Patent Yard Sign in
Expired Canadian patentCanada

Vortex flowmeter

CA 1316712 C · Owner: Lew, Hyok Sang · Inventors: Lew, Hyok Sang

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

Abstract of the Disclosure A vortex flowmeter comprises a vortex generator (1) of an elongated cylindrical shape disposed across a first cross section of a flow passage (2) and a vortex sensor (4) of a planar geometry disposed across a second cross section of the flow passage (2) generally parallel to the vortex generator (1) wherein at least, one extremity of the vortex sensor is secured to the wall (3) of the flow passage (2) and a deflective portion (7) of the vortex sensor (4) is connected to a force transmitting member (9) extending from a transducer (10) by a mechanical coupling (11). The volume flow rate is determined from the frequency of the fluctuating electic signal generated by …

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 April 27, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 27, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 16, 1988
GrantedApril 27, 1993
Term endedApril 27, 2010
Patent numberCA 1316712 C
Classification (IPC)G01F1/32 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedDec 16, 1988Patent grantedApril 27, 1993Term endedApril 27, 2010

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.