Hatch cover lock and hinge
CA 2098209 C · Owner: Ireco, Inc. · Inventors: Nadherny, Rudolph E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hatch cover lock with an automatic first locking mechanism for securing a removable hatch cover of a railway hopper car to the railway hopper car and secondary manually operated locking mechanism to secure the hatch cover to the hopper car in addition to the automatic first locking mechanism which allows the hatch cover to be opened from either side of the hopper car, and which cooperates to prevent accidental removal of the hatch cover and/or batten bar from the hopper car.
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 11, 1993 and granted April 24, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 11, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 11, 2015.
- 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.