Patents by Inventor Robert J. Lacombe

Robert J. Lacombe 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).

  • Vibration transducer device for stringed musical instruments
    Patent number: 5723805
    Abstract: A vibration transducer device for stringed musical instrument comprising a magnetic field generating bar, metal strings of the musical instrument and an electronic circuit is described herein. The electronic circuit amplifies a minute electric voltage induced in the metallic strings by the magnetic field when the metallic strings are vibrating.
    Type: Grant
    Filed: July 12, 1996
    Date of Patent: March 3, 1998
    Inventor: Robert J. Lacombe
  • Furnace combustion zone temperature control method
    Patent number: 5018458
    Abstract: An improved method for controlling combustion zone temperature in a furnace independent of flue gas oxygen content is disclosed. The method comprises supplying a carrier gas containing a fine mist of liquid water droplets to the furnace combustion zone to control the maximum temperature within the combustion zone. The invention is applicable to both multiple hearth furnaces and fluidized bed furnaces, protecting the refractory furnace lining from damage.
    Type: Grant
    Filed: September 12, 1990
    Date of Patent: May 28, 1991
    Assignee: Zimpro Passavant Environmental Systems, Inc.
    Inventors: Glover C. McIntyre, Robert J. Lacombe, Russell G. Forbess