Needle-valve for hot runner injection moulding
CA 1077218 A · Owner: Flygenring, Eduard F. · Inventors: Flygenring, Eduard F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Needle-valves to be inserted in a hot runner panel of an injection moulding machine for the distribution of the molten material to a plurality of dies fastened to the front of a hot runner panel and which are opened by the pressure of the molten material and closed by spring means by the releasing of the pressure. The construction of the valves being so that they as a unity may be easily inserted removed and adjusted from the, backside of the hot runner panel without disassembling the dies from the moulding machine. Further the valve is provided with adjustable abutment means in an enclosed space which will not be contaminated by the molten material to ensure exact position of the needle in …
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.