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Boat Engine & Motor Inventions & Patents
From Clixoo Boats – The Boats Guide @ Clixoo
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Boat Engine & Motor Inventions & Patents
Clixoo Boats is a comprehensive guide and directory for boats. This section of Clixoo Boats is about Boat Engine & Motor Inventions & Patents. (Clixoo Boats Home)
See Boat Patents Section of Clixoo Boats for all Boat Patent Resources
Boat Motors
1 Outboard boat motor support device - The present invention provides a device to support an outboard boat motor.
Patent number: 4842239 Filing date: Jan 11, 1988 Issue date: Jun 27, 1989
2 Spring action boat motor support – An adjustable boat motor support means attachable to the boat transom or trailer.
Patent number: 4650427 Filing date: Jul 21, 1986 Issue date: Mar 17, 1987
3 Boat motor support - A boat motor support for use in towing a boat on a boat trailer.
Patent number: 4828186 Filing date: Feb 22, 1988 Issue date: May 9, 1989
4 Outboard boat motor mailbox
Patent number: D439723 Filing date: Mar 10, 2000 Issue date: Mar 27, 2001
5 Bow motor assembly and motor lift mechanism - A boat is equipped with a motor assembly mounted on a housing in the bow of the boat.
Patent number: 4668195 Filing date: Jul 15, 1985 Issue date: May 26, 1987
6 Electric boat motor - An improved electric boat motor of the type including a propelling motor, a support shaft, and a coupling member for rotatably coupling the support shaft to the boat. Patent number: 4610632 Filing date: May 14, 1984 Issue date: Sep 9, 1986
7 Boat motor reflector - An outboard motor signal made up of a plate-like member bent at right angles at one end as a support.
Patent number: 4993978 Filing date: Mar 12, 1990 Issue date: Feb 19, 1991
8 Transmission device, especially for boat motors - Transmission for boats, comprising an input shaft, a reversing mechanism and an output shaft .
Patent number: 5509863 Filing date: Mar 8, 1994 Issue date: Apr 23, 1996
9 Adjustable steering apparatus for outboard motors - A steering handle is pivotally connected to an outboard boat motor so that the handle may pivot freely with respect to the motor about a motor steering axis. Patent number: 5540606 Filing date: Jun 23, 1995 Issue date: Jul 30, 1996
10 Boat motor trolling attachment - The present invention discloses a boat motor trolling attachment for use in conjunction with a boat motor and propeller to achieve effective trolling speeds.
Patent number: 6397772 Filing date: Apr 6, 2000 Issue date: Jun 4, 2002
11 Stabilizer for a motor boat - The present invention provides a stabilizer attached to the cavitation plate on the leg of a motor boat motor. Patent number: 4968275 Filing date: Jun 15, 1989 Issue date: Nov 6, 1990
12 Remotely steerable mount for boat propulsion motor - A mounting arrangement for a boat's propulsion motor that permits steering of the boat by remote control.
Patent number: 7044815 Filing date: Apr 30, 2004 Issue date: May 16, 2006
13 Apparatus for mounting a motor to a boat - A motor mount for attaching a motor, such as a trolling motor, to a boat includes a bracket, a pair of pivotable support arms and a motor support.
Patent number: 5669794 Filing date: Dec 19, 1995 Issue date: Sep 23, 1997
14 Air intake device for outboard boat engine - An air intake device for a vertically oriented multi-cylinder outboard boat engine having vertically spaced fuel intake ports.
Patent number: 5832890 Filing date: Apr 29, 1997 Issue date: Nov 10, 1998
15 Outboard boat motor carrier Patent number: D363695 Filing date: Jun 14, 1994 Issue date: Oct 31, 1995
16 Boat motor mount
Patent number: D279561 Filing date: Apr 9, 1984 Issue date: Jul 9, 1985
17 Nonresonant boat motor - A nonresonant boat motor for imparting motion to a boat without generating a substantial level of sound.
Patent number: 6083061 Filing date: Jun 3, 1999 Issue date: Jul 4, 2000
18 Cover for boat motor control
Patent number: D338869 Filing date: Sep 23, 1991 Issue date: Aug 31, 1993
19 Boat motor flushing and lubricating accessory - A flushing system accessory comprises a one-piece connector and a lubricating-fluid vessel.
