Latchmaster sliding pull up hitch
CA 2091453 C · Owner: Knorr Brake Holding Corporation · Inventors: Engle, Thomas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A stanchion (18) is provided with a latch system which is operable from the tractor (10) which positions the trailers (12) such that a gate (34) on the tractor (10) locks and unlocks the latch to appropriately reposition the stanchion (18) during the positioning of the trailer (12). The tractor (10) also includes a hook (38) which engages the stand (26) to raise the stand (26) during loading of the trailer (12) from its lowered to its raised position to engage and secure the tractor and also to reposition the unlocked stand (26) during unloading of the trailer (12).
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 September 12, 1991 and granted May 2, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 12, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 12, 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.