Vacuum deep-drawing device for producing upholstery including foam-backed covers
CA 1306331 C · Owner: Storch, Helmut · Inventors: Storch, Helmut
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A double-acting stretch frame is proposed for vacuum deep-drawing of covers in the course of producing foam upholstery, which has a narrow edge and preferably an additional sealing device so that, the applied cover can be assuredly retained after a certain amount of moving into the hollow mold chamber.
Read the whole patent
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 August 18, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 18, 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.