Aerodynamic windshield wiper
CA 2094043 C · Owner: Dipple, Stephen Garnet · Inventors: Dipple, Stephen Garnet; Buechele, Franz
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A primary yoke (24) for a windshield wiper assembly has transversely spaced leeward (42) and windward (44) sides extending along the length thereof and vertically extending webs (56 58, 60), which maintain a predetermined separation between said sides which increases from a minimum at the bottom to a maximum at the top the, inner surface (62) of the leeward side (42) being inclined toward the windward side (44) and defining a gap therebetween through which air may pass to minimize turbulence from air flow impinging on the primary yoke.
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 October 16, 1991 and granted August 2, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 16, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 16, 2013.
- 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.