Device for manufacturing expanded material
CA 1333045 C · Owner: Spath, Michael Max · Inventors: Spath, Michael Max
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device is disclosed for producing expanded material using cutting rollers of special design, in which the individual annular cutting rings on the cutting rollers are provided with notches in their lateral surfaces, and when the cutting roller is viewed from above, these notches are seen to be trapezoidal in shape. The invention relates furthermore to the special configuration of the stretching system wherein the strip-shaped, non-stretched material passing through is gripped laterally by two toothed belts while at the same time the material to be stretched runs up, in its centre section on a recirculating, element, such as a round-section belt running at an appropriate speed. This belt …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted November 15, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 15, 2011.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.