Patent number: 5823836 Filing date: May 22, 1997 Issue date: Oct 20, 1998
20 Propeller cage for a boat motor
Patent number: D325916 Filing date: Jul 20, 1989 Issue date: May 5, 1992
21 Boat propeller guard - The propellor guard described herein is designed primarily for the protection of manatee but is also useful in protection against injury to other animals and larger fish which might come in contact with a boat's propellor.
Patent number: 5066254 Filing date: Feb 12, 1990 Issue date: Nov 19, 1991
22 Flow control and protector device for an outboard motor - A device for protecting a propeller of a boat motor and for improving the efficiency and therefore the performance characteristics of the motor.
Patent number: 4832634 Filing date: Dec 16, 1987 Issue date: May 23, 1989
23 Lift for marine craft - According to the invention, a lift is provided having base beams, first and second pairs of lifting arms and lifting rails.
Patent number: 4787327 Filing date: Feb 26, 1987 Issue date: Nov 29, 1988
24 Boat motor conversion apparatus - A boat motor conversion apparatus for converting a line trimmer into a boat motor comprising a tube having an upper end and a lower end, the upper end adapted to be coupled to a line trimmer's motor housing.
Patent number: 5405277 Filing date: Mar 14, 1994 Issue date: Apr 11, 1995
25 Portable boat motor
Patent number: 638542 Filing date: Jun 7, 1899 Issue date: Dec 1899
26 Adjustable boat stabilizer - A boat stabilizer for attachment to the lower drive unit of a boat motor.
Patent number: 5048449 Filing date: Feb 9, 1990 Issue date: Sep 17, 1991
27 Planing motor boat hull - A planing boat hull including a bow, a transom, a keel.
Patent number: 4903626 Filing date: Jun 16, 1988 Issue date: Feb 27, 1990
28 Air intake device for outboard boat engine - An air intake device for a vertically oriented multi-cylinder outboard boat engine having an engine block, a crankcase, and vertically spaced fuel intake ports.
Patent number: 5870987 Filing date: Apr 30, 1997 Issue date: Feb 16, 1999
29 Pedal powered boat motor - A pedal-powered boat that uses a flexible shaft to drive a propeller.
Patent number: 6171157 Filing date: May 12, 2000 Issue date: Jan 9, 2001
30 Bow motor assembly - A boat is equipped with a motor assembly mounted on a housing in the bow of the boat.
Patent number: 4529386 Filing date: Dec 27, 1982 Issue date: Jul 16, 1985
31 Motor-boat hull - A motor-boat hull includes a planing bottom having a V-shaped forward portion.
Patent number: 4924797 Filing date: Jul 1, 1988 Issue date: May 15, 1990
32 Boat construction - The hull of the boat incorporates a deep-V forward section and a rear tunnel section extending longitudinally rearward from a midpoint of the boat.
Patent number: 5833502 Filing date: Jun 19, 1996 Issue date: Nov 10, 1998
33 Rear light for a motor boat propeller to facilitate safe trailer transport of the motor boat - A tail light to be installed onto the end of a boat motor propeller, to increase visibility of the propeller when the boat is being hauled on a trailer.
Patent number: 6971933 Filing date: Feb 18, 2005 Issue date: Dec 6, 2005
34 Outboard motor handling and storing device - An outboard boat motor handling and storing apparatus which may be mounted in the back of a vehicle.
Patent number: 4465423 Filing date: May 10, 1982 Issue date: Aug 14, 1984
35 Outboard motor support device - An outboard boat motor support device is attachable between the boat transom and outboard motor.
Patent number: 5795202 Filing date: Sep 4, 1996 Issue date: Aug 18, 1998
36 Electric motor drive for a boat - An electric motor drive comprising an electric motor within a housing and coupled to a propeller; a hollow cylindrical rotatable drive shaft projecting from the housing along a vertical axis of rotation. Patent number: 5580287 Filing date: Aug 30, 1995 Issue date: Dec 3, 1996
37 Efficient motors and controls for watercraft - Electronic control systems, devices and algorithms are described for improving boat efficiency, safety and convenience, particularly for electric motor powered boats.
