WO1996007305A2

WO1996007305A2 - Drive fin device

Info

Publication number: WO1996007305A2
Application number: PCT/SE1995/001244
Authority: WO
Inventors: Dragoljub Perunicic
Original assignee: Dragoljub Perunicic
Priority date: 1995-10-24
Filing date: 1995-10-24
Publication date: 1996-03-14
Also published as: WO1997015491A1; AU3715495A; AU7101596A; WO1996007305A3

Abstract

A drive fin device (1) having a wind drive turbine (3) comprising a swivel lever bar (4) which is rotatable attached to an upward shaft (5) and a supporting frame (12) which supports the shaft (5) to a boat (2) and fins (7, 8) each fixed with one edge downward on diametrically opposed side of the horizontally disposed lever bar (4) 90 degree apart; having a coupling set (13) comprising a pin (15) which is fixed to the shaft (5) and an angle (14) which middle is fixed to the lever bar (4) blocking position of self-adjustable fins (7, 8) against wind; having a cylinder (23) which tube (28) is rotatable and movable attached along the shaft (5) and fixed to a steering handle (31); having water turbine fins (18, 19, 20) fixed to the shaft (5) and to circle (21) as a bottom (22) rotatable disposed inside the cylinder (23); wherein wind force pushing fins (7, 8) rotating the shaft (5) is well-balanced with pushing force of fins (18, 19, 20) of the water turbine (24) directing water out from the cylinder (23).

Description

Drive Fin Device D e s c r i p t i o n

Technical Field The invention relates to a fin and more particularly to the wind and wave drive fin

for moving a boat or a rotor of a generator and to leg-forced drive fin for swimming.

Beckgraund Art

In the prior art, sails of a saliboat which are during storm pushed by strong wind

increasing instability of the boat with a risk of overturning. There is need for an

inexpensive device which operates and steers the boat during storm without

increasing instability wherein the boat is not pushed through a mast and sails on it.

In the prior art, a wind drive turbine for the generator comprising a direction fin for

directing fin-blades toward wind rotating on a swivel pole and a bearings which

supports an axle of the fin-blades. During storm wind force which pushing fin-

blades can damage the bearings due to strong pressure on it. There is need for an

inexpensive device which fins are self -adjustable to any direction of wind without

the direction fin and the swivel pole and having no pressure on the bearing.

In prior art, a high power wind drive turbine for the generator is disposed at a very

high and a very srong pole as fin blades are verticaly disposed. There is need for a

simple device having horizontaly disposed lever with fins thereon which is posted

on a short rotating pole or shaft suitable for installation on existing bindings or hills.

In the prior art, a wind drive turbine for a boat is disposed on a shaft which is

incorporated in the boat at an incline angle. Fin-blades of such turbine which are

not disposed on a swivel pole can not be exposed all the time toward wind

whithout problems with steering and with stability of the boat during storm. There is need for an inexpensive device having efficient steering and fins which are self-adjustable to any direction of wind and all the time transmiting rotational

force through the shaft to a water turbine without increasing instability during storm

and without any direct pushing the boat by wind through the shaft and the turbine.

In the prior art, fins which are attached to feet use force of legs for moving a body.

When legs and feet oscilate fins pushing water transmiting pushing force from each foot to the body through each leg. This movement and transmission cause

fatigue in legs and feet. There is need for an inexpensive device which supports

the body besides legs distributing the transmission force thereon reducing fatigue.

Desclosure of Invention

The present invention for movement a boat as an embodiment of the invention is

characterized in that fins of a wind or wave drive turbine which are fixed with one

edge along each side of a swivel lever 90 degree apart rotating an upward shaft

and fins of a water turbine thereon rotatable disposed inside a movable cylinder.

The present invention for movement of a boat or a rotor of the generator as another

embodiment of the invention is characterized in that each fin of a wind or wave

drive turbine which hang on a fin tube is movable and rotatable disposed along one

side of a iever bar and in that balance-weights are movable disposed along each

side of blocking bar and in that each fin is connected with one of rope to one of balance-weight disposed on diametrically opposed side and in that when rotational

speed is increased each balance-weight is moved by centrifugal force adjusting

position of each fin to new momentum of force which well-balancing rotation force.

