US3463116A - Self-propelled water skimmers - Google Patents
Self-propelled water skimmers Download PDFInfo
- Publication number
- US3463116A US3463116A US688214A US3463116DA US3463116A US 3463116 A US3463116 A US 3463116A US 688214 A US688214 A US 688214A US 3463116D A US3463116D A US 3463116DA US 3463116 A US3463116 A US 3463116A
- Authority
- US
- United States
- Prior art keywords
- skimmer
- water
- prime mover
- rudder
- engine
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title description 43
- 241000238634 Libellulidae Species 0.000 title 1
- 241000305776 Rynchops Species 0.000 description 38
- 241000272168 Laridae Species 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B32/00—Water sports boards; Accessories therefor
- B63B32/10—Motor-propelled water sports boards
-
- 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
- a self-propelled water skimmer includes a body with the general configuration of a surfboard and an impeller mounted in a water passage in the body of the skimmer for rotation about a vertical axis.
- the impeller is driven by a prime mover secured to the rear portion of the body and has a vertical output shaft projecting into the water passage, the impeller being secured to the output shaft.
- This invention relates to self-propelled water skimmers. Such skimmers are sometimes referred to as motorized surfboards.
- an engine-driven impeller is located in a water passage in the rear portion of the skimmer.
- the impeller draws in water through an inlet to the passage and expels the water as a jet through an outlet from the passage to propel the skimmer forwardly.
- This type of propulsion is preferable to the use of an externally-mounted propeller since a propeller may injure someone in the water.
- An impeller cannot injure anyone in this way since it is located within the body of the skimmer.
- the engine or other prime mover is mounted so as to provide a substantially vertical output shaft which projects into the water passage, the impeller being mounted on the shaft.
- the engine or other prime mover may be mounted on a member which is substantially level with the deck of the skimmer, thereby reducing the likelihood of flooding of the engine or other prime mover.
- the water skimmer may be provided with a rudder which is responsive to the force exerted by the water jet in such a manner that, when the prime mover is at idling speed, the rudder steers the skimmer in a circular path and, when the prime mover is substantially above idling speed, the rudder is moved by the water jet to a straight ahead position.
- the speed of the prime mover may be controlled by a squeezable handgrip connected to the prime mover by a Bowden cable arrangement, the handgrip containing a series of links so arranged that squeezing of the handgrip causes relative movement between the outer and inner parts of the Bowden cable assembly to increase the speed of the prime mover.
- the arrangement may be such that, if an operator falls off the skimmer and loses grip of the handgrip, the speed of the prime mover is automatically reduced to idling speed.
- the skimmer has a rudder as mentioned above, the skimmer will then be steered in a circular path, thus making it easy for the operator to reboard the skimmer.
- FIG. 1 is a perspective view of a water-skimmer
- FIG. 2 is a fragmentary plan view with certain parts removed to show the water passage
- FIG. 3 is a longitudinal sectional view taken along the line 33 of FIG. 2,
- FIG. 4 is an exploded perspective view of the impeller housing
- FIG. 5 is a fragmentary side view of the rudder assembly
- FIG. 6 is a longitudinal sectional view of the hand-grip which actuates the throttle.
- a water-skimmer has a body 1 which in general configuration resembles a surf-board.
- the body 1 has a raised portion adjacent its rear end, the rear end being formed by a stern 3 which is substantially vertical and extends the full width of the body 1 at right angles to the longitudinal axis of the body.
- the opposite sides 4 of the body I extend in a parallel manner from the rear end to a near mid-length position 5, and then curve towards one another to merge into a partspherical bow 6.
- the sides 4 are gently radiused to merge with the underside '7 and the deck 8. From the near midlength position 5, the underside 7 extends forwardly and upwardly at an angle A to the rear horizontal portion of the underside so as to merge with the deck 8 at the how 6.
- Near the how 6 are two laterally-spaced rings 9 to which handlines 11 are attached.
- the body 1 has a buoyant foam core 12 with a fibre glass skin 13.
- the raised portion 2 of the body 1 forms an engine housing and has a hinged cover 14 given access to an engine compartment 15.