Patent number: 6659815 Filing date: Jun 10, 2002 Issue date: Dec 9, 2003
38 Remote controlled driving system for a boat - An electric trolling motor is remotely controlled by a hand held or foot operated radiant energy transmitter coacting with a receiver, the trolling motor and a turning or directional motor connected through gearing with a trolling motor support shaft.
Patent number: 4614900 Filing date: May 3, 1985 Issue date: Sep 30, 1986
39 Idle speed control system for a marine propulsion system - An idle speed control system for a marine propulsion system controls the amount of fuel injected into the combustion chamber of an engine cylinder as a function of the error between a selected target speed and an actual speed. Patent number: 6109986 Filing date: Dec 10, 1998 Issue date: Aug 29, 2000
40 Motor pod for pontoon boat – The invention discloses a pontoon boat adapted to be propelled by an outboard motor, the boat having a deck and pair of longitudinally extending parallel spaced apart pontoons depending from the deck and a means for mounting the outboard motor to the boat. Patent number: 5259331 Filing date: Jun 11, 1992 Issue date: Nov 9, 1993
41 Multicell battery monitoring system - A continuously monitored battery operated power supply for maritime applications includes four batteries.
Patent number: 5675234 Filing date: Jul 10, 1996 Issue date: Oct 7, 1997
42 Boat propeller guard - A guard for protection of an outboard motor is described. Patent number: 4565533 Filing date: Oct 26, 1983 Issue date: Jan 21, 1986
43 Stabilizing fin for a motor boat - Each stabilizing fin is provided with a thickened trailing edge in order to act as a flap for inducing drag during start-up.
Patent number: 4995840 Filing date: Aug 4, 1989 Issue date: Feb 26, 1991
44 Boat trolling motor control - A motor control system for a boat used for fishing in which the propulsion motor is automatically responsive to a control system for moving the boat at a desired distance from a habitat where fish are suspected to be found.
Patent number: 5050519 Filing date: Jul 26, 1990 Issue date: Sep 24, 1991
45
Patent number: 5225761 Filing date: Jan 15, 1992 Issue date: Jul 6, 1993
46 Remotely controlled steering apparatus for outboard trolling motors - A control mechanism for a boat having a seat assembly to support a pilot.
Patent number: 4824408 Filing date: Jan 15, 1986 Issue date: Apr 25, 1989
47 Guide mounted boat trailer - A boat trailer is disclosed, having a rigid frame, a guide member adapted for guiding a boat being loaded onto or launched from the trailer.
Patent number: 5013206 Filing date: Jan 12, 1989 Issue date: May 7, 1991
48 Programmable boat lift control system - A boat lift control system may be programmed so that with a push of a button, either remotely or adjacent the system, the lift may lift or lower a boat to a pre-programmed elevation. Patent number: 5593247 Filing date: Sep 7, 1995 Issue date: Jan 14, 1997
49 Motor boat Patent number: D265820 Filing date: Apr 16, 1980 Issue date: Aug 17, 1982
50 Electric trolling motor steering device - A two-position geared steering device for an electric trolling motor is provided.
Patent number: 5439401 Filing date: Sep 2, 1994 Issue date: Aug 8, 1995
51 Boat hull - A motorized pleasure boat having an essentially V-shaped hull.
Patent number: 4492176 Filing date: Jan 4, 1982 Issue date: Jan 8, 1985
52 Outboard motor support - Disclosed herein is a shock arm adapted to be mounted between a trailer and the shaft of an outboard motor attached to a boat carried by the trailer.
Patent number: 4685888 Filing date: Mar 18, 1985 Issue date: Aug 11, 1987
53 Boat lift - A boat lift supported on a single stanchion that includes a sleeve assembly mounted for slidable movement on the stanchion.