The present invention for moving of a boat as another embodiment of the invention

is characterized in that the fin of each rotatable and movable Iever bar of a wind turbine with a balance-weight rotates an upward shaft and direction fins of a water

turbine rotatable disposed on upward arms of a Cardan shaft.

The above mentioned embodiments are characterized in that fins of each wind or

wave turbine are self-adjustable to any direction of wind or wave within range limited

by a blocking set or angles or pins with maximum or minimum resistance altemately

depending on position against direction of wind or wave and in that each fin of one

turbine is horizontally disposed on diametrically opposed side of the Iever bar

which is attached to the vertically rotating shaft with fins of the water turbine

thereon or the rotor of the generator and in that fins converting wind or water flow

force into rotation force which moves the rotor of the generator or the water turbine.

The present invention for moving the boat as another embodiment of the invention

is characterized in that a wave drive fin which is attached to the boat through a

Iever bar oscillates altemately up and down when wave force affects on forward

and backward sides of the boat moving it alternately up and down and in that the

Iever bar with the fin thereon acts on water with smaller pushing force on longer

way converting wave force into pushing force which moves the boat and in that the

fin is self-adjustable to water resistance within limits determinated by a blocking

angle and in that the momentum of force is controled by the mobile Iever bar.

The present invention for swimming as another embodiment of the invention is

characterized in that each fin which is attached to one of Iever bar disposed

inside a Iever frame tube oscilates when leg moves a supporting Iever bar attached

with one end to foot and with another end to the middle of said Iever frame tube and

in that each Iever frame tube which is attached to a frame rod supporting a seat

transmits pushing force of each fin through the seat to the body besides legs. The present invention for swimming as another embodiment of the invention is characterized in that fins are rotatable disposed in pair each for one foot and in

that fins are expanding by water resistance within limits determinated by blocking

pins when one of leg is stretched increasing surface and pushing force.

The present invention for swimming as another embodiment of the invention is

characterized in that the device operates based on a yoke and alternative change

of distances between feet on one side and one hand and one foot on another side

through ropes which are unwinding from one spool and winding on another spool

simultaneously rotating a shaft and a water turbine thereon moving the body.

The present invention for swimming as another embodiment of the invention is

characterizied in that fins of a water turbine which are rotatable disposed in a

cylinder are radialy spreaded between periferial and central disposed rods of a

squirrel-cage fixed to a shaft and in that elastic fins which are self-adjustable due

to elasticity to any direction of rotation and to water resistance pushing water out. The present invention for swimming as another embodiment of the invention is

characterized in that an upward shaft rotates a horizontal Iever with fins thereon

and in that a position of fins which are self-adjustable to any direction of rotation

and to water resistance is determinated by blocking angles disposing fins at one

of incline angle for pushing water in one direction and moving the body in another.

Brief Descriptions of the Drawings

FigJ and FigJa are perspective views of a drive fin device as an embodiment of

the invention showing a wind drive fin device and a wave drive fin device having

one of positions of fins which are pushed by wind or wave in direction of arrows;

Fig.2 is a perspective view of a drive fin device as another embodiment of the invention showing one of positions of fins which are pushed by wind or wave;

Fig.3 is a perspective view of a drive fine device as another embodiment of the

invention showing one of positions of fins which are pushed by wind;

Fig.4 is a perspective view of a drive fin device as another embodiment of the

invention showing one of position of a fin and a boat which is moved by wave;

Fig.5 is perspective view of a drive fin device as another embodiment of the

invention showing one of position of fin and a boat which are moved by wave;

Fig.6 is a perspective and partly cross-section view of a drive fin device for

swimming as another embodiment of the invention;

Fig.7 is a perspective and partly cross-section view of a drive fin device for

swimming as another embodiment of the invention;

Fig.8 is a perspective view of a drive fin device for swimming as another

embodiment of the invention showing one pair of fin for one foot;

Fig.9 is a prospective and partly cross-section view of a drive fin device

having elastic fins for swimming as another embodiment of the ivention;

FigJO is a perspective view of a drive fin device having rotatable fins for swimming as another embodiment of the invention.