- the engine 16 is an internal combustion engine secured to the floor of the compartment 15 with its crankshaft 18 vertical and the longitudinal axis of its cylinder 19 horizontal.
- the crankshaft 18 extends downwardly through the floor 17 into a water passage 21, and a centrifugal impeller 22 in the water passage 21 is mounted on the crankshaft 18 so that the engine 16 is above the water level.
- the water passage 21 includes an intake duct 23 which has an inlet 24 in the underside 7 of the body 1 and extends upwardly and rearwardly from the inlet 24 to the medial area of the lower side of the impeller 22.
- the intake duct 23 communicates at its upper end with a pump chamber 25 in which the impeller 22 is eccentrically mounted.
- a discharge duct 26 extends from the pump chamber 25 to an outlet 27 at the stern 3.
- FIG. 4 shows two impeller housing members 28 which form the pump chamber 25 and the initial portion of the discharge duct 26.
- the members 28 form a bafiie 29 created by intersecting curvatures at the junction of the pump chamber 25 and the discharge duct 26 to help arrest return eddies and build up discharge pressure.
- the impeller 22 (shown in dotted outline) rotates in a clockwise direction.
- the rear portion of the discharge duct 26 is an enlarged portion 31 which forms a rearwardly-facing shoulder 32 at its junction with the initial portion of the discharge duct 26.
- a rudder 33 is pivotally mounted for movement about a vertical axis on one side of the discharge duct 26 at a laterally-inner edge of the shoulder 32.
- a spring 34 urges the rudder 33 angularly towards the longitudinal axis of the discharge duct 26, the strength of the spring 34 being such as to achieve a desired effect which will be described later.
- the engine 16 has a throttle lever 35 which is remotely actuated by a handgrip 36 connected to the lever 35 by a Bowden cable assembly 37.
- the handgrip 36 has a hollow flexible housing 38 secured to the outer casing 39 of the Bowden cable assembly 37.
- a first pair of links 41 are pivotally connected at one end to a collar 42 rigidly secured to the outer casing 39 of the Bowden cable assembly 37.
- a second pair of links 43 are pivotally connected at one end by pivotal connections 44 to the opposite ends of links 41 and are pivotally connected at the other end to the inner wire 45 of the Bowden cable assembly 37.
- the pivotal connections 44 engage metal guides 45a mounted in the housing 38.
- the throttle lever 35 is resiliently biased by a spring (not shown) to the position shown in FIG. 3 at which the engine 16 idles.
- a spring not shown
- the links 41, 43 are displaced from the position shown in full outline in FIG. 6 towards the position shown in dotted outline, with the pivotal connections 44 being guided by guides 45a, to cause relative movement between the inner wire 45 and outer casing 39 of the Bowden cable assembly 37 and thereby actuate the throttle lever 35 to increase engine speed.
- the carburetor 46 of the engine 16 is connected by a fuel pipe 47 to a fuel tank 48 embedded in the body 1.
- An electrical switch 49 is mounted in the housing 38 of the handgrip 36 and is connected by wires 51 to an electrical generator (not shown) driven by the engine 16 and to a siren 52.
- the siren 52 can be operated by pressing the switch 49.
- the generator is also connected by wires 53 to a headlight 54 attached to the deck 8 near the bow 6 by a vacuum cup 55 and to sidelights 56 at opposite side of the raised portion 2. Switches (not shown) are provided for controlling operation of the headlight 54 and sidelights 56.
- the engine compartment contains a storage compartment 57 for storage of the headlight 54 when not in use.
- the operator starts the engine 16 which then idles at such a speed that very little propolling force is applied by the impeller 22 to the Water jet.
- the force exerted by the water jet on the rudder 33 is less than the amount produced by an engine speed just above idling, the spring 34 forces the rudder 33 to move angularly towards the center of the discharge duct 26 so that skimmer is steered in a circular path.
- any forward movement of the skimmer while the engine is idling is in a circular path.
- the operator After starting the engine, the operator sits, kneels or stands on the deck 8 holding the handlines 11 and the handgrip 36.
- the throttle lever 35 By squeezing the handgrip 36, the throttle lever 35 is actuated to increase engine speed and consequently the speed of the water jet discharged from the outlet 27.
