Direct burial outdoor membrane pressurization system
CA 2419170 A1 · Owner: Andrew Corporation · Inventors: Cross, Brian Douglas; Vanderhoof, Troy Inslee; Curry, John Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system configured to deliver dry pressurized air derived from ambient, air, to underground or outdoor cables conduit, waveguides, plenums or other, air spaces for the purpose of preventing the ingress of moisture or contamination. The system includes a housing and a modular membrane pressurization unit removably received within an interior space of the housing. The housing has a base configured for being at least partially buried below ground level and an air intake above ground level. The modular membrane pressurization unit intakes humid ambient air from the environment surrounding the housing and generates a continuous supply of dry pressurized air housing that is routed to 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 February 18, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 18, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 18, 2025.
- 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.