Patents by Inventor S. Tom Thawley

S. Tom Thawley 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).

  • Downhole digital power amplifier for a measurements-while-drilling telemetry system
    Patent number: 4468665
    Abstract: A downhole digital power amplifier comprises a device which, through digital means, provides a sinusoidal, variable frequency, variable power and variably phase-shift modulated output for the transmission of data from a downhole sensor arrangement to an uphole receiver. Selection and variation of frequency, power and modulation are made through digital inputs. The device provides these functions at extra low frequencies (ELF) low-to-high power output, and varying phase-shift keying.
    Type: Grant
    Filed: January 30, 1981
    Date of Patent: August 28, 1984
    Assignee: Tele-Drill, Inc.
    Inventors: S. Tom Thawley, Craig M. Scott
  • Heat sink/retainer clip for a downhole electronics package of a measurements-while-drilling telemetry system
    Patent number: 4400858
    Abstract: A heat sink/retainer clip (54) capable of resiliently holding objects, such as printed circuit boards, in tubular members, such as telemetering tools. The heat sink/retainer clip comprises two portions (56, 60) which extend across the tube from opposite sides thereof and two portions (58, 62) which engage the inner periphery of a tube (48). The clip is made of a resilient material, and the outer radii of the second two portions is slightly greater than the inner radius of the tube, so that the clip is distorted by the tube, during assembly, to resiliently grip the object between the first two portions.
    Type: Grant
    Filed: January 30, 1981
    Date of Patent: August 30, 1983
    Assignee: Tele-Drill Inc,
    Inventors: John J. Goiffon, S. Tom Thawley