- the rudder 33 is moved to the straight ahead position by the more powerful water jet which overcomes the spring 34, and the skimmer moves forwardly in a substantially straight line. During such movement, the operator can sound the siren 52 if necessary by pressing the switch 49 on the handgrip 36.
- the throttle lever 35 is returned to the idling position by its spring (not shown).
- the engine speed therefore reduces to idling speed and consequently the rudder 33 is returned to the circling position by the spring 34.
- the skimmer travels at a slow speed in a circular path, making it easy for the operator to reboard the skimmer.
- the invention provides a water skimmer with a compact propulsion unit and this enables the water skimmer to be constructed so as to have a relatively high buoyancy, to be self-righting, and to be capable of relatively high speeds, in addition to having the features already mentioned.
- a self-propelled water skimmer including a body with the general configuration of a surfboard, the body having a raised rear portion containing a prime mover compartment having a fixed floor, the body also having a water passage passing below the floor of the prime mover compartment from an inlet to an outlet, a prime mover located in said compartment and fixedly secured to said floor, the prime mover having a substantially vertical output shaft projecting downwardly through said floor into the water passage, and an impeller located in the water passage and mounted on the shaft for rotation by the prime mover about a substantially vertically axis to discharge a water jet from the passage outlet to propel the skimmer.
- a water skimmer according to claim 1 wherein the body has a deck extending forward from the raised portion and the floor of the prime mover compartment is substantially level with the deck.
- a water skimmer according to claim 1 including a rudder mounted adjacent the outlet of the water passage for angular movement about a substantially vertical axis, and resilient means urging the rudder towards a position in which the skimmer is steered in a circular path, the strength of the resilient means being such that, when the prime mover is at idling speeds, the resilient means maintains the rudder in the circular path position and, when the prime mover is substantially above idling speed, the force exerted by the water jet on the rudder moves the rudder to a straight ahead position.
- a water skimmer including a squeezable handgrip connected to the prime mover by a Bowden cable assembly for remotely controlling the speed of the prime mover, said Bowden cable assembly having relatively movable inner and outer parts, said handgrip including a housing secured to the outer part and two pairs of links, one end of a first link in each pair being pivotally connected to the outer part, the other ends of said first links being pivotally connected to one end of the second link of the respective pair, the other ends of said second links being pivotally connected to the inner part of the Bowden cable assembly, and said first links diverging from the outer part to their pivotal connections with the second links and said second links converging from the last mentioned pivotal connections to the inner part, whereby squeezing of the handgrip causes relative movement of the links and consequent relative movement of the Bowden cable parts to increase the speed of the prime mover.
- a water skimmer according to claim 1 including a rudder mounted adjacent the outlet of the water passage for angular movement about a substantially vertical axis, resilient means urging the rudder towards a position in which the skimmer is steered in a circular path, the strength of the resilient means being such that, when the prime mover is at idling speeds, the resilient means maintains the rudder in the circular path position and, when the prime mover is substantially above idling speed, the force exerted by the water jet on the rudder moves the rudder to the straight ahead position, a manually operable handgrip connected to the prime mover by a flexible cable assembly for remotely controlling the speed of the prime mover, and means for causing the prime mover to operate at idling speed in the absence of manual operation of the handgrip.