Best Modes for Carrying Out the Invention

A drive fin device 1 for a boat 2 as shown in FigJ and FigJa as an embodiment of

the invention having a wind or wave drive turbine 3 comprising a horizontal Iever

bar 4 which is fixed through a bearings 6 to a upward shaft 5 and two fins 7;8 each

fixed with one edge on diametrically opposed side of the Iever bar 4 90 degree

apart; having the shaft 5 which is attached through bearings 9;10 to a tube 11 of a

supporting frame 12 of the boat 2; having a blocking set 13 comprisnig an angle 14 which middle is fixed to the Iever bar 4 while arms 16; 1790 degree apart interact

with a pin 15 which is fixed to the shaft 5 limiting movement of fins 7;8; having a cylinder 23 comprising a top opening 25 and a side opening 26 and a bottom

opening 27; having a water turbine 24 which fins 18;19;20 are radialy fixed with one

of edge to the shaft 5 and to a circle 21 forming a bottom 22 of cylinder 23; having a

tube 28 which is movable disposed along the shaft 5 through bearings 29;30 and

fixed to the center of the cylinder 23 and to a steering handle 31 ; having a holder of

bearings 32 which is fixed to the shaft 5 holding the bearings 6 of the Iever bar 4.

A drive fin device 33 as shown in Fig. 2 as another embodiment of the invention

having a wind drive turbine 34 comprising a horizontal Iever bar 35 which is fixed to

an upward shaft 36 and swivel fins 37;38 each fixed with one edge along fin tube

39;40 which is rotatable and movable disposed along the Iever bar 35; having the

shaft 36 which is attached through bearings 41 ;42 to a frame tube 43 of a

supporting frame 44 and is fixed to a rotor 59 of the generator 60 ; having blocking

sets 45;46 each comprising a pin 47;48 which is fixed to a fin tube 39;40 at an

angle of 90 degree from the fin 37;38 and a blocking bar 49 which fixed to the shaft

36 is parallely disposed with the Iever bar 35 with a gap 50 therebetween limiting

movement of fins 37;38; having balance sets 51;52 each comprising a balance-

weight 53;54 which is movable attached along the blocking bar 49 and a rope 55;56

each connects one balance-weight 53;54 to the fin 37;38 disposed on the opposite

side and a spring 57;58 which connects the fin tube 37;38 to the end of Iever bar 35.

A drive fin device 61 for a boat 2 as shown in Fig. 3 as another embodiment of the

invention having a wind drive turbine 62 comprising two horizontally and parallely

disposed lever bars 63;64, each of which rotatable and movable disposed in a bearings 65;66 of an upward shaft 67 and two fins 68;69 each fixed with one edge

along the lever bar 63;64 and two balance-weights 70;71 each fixed to the end of

the lever bar 63;64 on diametrically opposed side from fin 68;69 and two blocking

angles 72;73 each fixed with the middle to the Iever bar 63;64 next to the balance-

weight 70;71 and two springs 74;75 each connects a holder of bearings 76 with

each balance-weight 70;71 ; having the shaft 67 consists of rectangular bar

comprising the holder of bearings 76 which holds bearings 65;66 of Iever bars

63;64 and a frame tube 77 which holds bearings 78;79 of a supporting frame 80 of

the boat 2; wherein each blocking angle 72;73 having two arms 81 ;82;83;84 90

degree apart each long enough to reach the opposite Iever bar 63;64 limiting

rotation of the Iever bar 63;64 and the fin 68;69 thereon; having a water turbine

85 comprising a Caradan shaft 86 which central axle 87 consists of rectangular

tube is hang on the shaft 67 and horizontaly disposed swivel fin supports 88;89

each rotatable attached at the middle through a hole 90;91 to the upward arm 92;93

and fin axles 94;95 each horizontaly and rotatabe disposed in a hole 96;97 of the fin support 88;89 and fins 98;99 each fixed with one edge along the fin axle 94;95

and supporting tubes 100J01 each disposed on the upward arm 92;93 supporting the fin support 88;89 having a steering handle 102 which is fixed to a holder of

bearings 104 holding a bearings 103 rotatable attached to the central arm 87;having

a spool axle 105 fixed downward to a steering handle 102 and a rotatable spool 106

thereon; having a rope 107 which over passing the spool 106 connecting ends of

each fin support 88;89 disposed on the diametrically opposed side from each fin

98;99 keeping fins 98;99 always on the same side of upwards arms 92;93 which

is on diametrically opposed side from the side of the spool 106. A drive fin device 108 for a boat 2 as shown in Fig 4 as another embodiment of the

invention having a supporting frame 109 comprising a horisontaly disposed frame rectangular tube 110 which is fixed to an upward frame rod 111 and a frame holder

