Locking device
CA 1050230 A · Owner: Wise, William D. · Inventors: Wise, William D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure A panel locking device for Assembling and interlocking two double wall panels along their adjoining edges structurally integrates the locking device within the two panels and retains the panels tightly locked together under tension under all conditions of subsequent thermal expansion and contraction. The locking device incorporates a locking pin which is driven through a lug and over a channel. Each panel has a perimeter frame. One edge of the perimeter frame of one panel forms a male channel and the adjoining edge of the perimeter frame of the other panel forms a female channel. A lug is connected at one end to the web of the male channel. The outer end of the …
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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 March 13, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 13, 1996.
- 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.