used for detecting the braking operation of an electric two-wheel vehicle, especially for an electric bicycle.
    Type: Grant
    Filed: December 15, 1999
    Date of Patent: June 12, 2001
    Assignee: Index Electronic Co., Ltd.
    Inventor: Tsun-Tying Hsu
  • Patent number: 6245287
    Abstract: The present invention is directed to molten metal vessels and molten metal holding furnaces containing a molten metal vessel. The molten metal vessel has a double-layer structure that includes an inner layer vessel in the form of a nonoxide-containing fired casting, and an outer vessel layer made from a calcium silicate refractory. The inner layer of nonoxide-containing fired casting can be obtained by firing in a reduced atmosphere a box-shaped vessel having an open upper side and prepared by casting a monolithic refractory comprising primarily of a silicon carbide material or silicon nitride material. The outer vessel layer of calcium silicate refractory can be obtained by casting calcium silicate monolithic refractory around the inner vessel layer, and thereafter curing, solidifying and drying the resulting casting.
    Type: Grant
    Filed: March 24, 1998
    Date of Patent: June 12, 2001
    Assignee: Nippon Crucible, Co., Ltd.
    Inventors: Hideo Kokubo, Hirohito Ishida, Zinpachi Kawasaki
  • Patent number: 6246932
    Abstract: This invention is a vehicle monitor for avoiding interference between vehicles, etc., without incurring cost increases for deploying auxiliary equipment at a wide-area site, while imposing only low loads on communication lines and monitoring stations, without impairing safety, and while realizing high flexibility for modifications of planned travelling paths. This system can also cope with various forms of interference which can occur throughout the entire planned travelling paths. In the system of the present invention, transceiver devices are provided in the monitoring station and in a plurality of vehicles, respectively, for sending and receiving position data and directive data between the monitoring station and the plurality of vehicles, using a communication system wherewith radio-communication is possible over the distances between the monitoring station and the plurality of vehicles.
    Type: Grant
    Filed: August 19, 1999
    Date of Patent: June 12, 2001
    Assignee: Komatsu Ltd.
    Inventors: Masato Kageyama, Masanori Tojima, Kiyoshi Kaneko, Kazunori Kuromoto, Tomonori Ozaki
  • Patent number: 6243163
    Abstract: The present invention can accurately detect a wavelength of a light to be detected, which is output from a source of light to be detected, without an error even if there is a change in the characteristic of a spectroscope due to an individual difference among the spectroscopes or a change in the measuring environment. The device according to the invention emits at least two reference lights (Ln, La) having different wavelengths (&lgr;n, &lgr;a) as the reference lights by reference light source. And, actual characteristic value (D) of spectroscope is calculated on the basis of detection positions (Sn, Sa) of the at least two reference lights (Ln, La) on a sensor and the known wavelengths (&lgr;n, &lgr;a) of the at least two reference lights (Ln, La) (D=(&lgr;a−&lgr;n)/(Sa−Sn)).
    Type: Grant
    Filed: September 17, 1999
    Date of Patent: June 5, 2001
    Assignee: Komatsu Ltd.
    Inventors: Osamu Wakabayashi, Tatsuo Enami, Shinji Nagai, Toru Suzuki, Takeshi Ohta, Hirokazu Kubo
  • Patent number: 6241543
    Abstract: A tubular lamp assembly is constructed to include a lamp body, and an electric plug connected to electric contact holes at one end of the lamp body, the electric plug including a housing, the housing having a rectangular front receiving chamber, a circular rear receiving hole, a partition wall separating the front receiving chamber from the rear receiving hole, a plurality of receptacle portions integral with one side of the partition wall, and a plurality of through holes through the partition wall and the receptacle portions, a blade holder block installed in the front receiving chamber of the housing, two metal blades installed in the blade holder block and extended out of the housing for connection to an electric socket to receive power supply, the metal blades each having a rear end terminating in two receiving tubes respectively plugged into the receptacle portions of the housing, and a coupler coupled between the housing and the lamp body, the coupler having metal contact pins inserted through the thro
    Type: Grant
    Filed: August 29, 2000
    Date of Patent: June 5, 2001
    Inventor: Chao-Lin Mai
  • Patent number: 6238224
    Abstract: Safety Structure in a Socket, especially a design of safety feature in a socket capable of preventing risks of electric shock due to erroneous insertion of dangerous foreign materials into socket holes; comprising: one insert hole canopy, two detents, two resilient members and a support, the detent being a U shaped sheet having one tilt shield on one side on the surface, with its ramp side tilted inwardly, while the other side constitutes a detent block, both detents arranged tight mounted in said canopy by symmetry, what with a resilient member hinged into the rear side of both tilt shields, a support holds said both detents in position, assembled to completion.