Patent number: 4482268 Filing date: Oct 13, 1983 Issue date: Nov 13, 1984
54 Motor boat hydrofoil - The invention relates to a pair of five-sided hydrofoils for use in conjunction with the lower unit of a conventional outboard motor. Patent number: 5178089 Filing date: Sep 9, 1991 Issue date: Jan 12, 1993
55 Shallow water boat design - A boat provides full operation even in shallow water utilizing an outboard motor.
Patent number: 4713028 Filing date: Jun 19, 1986 Issue date: Dec 15, 1987
56 Boat lift - A boat lift includes a vertical H-beam driven into the floor of a body of water adjacent a pier.
Patent number: 4678366 Filing date: Jul 31, 1985 Issue date: Jul 7, 1987
57 Motor mounting system for an inflatable boat - A mounting system for an inflatable boat of the type having opposed first and second tubular gunwale sections.
Patent number: 6142839 Filing date: Sep 15, 1998 Issue date: Nov 7, 2000
58 Boat hull with underside channel - A motor boat hull is provided with a longitudinal channel formed in the central portion of the underside surface, starting at an intermediate location and terminating at the stern. Patent number: 4393802 Filing date: May 16, 1980 Issue date: Jul 19, 1983
59 Versatile motor boat - A versatile motor boat having front and rear casting platforms and side platforms, a center console and oppositely facing, front and rear seat assemblies.
Patent number: 6230648 Filing date: Mar 15, 2000 Issue date: May 15, 2001
60 Engine control for planing boat - An engine control for a planing-type boat having an engine powering a water propulsion unit is disclosed.
Patent number: 5967862 Filing date: Jun 8, 1998 Issue date: Oct 19, 1999
61 Anti-theft device for outboard motors - An anti-theft device for clamping and locking an outboard motor.
Patent number: 4557458 Filing date: Feb 21, 1984 Issue date: Dec 10, 1985
62 JetNet - The JetNet has a slightly flared bell shaped plastic resin head with wheels at the bottom, and an electric boat motor inside.
Patent number: 6539573 Filing date: Apr 5, 1999 Issue date: Apr 1, 2003
63 Outboard motor and boat - The present invention comprises an outboard motor.
Patent number: 5282764 Filing date: Jul 12, 1991 Issue date: Feb 1, 1994
64 Motor boat with auxiliary motor - A motor boat with auxiliary and main motors and having a transom with a pocket or recess constructed and arranged to receive and support an auxiliary outboard motor.
Patent number: 5108321 Filing date: Jun 12, 1990 Issue date: Apr 28, 1992
65 Motor boat
Patent number: D271964 Filing date: Nov 23, 1981 Issue date: Dec 27, 1983
66 Outboard-motor-mounted safety light apparatus - An outboard-motor-mounted safety light apparatus is provided for an outboard motor and includes an electrical lamp assembly.
Patent number: 5613886 Filing date: Sep 1, 1995 Issue date: Mar 25, 1997
67 Pleasure boat with sails or motor - Pleasure boat with a sail or motor comprising a hull and a deck separated by an interface.
Patent number: 5188056 Filing date: Mar 11, 1991 Issue date: Feb 23, 1993
68 Jet boat with improved hull design and engine placement - A jet powered boat may be provided with a water monitor for fire fighting purposes.
Patent number: 6343964 Filing date: Nov 14, 2000 Issue date: Feb 5, 2002
69 Boat with center pontoon and separate motor mount - A center pontoon for a pontoon boat provides improved performance and an adjustable engine mount. Patent number: 6477969 Filing date: May 3, 2001 Issue date: Nov 12, 2002
70 Engine start system for a small boat - A small watercraft includes a hull. Patent number: 5873322 Filing date: Oct 18, 1996 Issue date: Feb 23, 1999
72 Remote control system for marine engine - A remote control system for a watercraft having a remotely positioned control device and a plurality of control device for operating the engine speed, transmission control and starter.
Patent number: 4817466 Filing date: Nov 13, 1986 Issue date: Apr 4, 1989
73 Collapsible pontoon boat - A collapsible pontoon boat includes a deck assembly and a plurality of inflatable pontoons for receiving and supporting the deck assembly. Patent number: 4562786 Filing date: Mar 27, 1984 Issue date: Jan 7, 1986
74 Marine propulsion device fuel distribution system - A marine propulsion installation for use on a boat having an exterior and an interior.
