Patents by Inventor Rolf Gurr

Rolf Gurr 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).

  • Cooling device for liquid cooling of thermoplastic extrusions and a calibrating device for thermoplastics extrusions incorporating such a cooling device
    Patent number: 4054148
    Abstract: A cooling device for liquid cooling of thermoplastics extrusions in an enclosed calibrating chamber comprises a plurality of liquid jets for spraying liquid into the calibrating chamber, a liquid receptacle for positioning beneath the calibrating chamber for receiving liquid sprayed into the calibrating chamber by the liquid jets, a pump for supplying liquid from the liquid receptacle to the liquid jets and monitoring devices for controlling the pump to maintain a liquid level selectively within the liquid receptacle or above the level of the liquid jets in the calibrating chamber. The invention also includes a calibrating device for calibrating thermoplastics extrusions and incorporating a cooling device as above mentioned.
    Type: Grant
    Filed: October 6, 1976
    Date of Patent: October 18, 1977
    Inventor: Rolf Gurr