IT1269442B - TWO CRANK PROPULSION DEVICE AS OPPOSITE AS TO PRODUCE ALWAYS POSITIVE PUSHING TIMES WITH ADJUSTABLE MINIMUMS, ESPECIALLY FOR SPEEDS AND SIMILAR - Google Patents

TWO CRANK PROPULSION DEVICE AS OPPOSITE AS TO PRODUCE ALWAYS POSITIVE PUSHING TIMES WITH ADJUSTABLE MINIMUMS, ESPECIALLY FOR SPEEDS AND SIMILAR

Info

Publication number
IT1269442B
IT1269442B ITMI940065A ITMI940065A IT1269442B IT 1269442 B IT1269442 B IT 1269442B IT MI940065 A ITMI940065 A IT MI940065A IT MI940065 A ITMI940065 A IT MI940065A IT 1269442 B IT1269442 B IT 1269442B
Authority
IT
Italy
Prior art keywords
cranks
hub
opposite
multiplication
propulsion device
Prior art date
Application number
ITMI940065A
Other languages
Italian (it)
Inventor
Bruno Vardanega
Original Assignee
Vardenega Virgilio
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 Vardenega Virgilio filed Critical Vardenega Virgilio
Priority to ITMI940065A priority Critical patent/IT1269442B/en
Publication of ITMI940065A0 publication Critical patent/ITMI940065A0/en
Priority to AU14654/95A priority patent/AU1465495A/en
Priority to PCT/IT1995/000004 priority patent/WO1995019909A1/en
Publication of ITMI940065A1 publication Critical patent/ITMI940065A1/en
Application granted granted Critical
Publication of IT1269442B publication Critical patent/IT1269442B/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M1/00—Rider propulsion of wheeled vehicles
    • B62M1/36—Rider propulsion of wheeled vehicles with rotary cranks, e.g. with pedal cranks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M3/00—Construction of cranks operated by hand or foot
    • B62M2003/006—Crank arrangements to overcome dead points

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)
  • Steering Devices For Bicycles And Motorcycles (AREA)
  • Press Drives And Press Lines (AREA)
  • Friction Gearing (AREA)

Abstract

Dispositivo di propulsione a spinta mediante due pedivelle contrapposte in modo da creare momenti di spinta anche minimi sempre positivi, particolarmente per velocipedi e simili. Detto dispositivo è costituito da una moltiplica dentata montata all'estremità del mozzo tubolare del velocipede in modo liberamente girevole intorno ad un asse fisso coassiale a detto mozzo, da due pedivelle fra loro contrapposte e girevoli in modo indipendente, sia fra loro che rispetto a detta moltiplica, intorno ad un unico asse diverso e parallelo a quello di detta moltiplica ed anche spostabile, parallelamente ed orizzontalmente allo stesso asse fisso, verso la ruota posteriore del velocipede mediante un supporto oscillante intorno ad un punto fisso ricavato entro detto mozzo e bloccabile su questo in diverse posizioni prestabilite, dette due pedivelle essendo calettate su detta moltiplica tramite mezzi di impegno tali da consentire ad ognuna di esse di trascinare in rotazione detta moltiplica e da permettere, alternativamente, ad una di esse, quella ciclicamente attiva, di potersi disporre in posizione inclinata, rispetto a quella opposta, verso la ruota anteriore del velocipede, e nello stesso tempo a quella passiva di venire trascinata dalla stessa moltiplica, detto supporto oscillante, sostenente l'asse di dette pedivelle, essendo dimensionato in modo da poter essere bloccato alla parte fissa del mozzo in successive posizioni prestabilite corrispondenti ad altrettanti angoli di inclinazione in avanti di ogni pedivella alternativamente attiva.Thrust propulsion device by means of two opposite cranks in order to create even positive thrust moments, always positive, particularly for velocipedes and the like. Said device is constituted by a toothed gear mounted at the end of the tubular hub of the velocipede freely rotatable around a fixed axis coaxial to said hub, by two cranks opposed to each other and independently rotatable, both with respect to each other multiplies, around a single different axis parallel to that of said multiplier and also movable, parallel and horizontally to the same fixed axis, towards the rear wheel of the velocipede by means of a support oscillating around a fixed point obtained within said hub and lockable on this in different predetermined positions, said two cranks being keyed on said multiplication by means of engagement such as to allow each of them to rotate said multiplication in rotation and to allow, alternatively, to one of them, the cyclically active one, to be able to position itself in position inclined, with respect to the opposite one, towards the front wheel of the velocipe de, and at the same time to the passive one to be dragged by the same multiplication, said oscillating support, supporting the axis of said cranks, being sized so that it can be locked to the fixed part of the hub in successive predetermined positions corresponding to as many angles of forward tilt of each alternately active crank.

