Collapsible shelter
CA 2011491 C · Owner: Peruski, Robert H. · Inventors: Peruski, Robert H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A collapsible frame for a portable shelter including a plurality of cover supporting frame bars pivotally mounted at one end on a central hub. The hub includes a pair of vertically spaced apart plates. The frame bars include inverted L-shaped support bars including a generally vertical ground supported leg and an integral generally horizontal base received between the plates. The terminal end of the horizontal base is pivotally mounted in an aperture provided in one of the plates. One of the plates also includes a plurality of recesses which receive the horizontal base in one position of rotation about its terminal end. A spring mechanism is provided for urging the plates together to hold …
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 March 5, 1990 and granted May 24, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 5, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 5, 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.