Lifting device
CA 1075282 A · Owner: Aluma Systems Incorporated · Inventors: Johnston, Ronald J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Invention: A lifting device for use in association with concrete forming structures is provided. The lifting device has a pair of jaws, mounted on an axle with a lifting lug, associated with one of the jaws and a handle associated with the other of the jaws so that the other jaw may be hingedly moved relative to the first jaw. A spring loaded locking pin is provided to lock the second jaw in either on open or closed position, relative to the first position. The locking pin and the handle are each operable from above the lifting device. The inner ends of each of the hook-like jaws are rounded so as to specifically match the root configuration between the web and top flange of …
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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
- Granted April 8, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 8, 1997.
- 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.