Submersible hydraulic cutter suction dredging system
CA 1278798 C · Owner: Chamberlin, Kenneth · Inventors: Chamberlin, Kenneth
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A submersible hydraulic cutter suction dredging system which includes a self-propelled submersible dredger a, floating vessel for controlling the dredger and a ladder universally mounted to a ladder end of the dredger and extending outwardly therefrom. A excavating head is affixed to a distal end of the ladder for excavating material while hydraulic actuation is used for pivoting the ladder universally forwardly of the platform. A pump is coupled to the dredger for removing material excavated by the cutter head and a buoyancy tank is mounted of the ladder for providing lift thereto in order to offset the weight of the ladder in response to being filled with air. The buoyancy tank on the …
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 January 8, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 2008.
- 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.