Marine propulsion device low liquid pressure warning system
CA 1333458 C · Owner: Borst, Gaylord M. · Inventors: Borst, Gaylord M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A marine propulsion device comprising a propulsion unit including a propeller shaft adapted to support a propeller, and an internal combustion engine drivingly connected to the propeller shaft the engine including a cavity adapted to house a liquid under pressure, a source of gas at a pressure different from atmospheric pressure, a whistle for producing a warning signal in response to communication between the source of gas and the whistle, and a valve for permitting communication between the source of gas and the whistle when the liquid pressure is below a specified value and for preventing communication between the source and the whistle when the liquid pressure is above the specified …
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 December 13, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 13, 2011.
- 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.