Frost control system for high-speed horizontal folding doors
CA 1309446 C · Owner: Rytec Acquisition Corporation · Inventors: Mueller, Louis B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A frost resistant, horizontal folding door for a freezer room has heater assemblies in the header jambs and, for simultaneously heating the door curtain and the floor of the doorway. The heater assembly in the header can be a mat of open mesh fiber glass having a serpentine array of an electric resistance heating wire bonded to it. The heater assembly in the jamb can be a formable electrical resistance heater within the structure of the jamb. The heater assembly for the door curtain and the floor of the doorway can be an electrical radiant heater disposed on the header and directed at the curtain and the floor.
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 October 27, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 27, 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.