Web forming machines
CA 1077318 A · Owner: C. H. Johnson And Sons Limited · Inventors: Hardman, James; Cooke, Thomas N.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The disclosure describes a drainage foil comprising a wear resistant nose portion adapted to be mounted below a web forming fabric wire, with the upper surface of the nose portion supporting the fabric and a detachable portion located downstream of the nose portion. The upper surface of the detachable portion is parallel to, or at least a part thereof is downwardly inclined in the downstream direction to the upper surface of the nose portion. This foil can be adapted to a variety of equipments in which a wear resistant support surface can be used to advantage in conjunction with an adjacent replaceable component e.g. vacuum boxes.
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 May 13, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 13, 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.
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.