Patent number: 4722708 Filing date: Apr 26, 1985 Issue date: Feb 2, 1988
75 Outboard motor carrier for motor vehicle - A rigid metal support arm is pivotally mounted at its lower end in a bracket secured to an appropriate external structure, such as a trailer hitch, on a vehicle. Patent number: 4381069 Filing date: May 13, 1982 Issue date: Apr 26, 1983
76 Inflatable boat - An inflatable boat has a pair of elongated inflatable side portions extending lengthwise of the boat. Patent number: 4329751 Filing date: Jul 1, 1980 Issue date: May 18, 1982
77 Drive arrangement for a planing boat - In a drive arrangement for a planing hull boat in which a drive shaft extends from a motor within the hull.
Patent number: 5066255 Filing date: Jun 20, 1990 Issue date: Nov 19, 1991
78 Collapsible boat - A boat having bottom and side panels.
Patent number: 5372085 Filing date: Sep 14, 1993 Issue date: Dec 13, 1994
79 High performance boat prop guard - A propeller guard including a multi-angled band formed of a plurality of independently radiused sections. Patent number: 6159062 Filing date: Jun 30, 1999 Issue date: Dec 12, 2000
80 Boat of the catamaran type, propelled mechanically - A boat of the catamaran type, which is mechanically propelled, preferably by means of an outboard motor.
Patent number: 4836298 Filing date: Jan 29, 1988 Issue date: Jun 6, 1989
81 Planing boat engine - A control arrangement for a planing-type boat having an engine powering a water propulsion device is disclosed. Patent number: 6021748 Filing date: Jun 8, 1998 Issue date: Feb 8, 2000
82 Outboard motor - Several embodiments of vibration damping devices for preventing the transmission of vibrations from the power head of an outboard motor to the transom of the boat to which it is attached.
Patent number: 4583953 Filing date: Jun 6, 1985 Issue date: Apr 22, 1986
83 Folding pontoon boat - A folding pontoon boat which can be folded to a lesser width unfolded to a greater operating width.
Patent number: 6564735 Filing date: Mar 6, 2002 Issue date: May 20, 2003
84 Raising and lowering aid for trolling motors - A raising and lowering aid for trolling motors which includes a pair of torsion springs, each having one end fixed. Patent number: 4634390 Filing date: Oct 10, 1985 Issue date: Jan 6, 1987
85 Boat stabilizer - A boat stabilizer is disclosed for substantially eliminating "porpoising" or up and down movement of the bow portion of a boat as the boat is moving through the water.
Patent number: 4708672 Filing date: Apr 18, 1986 Issue date: Nov 24, 1987
86 Outboard motor mounting arrangement - Disclosed herein is a marine propulsion installation comprising a marine propulsion device. Patent number: 4545770 Filing date: Apr 30, 1984 Issue date: Oct 8, 1985
87 Engine and outboard engine structure - A plurality of cylinders are defined in a single cylinder block, and a single cylinder head common to the cylinders is mounted on the cylinder block.
Patent number: 5553586 Filing date: Dec 16, 1994 Issue date: Sep 10, 1996
88 Boat trailer lighting system - A boat trailer lighting system apparatus includes a boat trailer for trailering a boat having an outboard motor mounted thereto.
Patent number: 5980073 Filing date: Oct 16, 1998 Issue date: Nov 9, 1999
89 Folding wheeled boat - A compact portable folding boat comprising a mid section with a wheel coupled to the front of the mid section.
Patent number: 4768454 Filing date: Feb 9, 1987 Issue date: Sep 6, 1988
90 Pontoon boat - A pontoon boat that includes a pair of pontoons, a chair, a parallel linkage system for maintaining the pontoons in spaced apart parallel relationship.
Patent number: 4730571 Filing date: Sep 26, 1986 Issue date: Mar 15, 1988
91 Propulsion system for a boat - A propulsion system for a boat utilizing two similar propulsion devices carried in a spaced apart relationship.
Patent number: 6132267 Filing date: Mar 15, 1999 Issue date: Oct 17, 2000
92 Jet propelled boat - A jet propelled boat whose propulsion unit is very compact vertically and in which entrance of the water into the exhaust system is effectively prevented.
