Sliding flow controller having channel with variable size groove
CA 2199160 C · Owner: Alaris Medical Systems, Inc. · Inventors: Nason, Kevin S.; Minami, Don S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A sliding flow controller for controlling flow through a pumping segment (10) used in a fluid delivery system. The flow controller includes a slider (18) that travels along a channel defined by an elastomeric membrane (12) and a variable size groove (60) formed in a rigid component. The slider includes a projecting ball (20) that presses the membrane (12) against the groove (60). At one end, the groove (60) has a maximum cross-sectional area for a maximum flow position and at another end, the groove (60) has no cross-sectional area for a flow stop position. The slider and the pumping segment have respective click stops (80, 314) to impart sensory feedback to the operator when …
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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 7, 1995 and granted July 18, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 7, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 7, 2017.
- 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
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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.