Patents by Inventor Albert E. Hall

Albert E. Hall 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).

  • Panel placing device
    Patent number: 4150755
    Abstract: A panel placing device has a carriage frame on which are pivoted links connected pivotally to a panel frame adapted to support a panel. There are springs connected to the links and to the panel frame for urging the panel frame in one rotational direction. A lever pivoted on the carriage frame has a one way abutment with the panel frame and is moved by a tackle connected to the lever and to a rotary drum on the carriage frame. The lever is also pivoted on the carriage frame to swing aside. The drum is rotatable by a crank and is under control of a one way brake and a one way clutch.
    Type: Grant
    Filed: January 19, 1978
    Date of Patent: April 24, 1979
    Inventors: Lowell C. Trott, Albert E. Hall