US3908579A - Outboard motor with dual cooling system - Google Patents

Outboard motor with dual cooling system Download PDF

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Publication number
US3908579A
US3908579A US444049A US44404974A US3908579A US 3908579 A US3908579 A US 3908579A US 444049 A US444049 A US 444049A US 44404974 A US44404974 A US 44404974A US 3908579 A US3908579 A US 3908579A
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US
United States
Prior art keywords
water jacket
water
rotor cavities
defining
jacket system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US444049A
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English (en)
Inventor
George E Miller
Michael J Griffith
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Outboard Marine Corp
Original Assignee
Outboard Marine Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Outboard Marine Corp filed Critical Outboard Marine Corp
Priority to US444049A priority Critical patent/US3908579A/en
Priority to CA215,860A priority patent/CA1012014A/en
Priority to IL46366A priority patent/IL46366A/en
Priority to DE19752506245 priority patent/DE2506245A1/de
Priority to JP50021406A priority patent/JPS50124394A/ja
Application granted granted Critical
Publication of US3908579A publication Critical patent/US3908579A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C11/00—Combinations of two or more machines or engines, each being of rotary-piston or oscillating-piston type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B53/00—Internal-combustion aspects of rotary-piston or oscillating-piston engines
    • F02B53/14—Adaptations of engines for driving, or engine combinations with, other devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B55/00—Internal-combustion aspects of rotary pistons; Outer members for co-operation with rotary pistons
    • F02B55/08—Outer members for co-operation with rotary pistons; Casings
    • F02B55/10—Cooling thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
    • F02B61/04—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving propellers
    • F02B61/045—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving propellers for marine engines
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • An outboard motor including a propulsion unit connected to a boat attachment element for providing vertical and horizontal swinging movement of the propulsion unit relative to the boat, which propulsion unit includes a rotary internal combustion engine including a first housing assembly comprising wall surfaces defining aligned first and second troehoid shaped rotor cavities and additional wall surfaces defining a first water jacket system adjacent to the first and second rotor cavities and having inlet and outlet ports, together with a second housing assembly comprising wall surfaces defining aligned third and fourth trochoid shaped rotor cavities and additional wall surfaces defining a second water jacket system adjacent to the third and fourth rotor cavities and having inlet and outlet ports bolts securing together the first and second housing assemblies a lower unit rigidly supporting the engine and including a propeller rotatably supported by the lower unit and operably connected to the engine. a water pump driven by the engine and having an inlet communicating with the water and a water conduit communicating between the pump and separately with each of the first and second water jacket system
  • the invention relates generally to outboard motors and, more particularly, to outboard motor engine cooling systems. Still more particularly, the invention re lates to cooling systems for outboard motors having a plurality of aligned combustion chambers.
  • the invention provides an outboard motor comprising a propulsion unit connected to a boat attachment means for vertical and horizontal swinging movement of the propulsion unit relative to the attachment, which propulsion unit includes an internal combustion engine including first and second combustion chambers arranged in alignment with each other, and first and second water jackets respectively associated with the first and second combustion chambers and respectively in cluding inlet ports and outlet ports, together with a lower unit rigidly supporting the engine and including a gear box normally partially submerged in water, a propeller rotatably supported by the gear box and operably connected to the engine, a water pump driven by the engine and having an inlet communicating with the water, and a water conduit communicating between the pump and separately with each of the first and second water jacket inlet ports.
  • the engine comprises a rotary internal combustion engine and the combustion chambers comprise aligned trochoid shaped cavities.
