Locking device for mining machine trim chain
CA 1067109 A · Owner: Dresser Industries · Inventors: Agin, Clarence R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Invention. An improved locking device for a trim chain take-up for mining machines in which the trim chain extends around the auger and the auger support arms and is driven by the auger to cut clearance for the support arm. The take up is slidably mounted behind the auger support arm in guide means affixed to the machine frame. When the take-up is moved away from the support arm to increase the tension on the chain, the locking device moves into the space developed between the take-up and support arm to prevent the take-up from backing off and reducing the chain tension. The locking device comprises a plurality of thin spacers pivotably retained in a side-by-side stacked …
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 November 27, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 27, 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.