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Expired Canadian patentCanada

Flutter exciter

CA 1320709 C · Owner: Dynamic Engineering Inc. · Inventors: Reed, Wilmer H. Iii

CIPO record

Overview

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

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Abstract From the Canadian patent

A flutter exciter induces vibration either for actual aircraft flight testing or for wind tunnel model testing. The basic flutter exciter unit is a pair of rotatable concentric cylinders mounted on either a fixed vane or an aircraft wing or a tail surface. Each cylinder has a slot which allows the air flow to pass therethrough. By rotating the cylinders together oscillating air pressure are, induced on the fixed vane or the aircraft surface in which the cylinders are attached. The cylinders may be mounted at a trailing edge of either the fixed vane or the aircraft wing to any tail surface, or on any other lifting surfaces of the aircraft itself. Thus because the flutter exciter can be made …

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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 July 27, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 27, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 27, 1988
GrantedJuly 27, 1993
Term endedJuly 27, 2010
Patent numberCA 1320709 C
Classification (IPC)G01M5/00 +1 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedJune 27, 1988Patent grantedJuly 27, 1993Term endedJuly 27, 2010

Sources & verification

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