Patents by Inventor Gustav K. Frohn

Gustav K. Frohn 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).

  • Power screw driver with a ratchet wheel having finely graduated toothing
    Patent number: 4709600
    Abstract: The power screw driver has a power arm (2) and a reaction arm (1), as well as a ratchet wheel (7) and a multi-toothed pawl (8), that meshes with this ratchet wheel and that meshes with several teeth of the ratchet wheel (7) when the power arm (2) is in a rotational direction and when it is in the other rotational position, the pawl slips over the teeth of the ratchet wheel (7). Finally a hydraulic power cylinder is provided between the two arms (1, 2).The power arm (2) has a drive head (9), which is inside the cylinder bore hole (11) and engages in a recess (14) of the piston (13). The cylinder bore hole runs obliquely, in particular at a right angle to the power arm (2).
    Type: Grant
    Filed: October 25, 1985
    Date of Patent: December 1, 1987
    Assignee: Applied Power, Inc.
    Inventors: Hans-Bernd Mierbach, Gustav K. Frohn, Olaf Blockisch