Skid-type landing gear for helicopter
CA 2207787 C · Owner: Barquet, Henri Fernand Louis · Inventors: Mairou, Joseph Francois Robert; Barquet, Henri Fernand Louis; Prudhomme Lacroix, Pierre
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Landing gear for helicopter, including two skids P each having a longitudinal ground contact section 1 and being connected to a forward crossmember and an aft crossmember 2 which are in turn attached to the airframe by brackets 4 6, the aft crossmember 2 being attached at the tips of its lower ends 2a to the after part of the said longitudinal contact sections 1. Each of the said skids P has at its forward end an inclined transition zone T having two curves C1 C2 and being aligned perpendicular to the said longitudinal ground contact sections above the plane of these sections, the two transition zones constituting together in this manner, an integrated forward crossmember offset in relation …
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 June 5, 1997 and granted December 31, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 5, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 5, 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.
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.