FR2425976A1 - Small boat propulsion equipment - has flexible fin partly split in lengthwise direction and joined to rigid edge with socket for handle - Google Patents

Small boat propulsion equipment - has flexible fin partly split in lengthwise direction and joined to rigid edge with socket for handle

Info

Publication number
FR2425976A1
FR2425976A1 FR7814831A FR7814831A FR2425976A1 FR 2425976 A1 FR2425976 A1 FR 2425976A1 FR 7814831 A FR7814831 A FR 7814831A FR 7814831 A FR7814831 A FR 7814831A FR 2425976 A1 FR2425976 A1 FR 2425976A1
Authority
FR
France
Prior art keywords
joined
socket
handle
lengthwise direction
rigid edge
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Withdrawn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
FR7814831A
Other languages
French (fr)
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
Priority to FR7814831A priority Critical patent/FR2425976A1/en
Publication of FR2425976A1 publication Critical patent/FR2425976A1/en
Withdrawn legal-status Critical Current

Links

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
    • B63H1/30—Propulsive elements directly acting on water of non-rotary type
    • B63H1/36—Propulsive elements directly acting on water of non-rotary type swinging sideways, e.g. fishtail type

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Flexible Shafts (AREA)

Abstract

The propeller uses the oscillating movement of a flexible fin. The fin (1) is partly split in the travel direction of the boat, so as to form two flexible parts symmetrical in relation to the lenghtwise axis, and joined to a rigid edge (2). A drive spindle coupled to the edge transmits the oscillatory movement generated by the feet acting against two projections alternately. Steering can be by a helm controlled by handlebars. An engine or pedals can be used to provide the power.
FR7814831A 1978-05-19 1978-05-19 Small boat propulsion equipment - has flexible fin partly split in lengthwise direction and joined to rigid edge with socket for handle Withdrawn FR2425976A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7814831A FR2425976A1 (en) 1978-05-19 1978-05-19 Small boat propulsion equipment - has flexible fin partly split in lengthwise direction and joined to rigid edge with socket for handle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7814831A FR2425976A1 (en) 1978-05-19 1978-05-19 Small boat propulsion equipment - has flexible fin partly split in lengthwise direction and joined to rigid edge with socket for handle

Publications (1)

Publication Number Publication Date
FR2425976A1 true FR2425976A1 (en) 1979-12-14

Family

ID=9208430

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7814831A Withdrawn FR2425976A1 (en) 1978-05-19 1978-05-19 Small boat propulsion equipment - has flexible fin partly split in lengthwise direction and joined to rigid edge with socket for handle

Country Status (1)

Country Link
FR (1) FR2425976A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE89053C (en) *
GB273226A (en) * 1927-04-28 1927-06-30 Oscar Hansson Improvement in propelling devices for water craft
FR691766A (en) * 1930-02-10 1930-10-27 Thruster device for all kinds of marine craft with reciprocating control
GB771975A (en) * 1954-03-23 1957-04-10 Guido Antoni Improvements in devices for the propulsion and steering of watercraft and the like
FR82572E (en) * 1962-11-12 1964-03-06 swimming or nautical equipment
FR2128898A5 (en) * 1971-03-08 1972-10-27 Gronier Jean

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE89053C (en) *
GB273226A (en) * 1927-04-28 1927-06-30 Oscar Hansson Improvement in propelling devices for water craft
FR691766A (en) * 1930-02-10 1930-10-27 Thruster device for all kinds of marine craft with reciprocating control
GB771975A (en) * 1954-03-23 1957-04-10 Guido Antoni Improvements in devices for the propulsion and steering of watercraft and the like
FR82572E (en) * 1962-11-12 1964-03-06 swimming or nautical equipment
FR2128898A5 (en) * 1971-03-08 1972-10-27 Gronier Jean

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Legal Events

Date Code Title Description
ST Notification of lapse