Patents Represented by Attorney, Agent or Law Firm Hall, Priddy & Myers
  • Patent number: 6757472
    Abstract: Optical waveplates made of polyethylene naphthalate (PEN) exhibit good optical properties comparable to or exceeding the respective properties of prior art waveplates made of polyimides (PI). PEN waveplates are a technically and commercially reasonable alternative to PI waveplates.
    Type: Grant
    Filed: August 9, 2001
    Date of Patent: June 29, 2004
    Assignee: JDS Uniphase, Inc.
    Inventor: Mart Diemeer
  • Patent number: 6711310
    Abstract: The invention provides an optical isolator including a light collector for redirecting and/or absorbing backward propagating radiation. In the preferred embodiment, the light collector includes at least one of a light absorbing material and a light redirector that does not interfere with forward propagating radiation, but collects the unwanted backward propagating light. Accordingly, the light collecting means are suitable for high power applications for protecting the input optics, including epoxy used to secure the input optical fiber, from unwanted reflected light. Some examples of appropriate light collecting means include neutral density filters, polarizers, mirrors, and right angle prisms.
    Type: Grant
    Filed: April 2, 2001
    Date of Patent: March 23, 2004
    Assignee: JDS Uniphase Corporation
    Inventors: Kok Wai Chang, Qingdong Guo
  • Patent number: 6708943
    Abstract: An apparatus for adjustably mounting a camera. The apparatus comprises a base bracket, a ring bracket, a square bracket and a carrier bracket.
    Type: Grant
    Filed: March 16, 2001
    Date of Patent: March 23, 2004
    Assignee: Silent Witness Enterprises Ltd.
    Inventors: Natalia E. Ursan, William E. Fenton, Dennis K. Ho
  • Patent number: 6706432
    Abstract: A method of improving the performance of magnesium containing electrodes used in metal/air batteries (fuel cells), comprising the addition of one or more additives to the electrolyte or electrode surface. The additives are selected from any of the following groups; dithioburet, tin, and tin plus a quaternary ammonium salt.
    Type: Grant
    Filed: August 1, 2001
    Date of Patent: March 16, 2004
    Assignee: Magpower Systems, Inc.
    Inventors: Klaus Heinrich Oehr, Steven Splinter, Joey Chung-Yen Jung, Elod Lajos Gyenge, Colin W. Oloman
  • Patent number: 6705059
    Abstract: Apparatus which is capable of rotatably carrying a fabric roll in a vertical orientation and which is movably attachable to an element of a known fabricated wall structure. In particular, such apparatus is useful in the practice of dispensing a sheet of vapor retarding fabric when constructing insulated fabricated wall structures.
    Type: Grant
    Filed: September 27, 2001
    Date of Patent: March 16, 2004
    Assignee: Guardian Fiberglass, Inc.
    Inventor: Gary E. Romes
  • Patent number: 6703950
    Abstract: The present invention comprises a method of Gray encoding/decoding of binary and Gray code sequences that are less than full-length, resulting in a geometrically reduced storage requirement.
    Type: Grant
    Filed: September 14, 2001
    Date of Patent: March 9, 2004
    Assignee: PMC Sierra, Ltd.
    Inventor: Cheng Yi
  • Patent number: 6697198
    Abstract: Interleaver/deinterleaver apparatuses for combining/separating optical channels are described. When operating as a deinterleaver, the interleaver/deinterleaver separates an optical signal (e.g. WDM signal) into subsets of optical signals (e.g. channels). In one embodiment, deinterleaving optical signals separates an optical signal into even and odd International Telecommunications Union (ITU) channels. The interleaver/deinterleavers may include isolator components to route optical signals to and from input/output ports. A variety of reflective elements, e.g. quarter wave mirrors, reflective prisms, etalons, can be used for double passing the signals through a birefringent crystal assembly.
    Type: Grant
    Filed: October 23, 2001
    Date of Patent: February 24, 2004
    Assignee: JDS Uniphase Corporation
    Inventors: Kuochou Tai, Kok-Wai Chang, Jyehong Chen, Hongwei Mao
  • Patent number: 6686096
    Abstract: There is disclosed a solid state rechargeable electric battery (10) including a number of cathode plates (7) interposed among a number of anode plates (8) in which the cathode plate (7) includes an aluminium foil (41) coated with a layer of mixture (43) of lithium manganate, chromium and fluoride. The anode plate (8) includes a copper foil (47) coated with a layer of mixture (49) containing petroleum coke. Provided among the cathode plates (7) and anode plates (8) is a solid state electrolyte (14) made up of lithium perchlorate dissolved in ethylene carbonate and diethyl carbonate.
