Patents by Inventor Roy D. Hollopeter

Roy D. Hollopeter 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).

  • Automatic precision liquid loading control method
    Patent number: 4805672
    Abstract: A fixed fluid control system for loading fluids into sealed tanks includes pressure sensing conduits in a mobile vehicle and fixed fluid controls. In the vehicle are first and second pressure sensing conduits having portions within the sealed tank positioned at the top and bottom of the tank. The pressure sensing conduits have exterior portions to which are detachably coupled additional pressure sense lines. The additional pressure sensing conduits are coupled to a differential pressure to current converter within the fixed fluid control system. The converter produces a current signal proportional to the pressure difference between the two sense lines. When this current reaches a predetermined high level, the supply of fluid to the sealed tank is discontinued.
    Type: Grant
    Filed: November 12, 1986
    Date of Patent: February 21, 1989
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Bruce J. Berrettini, Donald P. Bucci, Roy D. Hollopeter
  • Automatic precision liquid loading control system
    Patent number: 4649968
    Abstract: A fixed fluid control system for loading fluids into sealed tanks includes pressure sensing conduits in a mobile vehicle and fixed fluid controls. In the vehicle are first and second pressure sensing conduits having portions within the sealed tank positioned at the top and bottom of the tank. The pressure sensing conduits have exterior portions to which are detachably coupled additional pressure sense lines. The additional pressure sensing conduits are coupled to a differential pressure to current converter within the fixed fluid control system. The converter produces a current signal proportional to the pressure difference between the two sense lines. When this current reaches a predetermined high level, the supply of fluid to the sealed tank is discontinued.
    Type: Grant
    Filed: January 10, 1985
    Date of Patent: March 17, 1987
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Bruce J. Berrettini, Donald P. Bucci, Roy D. Hollopeter