Method and device for passing through critical speeds of elongate rotors
CA 1087874 A · Owner: Maschinenfabrik Augsburg-Nurnberg Aktiengesellschaft · Inventors: Zippe, Gernot; Meinke, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a method of passing through critical rotational speeds of an elongate rotor. The method comprises alternately coupling to and uncoupling from the rotor critical frequency altering means as a result of radial movement of the rotor as the rotor approaches its critical speeds. In this manner, a change in the frequencies of the critical rotational speeds and/or their amplitude is produced.
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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 October 21, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 21, 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
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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.