Gas flow units
CA 2118967 A1 · Owner: The Boc Group Plc · Inventors: Whitaker, Keith
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An anaesthetic vaporiser 2 includes a concentration dial 4 for controlling the concentration of anaesthetic leaving the vaporiser 2. The vaporiser 2 is adapted to be mounted on a back bar 6 of an anaesthesia machine. An exclusion pin 8 is mounted adjacent the back bar 6 and forms part of an interlock system for preventing rotation of the concentration dial 4 when a second vaporiser is also mounted on the back bar 6 and is dispensing anaesthetic vapour. A button assembly 14 is mounted on the concentration dial and must be depressed before the concentration dial 4 can be rotated. The button assembly 14 incorporates an overload device which if excessive force is, applied to the button assembly …
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 March 14, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 14, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 14, 2016.
- 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.