Patent number: 4538996 Filing date: Feb 8, 1983 Issue date: Sep 3, 1985
93 Retractable trolling motor housing for boat - A motor boat having a retractable trolling motor which motor is surrounded by a housing.
Patent number: 5836794 Filing date: Sep 30, 1997 Issue date: Nov 17, 1998
94 Outboard motor lock - An outboard motor lock for boats wherein the outboard motor is secured to the boat transom.
Patent number: 4658607 Filing date: Nov 20, 1985 Issue date: Apr 21, 1987
95 Boat propulsion and handling system - An improved boat construction is disclosed in which a boat, having the typical elongated hull, bow and stern, has a bottom configured as a hydroplane including a transverse step spaced from the bow and stern. Patent number: 4977845 Filing date: Aug 14, 1989 Issue date: Dec 18, 1990
Boat Engines
1 Cooling device for boat engine - A number of embodiments of cooling systems for internal combustion engines
Patent number: 4991546 Filing date: Jun 30, 1989 Issue date: Feb 12, 1991
2 Exhaust device for small sized boat engine - A small watercraft embodying an improved exhaust system that is substantially completely water-cooled by a cooling jacket.
Patent number: 4989409 Filing date: Sep 22, 1989 Issue date: Feb 5, 1991
3 Exhaust cooling device for small sized boat engine - A small watercraft embodying an improved exhaust system that is substantially completely water-cooled by a cooling jacket.
Patent number: 5067448 Filing date: Sep 26, 1989 Issue date: Nov 26, 1991
4 Muffler for marine engine - An improved muffler for silencing the exhaust emitted from a water cooled marine engine.
Patent number: 5196655 Filing date: Oct 31, 1991 Issue date: Mar 23, 1993
5 Catalyzer installation for boat engines and method for catalytic exhaust gas cleaning - The invention relates to a catalyzer installation for spark-ignition engines
Patent number: 5167934 Filing date: Jun 16, 1989 Issue date: Dec 1, 1992
6 Marine engine cooling system valve assembly - A marine propulsion device comprising an internal combustion engine including a coolant conduit having an upstream conduit portion, a downstream conduit portion, and a passage portion extending between the upstream portion and the downstream portion.
Patent number: 4669988 Filing date: Aug 9, 1984 Issue date: Jun 2, 1987
7
Patent number: 5980342 Filing date: Oct 1, 1998 Issue date: Nov 9, 1999
8 Exhaust device for small sized boat engine - A small watercraft embodying an improved exhaust system that is substantially completely water-cooled by a cooling jacket.
Patent number: 5251439 Filing date: Jun 9, 1992 Issue date: Oct 12, 1993
9 Idle speed control system for a marine propulsion system - An idle speed control system for a marine propulsion system controls the amount of fuel injected into the combustion chamber of an engine cylinder as a function of the error between a selected target speed and an actual speed.
Patent number: 6109986 Filing date: Dec 10, 1998 Issue date: Aug 29, 2000
10 Relating to controlling emissions from two stroke engines - Method and apparatus for controlling emissions, particularly of unburnt hydrocarbons, from a two stroke engine.
Patent number: 4920932 Filing date: Mar 21, 1989 Issue date: May 1, 1990
11 Marine engine exhaust system and method - A marine engine exhaust system and method utilizes first and second enclosed, generally tubular chambers having generally parallel lengthwise dimensions and internal intermediate exhaust passageways.
Patent number: 4917640 Filing date: Mar 13, 1989 Issue date: Apr 17, 1990
12 Marine engine overheat detection system - The present invention is an overheat detection system for an engine having at least one cooling jacket which is drained of coolant when the engine stops running.
Patent number: 6015317 Filing date: Jul 1, 1998 Issue date: Jan 18, 2000
13 Water discharge diverter for outboard boat engines - A small tubular water discharge diverter has an externally threaded portion at one end for connection to the cooling water discharge port.
Patent number: 5061214 Filing date: Aug 27, 1990 Issue date: Oct 29, 1991
14 Method and device for winterizing boat engines - A system for winterizing boat engines includes a "Y" valve having stop cocks located on the common duct and each arm.
