Spreader bar and overheight attachment with automatic latching mechanism
CA 2062344 C · Owner: Boos, Jeffrey Joseph · Inventors: Dawson, Doyle Rackley; Boos, Jeffrey Joseph; Hagelbarger, Lee Alfred
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cargo loading system which includes a spreader bar and overheight attachment wherein the overheight attachment incorporates an automatic latching mechanism for the purpose of locking and unlocking engagement of the spreader bar. The automatic latching mechanism is actuated by the twistlocks of the spreader bar and serves to obviate the need for dock-side personnel and the attendant hazardous working conditions posed to these personnel by conventional mounting pin attachment of the spreader bar and overheight attachment.
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 March 5, 1992 and granted October 2, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 5, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 5, 2014.
- 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.