  • the invention also provides an outboard motor comprising a propulsion unit, connected to a boat attachment means for vertical and horizontal swinging movement of the propulsion unit relative to the attachment means, which propulsion unit includes a rotary internal combustion engine including a first housing assembly comprising means defining aligned first and second trochoid shaped rotor cavities and means defining a first water jacket system adjacent to the first and second rotor cavities and having inlet and outlet ports, a second housing assembly comprising means defining aligned third and fourth trochoid shaped rotor cavities and means defining a second water jacket system adjacent to the third and fourth rotor cavities and having inlet and outlet ports, and means securing together the first and second housing assemblies, together with a lower unit rigidly supporting the engine and including a gear box normally partially submerged in water, a propeller rotatably supported by the gear box and operably connected to the engine, a water pump driven by the engine and having an inlet communicating with the water, and a water conduit communicating between the pump and separately with each of the first
  • the first and second rotor cavities are aligned with the third and fourth rotor cavities
  • the first housing assembly comprises first and second housing members respectively including first wall means at least partially defining the first and second rotor cavities and second wall means at least partially defining first and second water jackets forming a part of the first water jacket system with the first Water jacket including the first water jacket system inlet port and with the second water jacket including the first water jacket system outlet port, together with an intermediate member located between the first and second housing members and including wall means further defining the first and second rotor cavities and additional wall means defining a third water jacket communicating between the first and second water jackets and forming a part of the first water jacket system.
  • the second housing assembly comprises third and fourth housing members respectively including first wall means at least partially defining the third and fourth rotor cavities and second wall means at least partially defining fourth and fifth water jackets forming a part of the second water jacket system with the fourth water jacket including the second water jacket system inlet port and the fifth water jacket including the second water jacket system outlet port, together with an intermediate member located between the third and fourth housing members and including wall means further defining the third and fourth rotor cavities and additional wall means defining a sixth water jacket communicating between the fourth and fifth water jackets and forming a part of "the second water jacket system.
  • an outboard motor including anin-line multi-combustion chamber engine having two parallel water jacket systems with each system being associated with at least one combustion chamber.
  • an outboard motor which includes a rotary internal combustion engine comprising two housing assemblies located in vertically aligned relation to each other, and each including a separate water jacket system supplied with cooling water from a common pump located in the outboard motor lower unit.
  • each housing assembly includes two rotating combustion chambers.
  • Still another of the principal features of the invention is the provision of an outboard motor having an engine with aligned multiple combustion chambers and a cooling arrangement adapted to optimize uniform cooling of the combustion chambers.
  • FIG. 1 is a side elevational view, partially broken away, partially in section, and partially schematic of a marine propulsion device in the form of an outboard motor including a multi-rotor rotary internal combustion engine.
  • FIG. 2 is a view taken generally along line 2-2 of FIG. 1, with parts broken away and in section.
  • FIG. 3 is a view taken generally along line 33 of FIG. 1, with parts broken away.
  • an outboard motor 11 which includes a propulsion unit 13 adapted to be connected to the stern of a boat by attachment means 15 affording horizontal swinging or steering rhovement of the propulsion unit 13 relative to the boat and affording vertical swinging movement of the propulsion unit 13 relative to the boat. Any suitable construction can be employed for such attachment means 15.
  • the propulsion unit 13 comprises a lower unit including a gear box 19 which can include a reversing transmission 21 and which rotatably supports a propeller 23.
  • a gear box 19 which can include a reversing transmission 21 and which rotatably supports a propeller 23.
  • Rigidly carried on the top of the lower unit 17 below the at-rest water line 25 is a bucket or water guard 27.
  • Rigidly carried on the top of the lower unit 17 within the bucket or water guard 27 is an internal combustion engine 29 having a plurality of vertically in-line combustion chambers.
  • the engine 29 is a'rotary internal combustion engine assembled from a vertically extending series of horizontally extending members, each of which includes one or more flat surfaces for mating with an adjacent flat surface of an adjacently located member.
  • the rotary internal combustion engine 29 comprises lower and upper housing assemblies 31 and 33, each including two rotor cavities.
  • the lower housing assembly 31 comprises first and second housing members 35 and 37, respectively including first wall means partially defining first and second trochoid shaped rotor cavities 39 and 41, and second wall means at least partially defining first and second water jackets 43 and 45 extending circumferentially of the rotor cavities 39 and 41.
