Two-wheel hand truck with elevator
CA 1050583 A · Owner: Walker, Bruce A. · Inventors: Walker, Bruce A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Inventor: Bruce A. Walker, Title: TWO WHEEL HAND TRUCK WITH ELEVATOR ABSTRACT OF THE DISCLOSURE, An elevating mechanism is incorporated into the body of a two-wheel hand truck. The upright rails of the hand truck are tubular, slotted and open at their bottom ends. An elevator leg is telescopically mounted in each rail and the two elevator legs, are interconnected by a ladder-like array of cross bars extending from the slots in the truck rails. Accordingly the elevator, legs will move in unison and a crank-operated chain-pull mechanism at the back side of the truck is attached to an elevatorleg-cross bar to forcibly extend the elevator downwardly. An automatic safety brake on the crank will …
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
- Granted March 13, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 13, 1996.
- 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.