Wood-i beams and making of same
CA 1279972 C · Owner: Mitek Industries, Inc. · Inventors: Lines, Jerry L.
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 fabricated wood I-beam is formed with a pair of elongated chord members and planar web members interconnected to the chord members by specially shaped mechanically interlocking and adhesively secured joints. Elongated chord members are provided with longitudinally extending grooves which have cross sections shaped to provide a necked-down groove width at a groove depth intermediate the open mouth of the groove and the bottom of the groove. Opposite edges of the web members are shaped to provide cross sections with a necked-down thickness along each of such web edges and configured so that the shaped web edges substantially mate with the chord member grooves to …
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 February 12, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 12, 2008.
- 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.