  • an intermediate member 47 including means further defining the first and second rotor cavities 35 and 37 and the first and second water jackets 43 and 45 and additional means defining a third water jacket 49 arcuately extending intermediate the first and second rotor cavities 39 and 41 and providing a coolant passage connecting the first and second water jackets 43 and 45.
  • a lower end wall member 51 which further defines the first rotor cavity 39 and the first water jacket 43, and which includes (See FIG. 2) an inlet port 53 communicating with the first water jacket 43.
  • first and second housing members 35 and 37, the intermediate member 47, and the lower and upper end wall members 51 and 55 are assembled in parallel relation to one another with the trochoid shaped rotor cavities 39 and 41 in aligned relation by any suitable means, such as the bolts 59.
  • the upper housing assembly 33 includes third and fourth housing members 61 and 63 respectively including first wall means partially defining third and fourth trochoid shaped rotor cavities 65 and 67 and second wall means at least partially defining fourth and fifth water jackets 69 and 71 extending circumferentially of the third and fourth cavities 65 and 67.
  • a lower end wall member 77 which further defines the third rotor cavity 65 and the fourth water jacket 69 and which includes an inlet port 79 communicating with the fourth water jacket 69.
  • an upper end wall member 81 which further defines the fourth rotor cavity 67 and the fifth water jacket 71 and which includes an outlet port 83 for the fifth cooling jacket 71.
  • the upper and lower housing member 61 and 63, the intermediate member 73, and the lower and upper end wall members 77 and 81 are assembled in parallel relation to each other with the third and fourth trochoid shaped rotor cavities 65 and 67 in aligned relation by any suitable means, such as the bolts 85.
  • first, second, and third water jackets 43, 45 and 49 constitute a first water jacket system having an inlet port 53 and an outlet port 57
  • fourth, fifth and sixth water jackets 69, 71 and 75 constitute a second water jacket system having an inlet port 79 and an outlet port 83.
  • crankshaft 91 Extending vertically through the lower and upper housing assemblies 31 and 33 is a crankshaft 91 which includes a lower crankshaft portion 93 which is rotatably supported by the lower housing assembly 31 and which extends through the first and second rotor cavities 39 and 41, and an upper crankshaft portion 95 which is physically separate from the lower crankshaft portion 93, which is rotatably supported by the upper housing assembly'33, and which extends through the third and fourth rotor cavities 65 and 67.
  • the lower crankshaft portion 93 includes first and second eccentric portions 97 and 99 respectively rotatably supporting first and second rotors 101 and 103 in the first and second rotor cavities 39 and 41
  • the upper crankshaft portion 95 includes third and fourth eccentric portions 105 and 107 respectively rotatably supporting third and fourth rotors 109 and 1 1 1 extending in the third and fourth rotor cavities 65 and 67.
  • Each of the rotors v101, 103, 109 and 111 is generally triangular in shape and, in response to respective rotation in the first, second, third and fourth rotor cavities 39, 41, 65 and 67, generates first, second, third and fourth rotatable chambers in which combustion takes place.
  • gear means 115 for effecting relative rotation between the rotors 101, 103, 109 and 111 and the housing assemblies 31 and 33 and between the rotors 101, 103, 109 and 11 1 and the crankshaft 91 in response to combustion in the rotating chambers.
  • crankshaft portions 93 and 95 In order to operatively unify the upper and lower crankshaft portions 93 and 95, suitable coupling means 117 are provided therebetween to maintain the crankshaft portions 93 and 95 in proper angular relationship and to transmit torque.
  • Means are also provided for securing together the lower and upper housing assemblies 31 and 33 with all of the trochoid shaped rotor cavities 39, 41, 65 and 67 in alignment with one another.
  • securing means is provided by through bolts 1 19 extending through the lower and upper housing assemblies 31 and 33.
  • the upper end wall member 55 of the lower housing assembly 31 extends forwardly above the guard or bucket 27 and is connected to a kingpin 121 which forrns'a part of the beforementioned attachment means and which also extends into the lower unit 19
  • the upper crankshaft portion 95 extends above the upper end wall member 81 and is connected to a flywheel 125 which carries various components of a suitable ignition system.
  • the lower unit 17 further includes a water pump 131 which is driven by the engine 29 and which includes an inlet l33'normally located underwater. While other arrangements-could be employed, in the illustrated construction, theinlet 133 is located at the front end of the gear box 19 and communicates with the pump 131 through a duct 135 and through a passage 137 in the lower unit 17.
