Patents by Inventor Harold Willids Andersen

Harold Willids Andersen 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).

  • Method and apparatus for detecting and controlling a volatile substance
    Patent number: 4107976
    Abstract: In controlling a volatile substance, for example in controlling the release of ethylene oxide for use in a sterilization apparatus, the volatile substance is contained under pressure in a confined system and the latter is immersed in a fluid. The fluid is capable of absorbing the volatile substance such that if any of the volatile substance leaks from the confined systems into the immersion fluid, physicochemical changes will occur in the immersion fluid. These physicochemical changes may be sensed by various detecting devices which thereby serve to detect leaks of volatile substance from the confined system. The immersion fluid may be used as a heat transfer medium in heat exchange relationship with the confined system and desired associated control elements such as a pressure regulator to thereby prevent undesirable condensation of the volatile substance.
    Type: Grant
    Filed: April 2, 1976
    Date of Patent: August 22, 1978
    Assignee: H. W. Andersen Products Inc.
    Inventors: Harold Willids Andersen, Charles H. Harrison
  • Method and apparatus for controlling a volatile substance
    Patent number: 3981701
    Abstract: In controlling a volatile substance, for example in controlling the release of ethylene oxide for use in a sterilization apparatus, the volatile substance is contained under pressure in a confined system and the latter is immersed in a fluid. The fluid is capable of absorbing the volatile substance such that if any of the volatile substance leaks from the confined systems into the immersion fluid, physicochemical changes will occur in the immersion fluid. These physicochemical changes may be sensed by various detecting devices which thereby serve to detect leaks of volatile substance from the confined system. The immersion fluid may be used as a heat transfer medium in heat exchange relationship with the confined system and desired associated control elements such as a pressure regulator to thereby prevent undesirable condensation of the volatile substance.
    Type: Grant
    Filed: August 10, 1973
    Date of Patent: September 21, 1976
    Assignee: H.W. Andersen Products Inc.
    Inventors: Harold Willids Andersen, Charles H. Harrison