Patents Represented by Attorney, Agent or Law Firm Lightbody Law Office
  • Method and apparatus for grinding rotors for hydraulic motors and apparatus therefor
    Patent number: 6425807
    Abstract: A fixture for selectively locating and retaining hydraulic gerotor rotors in position in respect to a grinding wheel, the fixture clamping the rotor between two oversized positioning rolls located in rotor lobe valleys on opposite sides of the rotor.
    Type: Grant
    Filed: April 29, 1999
    Date of Patent: July 30, 2002
    Assignee: White Hydraulics, Inc.
    Inventor: Hollis Newcomb White
  • Frequency converter system
    Patent number: 6421636
    Abstract: An apparatus and method is disclosed for converting an input signal having frequency related information sustained over a first duration of time into an output signal sustained over a second duration of time at substantially the same first frequency by adding or subtracting to the effective wave length of the output signal. Preferably, the signals are converted in digital form with samples added or subtracted to frequency convert the signal.
    Type: Grant
    Filed: May 30, 2000
    Date of Patent: July 16, 2002
    Assignee: Pixel Instruments
    Inventors: J. Carl Cooper, Steve Anderson
  • Hydraulic motor seal
    Patent number: 6394775
    Abstract: A seal for a hydraulic pressure device, which seal is located at the joint where one part circumferentially surrounds another part with both of the parts contacting a single adjoining surface, seal being in sealing contact with both parts and the adjoining surface.
    Type: Grant
    Filed: June 8, 2000
    Date of Patent: May 28, 2002
    Assignee: White Hydraulics, Inc
    Inventor: Hollis Newcomb White
  • Method and apparatus for destroying needles
    Patent number: 6384362
    Abstract: Biohazardous needles are destroyed by the application of an electrical arc that progressively destroys the needle and seals hollow needles. An elongate electrode that slopes up and away from the needle supports is used to strike an then progressively support the destructive arc.
    Type: Grant
    Filed: February 9, 2000
    Date of Patent: May 7, 2002
    Inventor: Joey B. Adkins
  • Delay tracker
    Patent number: 6351281
    Abstract: A delay tracker utilizes a special code on the tracked signal in order to recognize such signal and ascertain any delays associated therewith.
    Type: Grant
    Filed: July 21, 1998
    Date of Patent: February 26, 2002
    Inventor: James Carl Cooper
  • Increased capacity valving plates for a hydraulic motor
    Patent number: 6345969
    Abstract: A hydraulic gerotor motor utilizing the holes surrounding the main assembly bolts together with interconnecting radially extending passages so as to allow for the transfer of fluid axially through the device from a single fluid input hole to an area 360° surrounding a valve.
    Type: Grant
    Filed: June 28, 2000
    Date of Patent: February 12, 2002
    Assignee: White Hydraulics, Inc.
    Inventor: Hollis Newcomb White
  • Dressing wheel system
    Patent number: 6338672
    Abstract: An apparatus for providing a flat to stepped convex facing for grinding wheels used for the finished machining of parts, the apparatus including dressing wheels located only at the outer diameter of the Cubic-Boron-Nitride wheels to be dressed.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: January 15, 2002
    Assignee: White Hydraulics, Inc.
    Inventor: Hollis Newcomb White
  • Transmission shift key
    Patent number: 5592855
    Abstract: A shift key mechanism using a lateral pivot riding on milled ridges on the outer surface of a shift shaft in order to index a spring biased shift key to a gear location.
    Type: Grant
    Filed: January 16, 1996
    Date of Patent: January 14, 1997
    Assignee: MTD Products Inc.
    Inventors: Mike Weirich, Kurt E. Vogt
  • Snap on mower trail shield
    Patent number: 5447021
    Abstract: A trail shield for a lawn mower is disclosed having a snap on head section with the body extending symmetrically off the center line thereof.
    Type: Grant
    Filed: October 1, 1993
    Date of Patent: September 5, 1995
    Assignee: MTD Products Inc.
    Inventors: Gerhard Plamper, Daniel Martens
  • Apparatus and method for spacial scan modulation of a video display
    Patent number: 5424780
    Abstract: An apparatus and method is shown for modifying the presentation of pixels displayed or printed on a raster or matrix image or graphic display or printer, thereby increasing the apparent image quality. Means for deriving a plurality of neighboring pixels of the video signal, and means for determining pixel modification in response thereto, are also shown. Particular embodiments relating to increasing the apparent temporal and spatial resolution of raster scanned television devices are shown.
    Type: Grant
    Filed: September 13, 1993
    Date of Patent: June 13, 1995
    Inventor: James C. Cooper
  • Method for making a wobblestick
    Patent number: 5417528
    Abstract: A wobblestick and a method for forming teeth on a wobblestick wherein the minimum distance between the axis of the hob and the axis of the wobblestick remain substantially uniform throughout the forming of the teeth so as to form the teeth while producing a wobblestick having a uniform diameter throughout the length of the wobblestick.
    Type: Grant
    Filed: June 14, 1994
    Date of Patent: May 23, 1995
    Assignee: MTD Products Inc.
    Inventor: Harvey C. White
  • Slide actuation valve
    Patent number: 5337786
    Abstract: A slide valve is disclosed utilizing simple straight through drilled holes in the body of the valve in combination with a machined central fluid return passage and extensions off of the cylinder grooves in the valve slide.
    Type: Grant
    Filed: August 31, 1992
    Date of Patent: August 16, 1994
    Assignee: MTD Products Inc.
    Inventors: Robert Rush, Paul Fortlage