Patents by Inventor Donald L. Mulcaster

Donald L. Mulcaster 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: 5050504
    Abstract: A novel baby walker with a safety track feature, involving cooperating and complementary track and securement structure which secure said walker movably and rollably by cooperating wheels, with respect to the track, is disclosed. The track comprises an upwardly-extending shaped protuberance for movable securement thereto of complementary locking portions on the walker and a relatively flat outwardly-extending portion or platform for contact with wheels associated with the locking portions, so that the walker may be movably and removably secured to said track and moved along the track by the occupant of the vehicle by wheels riding on the flat portion of said track on the one side and by wheels riding on the floor on the other side of said walker. In a preferred embodiment, spring-biased track lock-on levers having complementary track lock-on hook portions are provided for convenient attachment to and detachment from the track.
    Type: Grant
    Filed: July 28, 1988
    Date of Patent: September 24, 1991
    Inventor: Donald L. Mulcaster
  • Patent number: 4795151
    Abstract: A novel baby walker with a safety track feature, involving cooperating and complementary track and securement device which secures said walker movably and rollably by the use of cooperating wheels, with respect to the track, is disclosed. The track comprises an upwardly-extending shaped protuberance for movable securement thereto of a complementary locking device on the walker and a relatively flat outwardly-extending portion or platform for contact with wheels associated with the locking device, so that the walker may be movably and removably secured to said track and moved along the track by the occupant of the vehicle with the wheels riding on the flat portion of said track on the one side and by wheels riding on the floor on the other side of said walker. In a preferred embodiment, spring-biased track lock-on levers having complementary track lock-on hook portions are provided for convenient attachment to and detachment from the track.
    Type: Grant
    Filed: September 30, 1987
    Date of Patent: January 3, 1989
    Inventor: Donald L. Mulcaster