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Expired Canadian patentCanada

Landing gear

CA 2830408 C · Owner: Messier-Dowty Limited · Inventors: Lang, Richard Charles; Menezes, Robert Anthony; Bennett, Ian

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

An auxiliary mechanism includes a lever a spring unit and a positioning unit. The lever is pivotally connected to the upper portion of the main shock absorber strut so as to pivot between a predetermined lower position for take-off and landing and an upper position. The spring unit is pivotally connected at an upper end to the upper portion of the main shock absorber smit and pivotally connected at a lower end to the lever. The positioning unit is pivotally connected at a lower end to the bogie beam at an auxiliary pivot and connected at an upper end to the lever and assumes contracted state for taxiing take-off and landing, and an extended state for stowing the landing gear after take-off …

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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

  • Filed August 4, 2006 and granted February 18, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 4, 2026.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 4, 2006
GrantedFebruary 18, 2014
Term endedAugust 4, 2026
Patent numberCA 2830408 C
Classification (IPC)B64C25/22 +2 more

Timeline

Timeline From CIPO dates

2007200920112013201520172019202120232025Application filedAug 4, 2006Patent grantedFeb 18, 2014Term endedAug 4, 2026

Sources & verification

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