Adjustable valve for variable flows and a method for reducing flow through a valve
CA 2427042 C · Owner: Lindborg, Herman · Inventors: Lindborg, Herman
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Valve for variable flows, comprising a tube (11 12) with an input opening , (15) and an output opening (17) a flow reducing device (18) having a damper surface (19) facing said output opening (17) for regulation of the air flow through said tube (11, 12), and an actuator for variable setting of the distance between the damper surface of the flow reducing device and said output end (17). The tube (11, 12) has an outer damper flange (30) projecting at said output end (17), which damper flange (30) has a flange surface (31) which extends between the edge (32) of the output opening (17) of the tube (11, 12) and the outer edge (33) of the damper flange (30) wherein an , extended flow …
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 October 26, 2001 and granted July 19, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 26, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 26, 2023.
- 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.