Patents by Inventor Heinz Bohn

Heinz Bohn 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).

  • Vacuum pump system
    Patent number: 4699570
    Abstract: A vacuum pump aggregate utilizes a microprocessor in conjunction with pressure and temperature sensors and motor control circuits to regulate the pressure by varying the speed of one or more vacuum pumps. Measured temperature and/or pressure values are compared with predetermined values by the microprocessor which in turn adjusts the speed of the motors.
    Type: Grant
    Filed: March 7, 1986
    Date of Patent: October 13, 1987
    Assignee: ITT Industries, Inc
    Inventor: Heinz Bohn
  • Liquid ring vacuum pump arrangement having minimized operating liquid consumption
    Patent number: 4692101
    Abstract: To minimize water consumption and to provide enhanced suction ability in a liquid ring vacuum pump the temperature of the exhaust liquid is measured and the amount of operating liquid supplied to the pump is varied.
    Type: Grant
    Filed: July 11, 1985
    Date of Patent: September 8, 1987
    Assignee: ITT Industries, Inc.
    Inventors: Werner Fink, Heinz Bohn
  • Control for liquid ring vacuum pumps
    Patent number: 4655688
    Abstract: A closed loop control is provided to control pressure and/or temperature in a system where one or more liquid ring vacuum pumps evacuate a recipient. The suction ability of the liquid ring vacuum pumps is controlled either by speed control, operating water temperature, switching-on and -off of pumps or bypass-air. Simultaneous control of all operating characteristics is achieved with a programmable electronic controller.
    Type: Grant
    Filed: May 30, 1985
    Date of Patent: April 7, 1987
    Assignee: ITT Industries, Inc.
    Inventors: Heinz Bohn, Werner Fink, Reinhold Luhmann