Patent number: 5035208 Filing date: Jul 17, 1989 Issue date: Jul 30, 1991
15 Radio controlled engine kill switch - An engine kill switch system has a transmitter and receiver which are linked through specific transmitted codes within a frequency.
Patent number: 5838227 Filing date: Apr 24, 1997 Issue date: Nov 17, 1998
16 Boat engine mounting - A boat engine mounting with an engine mount is secured to a stringer extending longitudinally of the hull.
Patent number: 5069414 Filing date: May 1, 1990 Issue date: Dec 3, 1991
17 One-piece air intake and flywheel cover for an outboard marine engine - An air intake system for an internal combustion engine associated with the power head of an outboard marine propulsion system.
Patent number: 5083538 Filing date: Jan 15, 1991 Issue date: Jan 28, 1992
18 Heat exchanger for marine engine cooling system - A heat exchanger assembly is provided for a marine propulsion system having a closed loop cooling system.
Patent number: 5746270 Filing date: Jan 30, 1996 Issue date: May 5, 1998
19 Internal combustion engines - A two stroke internal combustion engine having a transfer port and an exhaust port in a cylinder which are opened and closed in a timed relationship by the reciprocating movement of a piston.
Patent number: 4920745 Filing date: Aug 11, 1987 Issue date: May 1, 1990
20
Patent number: 5295880 Filing date: Jan 11, 1993 Issue date: Mar 22, 1994
21 Two stroke cycle internal combustion engines - A direct injected two stroke cycle internal combustion engine having a cylinder
Patent number: 4719880 Filing date: May 23, 1986 Issue date: Jan 19, 1988
22 Automatic speed control system for boats - An apparatus for accurately maintaining the speed of a motorboat at a value stet by an operator.
Patent number: 5074810 Filing date: Jun 29, 1990 Issue date: Dec 24, 1991
23 Marine engine corrosion prevention system - An apparatus and method for prevention of corrosion with the cooling system of an internal combustion engine is disclosed.
Patent number: 7036534 Filing date: Sep 30, 2003 Issue date: May 2, 2006
24 Marine safety system for positive-pressure engines - A safety system associated with an engine of a marine vessel wherein the safety system includes a blower, a control unit, and a plurality of sensors.
Patent number: 5069154 Filing date: Jul 27, 1990 Issue date: Dec 3, 1991
25 Fresh water marine engine flushing assembly and system - An assembly structured to flush a cooling system of a marine engine.
Patent number: 6645024 Filing date: Nov 16, 2001 Issue date: Nov 11, 2003
25 Heat exchanger for marine propulsion engines - A heat exchanger is provided for a pressurized, closed cooling system for a marine propulsion engine.
Patent number: 4306614 Filing date: Apr 22, 1980 Issue date: Dec 22, 1981
26 Air intake device for outboard boat engine - An air intake device for a vertically oriented multi-cylinder outboard boat engine having an engine block, a crank case, and vertically spaced fuel intake ports.
Patent number: 5833504 Filing date: Apr 29, 1997 Issue date: Nov 10, 1998
27 Explosive-gas marine engine
Patent number: 361931 Filing date: Nov 9, 1886 Issue date: Apr 1887
28 Marine engine super flushing and corrosion control system - A marine engine flushing system for super flushing the cooling system of a marine engine.
Patent number: 6997766 Filing date: May 10, 2005 Issue date: Feb 14, 2006
29 Apparatus and method for simultaneously flushing multiple outboard boat motors - Apparatus for simultaneously flushing multiple outboard boat motors, or for simultaneously flushing a boat motor and hosing down a boat.
Patent number: 7150665 Filing date: Aug 30, 2005 Issue date: Dec 19, 2006
30 Hydrofoil for marine outboard engine/marine outdrives - A hydrofoil for mounting on the lower unit of a marine outboard engine/marine outdrive which improves the performance and stability of a boat driven by the lower unit.
Patent number: 5138966 Filing date: Feb 12, 1991 Issue date: Aug 18, 1992
31 In-line insertion muffler for marine engines - An improved muffler for silencing the exhaust emitted from water cooled marine engine.
