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Expired Canadian patentCanada

Operating mechanism for a control device

CA 1231995 A · Owner: Westinghouse Electric Corporation · Inventors: Golub, Gregory J.

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

8 50,818, ABSTRACT OF THE DISCLOSURE, An operating mechanism for actuating a control device within a tank housing characterized by a boss extending through an aperture in the tank wall and having a bore, an operating shaft rotatably mounted within the bore and having an external handle and an internal crank portion, link means for connecting the crank portion to the control device, the bore being tapered with one end being larger than the other end, a shaft bearing within the larger end of the bore for supporting the shaft a, seal disposed within the bearing, and retainer means disposed within the bore for retaining the bearing and seal in place.

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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 January 26, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 26, 2005.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 9, 1984
GrantedJanuary 26, 1988
Term endedJanuary 26, 2005
Patent numberCA 1231995 A
Classification (IPC)G05G7/00 +2 more

Timeline

Timeline From CIPO dates

1985198819911994199720002003Application filedFeb 9, 1984Patent grantedJan 26, 1988Term endedJan 26, 2005

Sources & verification

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