  • conduit means which communicates with the pump .131 and separately with each of the first and fourth water jackets 43 and 69. More particularly, such conduit means includes a pump discharge pipe or line 139 which communicates with the pump 131, which extends through the bucket 27, and which includes afirst branch pipe 141 communicating with the first water jacket inlet port 53 in the lower end Wall member 51 of the lower housing assembly 31, together with a second branch pipe 143 which communicates with the fourth cooling jacket inlet port 79 located in the lower end wall member 77 of the upper housing assembly 33.
  • Conduit means are also provided for discharging cooling water from the second and fifth water jackets 45 and 71. More specifically, the second water jacket outlet port 57 in the upper end wall 55 of the lower housing assembly 31 communicates with a discharge duct 15] which drains into a water jacket 153 extending around an exhaust gas discharge pipe 155 communicating with the rotor cavities 39, 41, 65 and 67. In addition, the fifth water jacket outlet port 83 in the upper end wall member 81 of the upper housing assembly 33 communicates with a discharge duct 161 which also drains into the water jacket 153 extending around the :exhaust gas discharge pipe 155.
  • the exhaust gas discharge pipe 155 is supported from the lower unit 17 for communication discharging cooling water from the second and fifth Water jackets 45 and 71.
  • one portion of the flow of cooling water discharged from the pump 131 flows through the first branch pipe 141 to the first water jacket 43 and then flows, in series: through the third water jacket 49 and through the second 'water' jacket 45 and through the dischargeduct 151 for overboard discharge.
  • Another portion of the cooling water discharged from the pump 131 flows through the second branch pipe 143 to the fourth water jacket 69 and then flows, in series, through the sixth water jacket 75, and through the fifth water jacket 71, and through the discharge duct 161* for overboard dischargein common with 'the'dis'c'harge' from the discharge duct 151.1-lowever, if desired,- separate overboard discharges for the second and fifth water jackets 45 and 71 can be employed.
  • the in-Iine'engine block includes two parallel water j'acketsys tems' each cooling one or more combustion chainbe'rsso as to reduce variation in heat withdrawn froriithe various combustion chambers and therebyfto provide for more uni form engine temperature and operation.
  • An outboard motor comprising means adapted for attachment to the ster'n of a boat and a propulsion unit connected to saidattachment means for vertical and horizontal swinging movement relative tosaid attachment means, said propulsion unit includingja rotary internal combustion engine including a first housing assembly comprising means defining aligned first second trochoid shaped rotor.
  • first housing assembly further comprising first and second housing members respectively including first wall means at least partially defining said first and second rotor cavities and second wall means at least partially defining first and second Water jackets forming a part of said first water jacket system, said first water jacket including said first water jacket system inlet port and said second water jacket including said first water jacket system outlet port, said first housing assembly further comprising an intermediate member located between said first and second housing members and including wall means further defining said first and second rotor cavities and additional wall means defining a third water jacket communicating between said first and second water jackets and forming a part of said first water jacket system, a second housing assembly comprises means defining aligned third and fourth trochoid shaped rotor cavities and means defining a second water jacket system adjacent to said third and fourth rotor cavities and having inlet and outlet ports, said second housing assembly comprising third and fourth housing members respectively including first wall
  • An outboard motor in accordance with claim 2 andfurther including an exhaust pipe communicating with said combustion chambers and wherein said overboard water discharge means includes a water jacket located around said exhaust pipe and communicating with an underwater discharge outlet.
  • An outboard motor comprising means adapted for attachment to the stern of a boat and a propulsion unit connected to said attachment means for vertical and horizontal swinging movement relative to said attachrrre'nt means, said propulsion unit including a rotary internal combustion engine including a first housing assembly comprising means defining aligned first and secondti'ochoid shaped rotor cavities and means defining a first water jacket system adjacent to said first and second rotor cavities and having inlet and outlet ports, said first housing assembly further comprising first and second housing members respectively including first wall means at least partially defining said first and second rotor cavities and second wall means at least partially defining first and second water jackets forming a part of said first water jacket system, said first water jacket including said first water jacket system inlet port and said second water jacket including said first water jacket system outlet port, a second housing assembly comprising means defining aligned third and fourth trochoid shaped rotor cavities and means defining a second water jacket system adjacent to said third and fourth rotor cavities and having inlet and

