Patents by Inventor Stephen M. Rohrbaugh

Stephen M. Rohrbaugh 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: 5927765
    Abstract: A dogging device for securing a panic exit and actuation device in an unlatched condition. The dogging device uses a U-shaped spring clip to secure a base plate, a dogging adapter and a dogging hook together. The base plate, dogging adapter and dogging hook are rotated about a common axis by an operator, which can either be a hex shaft or a cylinder adapter operated by a keyed lock, from a disengaged position to an engaged position where the dogging hook engages a control rod of the exit device thereby holding, or dogging, the exit device in an unlatched condition. An over center spring is used to bias the dogging hook into either the engaged or the disengaged position.
    Type: Grant
    Filed: December 10, 1997
    Date of Patent: July 27, 1999
    Assignee: Von Duprin, Inc.
    Inventors: Marlin D. Austin, Richard B. Cohrs, Jr., Stephen M. Rohrbaugh