Patents by Inventor Paul Richardson

Paul Richardson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6251825
    Abstract: A new re-transfer intermediate sheet comprising a supporting substrate having on one side an imageable layer and on the other a backcoat, is provided for thermal transfer printing of an article having a dye-receptive surface, by thermal retransfer. This method of printing comprise the steps of pressing together a dye-donor sheet and the imageable layer of the retransfer intermediate sheet, forming an image in the imageable layer by thermal transfer printing, pressing the thus-formed image-containing layer against the dye-receptive surface of the article, and applying heat to the intermediate sheet to effect retransfer of the image to the dye-receptive layer of the article. To improve protection against the physical conditions experienced in such retransfer process, the backcoat of the new intermediate sheet comprises a polymeric binder and a high loading of protective filler, preferably in amount of 100% to about 250% by weight of the binder.
    Type: Grant
    Filed: August 16, 1999
    Date of Patent: June 26, 2001
    Assignee: Imperial Chemical Industries PLC
    Inventor: Christopher Paul Richardson
  • Patent number: 6243369
    Abstract: A bidirectional digital data communication system which generate phase coherent upstream clock and carrier signals from recovered downstream clock generated from a master clock in a central unit. The preferred species uses any downstream clock rate and generates a phase coherent upstream clock so long as the two clock rates can be related by the ratio M/N where M and N are integers. One embodiment uses an MCNS downstream and an SCDMA upstream and uses MNCN timestamp messages in the downstream to achieve an estimate of RU frame offset prior to establishing frame alignment using a ranging process. The use of timestamp messages to estimate the offset is aided by a low jitter method for inserting timestamp messages by avoiding straddling of MPEG packet headers with the sync message. Clock slip is detected by counting upstream clock cycles over a predetermined downstream clock interval and the RU transmitter is shut down if slip is detected to prevent ISI interference from misaligned codes.
    Type: Grant
    Filed: May 6, 1998
    Date of Patent: June 5, 2001
    Assignee: Terayon Communication Systems, Inc.
    Inventors: Michael Grimwood, Jim Knittel, Paul Richardson, Selim Shlomo Rakib, Paul Alan Lind, Doug Artman
  • Patent number: 6052421
    Abstract: A method for separating a desired signal from an interfering signal, which is particularly useful when the desired signal is substantially weaker than the interfering signal, includes the steps of providing a combined signal which contains both a desired signal and an interfering signal; performing a Fourier transform upon the combined signal; providing a reference function which is a function of the amplitude, frequency and phase of the interfering signal; performing a Fourier transform upon the referenced function; multiplying the real components of the Fourier transform of the combined signal by the real components of the Fourier transform of the reference signal to form a product; and subtracting the product from the Fourier transform of the combined signal to form transformed data less interference, i.e., the desired signal.
    Type: Grant
    Filed: September 28, 1998
    Date of Patent: April 18, 2000
    Assignee: Northrop Grumman Corporation
    Inventors: David Livingstone Richardson, Mark Douglas Hischke, Gregory Paul Richardson
  • Patent number: 5931195
    Abstract: A motor vehicle power steering gear has a proportional control valve with a cylindrical valve member riding rotatably on a spool shaft and connected thereto through a torsion bar. Electromagnetic apparatus for varying the magnitude of the effective restoring torque of the torsion bar comprises a stationary exciting coil, an inner pole member comprising an extension of the cylindrical valve member having a plurality of outwardly facing teeth and an outer pole member fixed on the spool shaft for rotation therewith and having an equal plurality of opposing inwardly facing teeth, the teeth defining an air gap axially beside the coil.
    Type: Grant
    Filed: September 24, 1997
    Date of Patent: August 3, 1999
    Assignee: General Motors Corporation
    Inventors: Joel Edward Birsching, Thomas Arthur Perry, Michael Paul Richardson
  • Patent number: 5738182
    Abstract: A motor vehicle power steering gear has a proportional control valve with a cylindrical valve member riding rotatably on a spool shaft and connected thereto through a torsion rod. Electromagnetic apparatus for varying the magnitude of the effective restoring torque of the torsion rod comprises a stationary exciting coil, an extension of the cylindrical valve member having a plurality of outwardly facing teeth and an outer pole member fixed on the spool shaft for rotation therewith and having an equal plurality of opposing inwardly facing teeth, the teeth defining an air gap axially beside the coil. The cylindrical valve member is formed with a pair of sleeve surfaces for riding on the spool shaft surface with a small controlled clearance providing a hydraulic seal; and faces of the teeth of the cylindrical valve member and outer pole member are both machined after formation of the members for accurate control of the radial distance thereof from the spool shaft surface and thus of the air gap.
