US5051104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flushing device for motorboat engines
Assignee: Individual
•
Filing: 1990-04-19
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Granted: 1991-09-24
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Expires: 2010-04-19
Abstract
Abstract An apparatus is disclosed for use in flushing the cooling systems of water cooled outboard and inboard/outboard motorboat engines that draw cooling water through intakes in the engine housing beneath the surface of the water in which the boat is operating. The apparatus allows lubricant to be injected into the cooling system after the cooling system has been flushed with clean, fresh water to leave a coating of oil in the surfaces of the cooling system to prevent rust from forming on the surface. The apparatus consists of a U-shaped or bighted spring with two legs on which are slidably mounted two cup-shaped seal members constructed of elastomeric material. The seal members are positioned over the cooling intakes of the engine housing. One of the seal members has an opening through which clean fresh water is introduced and the other sealing member has an opening through which lubricant is injected.
Inventors
- 👤 Kjall G. Guhlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:42
CPC Classifications
F; F02; F02B; F02B61/00; F02B61/04; F02B61/045; F01; F01P; F01P3/00; F01P3/20; F01P3/202; F01P3/205; F01P2050/00; F01P2050/02; F01P2050/12
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
130 words
Apparatus for introducing fresh clean water and lubricant into the cooling system of a motorboat engine that draws cooling water through intakes in the engine housing located below the surface of the water in which the boat is operating comprising, a U-shaped spring having first and second legs, first and second cup-shaped seal members constructed of elastomeric material, each of which is mounted on one of the legs of the spring to cover the water inlets of the engine, the first seal member having an inlet through which lubricant can be injected into the water before it enters the engine, the second seal member having threaded connector means for connecting to a water hose to provide the fresh clean water to be drawn into the cooling system of the engine.
Claim 2
Dependent Claim
130 words
Apparatus for introducing fresh clean water and lubricant into the cooling system of a motorboat engine that draws cooling water through intakes in the engine housing located below the surface of the water in which the boat is operating comprising, a U-shaped spring having first and second legs, first and second cup-shaped seal members constructed of elastomeric material, each of which is mounted on one of the legs of the spring to cover the water inlets of the engine, the first seal member having an inlet through which lubricant can be injected into the water before it enters the engine, the second seal member having threaded connector means for connecting to a water hose to provide the fresh clean water to be drawn into the cooling system of the engine.
Claim 3
Dependent Claim
20 words
The apparatus of claim 1 in which the inlet in the first seal member has a wall that tapers outwardly.
Claim 4
Independent Claim
35 words
The apparatus of claim in which the inlet includes a tapered wall section extending partly through the seal member and a slit connecting the tapered wall section to the inside of the cup-shaped seal member.
Claim 5
Dependent Claim
146 words
Apparatus for introducing fresh clean water and lubricant into the cooling system of a motorboat engine that draws cooling water through intakes in the engine housing located below the surface of the water in which the boat is operating comprising, a U-shaped spring having first and second legs, a pair of cup-shaped seal members constructed of elastomeric material, each of which is mounted on one of the legs of the spring to cover the water inlets of the engine, one of the seal members having inlet means comprising a slit through which lubricant can be injected into the water as it enters the engine and one of the seal members having threaded connector means for connecting to a water hose to provide the fresh clean water to be drawn into the cooling system of the engine through the cooling water intakes when the engine is running.
Claim 6
Dependent Claim
146 words
Apparatus for introducing fresh clean water and lubricant into the cooling system of a motorboat engine that draws cooling water through intakes in the engine housing located below the surface of the water in which the boat is operating comprising, a U-shaped spring having first and second legs, a pair of cup-shaped seal members constructed of elastomeric material, each of which is mounted on one of the legs of the spring to cover the water inlets of the engine, one of the seal members having inlet means comprising a slit through which lubricant can be injected into the water as it enters the engine and one of the seal members having threaded connector means for connecting to a water hose to provide the fresh clean water to be drawn into the cooling system of the engine through the cooling water intakes when the engine is running.
Claim 7
Dependent Claim
19 words
The apparatus of claim 4 in which the inlet means includes a wall that tapers outwardly from the slit.
Claim 8
Dependent Claim
159 words
Apparatus for introducing fresh clean water and lubricant into the cooling system of a motorboat engine that draws cooling water through intakes in the engine housing located below the surface of the water in which the boat is operating comprising, a U-shaped spring having first and second legs, first and second cup-shaped seal members constructed of elastomeric material, each of which is mounted on one of the legs of the spring to cover the water inlets of the engine, the first seal member having an inlet through which lubricant can be injected into the water before it enters the engine, said inlet including a tapered wall section extending partly through the seal member and a slit connecting the tapered wall section to the inside of the cup-shaped seal member, the second seal member having threaded connector means for connecting to a water hose to provide the fresh clean water to be drawn into the cooling system of the engine.
Claim 9
Dependent Claim
159 words
Apparatus for introducing fresh clean water and lubricant into the cooling system of a motorboat engine that draws cooling water through intakes in the engine housing located below the surface of the water in which the boat is operating comprising, a U-shaped spring having first and second legs, first and second cup-shaped seal members constructed of elastomeric material, each of which is mounted on one of the legs of the spring to cover the water inlets of the engine, the first seal member having an inlet through which lubricant can be injected into the water before it enters the engine, said inlet including a tapered wall section extending partly through the seal member and a slit connecting the tapered wall section to the inside of the cup-shaped seal member, the second seal member having threaded connector means for connecting to a water hose to provide the fresh clean water to be drawn into the cooling system of the engine.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-09-23 | 1995-03-25 | 1995-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-23 | 1999-03-25 | 1999-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-23 | 2003-03-25 | 2003-09-24 | $7700.00 | Window Closed / Lapsed |