Carriage for picking up and moving containers, and method for the use thereof
CA 2073187 C · Owner: Nijenhuis, Derk Sr. · Inventors: Nijenhuis, Derk Sr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
For picking up and moving containers (26) with corner castings (25) on platforms (1, 3) railway wagons, (2") or ships, two carriages (5) are locked one to each end face of the container. These carriages (5) have sets of wheels, which are vertically movable therein and allow displacement of the carriages in their longitudinal direction. With the wheels of each set at the same height the carriages are in the lowest position and can be locked by locks in the corner castings of the container. By moving one wheel of each set of each carriage (5) down, the carriage and, if locked thereto the container, are lifted for displacement. Such wheels can bridge gaps (C) between loading surfaces and …
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 4, 1991 and granted December 2, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 4, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 4, 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.