Patents by Inventor Hanspeter Christen

Hanspeter Christen 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).

  • Rotatable prism switch for guiding a reciprocal pusher chain along several paths
    Patent number: 5036773
    Abstract: The selective interconnection of tracks or slots coming together at a junction in a conveying system with push and pull operable conveying chains without return strands running in chain channels is accomplished by a switch constructed as a straight prism (21) mounted in a rotary manner. The prism has differently shaped chain channel portions (23', 23") on different ones of its sides. By rotating the prism (21) about its median longitudinal axis (22), that chain channel portion is positioned in the junction, which has the channel portions shaped to obtain the desired connection between the chain channel of selected entering and exiting tracks.
    Type: Grant
    Filed: February 27, 1990
    Date of Patent: August 6, 1991
    Assignee: SFT AG Spontanfordertechnik
    Inventor: Hanspeter Christen