    Type: Grant
    Filed: December 2, 1999
    Date of Patent: May 29, 2001
    Inventor: Hung-Chiang Shao
  • Patent number: 6230724
    Abstract: An operation mechanism for a parasol, including a deflection mechanism, a winding mechanism, a damper mechanism and a clutch mechanism. The deflection mechanism is installed on a locating seat. An upper and a lower sections of the locating seat are formed with upper and lower pin holes. Two shaft rods at two ends of a spiral rod are passed through the upper pin holes with the spiral rod received in the locating seat. One side of the locating seat is rotatably fixed with a first gear. A bottom of a swinging head is formed with a spiral toothed face engaged with and driven by the spiral rod. The winding mechanism and damper mechanism are passed through the lower pin hole. The clutch mechanism connected with a crank is disposed at one end of the winding mechanism. When rotating the crank, the winding mechanism is driven to wind a cord for stretching open the parasol face.
    Type: Grant
    Filed: May 25, 1999
    Date of Patent: May 15, 2001
    Inventor: Jin-Sheng Lai
  • Patent number: 6230584
    Abstract: A bicycle pedal includes a pedal frame having a H-shaped receiving chamber and a rear opening, a clamping member pivoted to the pedal frame for holding down a rubber block on the pedal frame, the clamping member having a protruding rod inserted through the rear opening into the receiving chamber, a compression spring mounted in the receiving chamber and stopped at one side of the protruding rod to hold the clamping member in engagement with the loaded rubber block, an adjustment block mounted in the receiving chamber and stopped at one end of the compression spring, and an adjustment screw rotated to move the adjusting block in adjusting the spring power of the compression spring.
    Type: Grant
    Filed: February 18, 2000
    Date of Patent: May 15, 2001
    Inventor: Wen-Hwa Lin
  • Patent number: 6230850
    Abstract: In a brake caliper for a bicycle disk brake, a crank lever is driven to pull two cam shafts in achieving a braking operation, the crank lever having a substantially U-shaped head fastened to the brake cable of the bicycle, two arms respectively coupled to the two cam shafts, two shoulders respectively connected between the arms and two opposite ends of the U-shaped head, a screw hole and a recessed locating hole respectively provided at the shoulders, a screw rod threaded into the screw hole and having one end inserted into the recessed locating hole, and an adjustment nut threaded onto the screw rod and rotated to adjust the pitch between the shoulders of the crank lever.
    Type: Grant
    Filed: June 23, 1999
    Date of Patent: May 15, 2001
    Inventor: Bill Huang
  • Patent number: 6231042
    Abstract: A card-dispensing device has a mechanism for forcibly modifying the attitude of the slide during the forward run of the slide from a horizontal attitude in which the slide is pushing a card forward to an attitude which is inclined through a fixed angle, and then forcibly returned to its initial horizontal attitude during the backward run.
    Type: Grant
    Filed: May 18, 2000
    Date of Patent: May 15, 2001
    Assignee: Kabushiki Kaisha Nippon Conlux
    Inventors: Yukio Ito, Yoshihisa Hirayama, Hideo Tanaka, Takashi Imaizumi
  • Patent number: 6230593
    Abstract: A handle structure for a screwdriver, which includes a handle fixedly provided at one end of a blade, the handle having a longitudinal slot through two opposite sides of the periphery thereof, a pivot pin fixedly mounted in the handle across the longitudinal slot, and a handle plate turned about the pivot pin, the handle plate having a longitudinally extended, serrated slot coupled to the pivot pin for enabling the handle to be turned about the pivot pin and set between the non-operative position received in the longitudinal slot at the handle, and the operative position arranged perpendicular to the handle.
