Patents by Inventor Carl J. Campagna

Carl J. Campagna 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: 5886312
    Abstract: A liquid level sensor for a tank includes coaxial inner and outer tubes having lower ends extending into the tank and upper ends projecting from the tank, with the upper end of the inner tube projecting from the outer tube and disposed a known distance from the top of the tank. A switch assembly includes a switch disposed in the inner tube and operable in response to proximity to a switch actuator which is carried by a float encircling the outer tube and movable therealong with the liquid level, the switch being connected across a pair of electrical conductors extending from the upper end of the inner tube. An indicator strip extends lengthwise of the conductors and is held thereagainst by a transparent sleeve, the strip having indicia indicating distance to the switch. Plastic cable ties extend through openings in the inner tube and snugly hold the switch assembly against the inner tube to permit manual axial movement of the switch assembly while preventing inadvertent movement thereof.
    Type: Grant
    Filed: September 25, 1997
    Date of Patent: March 23, 1999
    Assignee: Midland Manufacturing Corp.
    Inventors: Gaston C. Barmore, Jr., Joseph C. Fiore, Norman A. Magiera, Robert H. Dean, Jerzy Drazkowicz, Carl J. Campagna, Ralph G. Portis