EP0161198A1 - Drehbare, schraubenförmige Schwimmkörper für nautische oder andere Geräte - Google Patents

Drehbare, schraubenförmige Schwimmkörper für nautische oder andere Geräte Download PDF

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Publication number
EP0161198A1
EP0161198A1 EP85450005A EP85450005A EP0161198A1 EP 0161198 A1 EP0161198 A1 EP 0161198A1 EP 85450005 A EP85450005 A EP 85450005A EP 85450005 A EP85450005 A EP 85450005A EP 0161198 A1 EP0161198 A1 EP 0161198A1
Authority
EP
European Patent Office
Prior art keywords
float
equal
face
radius
length
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.)
Withdrawn
Application number
EP85450005A
Other languages
English (en)
French (fr)
Inventor
Guy Mathieu
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0161198A1 publication Critical patent/EP0161198A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H1/00—Propulsive elements directly acting on water
    • B63H1/02—Propulsive elements directly acting on water of rotary type
    • B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H1/00—Propulsive elements directly acting on water
    • B63H1/38—Propulsive elements directly acting on water characterised solely by flotation properties, e.g. drums

Definitions

  • the present invention relates to improvements to rotary helical floats for nautical or other vehicles.
  • Rotary helical floats are known which are intended to equip nautical machines which ensure the buoyancy and / or the motricity of these machines.
  • These floats generally comprise one or more hollow turns developing in a helix around a body of general shape inscribed in a cylinder.
  • the present invention aims to solve these problems by proposing improvements which confer great qualities of buoyancy and traction on the rotary helicoid float.
  • the following helical floating float comprise a front part, a central part and a rear part in the extension of one another over the length of the float is characterized in that the front part is of a length equal to the length of the pitch of the furrow (s) divided by the number of furrows formed on the said float.
  • the rotary helical float according to the invention has a general shape inscribed in a cylinder and is provided with at least one groove 1 formed in hollow developing on all or part of the float along a propeller.
  • the following float The improvements according to the invention have, over its length, three parts in the extension of one of the other. These three parts consist of a front part 2, a central part 3 and a rear part 4.
  • the front part 2 is of a length equal to the value of the pitch of the groove or grooves 1 divided by the number of grooves formed in the float.
  • This front part 2 is advantageously profiled over a portion of its length as shown in fig.1.
  • the rear part is rounded in order to eliminate the submerged flat surfaces remaining after the digging of the grooves 1.
  • This rear part is preferably rounded from a height less than or equal to the half radius of the float up to the periphery of said float.
  • the grooves 1 dug in the float have, according to the improvements, at least two faces of different orientation and height according to their position over the length of the said float relative to its direction of travel.
  • the grooves 1 preferably have a rear face 5 facing the direction of travel of the float and a front face 6 facing the rear of the float and therefore opposite with respect to its direction of travel.
  • the rear face 5 has a propeller development over the entire length of the float.
  • This hub 7 is of diameter between one and second of the diameter of the float.
  • the front face 6 is divided over the length of the float into two separate parts, one of which is equal to the length of the front part 2 of the float and the other of which extends as an extension of the previous one to the rear part 4 said float.
  • the second portion of the front face 6 of the groove (s) 1, going from the end of the front part 2 to the rear part 4, has a helical development of pitch identical to that of face 5.
  • the depth of the front face 6 on this portion is equal to the depth of the rear face 5.
  • the bottom of the groove thus formed by the realization of the faces 5 and 6 is preferably slightly rounded.
  • the front face 6 of the groove (s) is produced along a plane passing through the axis of the float and angularly spaced from the start of the rear face 5 by an angle equal to 360 ° divided by The number of grooves in the float, 90 ° in the case of a float with four grooves.
  • the height of face 6 on part 2 of the float is equal to the radius of said float minus the radius of hub 7.
  • a rounded surface is formed, constituted by a portion of the surface of the hub 7.
  • the front face 6 of the groove (s) in the central 3 and rear 4 parts is helical and does not strike the water if the speed of the nautical craft or others is equal to the pitch of the groove (s) 1 multipLied by the number of turns .
  • this face comprises on a portion equal to the immersion height of the float a rounded surface along the arc of a circle AB (fig.3).
  • the immersion height is substantially equal to half a radius. Point A of the circular arc is therefore located at the half radius of the float.
  • Point B is located on the surface of the float so that the angle A 0 B shown in fig. 3 is between 30 and 45 °.
  • the entry into the water of the front face 6 of the front part 2 of the float is progressive and corresponds to a rotation of 30 to 45 ° of the float.
  • the speed of rotation of the float in the water requires great power to be achieved because of the resistances created by the front face 6 of the groove (s) 1 in the front part of the float.
  • the or the grooves 1 are of a very large step which can reach between 15 and 20 times The diameter of the float which has the consequence of being able to reduce the speed of rotation of said float and therefore the power required for this rotation.
  • the improvements made to the floater consist in reducing its diameter in relation to its length in order also to reduce the power required for its rotation.
  • the diameter of the float is 10 to 15 times less than the length of said float.
  • the helical float according to the invention is made of a light material, resistant to water corrosion and easy to work.
  • the grooves according to one embodiment are produced by cutting in the mass with a blade.
  • the floats with improvements according to the invention are adaptable to all nautical or other devices.
  • floats can be mounted in pairs or triplets, or the like, and can be rotated by any known means.
  • the improvements according to the invention make it possible to obtain rotary helical floats offering great qualities of buoyancy and motricity and not requiring great power for their drive.
EP85450005A 1984-03-13 1985-03-11 Drehbare, schraubenförmige Schwimmkörper für nautische oder andere Geräte Withdrawn EP0161198A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8403968 1984-03-13
FR8403968A FR2561202A1 (fr) 1984-03-13 1984-03-13 Perfectionnements aux flotteurs helicoides rotatifs pour engins nautiques ou autres