112 which holding the rotatable frame rod 111 is fixed to a fence 113 of backward

of the boat 2; having a iever rectancular bar 114 which is movable disposed within

said frame tube 110; having an upward fin rod 115 which is fixed to the Iever bar

114 with one side and to another side to the middle of a fin axle 116, wherein the fin

axle 116 is parallely disposed to the short side of the boat 2; having a swivel fin 117

which one edge is fixed along tubes 118;119 rotatable disposed on both side of the

fin axle 116; having a blocking angle 120 which middle is fixed to the fin rod 115

while arms 121 ; 12290 degree apart are disposed on the opposite side of the boat.

A drive fin device 123 for a boat 2 as shown in Fig. 5 as another embodiment of

the invention having a horisontal supporting frame tubel 24 fixed to backward of

the boat 2; having a Iever bar 125 which is movable disposed within the supporting

frame tube 124; having a downward disposed incline fin rod 126 which is rotatable attached through a bearings 127 of a bearings holder 128 to the Iever bar 125 at an

angle of 45 degree; having a blocking angle 129 which middle is fixed to the fin

rod 126 and which arms 131 ; 132 90 degree apart interacts with the Iever bar 125

limiting rotation of the fin rod 126; having a fin 130 which is fixed with one edge

along the fin rod 126 on the diametrically opposed side from the arm 131.

A drive fin device 133 for swimming as shown in Fig. 6 as another embodiment of

the invention comprising a supporting frame rod 134 which supports a seat 135

through a seat bar 136 and two Iever frame tubes 137;138 having rectangular

shape rotatable attached to the supporting frame rod 134 and two supporting Iever bars 139J40 each rotatable attached at the middle of the Iever frame tube 137J38

and to a foot-holder 141 ;142 and two fin bars 143;144 having rectangular shape

each movable disposed within the Iever frame tube 137J38 and fixed at the middle

of each fin axle 149; 150 and two swivel fins 145; 146 each attached through a pair of fin tube 147;148 to the fin axle 149;150 and two frame axles 151 ;152 each

connects the frame tube 137;138 with the supporting Iever bar 139;140 and two blocking angles 153; 154 each fixed at the middle to the end of the fin bar 143; 144

each having a pair of arm 155; 156 90 degree apart limiting movement of the fin

45; 146 and two springs 157; 158 each inside the frame tube 137; 138 connecting

the Iever frame tube 137;138 with the fin bar 143 and ropes 159;160 each for

pulling the Iever bar 143; 144 and spools 161 ; 162 each for holding the rope 159; 160.

A drive fin device 163 for swimming as shown in Fig.7 as another embodiment of

the invention comprising a suporting frame rod 164 supporting a seat 165 and two

Iever frame tubes 166; 167 each rotatable attached to the supporting frame rod 164

and two supporting Iever bars 168;169 each rotatable attached at the middle of the

Iever frame tube 166;167 and to a foot holder 170;171 and two fin bars 172;173

each movable disposed within the Iever frame tube 166; 167 and two fin 174; 175

each fixed with one edge along the fin bar 172; 173 and frame axles 188; 189 each

connects the Iever frame tube 166; 167 to the supporting Iever bar 168; 169 and

blocking sets 176;177 each consists of a pin 178;179 fixed to the fin bar 172;173

and tube splits 180; 181 each cut on the Iever frame tube 166; 167 interacting with

the pin 178;179 limiting movement of the fin bar 172; 173 and springs 182; 183 each

conects ends of the Iever frame tube 166;167 and the fin bar 172;173 and ropes

184;185 of fin bars 172;173 and spools 186;187 holding ropes184;185. A drive fin device 190 for swimming as shown in Fig. 8 as another embodiment of

the invention consists of two sets of leg force drive fin 191 ; 192 each set comprising

a supporting pole 193;194 supporting a foot holder 195;196 and horizontal fin axles

197;198;199;200 each for a pair of rotatable attached tube 205;206;207;208 having

a fin 201 ;202;203;204 and blocking pins 209;210;211;212 thereon each of which

5 on diametrically opposed side limiting movement of the fin 201 ;202;203;204.

