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Expired Canadian patentCanada

Coupling arrangement

CA 1290953 C · Owner: Petterson, Tom · Inventors: Petterson, Tom

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

Coupling arrangement consisting of two elements (1 10) capable, of being connected one to the other namely a first element (1/21), so arranged as to be introduced into and withdrawn from a second element (10) whilst adopting one or more specific positions in relation to the second element. This exhibits a body (12) in the form of a socket having an internal cavity and with slots (14) to permit the introduction of the first element. The first element exhibits a component (3) in the form of a disc having a peripheral surface (4), the dimensions of which match the dimensions of the cavity and a shaft (2) which projects symmetrically from the disc-shaped component. The slots (14) of the second …

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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 October 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 22, 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.
FiledDecember 10, 1986
GrantedOctober 22, 1991
Term endedOctober 22, 2008
Patent numberCA 1290953 C
Classification (IPC)F16D3/20

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedDec 10, 1986Patent grantedOct 22, 1991Term endedOct 22, 2008

Sources & verification

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