Drive chain having a disengaging link
CA 1058910 A · Owner: Butler Manufacturing Company · Inventors: Miller, Walter L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A chain of the type that is used in a reciprocating chain drive. The majority of the chain is constructed of conventional links that mesh with and are driven by rotating sprockets, A specially constructed link is included in the chain to disengage from the sprockets if the reversal controls of the chain drive mechanism malfunction. The special disengaging link is provided with an inclined plate which cams against the sprocket teeth to divert the chain off to the side of the sprocket if the disengaging link reaches the sprocket due to a control malfunction.
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 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.