A drive fin device 213 for swimming as shown in Fig.9 as another embodiment of

the invention having a cylinder 214 with a central opening 215 and a side opening

216; having a shaft 217 which is supported by the cylinder 214; having a water

0 turbine 218 comprising a squirrel-cage 219 which is fixed through the rotational

center to a shaft 217 and elastic fins 221 ,222,223 which are radialy spreaded between central and periferial disposed bars 223;224;225 of the squirrel-cage 219;

having a supporting frame 226 which supporting the cylinder 214 and a foot-holder

227 for one foot; having a foot holder 228 for another foot; having a handle 229 for a

15 hand; having spools 230; 231 fixed to the shaft 217 and wound with ropes 232;233.

A drive fin device 234 for swimming as shown in FigJO as another embodiment of

the invention having a supporting frame 235 which supports a shaft 236 and a foot

holder 237; having a water turbine 238 comprising a Iever bar 239 which is attached

to the upward shaft 236 and fins 240;241 each fixed with one edge to a fin tube

20242;243 rotatable disposed on the Iever bar 238; having a blockling angles 244;245

each fixed at the middle to the Iever bar 239 consists of arms 246;247,248;249 90

degree apart limiting position of the fin 240;241 at one of incline angle; having

spools 250;251 fixed to the shaft 236 and wound with ropes 252;253 connecting a

foot holder 254 of another foot with a handle 255 through a direction spool 256.

Claims

Claims 1. A drive fin device for a boat comprising a wind or wave drive turbine, a shaft, a

supporting frame, a blocking set, a cylinder and a water turbine; wherein the wind

or wave drive turbine comprising one or more horizontaly disposed Iever bar which

is rotatable attached to the end of the verticlay rotating shaft and fins each fixed

with one edge on diametrically opposed side of the lever bar 90 degree apart;

wherein the shaft is rotatable attached to the supporting frame of the boat; wherein

the blocking set comprising a angle which middle is fixed to the Iever bar next to the

shaft and a pin which is fixed to the shaft below the Iever bar limiting movement of the angle and the Iever bar with the fins thereon, wherein each arm of the angle is

parallel to one of fin; wherein the cylinder having a small central opening on the top

side and a side opening on cylindrical side and a large bottom opening, wherein the

cylinder is fixed through the rotational center to a tube, wherein the tube is rotatable

and movable attached along the shaft, wherein a steering handle is fixed to the

tube; wherein the water turbine comprising radialy and rotatable disposed fins

within the cylinder each of which fixed along the shaft with one edge and to a circle

with another edge, wherein the circle which is horizontaly and centraly fixed to the

end of the shaft forms the bottom of the cylinder when the turbine operates,

characterized in that the lever bar rotates when one of fin which is pushed by wind

or wave force and blocked by the blocking set is fully exposed to such force while

another fin is not workable exposed to any force and in that each fin altemately

changing function depending of wind or wave direction and in that the water turbine

operates when the cylinder which is movable by the steering handle along the shaft

covers fins disposed on the circle and in that the steering handle controls direction and force of movement of the boat and in that wind or wave force is well-balanced

with pushing force of the water turbine pushing water out from the cylinder.

2. A drive fin device for a generator of electricity or for a water pump or for a water turbine of a boat comprising a wind or wave drive turbine, a supporting frame, a

shaft, blocking sets and balance sets; wherein the wind or wave turbine comprising

a horizontal Iever bar which middle is fixed to the upward shaft and swivel fins each

hang down on diametrically opposed side of the Iever bar; wherein one edge of

each fin is fixed to a tube which is rotatable and movable disposed along the lever

ban wherein the shaft is attached to the supporting frame and to the water turbine

or to a rotor of the generator or to the water pump; wherein each blocking set

comprising a pin which is fixed to the fin tube at an angle of 90 degree from the fin

and a blocking bar which is fixed to the shaft and disposed parallel to the lever bar

