Ring seat removal system for a railcar articulated connector
CA 2224844 C · Owner: Steffen, John J. · Inventors: Steffen, John J.; Kaufhold, Horst T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved female connecting member for an articulated connector has a ring seat for a ring within an annular groove for contacting the male member of the connector which, female member has an improved undersurface passage for a probe to provide greater access to the ring-seat undersurface and more mechanical leverage to dislodge a worn ring seat; and in, an alternative embodiment, a structure and tool are provided for removal of a ring-seat from the exposed upper ring-seat surface.
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 January 23, 1998 and granted July 2, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 23, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 23, 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.