Patents Represented by Attorney Dellett & Walters

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  • Phase mask for forming diffraction grating, and optical fiber and optical waveguide having diffraction grating duplicated using the phase mask
    Patent number: 6876792
    Abstract: The present invention relates to a precision phase mask for forming diffraction grating in optical fiber and optical waveguide, to provide them with nonlinear chirped grating for dispersion compensation use and having low fluctuation or crosstalk in the group delay characteristics. The diffraction grating is formed by means of interference fringe between diffracted lights of different orders, in which the cycle of the diffraction grating 20 increases nonlinearly, wherein plurality of diffraction gratings G1, G2, G3 . . . having different cycles are assembled on a plane in increasing order of the cycle with the directions of the diffraction gratings directed to the same direction, and assembled in such a manner that, where the cycle of grating changes nonlinearly and discontinuously, the regions having larger rate of change of the cycle contain proportionally more discontinuous phases per unit length.
    Type: Grant
    Filed: April 21, 2003
    Date of Patent: April 5, 2005
    Assignees: Dai Nippon Printing Co., Ltd., Nippon Telegraph and Telephone Corporation
    Inventors: Masaaki Kurihara, Shigekazu Fujimoto, Tetsuro Komukai, Tetsuro Inui
  • Puncturing type cable coupling apparatus
    Patent number: 6872089
    Abstract: A puncturing type cable coupling apparatus that is implemented either as a plug or a receptacle is disclosed. The basic structure of the cable coupling apparatus includes a shell member and abase member, wherein the base member has a pair of terminal bridges containing claws, corresponding to a pair of backing blocks provided on the shell member, such that an inserted cable will be slightly bent and clamped down between the respective claws and the backing blocks when the base member and the shell member are fitted together. The driving force on the base member allows the claws to puncture the insulation jacket of the cable to force electrical contact with the copper wire inside. The main advantage is that the cable coupling apparatus can be attached on ends of a cable with no need of stripping the insulation jacket before the installation.
    Type: Grant
    Filed: November 3, 2003
    Date of Patent: March 29, 2005
    Inventor: Ching-Hsiung Chen
  • Detachable welding tab assembly
    Patent number: 6866179
    Abstract: A welding tab assembly has a weld tab and a metal rod. The weld tab has an inverted L-shaped recess defined in one side of the weld tab and an inclined hole defined in a top face of the recess. The metal rod is inverted L-shaped and is received in the inverted L-shaped recess. An inclined section obliquely extends from one end of the metal rod and is received in the inclined hole in the weld tab. A fastener detachably holds the metal rod in the recess. In such an arrangement, the welding slag can be cleaned or exhausted during the welding process by means of detaching the weld tab from the welded parts, such that the welding quality is improved.
    Type: Grant
    Filed: September 24, 2002
    Date of Patent: March 15, 2005
    Inventors: Chien-Chang Yang, Marlon Chen
  • Back-up detecting device with a distance reset capability
    Patent number: 6865138
    Abstract: A back-up detecting device with a distance reset capability has a controller with an intensity analysis program and a distance reset function. When an ultrasonic transceiver is installed underneath a vehicle chassis forward of the rear end, a distance correction called a distance pad is measured, calculated and stored in memory by the distance reset function. The distance pad is the distance between the ultrasonic detector and the rear end of the vehicle. When the distance reset capability is used to determine a distance pad for each ultrasonic transceiver, the back-up detecting device presents accurate distances to objects without regard to the structure of the vehicle body without having to alter system hardware or software. Thus the back-up detecting device is suitable for large vehicles of varied shapes and sizes.
    Type: Grant
    Filed: January 22, 2004
    Date of Patent: March 8, 2005
    Inventor: Shih-Hsiung Li
  • Helical rebar structure
    Patent number: 6860077
    Abstract: A reinforcement structure includes multiple steel bars, a primary spiral hoop enclosing the multiple steel bars, wherein joints of the primary spiral hoop and the steel bars are securely combined, multiple secondary spiral hoops, wherein multiple steel bars are inserted into each of the secondary spiral hoops from outside of the primary spiral hoop to inside of the secondary spiral hoop so that joints between the primary spiral hoop and the secondary spiral hoop are formed. A steel bar is sandwiched between the primary spiral hoop and the secondary spiral hoops and joints of the steel bar to the primary spiral hoop and the secondary spiral hoops are securely combined via steel wires. The reinforcement is thus formed by the steel bars, the primary spiral hoop and the secondary spiral hoops.
    Type: Grant
    Filed: May 19, 2003
    Date of Patent: March 1, 2005
    Assignee: Runborn Pretech Engineering Co., Ltd.
