Lifting wedge
CA 1237119 A · Owner: Lassila & Tikanoja Oy · Inventors: Randen, Ilkka
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a lifting wedge which is intended in particular for lifting a paper roll in the vertical position, and which is made up of a substantially cylindrical lifting wedge part (1) having the cross sectional shape of the core hollow of the paper roll a lifting belt, (2) fitted to the lifting wedge and friction surfacing (3). The lifting wedge accompanies during transport the roll to be lifted. Previously known lifting devices of this type consist of lifting belts which are passed around paper rolls in the vertical position. The assembling of the belts and fitting them around the rolls is relatively difficult. The lifting wedge part (1) according to the invention is …
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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 May 24, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 24, 2005.
- 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.