Patents Represented by Attorney, Agent or Law Firm Willaim W. Haefliger
  • Retrievable, formation resistivity tool, having a slotted collar
    Patent number: 6483310
    Abstract: A sonde is movable lengthwise in and relative to tubular structure such as a drill collar; slits extend through the tubular structure; and antennae coils on the sonde come into registration with the slits, for transmitting electromagnetic energy into the underground formation via certain slits, and for receiving such transmitted energy back through other of the slits, for processing.
    Type: Grant
    Filed: October 17, 2000
    Date of Patent: November 19, 2002
    Assignee: Scientific Drilling International
    Inventor: Richard A. Meador
  • Drum pedal movement responsive device to produce electrical signal
    Patent number: 4819536
    Abstract: A foot-operated, bass drum pedal assembly is provided, and it includes: a base in the form of a metal plate, a first drum beater, a support for the beater mounted on the base, and a pedal pivotally mounted to the base and operatively connected to the beater to pivot same as the pedal is pivoted by the drummer's foot, and structure located proximate the pedal to sense downward movement of the pedal to predetermined downward position, and to produce an electrical signal usable to effect production of phenomena corresponding to a drum beat.
    Type: Grant
    Filed: December 14, 1987
    Date of Patent: April 11, 1989
    Inventor: Donald G. Lombardi