    Type: Grant
    Filed: August 4, 2000
    Date of Patent: February 3, 2004
    Assignee: New Billion Investments Limited
    Inventor: Hing Ka Chung
  • Patent number: 6680954
    Abstract: A method of reducing error-multiplication due to error events in a cell stream transmitted as a plurality of cell sub-streams which includes the steps of receiving an incoming cell stream in the form of an ordered sequence of cells including payload cells, transmitting the incoming cell stream in a round robin fashion on a plurality of physical links such that the ordered sequence of cells is transmitted as a plurality of cell sub-streams, with each cell sub-stream having a multiplexed set of cells from the incoming cell stream, and inserting stuff (st) cells into the cell sub-streams so as to form continuous streams of data. Sequence number cells which are inserted periodically into each cell sub-stream, are used to align the cell sub-streams in frames. Sets of cell location information for the cell sub-streams are encoded and contain the location of payload cells and st cells located within a corresponding cell sub-stream.
    Type: Grant
    Filed: February 22, 1999
    Date of Patent: January 20, 2004
    Assignee: PMC-Sierra, Ltd.
    Inventors: Richard Cam, Steven Lang, Charles Kevin Huscroft
  • Patent number: 6676568
    Abstract: Method for reclosure of the clutch during a change of gear, wherein the clutch is closed in order to adjust the angular speed of the drive shaft to match the angular speed of the primary shaft of the gearbox; the power supply to the engine is stopped, so as not to generate useful torque, the clutch is quickly disposed in a predetermined position, such as to transmit constant torque, which is substantially equal to the drive torque supplied by the engine immediately before the change of gear, and the clutch is kept in the predetermined position, until synchronization of the drive shaft and the primary shaft takes place.
    Type: Grant
    Filed: October 25, 2001
    Date of Patent: January 13, 2004
    Assignee: Magneti Marelli Powertrain, S.p.A.
    Inventors: Gabriele Serra, Alessandro Palma
  • Patent number: 6672029
    Abstract: Apparatus for supporting the pipes of a plumbing system during the construction of a cement building structure. More specifically, apparatus which is attachable at one end to a form board and at another end to a pipe in order that the position of the pipe be maintained during a concrete pouring operation.
    Type: Grant
    Filed: December 12, 2001
    Date of Patent: January 6, 2004
    Inventor: Woodrow James Tucker
  • Patent number: 6673193
    Abstract: Sheets of thermoplastic material for lining structural containers and conduits, and having portions of their surfaces at the edges to be joined to each other treated with urethane, are joined and sealed by a strip of polyvinyl chloride, the interacting surface of which is prepared by hydroxyl modification for sealing with the thermoplastic sheets. The joinder is accomplished by a method that dispenses with any necessity of specially treating the surfaces at any prescribed time prior to accomplishing the joinder, and dispenses with any requirement for heat elevation during joinder. A method of joinder with the thermoplastic sheets alone is also shown.
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: January 6, 2004
    Assignee: Linabond Inc.
    Inventor: Richard L. Bertram
  • Patent number: 6675083
    Abstract: Method for restoration of the drive torque during a change of gear, wherein the clutch is closed in order to adjust the angular speed of the drive shaft to match the angular speed of the primary shaft of the gearbox; when the angular speed of the drive shaft is close to the angular speed of the primary shaft of the gearbox, a reference profile is generated for the angular speed of the drive shaft, and the drive torque generated by the engine is controlled in order to make the angular speed of the drive shaft follow the reference profile, which has a final portion which is substantially tangent to the angular speed of the primary shaft of the gearbox.
    Type: Grant
    Filed: October 25, 2001
    Date of Patent: January 6, 2004
    Assignee: Magneti Marelli Powertrain, S.p.A.
    Inventors: Fabrizio Amisano, Gabriele Serra
  • Patent number: 6671758
    Abstract: This document discloses some technical details of a FIFO interface used for both cell and packet data transfer. This interface is suitable for a large number of ports. It operates at an overall throughput of 800 Mb/s for 16-bit wide data paths at 50 MHz, and 3.2 Gb/s for 32-bit wide data paths at 100 MHz. It is designed to have minimal compatibility issues with UTOPIA L2 and similar interfaces.
    Type: Grant
    Filed: June 30, 2000
    Date of Patent: December 30, 2003
    Assignee: PMC-Sierra, Inc.
