Copying device with electromagnetic cover release
CA 1069366 A · Owner: Oce-Van Der Grinten N.V. · Inventors: Driessen, Henricus M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A copying device provided with a glass plate and a co-operating cover and an improved locking mechanism for said cover comprising at least a permanent magnet combined with an electromagnet connected to a control circuit wherein the permanent magnet keeps the cover in the closed position against the glass plate, and at the end of the copying run the electromagnet is activated with a magnetic field thereby releasing the cover. This improved locking mechanism has the advantage over known mechanical mechanisms in that there is no wear on the components thereby increasing its reliability
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 January 8, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 1997.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.