Patent Yard Sign in
Expired Canadian patentCanada

Apparatus and method for adaptive suppression of vibrations in mechanical systems

CA 2197729 C · Owner: Zipfel, George Gustave Jr. · Inventors: Browning, Douglas Roy; Zipfel, George Gustave Jr.; Benning, Roger David

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

A method and apparatus are provided for stabilizing at least one element of a mechanical system against echo-like responses to mechanical disturbances. One, or more error signals are provided by sensing the motion of the system at one or, more points. At least one adaptive filter is operated in response to the error signal or, signals, and in response to at least one non-advanced reference signal that is directly, related to some motion of the system. The adaptive filter produces a corrective, signal for driving a mechanical actuator thereby to apply to the element a , stabilizing generalized force. By non-advanced is meant that there is a zero or negative time-delay, between 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

  • Filed February 17, 1997 and granted November 23, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 17, 2017.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 17, 2019.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 17, 1997
GrantedNovember 23, 1999
Term endedFebruary 17, 2017
Patent numberCA 2197729 C
Classification (IPC)F16F15/18 +1 more

Timeline

Timeline From CIPO dates

1998200020022004200620082010201220142016Application filedFeb 17, 1997Patent grantedNov 23, 1999Term endedFeb 17, 2017

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.