Butterfly valve
CA 1292462 C · Owner: Aktiebolaget Somas Ventiler · Inventors: Hubertson, Folke
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A butterfly valve comprises a valve housing (1) with an axial passage (4) for a fluid medium; a valve seat in the form of a seat ring (8) which is displaceable within a slot (7) in the valve housing in a radial direction relative to the axial passage the seat ring, elastically deformable as to its shape in the radial direction; and a throttle (5) arranged so as to be pivotable about an axis of rotation (23) between an open position and a shot-off position the throttle, having a seal face (21) on its periphery (18) which is pressed against the seat ring when the throttle is in the shut-off position. The shape of the seal face is defined by lines of intersection between the seal face and …
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
- Granted November 26, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 26, 2008.
- 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.