Circular duct connector
CA 1319379 C · Owner: Ductmate Industries, Inc. · Inventors: Arnoldt, Peter J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pair of frame members are secured to the ends of pair of adjacent generally circular ducts. Each frame member has a generally circular configuration and has an inner vertical wall an outer vertical, wall. The outer vertical wall is connected to a sloped rigidifying portion which extends outwardly from the inner vertical wall. Both the inner and outer vertical walls have horizontally extending flanges which are in abutting relation and their end portions are clampingly engaged. The frame members have a circumferential dimension less than the circumferential dimension of the duct member so that a gap is formed in the circular frame member. The frame members are positioned on the duct end …
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 June 22, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 22, 2010.
- 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.