    Type: Grant
    Filed: August 20, 1999
    Date of Patent: May 15, 2001
    Inventor: Chih-Ching Hsieh
  • Patent number: 6226572
    Abstract: In accordance with the equipment of the present invention, the communication over the entire region of a wide working site can be performed without a cost increase due to the installation of auxiliary equipment, the mutual control of vehicles can be performed with a light burden on a monitoring station without sacrificing safety, and when a failure occurs to transmission/reception equipment, the failure can be quickly and accurately confirmed, and accordingly the abnormality can be quickly and properly dealt with. In the of the present invention, first transmission/reception system for transmitting/receiving at least command data between the monitoring station and a plurality of vehicles via a first communication system which enables wireless communication over the distances between the monitoring station and the vehicles is provided in the monitoring station and the vehicles respectively.
    Type: Grant
    Filed: August 4, 1999
    Date of Patent: May 1, 2001
    Assignee: Komatsu Ltd.
    Inventors: Masanori Tojima, Masato Kageyama, Kiyoshi Kaneko
  • Patent number: 6224177
    Abstract: A sliding track assembly includes an outer rail fixedly mounted inside a desk, the outer rail having a locating flange extended from a rear extension bar thereof, an inner rail moved with a drawer in and out of the outer rail, and positioning mechanism installed in a rear side of the inner rail for stopping the inner rail from jumping forwards relative to the outer rail each time the inner rail is moved with the drawer into the inside of desk, wherein the positioning mechanism includes a hollow fixed block fixedly fastened to the inner rail, and a movable block pivoted to the fixed block and turned between a first position where the movable block is received inside the fixed block and stopped at a front side of the locating flange of the rear extension bar of the inner rail and the inner rail is received inside the outer rail, and a second position where the movable block is extended out of the fixed block for enabling the inner rail to be moved with the drawer out of the desk.
    Type: Grant
    Filed: August 22, 2000
    Date of Patent: May 1, 2001
    Assignee: Yin Da Slide Co., Ltd.
    Inventor: Leo Chu
  • Patent number: 6219924
    Abstract: An air bag buffer device for a hand tool comprises a hollow bag and a plug. The front end of the hollow bag is a hollow and sealed snake-like tube. At the center of one end of the snake-like tube is formed with a round post. The center of the round post has an axial helical hole, and the helical hole is communicated with the interior of the snake-like tube. The plug is formed as a helical post, the center of which is an axial air hole, the front end of the air hole formed with a unidirectional elastic valve piece which is closed in the front end. Thereby, the front end of the plug is screwedly inserted into the helical hole of the round post of the hollow bag so that the buffer device is firmly secured to one handle or two handles of a hand tool. As the hand tool applies a force, the impact from closing two handles are reduced to resist the opening of the two handles for being used again.
    Type: Grant
    Filed: February 29, 2000
    Date of Patent: April 24, 2001
    Inventor: Hwei-Rung Chou
  • Patent number: 6222242
    Abstract: The present invention provides a novel thermoelectric semiconductor material having excellent thermoelectric property which is not lowered like a conventional PbTe-based or PbSnTe-based semiconductor material even if a strength is improved by sintering. The thermoelectric semiconductor material of the invention is characterized by having chemical formula AB2X4 (where, A is a simple substance or mixture of Pb, Sn and Ge (IV family elements), B is a simple substance or mixture of Bi and Sb (V family elements), and X is a simple substance or mixture of Te and Se (VI family elements). In this case, a spark plasma sintering device is used to apply a pulsed current through the powder material to cause an electrical discharge among particles of the powder to synthesize the compound AB2X4 having a uniform structure. And, the invention synthesizes a compound, which is to be a thermoelectric semiconductor material, so to have a uniform structure.
