Valve pin actuator
CA 2293662 A1 · Owner: Lee, Christopher W. · Inventors: Lee, Christopher W.; Moss, Mark D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A valve pin actuator is disclosed that includes a cyclinder (54) mounted to the clamping plate (36), a piston (56) slidably mounted in the cylinder (54) and a valve pin assembly carried by the piston (56). A hydraulic or pneumatic circuit is provided for controlling the movement of the piston (56) and in , turn translation of the valve pin (28) between the seated and unseated positions. The valve pin assembly includes a first part (60 62, 68) removably , secured to the piston (56) so as to translate therewith and a second part , (64) for receiving the valve pin (28) and secured to the manifold (16). The actuator assembly enables removal of the clamping plate (36) without removal of the …
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 May 27, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 27, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 27, 2020.
- 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.