Patents by Inventor Louis Salas

Louis Salas 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: 4134504
    Abstract: The lift is installed on the underside of the body of a van below the side doors. In retracted position it is entirely concealed below the van and does not obstruct normal usage of the van. Stationary portions of the device are fixed to the van frame. Slideable therein are an outer platform and a support frame for the outer platform is extended by a first hydraulic cylinder and linkage. Slideable relative to the outer platform is an inner platform. The inner platform extends and retracts with the outer platform by means of a cable drive. A pair of second hydraulic cylinders interconnect the outer platform and the support frame using four links which raise and lower both platforms in a parallelogram linkage.
    Type: Grant
    Filed: September 21, 1976
    Date of Patent: January 16, 1979
    Inventors: Louis Salas, Philip M. Salzman