Patents by Inventor William Drot

William Drot 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 of checking the aseptic nature of washing before opening at least one door of a washing machine
    Patent number: 6523204
    Abstract: Method of checking the aseptic nature of washing before opening at least one door of the washing machine. A washing machine (10) is fitted with at least one door (14) capable of being opened into a clean room (20) at the end of each washing-rinsing-spin drying cycle. So as to avoid this opening operation being performed if the conditions for asepsis of the washing are not ensured, opening is conditional on an opening authorization signal being emitted by a control unit (36). This unit checks, successively, the introduction of water into the tank (22) of the machine, the presence in the tank of detergent products, heating of the water to a minimum temperature and the maintainence of this temperature for a predetermined time interval. If any one of these conditions is not fulfilled, the automatic opening signal is not emitted.
    Type: Grant
    Filed: October 23, 2000
    Date of Patent: February 25, 2003
    Assignee: Electrolux Systems de Blanchisserie
    Inventors: André Maziere, William Drot