ITMI940065A 1994-01-19 1994-01-19 TWO CRANK PROPULSION DEVICE AS OPPOSITE AS TO PRODUCE ALWAYS POSITIVE PUSHING TIMES WITH ADJUSTABLE MINIMUMS, ESPECIALLY FOR SPEEDS AND SIMILAR IT1269442B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ITMI940065A IT1269442B (en) 1994-01-19 1994-01-19 TWO CRANK PROPULSION DEVICE AS OPPOSITE AS TO PRODUCE ALWAYS POSITIVE PUSHING TIMES WITH ADJUSTABLE MINIMUMS, ESPECIALLY FOR SPEEDS AND SIMILAR
AU14654/95A AU1465495A (en) 1994-01-19 1995-01-17 Device for increasing efficiency of the thrust made by means of pedal cranks on bicycles and the like
PCT/IT1995/000004 WO1995019909A1 (en) 1994-01-19 1995-01-17 Device for increasing efficiency of the thrust made by means of pedal cranks on bicycles and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI940065A IT1269442B (en) 1994-01-19 1994-01-19 TWO CRANK PROPULSION DEVICE AS OPPOSITE AS TO PRODUCE ALWAYS POSITIVE PUSHING TIMES WITH ADJUSTABLE MINIMUMS, ESPECIALLY FOR SPEEDS AND SIMILAR

Publications (3)

Publication Number Publication Date
ITMI940065A0 ITMI940065A0 (en) 1994-01-19
ITMI940065A1 ITMI940065A1 (en) 1995-07-19
IT1269442B true IT1269442B (en) 1997-04-01

Family

ID=11367550

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI940065A IT1269442B (en) 1994-01-19 1994-01-19 TWO CRANK PROPULSION DEVICE AS OPPOSITE AS TO PRODUCE ALWAYS POSITIVE PUSHING TIMES WITH ADJUSTABLE MINIMUMS, ESPECIALLY FOR SPEEDS AND SIMILAR

Country Status (3)

Country Link
AU (1) AU1465495A (en)
IT (1) IT1269442B (en)
WO (1) WO1995019909A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997020726A1 (en) * 1995-12-07 1997-06-12 Florin Niculescu Crankset with no neutral position
US6085613A (en) * 1995-12-07 2000-07-11 Niculescu; Florin Crankset with no neutral position
FR2742408A1 (en) * 1995-12-18 1997-06-20 Niculescu Florin Crankset with no neutral position
FR2824042B1 (en) 2001-04-30 2003-07-11 Joel Kerjean ENDLESS TRANSMISSION, ESPECIALLY FOR A BICYCLE AND VEHICLE OR WINCH EQUIPPED WITH SUCH A TRANSMISSION
CN1502516A (en) * 2002-11-22 2004-06-09 郭生文 Blindness free stepping speed-increasing bicycle chain wheel-axle
KR200339552Y1 (en) * 2003-06-14 2004-01-24 홍재호 Quantum pedaling drive unit
JP4768715B2 (en) 2004-04-01 2011-09-07 ビーエイチエスシーアイ エルエルシー Continuously variable transmission
DE102004031418A1 (en) * 2004-06-29 2006-02-16 Rumpf, Paul Crankshaft torque converter, for torque control of torque absorption and torque transmission of crank mechanisms

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH359050A (en) * 1957-01-26 1961-12-15 Stettler Oscar Pedal cranks on bicycles
NL7806268A (en) * 1978-06-08 1979-12-11 Geert Spakman Bicycle crank drive mechanism - has each crank pivoted to lever secured on crankshaft and has roller on each crank guided in enclosed curved track
US4816009A (en) * 1988-08-09 1989-03-28 Gabriel Philipp Power transmission system particularly useful for bicycles

Also Published As

Publication number Publication date
ITMI940065A1 (en) 1995-07-19
AU1465495A (en) 1995-08-08
WO1995019909A1 (en) 1995-07-27
ITMI940065A0 (en) 1994-01-19

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19971222