Drying apparatus
CA 1097911 A · Owner: Pray, Robert W. · Inventors: Pray, Robert W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus for drying webs which includes a housing having two compartments with one compartment open on one side and having heating elements therein. The other of said compartments is closed and has air inlet and outlet openings for circulation of air normally therethrough. An air control valve is disposed between the compartments and functions to direct all of the air into the open compartment should the web speed decrease or the movement of the web terminate completely.
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 March 24, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 24, 1998.
- 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.