Gutter swedge
CA 1295152 C · Owner: Dresbach, Joseph J. · Inventors: Dresbach, Joseph J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A C-shaped brace member threadedly receives a screw shaft and supports a channel-shaped die. The lower end of the screw shaft is connected by a ball and socket joint to a pair of hinged pressure plates positioned in parallel relation with the opposite walls of the channel-shaped die. Rotation of the screw shaft in a preselected direction raises and lowers the shaft to extend and retract the pressure plates toward and away from the walls of the base member. An end portion of a gutter section to be expanded is positioned on the base member between the longitudinal edges of the pressure plates and the walls of the base member. Downward movement of the screw shaft moves the pressure plates …
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 4, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 4, 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.