Patents by Inventor John L. Devitt

John L. Devitt 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).

  • Publication number: 20040247995
    Abstract: The present invention relates generally to devices that are adapted to store energy. More specifically, one embodiment of the present invention is a battery that employs a plurality of compartments which hold cell elements that generate electricity through an electrochemical reaction. In addition, one embodiment of the present invention employs arcuate end compartments that are adapted to hold a non-compressible fluid that aids in the reaction of internal pressure loads generated by the electrochemical reaction. This fluid in one embodiment may be put in compression during manufacturing of the battery. Thus, the present invention enables the internal compartment walls to impart sufficient compression on the cell elements to enhance the battery's efficiency and useful life.
    Type: Application
    Filed: June 7, 2004
    Publication date: December 9, 2004
    Inventor: John L. Devitt
  • Patent number: 4645094
    Abstract: A fluid dispenser for dispensing liquid detergents, soaps and germicides. A pressure plate imparts a squeezing force to a flexible reservoir containing the liquid material to force the material therefrom. A battery operated photoelectric device is positioned adjacent the dispensing valve which is opened for a timed period upon locating an object such as a hand, near the photoelectric device. Also, a device is provided to control the power to the photoelectric device upon sensing the condition of the ambient room lighting.
    Type: Grant
    Filed: January 31, 1986
    Date of Patent: February 24, 1987
    Assignee: Calgon Corporation
    Inventors: John R. Acklin, Lee W. Bush, Joseph J. Danna, John L. Devitt, George A. Rauh
  • Patent number: 4338978
    Abstract: A seawater activated battery plate, and a method of making the same, utilizing an electrically conducting grid and an active reducible material primarily constituting lead chloride adhering to the grid such that the grid is exposed at a surface of the active material, the material adjacent the grid primarily constituting porous lead and a metal chloride. The battery plate is characterized by its inexpensive method of manufacture, its quick activation even in cold seawater, its absence of significant voltage peaking at initial discharge and uniform voltage generation during discharge.
    Type: Grant
    Filed: October 28, 1980
    Date of Patent: July 13, 1982
    Assignee: Sparton Corporation
    Inventors: John L. Devitt, Douglas E. Johnson, Robert S. Willard
  • Patent number: 4262069
    Abstract: A seawater activated battery plate, and a method of making the same, utilizing an electrically conducting grid and an active reducible material primarily constituting lead chloride adhering to the grid such that the grid is exposed at a surface of the active material, the material adjacent the grid primarily constituting porous lead and a metal chloride. The battery plate is characterized by its inexpensive method of manufacture, its quick activation even in cold seawater, its absence of significant voltage peaking at initial discharge and uniform voltage generation during discharge.
    Type: Grant
    Filed: March 17, 1980
    Date of Patent: April 14, 1981
    Assignee: Sparton Corporation
    Inventors: John L. Devitt, Johnson, Douglas E., Robert S. Willard
  • Patent number: 4052534
    Abstract: Various improved battery vent plugs utilizing a slit resilient acid-resistant diaphragm bi-directional valve which opens temporarily automatically under gaseous pressure serve to minimize battery fluid loss.
    Type: Grant
    Filed: May 3, 1973
    Date of Patent: October 4, 1977
    Assignee: General Battery Corporation
    Inventor: John L. Devitt