Increased capacity face gear arrangement for transmitting torque through an angle to a plurality of power paths
CA 2136642 C · Owner: Rolls-Royce Gear Systems, Inc. · Inventors: Bossler, Robert B. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A gear arrangement for transmitting torque through an angle and through a plurality of power extraction paths. The arrangement includes a driving shaft (20) a floating spur gear pinion (22) , concentrically mounted on the drive shaft a pair of, concentric and opposed face gears (32 34) that are in meshing engagement with the pinion (22), a primary driven shaft (42) mounted to one of the face gears (32) and at least one non-floating spur gear (60) also in meshing engagement with both face gears (32, 34). The driving shaft is located by a bearing or a flexible coupling (28) at the shaft end remote from the gear box to allow the pinion (22) to float freely. Useful power may be extracted …
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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 April 30, 1993 and granted July 11, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 30, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 30, 2015.
- 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
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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.