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Exhaust Silencers (AREA)
  • Rotary Pumps (AREA)
  • Supercharger (AREA)
US444049A 1974-02-20 1974-02-20 Outboard motor with dual cooling system Expired - Lifetime US3908579A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US444049A US3908579A (en) 1974-02-20 1974-02-20 Outboard motor with dual cooling system
CA215,860A CA1012014A (en) 1974-02-20 1974-12-12 Outboard motor with dual cooling system
IL46366A IL46366A (en) 1974-02-20 1974-12-30 Outboard motor with dual cooling system
DE19752506245 DE2506245A1 (de) 1974-02-20 1975-02-14 Aussenbordmotor
JP50021406A JPS50124394A (enrdf_load_stackoverflow) 1974-02-20 1975-02-20

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US444049A US3908579A (en) 1974-02-20 1974-02-20 Outboard motor with dual cooling system

Publications (1)

Publication Number Publication Date
US3908579A true US3908579A (en) 1975-09-30

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US444049A Expired - Lifetime US3908579A (en) 1974-02-20 1974-02-20 Outboard motor with dual cooling system

Country Status (5)

Country Link
US (1) US3908579A (enrdf_load_stackoverflow)
JP (1) JPS50124394A (enrdf_load_stackoverflow)
CA (1) CA1012014A (enrdf_load_stackoverflow)
DE (1) DE2506245A1 (enrdf_load_stackoverflow)
IL (1) IL46366A (enrdf_load_stackoverflow)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4145988A (en) * 1976-04-13 1979-03-27 Yamaha Hatsudoki Kabushiki Kaisha Exhaust system for outboard marine propulsion unit
US5045001A (en) * 1990-03-12 1991-09-03 Outboard Marine Corporation Auxiliary automatic cooling water supply for marine engines
US5381763A (en) * 1993-09-28 1995-01-17 Outboard Marine Corporation Dry head cooling system
US5766046A (en) * 1995-06-23 1998-06-16 Sanshin Kogyo Kabushiki Kaisha Cooling water pickup for marine propulsion unit
US5937802A (en) * 1997-10-08 1999-08-17 Brunswick Corporation Engine cooling system
US6022251A (en) * 1995-09-06 2000-02-08 Sanshin Kogyo Kabushiki Kaisha Water inlet for marine drive
US6053784A (en) * 1996-12-20 2000-04-25 Sanshin Kogyo Kabushiki Kaisha Cooling system for outboard motor
US6068529A (en) * 1996-12-05 2000-05-30 Brunswick Corporation Marine propulsion unit with dual water inlet structure
US6234855B1 (en) 1998-08-07 2001-05-22 Sanshin Kogyo Kabushiki Kaisha Driveshaft housing for outboard motor
US6343966B1 (en) 2000-10-12 2002-02-05 Brunswick Corporation Marine propulsion system having a water pump driven by an electric motor
US20220016825A1 (en) * 2020-07-20 2022-01-20 Cantex, Inc. Pipe bell end ring flare system and method of use thereof
USD987784S1 (en) 2020-07-20 2023-05-30 Cantex, Inc. Pipe bell end ring flare device

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6129996U (ja) * 1984-07-26 1986-02-22 本田技研工業株式会社 船外機の水冷装置
JPS61187508A (ja) * 1985-02-15 1986-08-21 Yanmar Diesel Engine Co Ltd 船外機のオイルク−ラ−
DE3545821A1 (de) * 1985-12-23 1987-07-02 Wankel Gmbh Fluessigkeitsgekuehltes gehaeuse einer rotationskolbenbrennkraftmaschine
JPH0260699U (enrdf_load_stackoverflow) * 1988-10-28 1990-05-07
JP3978265B2 (ja) * 1997-09-12 2007-09-19 本田技研工業株式会社 船外機の排気通路

