Apparatus for lifting sheet material
CA 1098932 A · Owner: Dean Research Corporation · Inventors: Henke, John R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus for gripping and lifting sheet material is provided comprising elongated channel members capable of telescoping one into the other. Gripping means are provided on either end of the unit for gripping opposed edges of the sheet material. A roller arrangement having a return roller in one member and an anchoring means in another accepts an elongated web which, upon application of force to the web will telescope the, members and urge the gripping means into contact with the sheet material so that the sheet material can be lifted and moved to a selected location.
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 April 7, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 7, 1998.
- 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.