Accessible ceiling grid system
CA 2507828 C · Owner: Owens Corning Intellectual Capital, Llc · Inventors: Alter, Harry A.; Kliegle, Dennis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A grid system (20) for torsion spring mounting of aluminum-framed panels (22) is provided which includes a plurality of main grid beams (25) and spacer bars (40). The main grid beams support a side load mounting clip (33) formed with a slot (39) in the side of the side load mounting clip to engage a torsion spring (30) held by a spring retainer clip (35) such that the panel is supported by the torsion spring. Disengagement of the torsion springs lowers the panels and permits access to the ceiling grid system above the panel members. In a preferred embodiment, the panel has a multifaceted profile including an edge surface (76) that abuts a corresponding edge surface on an adjacent …
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 November 12, 2003 and granted October 2, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 12, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 12, 2025.
- 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.