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Expired Canadian patentCanada

Valve seat concentricity gage

CA 1083341 A · Owner: Bendix Corporation (The) · Inventors: Yager, William H.

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

A gage is disclosed which produces air flow signals corresponding to the eccentricity existing between the centerline of the valve stem hole and the valve seat, the eccentricity reading being unaffected by out-of-round, out-of-square or irregular surface finish conditions. The gage includes an arbor centered within the stem hole and an air spindle member having an internal passage through which the arbor extends the air, spindle having a partially spherical surface formed thereon located to contact the valve seat. A pair of opposed orifices exiting into the internal passage are located at axial points even with the theoretical center of the partially spherical air spindle surface and …

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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 August 12, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 12, 1997.
  • 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 30, 1976
GrantedAugust 12, 1980
Term endedAugust 12, 1997
Patent numberCA 1083341 A
Classification (IPC)G01B13/16 +2 more

Timeline

Timeline From CIPO dates

1977198019831986198919921995Application filedDec 30, 1976Patent grantedAug 12, 1980Term endedAug 12, 1997

Sources & verification

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