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1786835A (en) * 1928-10-20 1930-12-30 Outboard Motors Corp Water-cooling system for outboard motors
US3077867A (en) * 1958-10-07 1963-02-19 Nsu Motorenwerke Ag Multiple arrangement of rotary combustion engines
US3286700A (en) * 1963-08-22 1966-11-22 Nsu Motorenwerke Ag Fluid cooled housing for internal combustion engines
US3431882A (en) * 1967-03-26 1969-03-11 Outboard Marine Corp Marine propulsion device
US3520270A (en) * 1968-05-29 1970-07-14 Outboard Marine Corp Tuned exhaust gas system for outboard motor
US3552121A (en) * 1967-12-25 1971-01-05 Yanmar Diesel Engine Co Means for preventing reverse water flow through exhaust pipe of a rotary piston type marine engine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2224900A (en) * 1938-06-06 1940-12-17 Outboard Marine & Mfg Co Outboard motor
US2460419A (en) * 1943-04-14 1949-02-01 Metal Products Corp Outboard motor
US3084657A (en) * 1961-06-16 1963-04-09 Kiekhaefer Corp Suspension system for outboard motors

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1786835A (en) * 1928-10-20 1930-12-30 Outboard Motors Corp Water-cooling system for outboard motors
US3077867A (en) * 1958-10-07 1963-02-19 Nsu Motorenwerke Ag Multiple arrangement of rotary combustion engines
US3286700A (en) * 1963-08-22 1966-11-22 Nsu Motorenwerke Ag Fluid cooled housing for internal combustion engines
US3431882A (en) * 1967-03-26 1969-03-11 Outboard Marine Corp Marine propulsion device
US3552121A (en) * 1967-12-25 1971-01-05 Yanmar Diesel Engine Co Means for preventing reverse water flow through exhaust pipe of a rotary piston type marine engine
US3520270A (en) * 1968-05-29 1970-07-14 Outboard Marine Corp Tuned exhaust gas system for outboard motor

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4145988A (en) * 1976-04-13 1979-03-27 Yamaha Hatsudoki Kabushiki Kaisha Exhaust system for outboard marine propulsion unit
US5045001A (en) * 1990-03-12 1991-09-03 Outboard Marine Corporation Auxiliary automatic cooling water supply for marine engines
US5381763A (en) * 1993-09-28 1995-01-17 Outboard Marine Corporation Dry head cooling system
US5766046A (en) * 1995-06-23 1998-06-16 Sanshin Kogyo Kabushiki Kaisha Cooling water pickup for marine propulsion unit
US6022251A (en) * 1995-09-06 2000-02-08 Sanshin Kogyo Kabushiki Kaisha Water inlet for marine drive
US6068529A (en) * 1996-12-05 2000-05-30 Brunswick Corporation Marine propulsion unit with dual water inlet structure
US6347969B1 (en) 1996-12-20 2002-02-19 Sanshin Kogyo Kabushiki Kaisha Cooling system for outboard motor
US6053784A (en) * 1996-12-20 2000-04-25 Sanshin Kogyo Kabushiki Kaisha Cooling system for outboard motor
US5937802A (en) * 1997-10-08 1999-08-17 Brunswick Corporation Engine cooling system
US6234855B1 (en) 1998-08-07 2001-05-22 Sanshin Kogyo Kabushiki Kaisha Driveshaft housing for outboard motor
US6343966B1 (en) 2000-10-12 2002-02-05 Brunswick Corporation Marine propulsion system having a water pump driven by an electric motor
US20220016825A1 (en) * 2020-07-20 2022-01-20 Cantex, Inc. Pipe bell end ring flare system and method of use thereof
US11628613B2 (en) * 2020-07-20 2023-04-18 Cantex, Inc. Pipe bell end ring flare system and method of use thereof
USD987784S1 (en) 2020-07-20 2023-05-30 Cantex, Inc. Pipe bell end ring flare device
US11833735B2 (en) 2020-07-20 2023-12-05 Cantex, Inc. Pipe bell end ring flare system and method of use thereof
USD1077152S1 (en) 2020-07-20 2025-05-27 Cantex, Inc. Pipe bell end ring flare device

Also Published As

Publication number Publication date
JPS50124394A (enrdf_load_stackoverflow) 1975-09-30
IL46366A (en) 1977-03-31
IL46366A0 (en) 1975-03-13
CA1012014A (en) 1977-06-14
DE2506245A1 (de) 1975-08-21

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