    Inventor: Samuel Yin
  • Tool housing with protective pads
    Patent number: 6860342
    Abstract: A tool housing with protective pads for an electrical tool has a housing body and two protectors. The housing body has two sides, a motor housing body and a handle housing body. The handle housing body is formed on the motor housing body. The protectors are mounted respectively on the housing body and each has a first protective pad, a second protective pad and a third protective pad. The pads are made of elastic material, can absorb shocks to prevent the housing body from damaging to improve the useful life of the electrical tool.
    Type: Grant
    Filed: June 7, 2004
    Date of Patent: March 1, 2005
    Assignee: Techway Industrial Co., Ltd.
    Inventors: Simon Wu, Chen-Chen Cheng
  • Semiconductor device
    Patent number: 6858946
    Abstract: A semiconductor device for forming a coil with a high inductance and a high Q value on a semiconductor substrate. A semiconductor device 10 comprises a rectangular semiconductor substrate 12, pads formed near four corners of this semiconductor substrate 12, pads 30 formed in the peripheral region along each side other than the corners, and a bonding wire 40 for connecting adjacent pads 20. The circulation of the bonding wire 40 along the periphery of the semiconductor substrate 12 with the pads 20 formed in the corners constitutes a coil.
    Type: Grant
    Filed: June 26, 2002
    Date of Patent: February 22, 2005
    Assignee: Niigata Seimitsu Co., Ltd.
    Inventors: Hiroshi Miyagi, Akira Okamoto
  • Low profile push-pull magnetic vibrating apparatus
    Patent number: 6853103
    Abstract: An ultra-low profile vibrating transducer, particularly suited for floor mat and ultra thin vibrating pad and multimedia tactical feedback applications, using an “I” core coil in the center and permanent magnets positioned at both ends of the “I” core to create balanced push-pull vibrating actions. Mounting methods to effectively transfer energy to the users while withstanding user's body weight. “I” core coil may be driven by AC power, pulsed and/or DC power or audio power. Elastomeric supports are configured to provide rotational leverage action to further enhance the vibrating effectiveness.
    Type: Grant
    Filed: January 31, 2003
    Date of Patent: February 8, 2005
    Inventor: Hiro Moriyasu
  • Counterfeit-proof volume hologram multilayer structure, and counterfeit-proof volume hologram seal
    Patent number: 6852397
    Abstract: The present invention relates to a counterfeit-proof volume hologram multilayer structure capable of securely preventing a counterfeiter from replicating a volume hologram recorded therein. The multilayer structure comprises a transparent surface protective layer, a volume hologram layer, and an adhesive layer which are sequentially laminated and is characterized in that particles having particle diameter of 350 nm or more are dispersed in at least one of the transparent surface protective layer, the volume hologram layer, and the adhesive layer and that the refractive index ratio (nF/nB) is set to be not less than 1.05 or not greater than 0.
    Type: Grant
    Filed: November 4, 2002
    Date of Patent: February 8, 2005
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Tetsuya Toshine, Kenji Ueda
  • Semiconductor device testing apparatus and test method therefor
    Patent number: 6850860
    Abstract: In a semiconductor device testing apparatus and test method, after a pass value and fail value corresponding respectively to an upper limit and a lower limit of a test range have been set, measurement is not performed at these positions, but measurement is performed by means of a binary search method from the next position.
    Type: Grant
    Filed: March 13, 2001
    Date of Patent: February 1, 2005
    Assignee: Advantest Corporation
    Inventor: Saburo Uehara
  • Rotatable shunting socket housing for telecommunication devices
    Patent number: 6848911
    Abstract: A rotatable shunting socket housing for telecommunication devices includes a body having two sockets respectively defined at two opposite side thereof. Each of the sockets is provided with a plurality of metal feet. A cover is mounted on a side of the body and between the sockets. A connector is rotatably mounted on the cover, and has a plug provided at an exterior side thereof. The plug is perpendicular to the sockets and electrically connected with the metal feet. The body and the cover can be rotated about the connector, and plugs of mounting cords inserted in the can be parallel to a wall, so that the mounting cords are not bent or twisted.
    Type: Grant
    Filed: July 18, 2003
    Date of Patent: February 1, 2005
    Assignee: Tsay-E International Inc.
    Inventor: Fabian Liu
  • Barbecue grill with an adjustable grid
    Patent number: 6845705
    Abstract: A barbecue grill has a stand, a body, a grid and an adjusting device. The body is attached to the top of the stand. The grid is adjustably mounted on the body with the adjusting device. The adjusting device has a shaft and a positioning device. The shaft is moveably extended through the body and is rotatably connected to the grid. The positioning device is mounted between the body and the grid and is connected to the shaft to hold the shaft at a desired position. Accordingly, the grid can be rotated away from the body when the user want to add charcoal into the body or pick the roasted food from the grid. The use of the barbecue grill is convenient and versatile.
