Patents by Inventor Richard P. Wagner

Richard P. Wagner 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 door protection
    Patent number: 4493164
    Abstract: This invention is a method and an apparatus by which a barrier is automatically placed before partially opened doors, which barrier is automatically removed when the door is fully opened and safe for travel. The invention includes means to detect when the door is fully opened and thereupon to activate barrier removal means, together with barrier placement means automatically activated at any time when the door is not fully opened.
    Type: Grant
    Filed: August 12, 1982
    Date of Patent: January 15, 1985
    Inventor: Richard P. Wagner
  • Method and apparatus for door protection
    Patent number: 4356668
    Abstract: This invention is a method and an apparatus by which a barrier is automatically placed before partially opened doors, which barrier is automatically removed when the door is fully opened and safe for travel. The invention includes means to detect when the door is fully opened and thereupon to activate barrier removal means, together with barrier placement means automatically activated at any time when the door is not fully opened.
    Type: Grant
    Filed: October 20, 1980
    Date of Patent: November 2, 1982
    Inventor: Richard P. Wagner