Patents by Inventor Robert Toppel

Robert Toppel 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).

  • Time-control circuit for pneumatically operable devices
    Patent number: 5169480
    Abstract: A timing control circuit for a pneumatically-operable device, which is manually actuable so as to provide fluid flow to a revervoir through means of a variable flow control valve and a line-pressure-operable, normally-open valve disposed within the primary fluid flow, is disclosed. The pressure operable valve is closed at a sensed line pressure so as to interrupt fluid flow to the tool so as to terminate an operating cycle.
    Type: Grant
    Filed: February 8, 1990
    Date of Patent: December 8, 1992
    Assignee: Signode Corporation
    Inventors: Robert Toppel, David E. Crittenden