Landscapes
- Engineering & Computer Science (AREA)
- Ocean & Marine Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- Toys (AREA)
- Catching Or Destruction (AREA)
Description
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA4628 | 1967-11-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3463116A true US3463116A (en) | 1969-08-26 |
Family
ID=4083886
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US688214A Expired - Lifetime US3463116A (en) | 1967-11-09 | 1967-12-05 | Self-propelled water skimmers |
Country Status (4)
Country | Link |
---|---|
US (1) | US3463116A (en) |
DE (1) | DE1807619A1 (en) |
FR (1) | FR1591392A (en) |
GB (1) | GB1192277A (en) |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3789792A (en) * | 1972-02-03 | 1974-02-05 | D Smith | Motorized swimming aid |
WO1981001540A1 (en) * | 1979-11-26 | 1981-06-11 | Surf Jet Corp | Power operated surfboard |
US5582529A (en) * | 1994-03-03 | 1996-12-10 | Montgomery; Robert E. | High performance motorized water ski |
USD424008S (en) * | 1998-09-08 | 2000-05-02 | Robert Eglington Montgomery | Motorized water ski |
US6192817B1 (en) | 1999-07-08 | 2001-02-27 | Andrzej Dec | Motorized surfboard |
US6568340B2 (en) | 2000-11-14 | 2003-05-27 | Andrzej Dec | Motorized wakeboard |
US20060270289A1 (en) * | 2005-05-26 | 2006-11-30 | Blakely John F | Surfboard deck grip with storage compartment |
US20090061704A1 (en) * | 2007-08-27 | 2009-03-05 | Yuting Rui | Weed Cutter for a Craft Propelled by a Water Jet |
US20090093174A1 (en) * | 2007-10-09 | 2009-04-09 | Yuting Rui | Watercraft Propelled By a Water Jet |
US20090117789A1 (en) * | 2007-11-01 | 2009-05-07 | Yuting Rui | Engine for Driving a Watercraft Propelled by a Water Jet |
US20090124144A1 (en) * | 2007-11-14 | 2009-05-14 | Yuting Rui | System for Steering and Maneuvering a Watercraft Propelled by a Water Jet |
US20160114874A1 (en) * | 2013-03-05 | 2016-04-28 | Hydrojet Drive Systems, Inc. | WaterCraft Propulsion System and Method of Propelling a WaterCraft Through Water |
US10150544B2 (en) | 2016-10-12 | 2018-12-11 | R&D Sports LLC | Personal watercraft for amplifying manual rowing or paddling with propulsion |
US10683075B2 (en) | 2016-10-12 | 2020-06-16 | R&D Sports LLC | Personal watercraft for amplifying manual rowing or paddling with propulsion |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4101996A (en) * | 1976-10-18 | 1978-07-25 | Larry Gene Mikulecky | Foot propelled water vehicle |
US4457724A (en) * | 1980-12-27 | 1984-07-03 | Fuji Jukogyo Kabushiki Kaisha | Apparatus for driving a surfboard |
US7022223B2 (en) | 2003-05-13 | 2006-04-04 | Tesomas Holdings Llc | Methods and systems for removing floating solid waste from the surface of a watercourse |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1141185A (en) * | 1955-04-29 | 1957-08-27 | Water vehicle, usable, in particular as a bathing and water sports machine | |
US3046697A (en) * | 1960-02-05 | 1962-07-31 | Eldon Ind Inc | Toy motor boats |
US3224408A (en) * | 1964-05-21 | 1965-12-21 | George W Downs | Propulsion device |
US3324822A (en) * | 1965-10-23 | 1967-06-13 | Iii George A Carter | Motorized surfboard |
-
1967
- 1967-12-05 US US688214A patent/US3463116A/en not_active Expired - Lifetime
-
1968
- 1968-11-07 DE DE19681807619 patent/DE1807619A1/en active Pending
- 1968-11-08 FR FR1591392D patent/FR1591392A/fr not_active Expired
- 1968-11-08 GB GB53134/68A patent/GB1192277A/en not_active Expired
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1141185A (en) * | 1955-04-29 | 1957-08-27 | Water vehicle, usable, in particular as a bathing and water sports machine | |
US3046697A (en) * | 1960-02-05 | 1962-07-31 | Eldon Ind Inc | Toy motor boats |
US3224408A (en) * | 1964-05-21 | 1965-12-21 | George W Downs | Propulsion device |
US3324822A (en) * | 1965-10-23 | 1967-06-13 | Iii George A Carter | Motorized surfboard |
