Air regulator valve for ventilated cage and rack system
CA 2275016 A1 · Owner: Hardesty, Ronald W. · Inventors: Hardesty, Ronald W.; Sheaffer, John E.; Murray, Dale
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device for regulating exhaust air flow in a ventilation system when a rack is removed, from the system. The device includes a housing forming an air conduit. A valve is mounted in, the housing with the valve being moveable between an open position when the device is, connected to the rack, and in one of a plurality of partially preset closed positions when the, device is not connected to the rack. A valve adjustment member selects the one of a plurality of, partially closed positions and is preset during factory testing. When valve is installed at facility, and valve is removed from rack the adjustment is fully automatic. The technician merely, disconnects the exhaust drop hose …
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 June 15, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 15, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 15, 2021.
- 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.