Patents by Inventor David M. Rau, III

David M. Rau, III 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).

  • Electrical locking mechanism
    Patent number: 4355830
    Abstract: An electrically actuated locking mechanism is disclosed which employs a reciprocating lock bolt actuated by a solenoid in response to a momentary electrical signal. The lock bolt engages a latch means when extended to the locking position, and the latch means may be disengaged to unlock the device by either electrically or mechanically actuated release means.
    Type: Grant
    Filed: February 25, 1980
    Date of Patent: October 26, 1982
    Assignee: CNI Incorporated
    Inventor: David M. Rau, III
  • Retractable knife
    Patent number: D263020
    Type: Grant
    Filed: January 22, 1980
    Date of Patent: February 16, 1982
    Inventor: David M. Rau, III
  • Rotary sprinkler
    Patent number: D270274
    Type: Grant
    Filed: November 3, 1980
    Date of Patent: August 23, 1983
    Assignee: Capabilities Unlimited, Inc.
    Inventors: David M. Rau, III, Neil W. Sullivan