Tactile system for aiding a helicopter pilot in making soft landings
CA 2521205 C · Owner: Greene, Randall A. · Inventors: Greene, Randall A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tactile warning system for warning a helicopter pilot of a pre-selected altitude during a landing maneuver includes a collective control arm for control of the aircraft and a tactile warning device operatively connected to the collective control arm. The system includes a radio altimeter for sensing the actual altitude a computer and keyboard for inputting a pre-selected height above the ground into the computer memory. A signal generator generates a signal indicative of the actual altitude as the aircraft approaches the ground. Then when the actual altitude is equal to or less then the pre- selected altitude the system activates the tactile device. The warning system indicative of …
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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 September 23, 2005 and granted July 10, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 23, 2025.
- 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.
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.