Patents by Inventor Robert R. Klingensmith

Robert R. Klingensmith 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).

  • Patent number: 4400696
    Abstract: A device for enabling animals to attract attention of a keeper thereof when the animal desires to obtain entrance into a house or other building comprising a door mounted contact and wire feed through element, and adjustable hinged outside door mounted panel member, and adjustable contact member mounted on the hinged panel member for contact with the door mounted contact when the panel member is actuated, adjustable tension means for normally maintaining the hinged panel member in an unactuated contact position, an inside door mounted container provided with appropriate electrical energization, wiring, and both visual and audible attention attracting elements, and a multiple position switch for permitting selection of the desired attention attracting element when the panel member is actuated by an animal.
    Type: Grant
    Filed: April 29, 1981
    Date of Patent: August 23, 1983
    Inventor: Robert R. Klingensmith