    Type: Grant
    Filed: July 17, 1996
    Date of Patent: April 14, 1998
    Assignee: General Motors Corporation
    Inventors: Joel Edward Birsching, Michael Paul Richardson, Thomas Arthur Perry
  • Patent number: 5700927
    Abstract: Disclosed is a substantially pure DNA encoding a Tbc1 polypeptide; a substantially pure Tbc1 polypeptide; and methods of using such DNA to express Tbc1 in leukemic stem cells and treat certain leukemias. Also disclosed are methods for diagnosing other leukemias and spermatogenesis disorders by assaying for Tbc1 expression.
    Type: Grant
    Filed: December 23, 1994
    Date of Patent: December 23, 1997
    Assignee: The Children's Medical Center Corporation
    Inventors: Leonard Zon, Paul Richardson
  • Patent number: 5539488
    Abstract: A rotary shutter for controlling an optical path and including a rotating disk having an opening. A sensor monitor is representative of disk rotation, while a blocking element is selectively positioned within and without the optical path dependent upon the angular position of the disk and the desire to expose the light sensitive medium.
    Type: Grant
    Filed: March 16, 1995
    Date of Patent: July 23, 1996
    Assignee: Lucht, Inc.
    Inventors: Paul Erickson, David Shelander, Paul Richardson, John Evers
  • Patent number: 5400863
    Abstract: A power vacuum truck having a movable roof to accommodate expanding vacuum bags, and a method of raising the roof are disclosed. The power vacuum truck utilizes a hydraulic pump to drive a fan and compressor in order to eliminate mechanical linkages and the concomitant breakdown and maintenance associated therewith, and eliminates holes in the roof previously necessary to accommodate the expandable vacuum bags. An vehicle having an automatic transmission can be used.
    Type: Grant
    Filed: April 9, 1993
    Date of Patent: March 28, 1995
    Inventor: Paul A. Richardson
  • Patent number: 5156571
    Abstract: A homokinetic coupling wherein the torque transmitting elements include spherical elements flattened at two mutually opposed points, the flattened elements being in contact with the side walls of open slots within the wall of the hollow spherical element of the inner coupling member.
    Type: Grant
    Filed: March 13, 1991
    Date of Patent: October 20, 1992
    Assignee: SKF Industrial Trading & Development Co., B.V.
    Inventors: Hendrikus J. Kapaan, Stanislaw Kruk, Paul Richardson, Wilhelm L. F. van Wijk
  • Patent number: 4516633
    Abstract: In the mining of various minerals from the earth, large mining shafts extending from the surface down to the deposited mineral layers or seams in the earth can be provided through the use of large diameter bore hole drilling equipment. With the drilling equipment stationed on the surface of the earth, a drilling member is drilled down into the earth for forming a shaft in excess of 10 feet to a depth of at least 2000 feet. As the earth is broken up during the drilling operation, the broken fragments are removed from the drilled hole by a reverse circulation drilling operation. During the drilling operation, the drilling bit is maintained in proper alignment with the shaft being drilled by the use of non-rotating stabilizers having an outer diameter substantially equal to the diameter of the hole being drilled.
    Type: Grant
    Filed: September 18, 1981
    Date of Patent: May 14, 1985
    Assignee: Santa Fe International Corporation
    Inventors: Paul Richardson, Daniel C. Albers, David A. Whitley
  • Patent number: 4460293
    Abstract: In the mining of minerals from the earth, it is necessary to drill deep bore holes typically between 3000 and 6000 feet in the earth. In order to protect those entering the hole for additional mining operations, after drilling the hole, the hole is lined with a stack of specially constructed lining segments. These segments are formed of either prestressed concrete or steel. The segments are lowered one at a time into the bore hole so as to build up a stack within the hole, thereby lining the hole. The segments are carried to the hole on a transporter and then lowered by the transporter into the hole. Guide cables are threaded through guide conduits provided within the segments so as to maintain the orientation of such segments during the operation.
    Type: Grant
    Filed: July 3, 1980
    Date of Patent: July 17, 1984
    Assignee: Santa Fe International Corporation
    Inventors: Paul Richardson, David A. Whitley
  • Patent number: 4330155
    Abstract: Minerals, in particular coal, that have been deposited in layers or along seams in the earth can be mined utilizing a large diameter bore hole drilling equipment. With the drilling equipment stationed on the surface of the earth, a drilling member is drilled down into the earth along the seam of the mineral deposit. If the mineral deposit extends at an angle to the earth, i.e. less than 90.degree., the drilling operation is conducted so as to drill at a similar angle to the earth. As the mineral deposits are broken up during the drilling operation, the broken fragments are removed from the drilled hole. After drilling has occurred for a certain distance in a forward direction, a creeping effect is induced in portions of the side walls of the drilled hole. The drilling member is then retracted from the drilled hole in such a manner so as to drill out any mineral fragments in the hole of the drilling member. These mineral fragments are then removed from the hole as the drilling member is retracted.
    Type: Grant
    Filed: March 26, 1980
    Date of Patent: May 18, 1982
    Assignee: Santa Fe International Corporation
    Inventors: Paul Richardson, David A. Whitley