having a gap therebetween; wherein each balance set comprising one of balance-

weight which is movable attached along the blockling bar and one of fin which is

disposed on diametrically oposed side and a rope which connects said balance-

weight to said fin and a spring which connects one of fin tube to one of end side of the Iever bar; characterized in that the Iever bar rotates when one of fin which is

pushed by wind or wave force and blocked by the blocking set is fully exposed to

such force while another fin which is not blocked is not workable exposed and in

that each fin altemately changing function depending on wind or wave direction and

in that centrifugal force affects balance-weights moving it along the blocking bar adjusting positon to rotational force simultaneously pulling fins changing the

momentum of Iever force and in that such adjustment to wind or wave velocity well-

balancing rotational force and in that wind or wave force is well-balanced with pushing force of the water turbine or with contra emf generated in the generator.

3. A drive fin device for a boat comprising a wind drive turbine, a shaft, a supporting

frame, blocking angles, balance weights and a water turbine; wherein the wind

turbine comprising two horizontal lever bars each of which rotatable attached to the

5 top of the upward shaft and two fins each disposed on diametrically opposed side

of each Iever bar; wherein one edge of each fin is fixed along periferial side of the

Iever bar while each balance-weight is fixed on another side; wherein the shaft

consists of a rectangular bar is rotatable attached to the supporting frame of the

boat; wherein each blocking angle which middle is fixed to the Iever bar having arms

1090 degree apart long enough to reach another Iever bar limiting movement of fins;

wherein the water turbine comprising a Caradan shaft, two fins and a steering

handle; wherein the Cardan shaft having two upwards arms and a central arm

consists of a rectangular tube which hangs on the shaft; wherein the steering

handle is rotatable attached to said central arm through a bearings; wherein each

15 upward arm having a horizontal fin support which middle is rotatable attached to

the upward arm; wherein each fin is partly fixed with one edge along a fin axle

which is rotatable disposed in the fin support; wherein a spool axle which is fixed to

the steering handle having a rotatable spool thereon; wherein a rope which over

passing the spool connecting ends of fin supports directing fins always on the

20 same side from upward arms which is opposite from the side of the spool; wherein the movement of fins which operate just below the water surface are

limited by said upward arms; characterized in that Iever bars rotates when the fin

which is pushed by wind force and blocked by the blocking angle is fully exposed to

wind force while another fin of another Iever bar which is not blocked is not workable exposed to wind and in that the fin of each Iever bar altemately changing function

depending on direction of wind and in that centrifugal force affects balance-weights

moving Iever bars adjusting position of fins to new momentum of force and well- balancing force of rotation and in that the rope over the spool always directing fins

05 of the water turbine on the same side from upwards arms and on the side which is

opposite from the position of the spool of the steering handle and in that the fin

which is coming from side of the spool pushing water at an incline angle moving the

boat and in that wind force is well-balanced with pushing force of the water turbine

and in that the steering handle controls force and direction of movement of the boat.

104. A drive fin device for a boat comprising a wave drive swivel fin, a supporting

frame tube, a Iever bar and a blocking angle; wherein the supporting frame tube is horisontaly and rotatable attached to a backward or/and forward fence of the boat;

wherein the Iever bar having rectangular shape is movable disposed within the

supporting frame tube having rectangular shape; wherein the end of the Iever bar is

15 fixed to the end of a downward fin rod; wherein the fin rod is fixed to the middle of a

fin axle which is disposed parallel to the short side of the boat; wherein the fin is

partly fixed with one edge along fin tubes which are rotatable disposed on each

side of the fin axle; wherein the blocking angle which middle is fixed to the fin rod

having an opening between arms disposed on the side which is opposite from

20 direction of movement; wherein movement of the fin is limited by the blocking

angle; characterized in that the Iever bar moves altemately up and down when the

boat swinging on wave and in that the oscilating movement of the boat and the

Iever bar moves the fin thereon within the limit determinated by the blocking set and

in that the fin altemately changing angle adjusting position to direction of movement and to water resistance pushing water at an inclined angle in the opposite direction from the direction of movement of the boat converting wave force into movement

and in that the momentum of force is controled by the mobile Iever bar and in that

wave force is well-balanced with pushing force of the fin.

