Tail rotor
CA 1320187 C · Owner: Bell Helicopter Textron Inc. · Inventors: Morrison, Dwayne Edwin; White, Billy Paul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A helicopter tail rotor includes a drive mast having an axis of rotation. A first blade pair is mounted for rotation about the drive mast. The first blade pair includes a pitch change axis perpendicularly disposed to the drive mast axis of rotation. A second blade pair is mounted for rotation about the drive mast and is spaced apart from and parallel disposed to the first blade pair. The second blade pair includes a pitch change axis parallel to the pitch change axis of the first blade pair.
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
- Granted July 13, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 13, 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.
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.