    Type: Grant
    Filed: July 26, 1999
    Date of Patent: April 24, 2001
    Assignee: Komatsu Ltd.
    Inventors: Akio Konishi, Katsushi Fukuda
  • Patent number: 6220683
    Abstract: A sliding track assembly includes an outer rail fixedly mounted inside a desk, an intermediate rail carried on a first sliding bearing and moved in and out of the outer rail, an inner rail carried on a second sliding bearing and moved with a drawer in and out of the intermediate rail, and a stop member installed in the intermediate rail to limit forward movement of the inner rail relative to the intermediate rail, wherein the stop member has two rear retaining frames for holding down the second sliding bearing when disconnecting the inner rail from the intermediate rail, the rear retaining frames each having an upright retaining wall for engagement with opposite side walls of the second sliding bearing, the upright retaining wall of each rear retaining frame having a raised portion adapted for engagement with a recessed portion on the respective side wall of the second sliding bearing, the upright retaining walls of the rear retaining frames being respectively spaced from the upright side walls of the interme
    Type: Grant
    Filed: June 13, 2000
    Date of Patent: April 24, 2001
    Assignee: Yin Da Slide Co., Ltd.
    Inventor: Leo Chu
  • Patent number: 6216563
    Abstract: A reversible ratchet wheel positioning arrangement includes a box end body for holding a ratchet wheel, a screw cap detachably threaded into an inner thread in the box end body to hold a ratchet wheel in the box end body, and a toothed stop rod mounted in a transverse hole in the box end body and shifted in the transverse hole between a left position and a right position to limit the direction of the ratchet wheel being installed in the box end body, wherein the stop rod can be rotated in the transverse hole between a first position and a second position subject to the type of teet of the ratchet wheel being isntalled in the box end body.
    Type: Grant
    Filed: April 28, 2000
    Date of Patent: April 17, 2001
    Inventor: Chih-Ching Hsieh
  • Patent number: 6216562
    Abstract: A wrench, which includes a hollow three-way (or two-way) casing, a plurality of coupling shafts respectively mounted in the ends of the casing for holding a respective tool accessory, and a transmission mechanism coupled between the coupling shafts for enabling the coupling shafts to be rotated synchronously, wherein the transmission mechanism includes a plurality of transmission members respectively coupled to the coupling shafts inside the casing and meshed with one another, and a plurality of compression springs respectively mounted in the coupling shafts to force the transmission members into engagement with one another, the transmission members each having a rectangular shank at one end inserted into a rectangular coupling hole on the respective coupling shaft and supported on the corresponding compression spring, and a bevel gear at an opposite end meshed with the bevel gear at the transmission member in an adjacent coupling shaft.
    Type: Grant
    Filed: March 16, 2000
    Date of Patent: April 17, 2001
    Inventor: Chih-Ching Hsieh
  • Patent number: 6213453
    Abstract: A gasification auxiliary device for high pressure oil ejection is disclosed, especially, a multiple penetrating gasification auxiliary device. The device can be used to atomize oil molecules. The gasification auxiliary device includes an upper case, a lower case, and two banks of gasification blades. The two banks of gasification blades are alternatively arranged with one another. The gasification blades can be provided within the device, so that the lower half edges and upper half edges of alternative gasification blades do not have gasification holes and are tightly connected to the case. Alternatively, the gasification blades can be arranged within the device, so that a gap exists alternatively between the upper and lower edge of the gasification blades and the wall of the case. When oil under high pressure is ejected into the device, the oil molecules will pass through the holes or gaps and gasify.
    Type: Grant
    Filed: July 30, 1999
    Date of Patent: April 10, 2001
    Inventor: Ren-Sheng Ou
  • Patent number: D440489
    Type: Grant
    Filed: April 25, 2000
    Date of Patent: April 17, 2001
    Assignee: IBM Japan Business Logistics Co., Ltd.
    Inventors: Hideo Igami, Yuhta Ishii