Movable bucket elevator
CA 1238878 A · Owner: Phb Weserhutte Ag · Inventors: Eisold, Horst
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Movable bucket elevators for carrying bulk material are subject to loading forces caused by the feed motion (thrust motion) of the buckets and their chain guides. In order to reduce the loadings to a large degree and thus to increase the useful life of the elevator, there is provided in the lower zone of the elevator path a stationary (fixed) cylindrical casing and a rotary cutting head encircling the casing. The cutting head is provided with shovels adapted to cut the bulk material and bring it to the front of an opening in the casing where the material is scooped up by ascending buckets. As a result the buckets have, virtually a scooping function only.
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 July 5, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 5, 2005.
- 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.