Coupling antiwindage rings
CA 2095787 A1 · Owner: Wynn, Robert Charles · Inventors: Wynn, Robert Charles; Swartz, Lowell Mason
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An anti-windage device is provided for use on the couplings formed by mating flanges of rotors for turbomachines, such as steam turbines and the like. The anti-windage device is comprised of upper and lower antiwindage ring segments. The anti-windage ring segments have holes for each of the nuts that are threaded onto the bolts that join the mating flanges into a rotor coupling. The holes enclose the nuts and the anti-windage ring segments fill the circumferential spaces between adjacent nuts. The ring segments are secured to the rotor flange by causing the nuts to bear against an annular lip formed in each hole. The depth of the holes and the axial thickness of the anti-windage ring is …
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 May 7, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 7, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 7, 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
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.