Plastic film retaining and tensioning element
CA 1247838 A · Owner: Serac Limited · Inventors: Walker, David P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A clip fixing for retaining thin plastics film material in tension formed of a pair of elongate channel members removably assembled together in inverted relationship. The film material passes through the fixing between opposed cooperating complementary sinuous surfaces of the flanks of the channel members and in so doing passes over surface portions of the fixing at the entrance to the cooperating surfaces of each flank pair which are, exposed to direct ultra-violet radiation. To avoid degradation of the plastics at these surface portions a, cover or shield is provided on one of the channel members to cover or shield these surface portions from such direct radiation. The cover or shield may …
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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 January 3, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 3, 2006.
- 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.