Patent number: 5262600 Filing date: Oct 31, 1991 Issue date: Nov 16, 1993
32 Power take-off system for marine engines - The present invention relates to a new type of marine power take-off system.
Patent number: 4595371 Filing date: Dec 30, 1983 Issue date: Jun 17, 1986
33 Fuel tank sump assembly for fuel injection engines - The present invention relates to modified fuel tanks for use in watercrafts.
Patent number: 5423702 Filing date: Jul 30, 1993 Issue date: Jun 13, 1995
34 Exhaust muffler for marine engines with two rows of cylinders - An exhaust muffler for marine engines with two rows of cylinders, especially V-engines.
Patent number: 5048291 Filing date: Nov 30, 1989 Issue date: Sep 17, 1991
35 Portable boat jacking and rotating apparatus - An apparatus for suspending and rotating a boat.
Patent number: 5051056 Filing date: Jan 10, 1990 Issue date: Sep 24, 1991
36 Fuel-water separator for marine and diesel engines - The invention provides a method for separating fuel from water in a marine propulsion system.
Patent number: 5993675 Filing date: Dec 31, 1997 Issue date: Nov 30, 1999
37 Planing boat engine - A control arrangement for a planing-type boat having an engine powering a water propulsion device is disclosed.
Patent number: 6021748 Filing date: Jun 8, 1998 Issue date: Feb 8, 2000
38 Marine engine mounting apparatus - A marine propulsion installation comprising a propulsion unit including a rotatably mounted propeller.
Patent number: 4666412 Filing date: May 30, 1985 Issue date: May 19, 1987
39 Visual indicating plug for outboard marine engines - A transparent drain plug for the submersible transmission case of an outboard marine engine.
Patent number: 4789363 Filing date: Sep 25, 1987 Issue date: Dec 6, 1988
40 Method and apparatus for cleaning marine equipment including boats, engines and trailers - An apparatus for rinsing the interior of a marine engine that is attached to a boat immediately after the boat has been removed from a body of water.
Patent number: 5111762 Filing date: Jun 22, 1990 Issue date: May 12, 1992
41 Marine engine stopping device - A device for shutting off or stopping a marine engine ignition system utilizing a transmitter for generating a wireless signal.
Patent number: 7083482 Filing date: Nov 17, 2004 Issue date: Aug 1, 2006
42 Jet boat - A jet propulsion unit having an improved exhaust silencing device that is comprised of an expansion chamber that extends across the rear end of the tunnel and which forms a lower closure therefore. Patent number: 5389022 Filing date: Nov 16, 1992 Issue date: Feb 14, 1995
43 Marine engine winterizing system - This is a system and procedure that uses either a hand pump system or an electric pump system to drain fresh water or sea water out of a marine engine.
Patent number: 6510862 Filing date: Sep 7, 2001 Issue date: Jan 28, 2003
44 Boat engine winterizing device - A device for winterizing boats by replacement of coolant water in the engine thereof with antifreeze solution.
Patent number: 5069259 Filing date: Nov 5, 1990 Issue date: Dec 3, 1991
45 Marine engine noise suppressor - An exhaust system in a boat for an internal combustion engine in the boat with the conventional round exhaust manifold of the engine connected by a rectangular cross sectional exhaust pipe to an exhaust chamber. Patent number: 5846107 Filing date: Jun 20, 1997 Issue date: Dec 8, 1998
46 Underwater exhaust system for marine engine - An underwater exhaust system for a water-cooled marine engine installed in a boat whose hull is molded of fiber-reinforced resin.
Patent number: 5863231 Filing date: May 19, 1997 Issue date: Jan 26, 1999
47 Liquefied gas evaporating device for marine engines - A liquefied gas evaporating device supplies liquefied petroleum gas to a marine engine.
Patent number: 6601389 Filing date: Aug 31, 2001 Issue date: Aug 5, 2003
48 Marine power generation and engine cooling - An on-board marine electrical power generator containing a conventional four-stroke, water-cooled outboard motor engine coupled to an alternator upon a transportable frame suitable for mounting on-board a boat. Patent number: 7005756 Filing date: Jan 25, 2002 Issue date: Feb 28, 2006 | ||