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Expired Canadian patentCanada

Exhaust coupling assembly for a marine stern drive

CA 1085236 A · Owner: Brunswick Corporation · Inventors: Bankstahl, Herbert A.

CIPO record

Overview

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

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Abstract From the Canadian patent

A marine stern drive includes an inboard engine having an exhaust passageway means connected to an outboard drive unit having an exhaust passageway means. A transom bracket assembly positioned between the engine and the drive unit permits vertical pivoting of the drive unit for steering and horizontal pivoting of the drive unit for trimming. The improvement includes a first exhaust pipe connected to the inboard engine and a second exhaust pipe connecting to the drive unit. The first exhaust pipe extends outward through the transom of the boat and has an open and position centered on and adjacent the vertical pivot axis and below the vertical pivot axis. The second exhaust pipe extends …

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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 September 9, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 9, 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.
FiledOctober 2, 1978
GrantedSeptember 9, 1980
Term endedSeptember 9, 1997
Patent numberCA 1085236 A
Classification (IPC)F01N3/00 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedOct 2, 1978Patent grantedSep 9, 1980Term endedSep 9, 1997

Sources & verification

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