Drive transmitting device
CA 2191069 C · Owner: Western Atlas U.K. Limited · Inventors: Laycock, Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of accoupling a driven member (50) from a driving member (46) used to rotate the driven member is disclosed. The method comprises the step of connecting the driving member to the driven member via a connecting means (38) which is torsionally rigid in a plane generally perpendicular to the axis of rotation of the driven member (50) but is readily deformable in other planes to accommodate misalignment. A drive decoupling means for achieving the method is also provided wherein the connecting means comprises a laminated device attached to the driving member via at least one off axis connection and to the driven member by at least one other off axis connection the connections being …
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 April 20, 1995 and granted October 21, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 20, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 20, 2017.
- 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.