Method and apparatus for spreading sheets
CA 2004302 C · Owner: Ishihara, Hidetoshi · Inventors: Ishihara, Hidetoshi; Ichimoto, Hisashige; Ueda, Atsushi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for spreading thin soft rectangular articles such as cloth pieces, unwoven cloth pieces paper, sheets, plastic sheets, etc. (generally called "rectangular sheets") is disclosed. A part of a first edge including one corner of a rectangular sheet is suspended in the air as held nearly horizontally by gripping the one corner and another point on the edge by means of grippers which are slidable on a horizontal rail. Thereby a second edge of the rectangular sheet including the one corner is made to hang down nearly vertically. Then the lowermost end of the second edge is gripped by another gripper that is movable vertically along a vertical rail. Except for the one corner, the initially …
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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
- Filed November 30, 1989 and granted September 27, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 30, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 30, 2011.
- 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.