    Type: Grant
    Filed: March 31, 2004
    Date of Patent: January 25, 2005
    Inventor: Shang-Chih Chen
  • Gas laser apparatus emitting ultraviolet radiation
    Patent number: 6847670
    Abstract: The oscillation pulse width is extended in a gas laser apparatus emitting ultraviolet radiation by a high-repetition rate oscillating operation. The gas laser apparatus has a pair of laser discharge electrodes connected to the output terminals of a magnetic pulse compression circuit and disposed in a laser chamber. The pulse width is extended by determining circuit constants so that the period of the oscillating current flowing between the discharge electrodes is shortened and, at the same time, the peak value of the current is increased, whereby the laser gas is continuously excited even during at least one half-cycle subsequent to the first half-cycle of the oscillating current to sustain the laser oscillating operation.
    Type: Grant
    Filed: September 14, 2000
    Date of Patent: January 25, 2005
    Assignee: Ushio Denki Kabushiki Kaisya
    Inventors: Koji Kakizaki, Takashi Saito, Hidenori Watanabe
  • Automatic gain control circuit
    Patent number: 6844780
    Abstract: An automatic gain control circuit integrally fabricated on a semiconductor substrate. An AGC circuit 17 controls the gain of an intermediate-frequency amplifier circuit 15 so that the average level of the output signal (sound signal) of an AM detector 16 may be substantially constant. The AGC circuit 17 includes a time-constant circuit 100, which comprises a charging circuit for intermittently charging the capacitor and a discharging circuit for intermittently discharging the same. By this intermittent charging and discharging of the capacitor having a small capacitance, a large time constant is set.
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: January 18, 2005
    Assignee: Niigata Seimitsu Co., Ltd.
    Inventor: Hiroshi Miyagi
  • LC oscillator formed on a substrate
    Patent number: 6842080
    Abstract: An inductor element 30 effectively functions even when formed on a substrate and comprises two upper and lower conductors 1, 2 spirally formed on the front side of a semiconductor substrate 3. The conductors 1, 2 have substantially the same shape. When viewed from the above of the front side of the substrate 3, the two conductors 1, 2 are superposed one on the other almost exactly. Lead wires 6a, 6b are connected to the outer end (outer peripheral end) and the inner end (center end) of the conductor 1, respectively. The outer end of the conductor 1 is connected to the inner end of the conductor 2 through a connection wire 6c. The conductor 1 functions as an inductor conductor and is connected to a circuit provided on the semiconductor substrate 3 through the lead wires 6a, 6b.
    Type: Grant
    Filed: May 18, 1999
    Date of Patent: January 11, 2005
    Assignee: Niigata Seimitsu Co., Ltd.
    Inventors: Akira Okamoto, Takeshi Ikeda
  • Crane assembly
    Patent number: 6840393
    Abstract: A crane assembly has a bracket, a supporting plate, a crane device, a chain and a chain bag. The bracket has two side plates with wheels connected with each other. Each side plate has a first recess defined in the bottom of the side plate to make the side plate have an inverse U-shape. Two axles are mounted between the side plates and are respectively located at two sides of the first recesses in the side plates to combine the side plates together. The supporting plate is attached to the axles and is mounted between the side plates. The craning device is pivotally attached to the supporting plate and has a top portion received in the first recesses in the side plates. Accordingly, the location of the crane device is heightened, and the craning travel of the chain is prolonged.
    Type: Grant
    Filed: March 10, 2003
    Date of Patent: January 11, 2005
    Inventor: Hsueh-Chuan Tu
  • Pen
    Patent number: D501224
    Type: Grant
    Filed: May 27, 2004
    Date of Patent: January 25, 2005
    Inventor: Te-Jung Pan
  • Sliding cover for a lens
    Patent number: D501865
    Type: Grant
    Filed: September 24, 2003
    Date of Patent: February 15, 2005
    Assignee: Kye Systems Corp.
    Inventors: Tsu-Nan Li, Te-Hao Liu, Chen-Pang Chen
  • Barbecue grill
    Patent number: D503306
    Type: Grant
    Filed: November 10, 2003
    Date of Patent: March 29, 2005
    Inventor: Hung-Ta Huang
  • Casing of a power converter
    Patent number: D503678
    Type: Grant
    Filed: March 8, 2004
    Date of Patent: April 5, 2005
    Assignee: Cyber Power System Inc.
    Inventor: Lien-Hsun Ho