Dredger chain joint
CA 1073685 A · Owner: Bos Kalis Westminster Group N.V. · Inventors: Zabel, Izaak
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A bearing construction is provided such as for a dredger chain, wherein two bearings are disposed co-extensively. Each bearing comprises an outer bearing bushing received in a lug and: having an internal concave bearing face. An inner bearing bushing having a corresponding convex outer surface is mounted within the outer bearing bushing and a pivot pin is accommodated in said inner bearing bushing, while on either side of said lug a link is disposed on the pivot pin. The construction reduces wear and noise during operation.
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 March 18, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 18, 1997.
- 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.