055. A drive fin device for a boat comprising a wave drive fin, a Iever bar, a supporting

frame tube and a blocking angle; wherein the supporting frame tube is horisontaly

fixed to a backward or/and forward fence along the middle side of the boat; wherein

the Iever bar having rectangular shape is movable disposed within the supporting

frame tube having rectangular shape; wherein a fin rod which is rotatable attached

10 to the end of the lever bar is disposed downward at an incline angle of 45 degree

therebetween; wherein the fin is fixed with one edge along the fin rod; wherein the

blocking angle which middle is fixed to the fin rod having arms 90 degree apart;

wherein one of arm is disposed in the same line but on the diametrically opposed

side of the fin rod; wherein said arms are long enough to reach the Iever bar which

15 limiting movement of the fin when operates exposing surface of the fin at the incline

angle on the side which is opposite from side of movement of the boat;

characterized in that the Iever bar moves alternately up and down when the boat

swinging on wave and in that movement of the fin which is disposed on the incline

fin rod is limited by the blocking angle and in that the fin altemately changing angle

20 adjusting position to direction of movement and to water resistance pushing water

at an inclined angle in the opposite direction from the direction of movement of the

boat when the lever bar moves from up to down position and in that movement of

the fin converting wave force into movement of the boat and in that the momentum

of force is controled by the mobile Iever bar and in that wave force is well-balanced with pushing force of the fin which moves water.

6. A drive fin device for swimming comprising leg-force drive fins and two sets of

Iever, each of which for one foot and a supporting frame rod supporting each Iever

set and a seat for a body; wherein each set of Iever comprising a Iever frame tube,

5 a fin bar and a supporting lever bar; wherein each supporting Iever bar which one

end is movable attached to the middle of the Iever frame tube having a foot holder

on another end side; wherein each fin bar having rectangular shape is movable

disposed with one side within the Iever frame tube having rectanglular shape while

another side having the fin; wherein each Iever frame tube is movable attached to

0 the supporting frame rod supporting the seat; wherein each fin is disposed in the

same direction with the fin bar having surface toward the body; wherein the end of

each fin bar having an elastic fin which is fixed with one edge thereon or a swivel

fin attached thereon through a fin axle which moves within the range determinated

by a blocking angle; wherein the middle of each fin axle and each blockling angle is

5 fixed to the end of fin bar; wherein each fin having surface fully exposed toward

direction of movement; wherein ends of the Iever frame tube and the fin bar are

connected with a spring which keeping the Iever bar partly extended; wherein the

end of fin bar is connected by a rope which is used for pulling the fin bar inside the

Iever frame tube; characterized in that when one of leg bends or stretchs and D moves the supporting Iever bar simultaneously moving the Iever frame tube with the

fin bar therein having fins thereon and in that the elastic or limited rotatable fin

altemately changing angle adjusting position to the direction of movement and to

water resistance pushing water at an incline angle in opposite direction from

movement of the body and in that the transmission of force is distributed between each foot disposed in foot holder and the body supported by the seat and in that

the momentum of force is controled by the mobile Iever bar.

7. A drive fin device for swimming comprising leg-force drive fins, two sets of Iever, and blocking sets, each of which for one foot and a supporting frame rod supporting

each iever set and a seat for a body; wherein each set of Iever comprising a Iever

frame tube, a fin bar and a supporting Iever bar; wherein each supporting lever bar

which one end is movable attached to the middle of the Iever frame tube having a

foot holder on another end side; wherein each fin bar is rotatable disposed within the

Iever frame tube while another side having a fin; wherein each fin is fixed with one

edge along the fin bar; wherein blocking sets each of which comprising a pin which

is fixed to the fin bar and a split of tube which is cut in the fin tube limiting

movement of each fin and directing the surface of each fin toward the body when

operates; wherein springs each of which is disposed inside the Iever frame tube

connecting the end of the Iever frame tube to end of the fin bar keeping the Iever

bar partly extended from the Iever frame tube; wherein ropes each of which is used

to pull the fin bar inside the Iever frame tube; characterized in that when one of leg bends or stretchs and moves the supporting Iever bar simultaneoulsy moving the

Iever frame tube with the fin bar therein and in that the limited rotatable fin bar with

fin thereon altemately changing angle adjusting position to the direction of movement and to water resistance when moving toward the body pushing water at

an inclined angle in the opposite direction from the movement of the body and in that transmission of pushing force is distributed between each foot in the foot holder

and the body supported by the seat and in that the momentum of force is controled

by the mobile Iever bar.

