Constant velocity ratio universal joints
CA 2005709 A1 · Owner: Turner, Colin F. S. · Inventors: Bird, Colin A.; Turner, Colin F. S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A constant velocity ratio universal joint of the tripod type, comprising an inner joint member (10) with three outwardly extending arms carrying rollers (21) engaging in guide grooves (20) in an outer joint member (11), the rollers being constrained to roll along the guide grooves without tilting therein and being able to rotate about, slide lengthwise of, and tilt relative to the arms of the inner joint member. Each arm (14) has a part-spherical surface (15) on which is received an inner roller element (22) so as to be able to tilt on the arm the inner roller element (22) having a cylindrical external surface (24) on which roller (21) is able to rotate and slide.
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 December 15, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 15, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 15, 2011.
- 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.