US4637355A — Separate lubricating system for outboard motors

Claim 1

Independent Claim 165 words

In an induction system for a two-cycle engine including a carburetor for discharging a fuel/air mixture into an induction passage associated with the engine having a fuel bowl and fuel delivery means extending from the fuel bowl to the induction passage, a fuel tank positioned remotely from said carburetor and a lubricant tank separate from said carburetor and from said fuel tank, the improvement comprising a mixing chamber positioned externally of said carburetor and in proximity thereto, said mixing chamber being defined within an outer housing, fuel pump means separate from said mixing chamber and driven by said engine for delivering fuel from said fuel tank to said mixing chamber under pressure continuously upon running of the engine, lubricant pump means separate from said mixing chamber and said fuel pump means and driven by said engine for delivering lubricant from said lubricant tank under pressure to said mixing chamber, and conduit means for delivering a premixed fuel/lubricant mixture from said mixing chamber to said carburetor.

Claim 2

Dependent Claim 165 words

In an induction system for a two-cycle engine including a carburetor for discharging a fuel/air mixture into an induction passage associated with the engine having a fuel bowl and fuel delivery means extending from the fuel bowl to the induction passage, a fuel tank positioned remotely from said carburetor and a lubricant tank separate from said carburetor and from said fuel tank, the improvement comprising a mixing chamber positioned externally of said carburetor and in proximity thereto, said mixing chamber being defined within an outer housing, fuel pump means separate from said mixing chamber and driven by said engine for delivering fuel from said fuel tank to said mixing chamber under pressure continuously upon running of the engine, lubricant pump means separate from said mixing chamber and said fuel pump means and driven by said engine for delivering lubricant from said lubricant tank under pressure to said mixing chamber, and conduit means for delivering a premixed fuel/lubricant mixture from said mixing chamber to said carburetor.

Claim 3

Dependent Claim 29 words

In an induction system as set forth in claim 1 wherein the fuel tank is positioned remotely from the engine and the lubricant tank is carried by the engine.

Claim 4

Dependent Claim 37 words

In an induction system as set forth in claim 1 further including a fuel filter interposed between the fuel tank and the carburetor and through which fuel passes and having its outer housing defining the mixing chamber.

Claim 5

Dependent Claim 34 words

In an induction system as set forth in claim 3 wherein the fuel is delivered to the fuel filter upstream of the filter element and the lubricant is delivered downstream of the filter element.

Claim 6

Dependent Claim 140 words

In a lubricating system for a two-cycle engine comprising a lubricant delivery system for delivering lubricant to the engine, a relatively small delivery tank for supplying lubricant therefrom to said lubricant delivery system, a separate large capacity lubricant storage tank, pumping means for pumping liquid from said lubricant storage tank to said delivery tank, the improvement comprising control means for operating said pumping means when the lubricant in said delivery tank falls below a first level for operating said pumping means to transfer lubricant from said storage tank to said delivery tank, for discontinuing the operation of said pumping means when the level of lubricant in said delivery tank exceeds a second level, above said first level, and for generating a warning signal when the level in said delivery tank falls below a third level lower than said first level.

Claim 7

Dependent Claim 140 words

In a lubricating system for a two-cycle engine comprising a lubricant delivery system for delivering lubricant to the engine, a relatively small delivery tank for supplying lubricant therefrom to said lubricant delivery system, a separate large capacity lubricant storage tank, pumping means for pumping liquid from said lubricant storage tank to said delivery tank, the improvement comprising control means for operating said pumping means when the lubricant in said delivery tank falls below a first level for operating said pumping means to transfer lubricant from said storage tank to said delivery tank, for discontinuing the operation of said pumping means when the level of lubricant in said delivery tank exceeds a second level, above said first level, and for generating a warning signal when the level in said delivery tank falls below a third level lower than said first level.

Claim 8

Dependent Claim 22 words

In a lubricating system as set forth in claim 5 wherein the control means comprises a float contained within the delivery tank.

Claim 9

Dependent Claim 22 words

In a lubricating system as set forth in claim 6 wherein the float comprises a cylindrical float slidably supported on a post.

Claim 10

Dependent Claim 42 words

In a lubricating system as set forth in claim 7 wherein the control means is operated by a signal provided by a respective magnetic switch positioned at each of the levels and which is actuated by a magnet carried by the float.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1990-01-19	1990-07-21	1991-01-20	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1994-01-19	1994-07-21	1995-01-20	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1998-01-19	1998-07-21	1999-01-20	$7700.00	Window Closed / Lapsed

Separate lubricating system for outboard motors

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