8. A drive fin device for swimming consists of two sets of leg force-drive fin each

for one foot each comprising a pair of swivel fin, supporting poles, blocking pins, and foot holders; wherein each supporting pole supports a foot-holder disposed

on one end and a horisontaly disposed fin axles on another; wherein each fin axle

having a swivel fin each partly fixed to a tube rotatable attached on said fin axle;

wherein each blocking pin is fixed to each fin tube in the same line on diametrically

opposed side of each fin limiting movement of fins; wherein each pair of fin having

an opening disposed toward each foot; characterized in that when one of leg

stretchs and moves the pair of fin thereon expanding fins pushing water on one

side and the body on another side and in that fins are blocked by the blocking pins

during stretching and in that fins are adjustable to direction of movement and to

water resistance.

9. A drive fin device for swimming comprising a supporting frame, a water turbine, a

cylinder, a shaft, foot holders, a handle and two spools; wherein the supporting

frame supporting the cylinder on one side and the foot-holder on another side;

wherin the shaft which is rotatable supported by the cylinder having the water

turbine and spools thereon; wherein the water turbine which is rotatable disposed

within the cylinder comprising a squirrel-cage which is fixed through the rotational

center to the shaft and elastic fins which are radialy spreaded between central and

periferial disposed bars of the squirrel-cage; wherein the cylinder having a small

centraiy disposed opening on the flat side and a side opening disposed on the

cylindrical side toward the foot; wherein each spool is wound with one rope each

one in different direction, wherein one of rope is attacted with ends to the spool

and to the foot holder of another foot, while another rope is attached with ends to the spool and to the handle; characterized in that the drive fin device for swimming

operates based on alternating changes the distance between feet on one side and

one of hand and one of foot on another side and in that a yoke is achieved through

ropes each of which connecting one of spool disposed on one of foot to another

foot and one hand respectively and in that ropes following increasing distance

between feet on one side and decreasing distance between one of hand and one of

foot on another side and vice versa simultaneously winding the rope on one spool

and unwinding the rope from another spool and vica versa alternately rotating

spools disposed on the shaft and in that the changing of distance converts force of

legs and the hand into rotational force which drives the water turbine and in that

elastic fins of the water turbine which are extended by water resistance are self-

adjustable to any direction of rotation pushing water out from the oppening on

cylindrical side in the opposite direction from the movement of the body.

10. A drive fin device for swimming comprising a water turbine, a supporting frame,

a shaft, foot holders, a handle, two spools and a blocking angle; wherein the

supporting frame supporting the shaft and the foot holder holding only one foot;

wherein the water turbine comprising a horizontal Iever bar which is attached to the

upward shaft and fins thereon each of which partly fixed with one edge to a tube

rotatabe! disposed on diametrically opposed side of the Iever bar; wherein

blocking angles each of which fixed at the middle to the Iever bar next to the fin

tube having openings between arms 90 degree apart disposed downwards

determinating movement of each fin at one of incline angle; wherein each spool

which is fixed to the shaft is wound with one rope each in different direction;

wherein one of rope is attached with ends to one of spool and to the foot-holder of anotherfoot while another rope is attached with ends to another spool and to the

handle; characterized in that the drive fin device for swimming operates based on

alternating changes of distance between feet on one side and one of hand and one

of foot on another side and in that a yoke is achieved through ropes each of which

connecting to one of spool disposed on one foot to one hand and to another foot

respectively and in that ropes follow increasing distance between feet on one side

and decreasing distance between one of hand and one of foot on another side and

vice versa simultaneously winding the rope on one spool and unwinding the rope

from another spool and vice versa and in that pulling and unwinding one of rope

from one of spool rotates the shaft converting force of legs and the hand into rotational force which drives the water turbine and in that when the shaft rotates

swivel fins disposed on the Iever bar revolves adjusting their position to the

direction of movement and the water resistance within limits determinated by the

blocking angle determinating position of each fin at one of incline angle pushing

water in the opposite direction from the movement of the body and in that leg force

is well-balanced with pushing force of the water turbine which moves water moving

the body and in that the transmission of pushing force is distributed between feet or

between one foot and one leg alternately.