Valve-gated injection moulding device
CA 2216983 C · Owner: Vorkoper, Rainer · Inventors: Vorkoper, Rainer
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a valve-gated injection moulding device in which an actuating device of the valve pin comprises a sliding member having its walls in sliding engagement with an axial guide track. The sliding member comprises a radial opening defined by an upper and a lower contact surface. A free end of an actuating lever having two curved actuating surfaces extends radially into the opening of the sliding member. By means of this construction a compact and accurate, actuating device is provided which reduces radial forces on the valve pin, such that it can be operated without friction or wear. Residual radial forces are taken up by the sliding member. The stroke of the actuating …
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
- Filed September 30, 1997 and granted December 9, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 30, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 30, 2019.
- 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.