Hoist
CA 2035866 A1 · Owner: Heck, Jorg · Inventors: Heck, Jorg; Heck, Jorg
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
57) Abstract, The invention concerns a hoist (1) for transporting loads even over steps, (26), the hoist having a frame (2) with a wheel-set (4) and a spindle (3) running along the longitudinal axis of the frame (2) plus a sliding carriage (5) mountedto slide on the frame (2) and designed to carry the load (6) the sliding carriage, being connected to a spindle nut running on the spindle (3). In order to ensure that the hoist remains stationary when transporting loads over steps it is proposed that each of the wheels (4) is fitted with a drag shoe (22) which is mounted to rotate about the wheel axle (21) and which has a base (23 24) which sup-, ports the hoist (1) when transporting loads (6) …
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 July 6, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 6, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 6, 2012.
- 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.