Watertighting device
CA 1050354 A · Owner: R.N.L.I. (Trading) Limited · Inventors: Brinton, Michael B. J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
ABRIDGEMENT, A marine outboard motor is provided with an exhaust housing watertighting device to operate automatically in the event of a capsize. The exhaust gases pass downward through a vertical tube, to a ring of exhaust ports in the tube wall and if the engine is inverted, a weighted sleeve fitted telescopically round the lower end of the tube drops into a position where it closes the exhaust ports in a fluid-tight manner. inside the tube is a check-valve in the form of a captive ball that upon inversion, drops on to a valve seat located above the ring of exhaust ports.
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 March 13, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 13, 1996.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.