Quickly erectable, quickly collapsable, self supporting portable structure
CA 2065019 C · Owner: Spring Form, Inc. · Inventors: Norman, Lowell Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Quickly erectable quickly collapsible, self supporting portable structures (100) that are self expandable with little or no effort by the user, which in their fully expanded upstanding configuration are self supporting. The fully expanded upstanding structure can be quickly collapsed into a stack of side members (145) and then coiled into a pack (160) with little effort by the user. The structures can be used as tents, shelters pavilions and, automobile carports. In general the portable structures have a set of at least three side members (102) each having a flexible frame (106), a side panel (108), a pocket (110) joined to the panel by stitching (112). The frame causes the side members …
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
- Filed August 17, 1990 and granted September 27, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 17, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 17, 2012.
- 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.