Device for deploying tubular, flexible, sheet material, and methods of utilization thereof
CA 1302959 C · Owner: Stirling, William · Inventors: Stirling, William
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, A compressed (e.g. accordian pleated) assembly of tubular, flexible, sheet material (preferably plastic material), is deployed to form an extended tube by a device that consists essentially of an arched rigid framework with a skin of sheet metal extending over its upper part. The compressed assembly of sheet material is mounted on a forward portion of the device so that, such material can be deployed into an extended tube at the rear of the device by pulling the latter forwardly along the ground, the free end of the tube having been suitably anchored at the starting location. Cooperating surfaces on the device are arranged to inhibit the deployment sufficiently to ensure tension …
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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 June 9, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 9, 2009.
- 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.