Fire rated ceiling runner system with expansion accommodating means
CA 1095682 A · Owner: United States Gypsum Company · Inventors: Balinski, Henry A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
APPLICATION FOR LETTERS PATENT FOR, "FIRE RATED CEILING RUNNER SYSTEM WITH EXPANSION ACCOMMODATING MEANS", ABSTRACT A suspended ceiling grid system is disclosed which can accommodate longitudinal expansion of inverted tee runners upon exposure to heat. Buckling is prevented in the inverted tee runners which continue to support ceiling tile to thereby provide a fire rated grid system. Slidable trim caps engage inverted tee flanges to provide a continuous decorative appearance along the bottom otherwise exposed portions of the runners.
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 17, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 17, 1998.
- 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.