Publications (1)

Publication Number Publication Date
EP0161198A1 true EP0161198A1 (de) 1985-11-13

Family

ID=9302051

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85450005A Withdrawn EP0161198A1 (de) 1984-03-13 1985-03-11 Drehbare, schraubenförmige Schwimmkörper für nautische oder andere Geräte

Country Status (3)

Country Link
EP (1) EP0161198A1 (de)
ES (1) ES295802Y (de)
FR (1) FR2561202A1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2470827C1 (ru) * 2011-04-04 2012-12-27 Федеральное государственное образовательное учреждение высшего профессионального образования "Кубанский государственный аграрный университет" Движитель прямоточный
RU2472663C2 (ru) * 2011-03-30 2013-01-20 Федеральное государственное образовательное учреждение высшего профессионального образования "Кубанский государственный аграрный университет" Проходной движитель
RU2472664C2 (ru) * 2011-03-11 2013-01-20 Федеральное государственное образовательное учреждение высшего профессионального образования "Кубанский государственный аграрный университет" Движитель конический
RU2473447C2 (ru) * 2011-02-25 2013-01-27 Федеральное государственное образовательное учреждение высшего профессионального образования "Кубанский государственный аграрный университет" Движитель винтовой
RU2482000C2 (ru) * 2011-04-04 2013-05-20 Федеральное государственное образовательное учреждение высшего профессионального образования "Кубанский государственный аграрный университет" Винтовой движитель
NO337409B1 (no) * 2014-11-19 2016-04-11 Ivan Nilsen Skrog for et fartøy

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR85615E (fr) * 1964-04-09 1965-09-17 Dispositif à hélice assurant simultanément les déplacements et la flottabilité d'engins nautiques
FR2034240A1 (de) * 1969-02-27 1970-12-11 Justinien Marcel
FR2229604A1 (de) * 1973-05-18 1974-12-13 Justinien Marcel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR85615E (fr) * 1964-04-09 1965-09-17 Dispositif à hélice assurant simultanément les déplacements et la flottabilité d'engins nautiques
FR2034240A1 (de) * 1969-02-27 1970-12-11 Justinien Marcel
FR2229604A1 (de) * 1973-05-18 1974-12-13 Justinien Marcel

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2473447C2 (ru) * 2011-02-25 2013-01-27 Федеральное государственное образовательное учреждение высшего профессионального образования "Кубанский государственный аграрный университет" Движитель винтовой
RU2472664C2 (ru) * 2011-03-11 2013-01-20 Федеральное государственное образовательное учреждение высшего профессионального образования "Кубанский государственный аграрный университет" Движитель конический
RU2472663C2 (ru) * 2011-03-30 2013-01-20 Федеральное государственное образовательное учреждение высшего профессионального образования "Кубанский государственный аграрный университет" Проходной движитель
RU2470827C1 (ru) * 2011-04-04 2012-12-27 Федеральное государственное образовательное учреждение высшего профессионального образования "Кубанский государственный аграрный университет" Движитель прямоточный
RU2482000C2 (ru) * 2011-04-04 2013-05-20 Федеральное государственное образовательное учреждение высшего профессионального образования "Кубанский государственный аграрный университет" Винтовой движитель
NO337409B1 (no) * 2014-11-19 2016-04-11 Ivan Nilsen Skrog for et fartøy
NO20141389A1 (no) * 2014-11-19 2016-04-11 Ivan Nilsen Skrog for et fartøy

Also Published As

Publication number Publication date
FR2561202A1 (fr) 1985-09-20
ES295802Y (es) 1987-12-16
ES295802U (es) 1987-06-16

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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