Automatic silo door construction
CA 1058821 A · Owner: Rochester Silo · Inventors: Price, Raymond R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
AUTOMATIC SILO DOOR CONSTRUCTION, . ABSTRACT OF THE DISCLOSURE Automatically actuable silo door apparatus and a silo equipped with same. The apparatus preferably comprises a door member adapted to selectively block a silage discharge orifice a hinge assembly for mounting the door retractable gun means, for automatically activating the door apparatus and trigger, apparatus responsive to silage level for selectively activating the gun means to open the door. In a preferred form of the invention each trigger means comprises a portion received within an upper adjacent silo door orifice whereby an automatic silo unloader will contact and activate it during the unloading operation. The hinge …
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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 July 24, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 24, 1996.
- 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.