Anti-shimmy caster wheel mounting
CA 2242284 C · Owner: Teftec Corporation · Inventors: Finch, Thomas E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An assemblage far mounting a caster wheel (3) on a depending stationary post (10), on a wheeled load carrier comprises a body element (20) having a cylindrical chamber, (20a) concentrically surrounding the support post (10). The body element has a bracket, (20b) for mounting a caster wheel for rotation about a horizontal axis. A vertical stack of, washers (21, 22) surround the support post and alternate ones of such washers are secured, to the support post and rotatable within the cylindrical chamber while the remainder of, such washers arc co-rotatable with the body element about the axis of the support post. The cylindrical chamber is filled with a lubricating fluid to a sufficient …
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 June 29, 1998 and granted December 17, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 29, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 29, 2020.
- 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.