Aircraft propeller blade retention
CA 1320714 C · Owner: United Technologies Corporation · Inventors: Valentine, Peter Loring
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Aircraft Propeller Blade Retention Preloading and retention of an aircraft propeller blade (12) are achieved by a preloading mechanism (85) received within an outer portion of a hub barrel (30) within which the blade is received. The preloading mechanism comprises an annular fastener (90) threaded into the barrel. A splined lock ring (125) prevents loosening or disengagement of the fastener from the barrel. Location of the preloading mechanism at an outer location of the barrel allows the primary centrifugal load path from the blade into the barrel to be free from discontinuities and attendant stress concentrations. 11
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 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.
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.