    Inventors: Richard Cam, Winston Mok, Jonathan Loewen
  • Patent number: 6668297
    Abstract: A POS-PHY interface for interfacing between SONET/SDH PHY devices and Link Layer devices, including a 32 bit and an 8-bit point-to-point bus interface having a double-word data format operative to accommodate variable size packets of packet data.
    Type: Grant
    Filed: December 14, 1999
    Date of Patent: December 23, 2003
    Assignee: PMC-Sierra, Inc.
    Inventors: Travis J. Karr, Winston Mok, Richard A. J. Steadman, Martin Chalifoux, Larrie S. Carr
  • Patent number: 6658340
    Abstract: A method of updating the transmissibility function of a clutch during the final stage of a gear change, in which the clutch is closed to cause the angular speed of the drive shaft to equal the angular speed of the primary shaft of the gear change, the engine is set to supply a constant torque, the clutch is disposed in a predetermined position in order to transmit a constant torque greater than the torque supplied by the engine and the actual value of the torque transmitted by the clutch is calculated by subtracting the product of the moment of inertia of the engine and the angular acceleration of the drive shaft from the torque generated by the engine, the actual value of the torque transmitted by the clutch then being used to update the transmissibility function of the clutch.
    Type: Grant
    Filed: October 25, 2001
    Date of Patent: December 2, 2003
    Assignee: Magneti Marelli Powertrain, S.p.A.
    Inventors: Gabriele Serra, Antonino Aronica, Francesco Cimmino
  • Patent number: 6644325
    Abstract: A method of scarifying an interior surface of a pipe to remove contaminants and corrosion products, using a vehicle carrying an attached principal arm that is pivotable and that has a nozzle assembly at a distal end thereof. The nozzle assembly has a plurality of nozzles mounted at free ends of associated nozzle branches, the nozzle branches being rotatable or capable of oscillation about a distal end of the principal arm. One of the nozzle branches and the principle arm are extendible to position the nozzle assembly adjacent a first selected region of the interior surface of the pipe. The vehicle moves down the pipe with the nozzle assembly rotating or oscillating, and applying pressurized fluid to the nozzles so that they each emit a jet that scarifies the first selected region. Once the first selected region is scarified, the principal arm is pivoted to position the nozzle assembly adjacent a subsequent selected region to be scarified and the process is in part repeated.
    Type: Grant
    Filed: July 31, 2001
    Date of Patent: November 11, 2003
    Assignee: Mac & Mac Hydrodemoliton, Inc.
    Inventors: Gerard MacNeil, David MacNeil, Gordon MacNeil, Vernon Bose
  • Patent number: 6643969
    Abstract: Aiming apparatus rotatably attachable to optical sights e.g. conventional optical or laser sights which selectively permits the aiming of a weapon from a variety of cover positions. More specifically, aiming apparatus which may be field switched from an “aim from cover” mode to a conventional aim mode and which is connectable to a weapon sight in a 360 degree rotatable manner.
    Type: Grant
    Filed: September 6, 2002
    Date of Patent: November 11, 2003
    Assignee: Exponent, Inc.
    Inventor: Petras V. Avizonis, Jr.
  • Patent number: 6632011
    Abstract: A mixing apparatus 1 comprising a chamber 12 with at least one inlet 16 allowing entry of a solute and a liquid solvent, at least one outlet 52 allowing exit of a solution of said solute and solution, and at least a separator 22 having at least one generally upwardly facing surface 40 and one generally downwardly facing surface 38a, wherein said surfaces define a passageway 50 allowing the solution of the solute and the solvent to pass through and out of the chamber 12, and wherein undissolved solute is descendable along the generally upwardly facing surface 40a.
    Type: Grant
    Filed: June 23, 2000
    Date of Patent: October 14, 2003
    Assignee: Process Automation International Limited
    Inventors: Paul Henington, Kwok Wai Wen
  • Patent number: 6629639
    Abstract: A method and machine for reading and assigning optical codes to a succession of moving articles, each having at least one respective optical code, and the method including the steps of feeding the succession of articles, by a conveyor, through a read area; reading the optical codes within the read area by at least one optical reader, and determining, as each optical code is being read, the position in space of the optical code with respect to a given space reference; and assigning each optical code to the corresponding article by matching the position in space of the optical code with the position in space of the corresponding article.
    Type: Grant
    Filed: January 11, 2002
    Date of Patent: October 7, 2003
    Assignee: Datalogic S.p.A.
    Inventor: Moreno Bengala