Patents by Inventor Raymond Stanley Lieber

Raymond Stanley Lieber 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: 4060160
    Abstract: A safety gate, made of electrically conducting and non-conducting materials, is mounted to the ram, or similar instrument, of a power operated machine and is made to be free floating in at least one direction. The means of powering the machine may be electrical, mechanical, hydraulic, or pneumatic; however, there must be an electrical source available. The gate contains a means of sensing the presence of the workpiece and foreign objects which is powered by the electrical source; this means is connected to the machine in such a manner that the machine will be caused to stop or reverse if a foreign object, such as a human extremity, is sensed. A stationary guard shields those danger areas on the machine not protected by the safety gate.
    Type: Grant
    Filed: November 17, 1975
    Date of Patent: November 29, 1977
    Inventor: Raymond Stanley Lieber