Patents by Inventor Robert Matthiessen

Robert Matthiessen 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).

  • Safety mechanism for materials handling system
    Publication number: 20060207300
    Abstract: A safety lock comprises a locking member (26, 28) which engages a support. An inner lock shaft (30a) actuates the locking member, the inner lock shaft having a first coupling face (35a) at one end thereof. An outer lock shaft (30b) has a second coupling face (35b) which engages the first coupling face when the inner lock shaft and the outer lock shaft are in respective engagement positions relative to each other. A coupling structure (18) moves to prevent engagement of said first coupling face with said second coupling face.
    Type: Application
    Filed: February 18, 2004
    Publication date: September 21, 2006
    Inventor: Robert Matthiessen