Downhole motor drive shaft universal joint assembly
CA 1290952 C · Owner: Dreco Group Of Companies Ltd. (The) · Inventors: Wenzel, Kenneth H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A universal joint assembly comprises a first rotary member having a longitudinal axis and an outer tubular portion at one end thereof concentrically disposed about the axis, a second rotary member having having a longitudinal axis and an inner tubular portion at one end thereof concentrically disposed about the axis the, second member being adapted to be telescopically received within the outer tubular end portion of the first member, means pivotally connecting the first and second members whereby to provide limited omnidirectional pivotal movement of one of the first and second members with respect to the other of the first and second members about a point of intersection of the …
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 October 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 22, 2008.
- 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.