Patents by Inventor William Dall Hopkins

William Dall Hopkins 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).

  • Pneumatically actuated high power RF switch
    Patent number: 3997743
    Abstract: The switch includes a mounting plate supporting two high voltage RF contacts in spaced relation with each other and with the mounting plate. A shorting bar is provided between the mounting plate and the two contacts in a switching relation with the two contacts. The shorting bar is actuated by a first pneumatic actuating arrangement supported by the mounting plate to make and break a connection between the shorting bar and both of the contacts. A grounding arrangement actuated by a second pneumatic actuating arrangement grounds one of the two contacts when no connection exists between the shorting bar and both of the contacts and ungrounds the one of the two contacts when a connection exists between the shorting bar and both of the contacts.
    Type: Grant
    Filed: May 1, 1975
    Date of Patent: December 14, 1976
    Assignee: International Telephone and Telegraph Corporation
    Inventors: Frederick Richard Hock, William Dall Hopkins