Flush mount whole house fan shutter
CA 1295508 C · Owner: Shawcross, James P. · Inventors: Shawcross, James P.; Tomiser, Frank J. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A shutter assembly for a whole house fan is disclosed which can be flush mounted (i.e. substantially coplanar) with the underside surface of a ceiling so as to close off an opening in the ceiling leading to a whole house fan located thereabove. The shutter assembly comprises a frame somewhat larger than the opening and adapted to be flush mounted to the underside of the ceiling surrounding the opening. The frame is comprised of side and end members. A bracket at the intersection of the frame member (securely joins the frame members together. The brackets have temporary attachment tabs for temporarily holding the frames) in place with respect to the ceiling sheathing until the frame is …
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 11, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 11, 2009.
- 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.