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3789792A (en) * | 1972-02-03 | 1974-02-05 | D Smith | Motorized swimming aid |
WO1981001540A1 (en) * | 1979-11-26 | 1981-06-11 | Surf Jet Corp | Power operated surfboard |
US4274357A (en) * | 1979-11-26 | 1981-06-23 | Surf-Jet Corporation | Power operated surfboard |
US5582529A (en) * | 1994-03-03 | 1996-12-10 | Montgomery; Robert E. | High performance motorized water ski |
USD424008S (en) * | 1998-09-08 | 2000-05-02 | Robert Eglington Montgomery | Motorized water ski |
US6192817B1 (en) | 1999-07-08 | 2001-02-27 | Andrzej Dec | Motorized surfboard |
US6568340B2 (en) | 2000-11-14 | 2003-05-27 | Andrzej Dec | Motorized wakeboard |
US20060270289A1 (en) * | 2005-05-26 | 2006-11-30 | Blakely John F | Surfboard deck grip with storage compartment |
US7322867B2 (en) * | 2005-05-26 | 2008-01-29 | John Ford Blakely | Surfboard deck grip with storage compartment |
US7950974B2 (en) | 2007-08-27 | 2011-05-31 | Surfango, Inc. | Weed cutter for a craft propelled by a water jet |
US20090061704A1 (en) * | 2007-08-27 | 2009-03-05 | Yuting Rui | Weed Cutter for a Craft Propelled by a Water Jet |
US20090093174A1 (en) * | 2007-10-09 | 2009-04-09 | Yuting Rui | Watercraft Propelled By a Water Jet |
US7731553B2 (en) | 2007-10-09 | 2010-06-08 | Surfango, Inc. | Watercraft propelled by a water jet |
US7597600B2 (en) | 2007-11-01 | 2009-10-06 | Surfango, Inc. | Engine for driving a watercraft propelled by a water jet |
US20090117789A1 (en) * | 2007-11-01 | 2009-05-07 | Yuting Rui | Engine for Driving a Watercraft Propelled by a Water Jet |
US20090124144A1 (en) * | 2007-11-14 | 2009-05-14 | Yuting Rui | System for Steering and Maneuvering a Watercraft Propelled by a Water Jet |
US7874883B2 (en) | 2007-11-14 | 2011-01-25 | Surfango, Inc. | System for steering and maneuvering a watercraft propelled by a water jet |
US20160114874A1 (en) * | 2013-03-05 | 2016-04-28 | Hydrojet Drive Systems, Inc. | WaterCraft Propulsion System and Method of Propelling a WaterCraft Through Water |
US9868499B2 (en) * | 2013-03-05 | 2018-01-16 | Hydrojet Drive Systems, Inc. | Watercraft propulsion system and method of propelling a watercraft through water |
US10150544B2 (en) | 2016-10-12 | 2018-12-11 | R&D Sports LLC | Personal watercraft for amplifying manual rowing or paddling with propulsion |
US10683075B2 (en) | 2016-10-12 | 2020-06-16 | R&D Sports LLC | Personal watercraft for amplifying manual rowing or paddling with propulsion |
Also Published As
Publication number | Publication date |
---|---|
DE1807619A1 (en) | 1969-06-26 |
GB1192277A (en) | 1970-05-20 |
FR1591392A (en) | 1970-04-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: PFAFF, JOHN B. ST. PAUL, MN. Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:DAWSON, EDWARD S.;REEL/FRAME:004096/0959 Effective date: 19790918 Owner name: SIGNORELLI, RONALD A., ST. PAUL, MN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:DAWSON, EDWARD S.;REEL/FRAME:004096/0959 Effective date: 19790918 Owner name: SURF-JET CORPORATION, 715 RAYMOND AVENUE, ST. PAUL Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:SIGNORELLI, RONALD A.;PFAFF, JOHN B.;REEL/FRAME:004097/0082;SIGNING DATES FROM 19810218 TO 19810304 |
|
AS | Assignment |
Owner name: PROGRESSIVE POWER CORPORATION, 126 SHIRLAND AVE., Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:SURF-JET CORPORATION, A CORP. OF MN;REEL/FRAME:004704/0746 Effective date: 19870331 Owner name: PROGRESSIVE POWER CORPORATION, A CORP. OF ILL.,ILL Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SURF-JET CORPORATION, A CORP. OF MN;REEL/FRAME:004704/0746 Effective date: 19870331 |
|
AS | Assignment |
Owner name: PROGRESSIVE POWER CORPORATION, WISCONSIN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:PROGRESSIVE POWER CORPORATION, A CORP. OF IL;REEL/FRAME:005216/0184 Effective date: 19890816 |