SU925354A1 - Fin - Google Patents
Fin Download PDFInfo
- Publication number
- SU925354A1 SU925354A1 SU792838886A SU2838886A SU925354A1 SU 925354 A1 SU925354 A1 SU 925354A1 SU 792838886 A SU792838886 A SU 792838886A SU 2838886 A SU2838886 A SU 2838886A SU 925354 A1 SU925354 A1 SU 925354A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- blade
- bend
- free end
- length
- stiffness
- Prior art date
Links
- 210000000006 pectoral fin Anatomy 0.000 claims description 5
- 239000013013 elastic material Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000005452 bending Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 claims 1
- 230000001788 irregular Effects 0.000 claims 1
- 238000003756 stirring Methods 0.000 claims 1
- 230000035900 sweating Effects 0.000 claims 1
- 230000009182 swimming Effects 0.000 description 2
- 230000002542 deteriorative effect Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B31/00—Swimming aids
- A63B31/08—Swim fins, flippers or other swimming aids held by, or attachable to, the hands, arms, feet or legs
- A63B31/10—Swim fins, flippers or other swimming aids held by, or attachable to, the hands, arms, feet or legs held by, or attachable to, the hands or feet
- A63B31/11—Swim fins, flippers or other swimming aids held by, or attachable to, the hands, arms, feet or legs held by, or attachable to, the hands or feet attachable only to the feet
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Toys (AREA)
Description
Изобретение относитс к плавательным принадлежност м, а более конкретно к ластам дл плавани .The invention relates to swimming accessories, and more specifically to flippers for swimming.
Известен ласт, содержащий галошу, шарнирно соединенную с ней лопасть неравномерной жесткости по длине и ограничитель поворота лопасти, закрепленный на галоше 1.Known flippers, containing a galosh, a blade pivotally connected to it, of uneven stiffness along the length and a blade rotation stop mounted on a galosh 1.
Недостатком известных ласт вл етс . то, что свободный конец лопасти тормозит отталкиваемый назад поток воды, отклЬн ёт его от наиболее выгодного горизонтального направлени , ухудша тем самым динамические свойства ласт в моменты переключени лопастей и снижа скорость перемещени .A disadvantage of the known flippers is. the fact that the free end of the blade impedes the flow of water repelled backward, separates it from the most advantageous horizontal direction, thereby deteriorating the dynamic properties of the fins at the moments of switching the blades and reducing the speed of movement.
Целью изобретени вл етс повышение скорости перемещени .The aim of the invention is to increase the speed of movement.
Цель достигаетс тем, что ласт содержит галощу, щарнирно соединенную с ней лопасть неравномерной жесткости по длине и ограничитель поворота лоп1асти, закрепленный на галоше, причем ласт имеет дополнительный ограничитель поворота лопасти и гибкие т ги, св зывающие срободный конец лоттасти с галошей и расположенные с обеих сторон лопасти, прн этом ограничнтелн поворота лопасти установлены симметрично один другому, а лопасть изогнута , причем жесткость лопасти увеличиваетс к свободному концу.The goal is achieved by the fact that the fin contains a canopy, a blade of uneven stiffness along the length and a blade stop attached to the galoshes, hingedly connected to it, and the fin has an additional blade stop and flexible rods connecting the end of the lotto with galoshes and located on both sides. The sides of the blade, which are limited to turning the blade, are installed symmetrically one to another, and the blade is curved, with the blade stiffness increasing towards the free end.
При этом форма изгиба лопасти определ етс формулой 5The shape of the bend of the blade is determined by the formula 5
/( + С,/ (+ C,
где f(x) - функци кривой изгиба;where f (x) is a function of the bend curve;
X - длина лопасти;X is the length of the blade;
10С - посто нна , завис ща от жесткости лопасти, длины гибких св зей и угла поворота лопасти в шарнирном соединени . При этом лист может иметь ребра жест15 кости, установленные на свободном конце лопасти по ее боковым сторонам.10C is constant, depending on the stiffness of the blade, the length of the flexible links and the angle of rotation of the blade in the hinge joint. In this case, the sheet may have stiffened bone ribs mounted on the free end of the blade along its sides.
Кроме того, шарнирное соединение лопасти с галошей может быть выполнено в виде полосы из эластичного материала, од20 на сторона которой закреплена на галоше, а друга - на лопасти.In addition, the hinge connection of the blade with the galoshes can be made in the form of a strip of elastic material, one side of which is fixed on the overshoot, and the other on the blade.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU792838886A SU925354A1 (en) | 1979-11-01 | 1979-11-01 | Fin |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU792838886A SU925354A1 (en) | 1979-11-01 | 1979-11-01 | Fin |
Publications (1)
Publication Number | Publication Date |
---|---|
SU925354A1 true SU925354A1 (en) | 1982-05-07 |
Family
ID=20858906
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU792838886A SU925354A1 (en) | 1979-11-01 | 1979-11-01 | Fin |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU925354A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6881113B2 (en) * | 2002-12-06 | 2005-04-19 | R. Evan Smith | Propulsion device for use with swimmers |
-
1979
- 1979-11-01 SU SU792838886A patent/SU925354A1/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6881113B2 (en) * | 2002-12-06 | 2005-04-19 | R. Evan Smith | Propulsion device for use with swimmers |
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