Fastening device for roof panel joints
CA 1080935 A · Owner: H. H. Robertson Company · Inventors: Anderson, John W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fastening device for double-skin foam-core composite roof panels which present interfitted outer connectors spaced upwardly from the exterior surface of the panels and, interfitted inner connectors at the interior surface of the panels. The fastening device includes an upper end confined within the outer connectors, a base extending laterally of the upper end and overlying an exposed core surface and a, flange extending through the insulating core to the inner skin. A fastener extends through the base the insulating, core and the inner skin to secure the adjacent roof panels to a structural member.
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 July 8, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 8, 1997.
- 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.