Cutting wheel arrangement for suction dredge
CA 1266280 C · Owner: Stehmeier, Heiko · Inventors: Steinkuhler, Siegfried; Stehmeier, Heiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cutting wheel arrangement for a suction dredge includes a cutting wheel assembly provided with a plurality of cutting stirrups. A suction pipe is connected to a suction chamber arranged within the cutting wheell arrangement. The suction chamber has a suction opening in the suction area. The cutting wheel assembly includes two coaxially adjacent cutting wheels which are fixedly connected to each other and have lateral cutting openings. The suction chamber is separated by a center wall into two separate chamber portions. One of the suction chamber portions is located in the region of one cutting wheel and the other suction chamber portion is located in the region of the other cutting wheel. …
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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 February 27, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 27, 2007.
- 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.