FR2896476A1 - Bicycle tandem, has front and rear wheels, where rear wheels are driving wheels and front wheel is steering wheel, and machined plate fixed in fork pivoting from front to back on lateral axles above center of one rear wheel of front bicycle - Google Patents

Bicycle tandem, has front and rear wheels, where rear wheels are driving wheels and front wheel is steering wheel, and machined plate fixed in fork pivoting from front to back on lateral axles above center of one rear wheel of front bicycle Download PDF

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Publication number
FR2896476A1
FR2896476A1 FR0600619A FR0600619A FR2896476A1 FR 2896476 A1 FR2896476 A1 FR 2896476A1 FR 0600619 A FR0600619 A FR 0600619A FR 0600619 A FR0600619 A FR 0600619A FR 2896476 A1 FR2896476 A1 FR 2896476A1
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France
Prior art keywords
bicycle
wheel
tandem
wheels
rear wheels
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Pending
Application number
FR0600619A
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French (fr)
Inventor
Paul Large
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Individual
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Individual
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Publication date
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Priority to FR0600619A priority Critical patent/FR2896476A1/en
Publication of FR2896476A1 publication Critical patent/FR2896476A1/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K3/00—Bicycles
    • B62K3/12—Tandems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K13/00—Cycles convertible to, or transformable into, other types of cycles or land vehicle
    • B62K13/02—Cycles convertible to, or transformable into, other types of cycles or land vehicle to a tandem
    • B62K13/025—Cycles convertible to, or transformable into, other types of cycles or land vehicle to a tandem from two or more cycles

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automatic Cycles, And Cycles In General (AREA)

Abstract

The tandem has a front wheel and two rear wheels in line, where the rear wheels are driving wheels (2), and the front wheel is a steering wheel. A saddle (7) is provided at the top, center and rear of a bicycle. A machined plate (8) screwed on two bicycle frames (1) is fixed in a fork (9), where the fork pivots from front to back on two lateral axles above the center of one rear wheel of a front bicycle. A pedal assembly and a chain are installed on the left side of the tandem.

Description

La présente invention concerne un tandem à 3 roues en ligne dont les 2The present invention relates to a tandem with 3 wheels in line of which the 2

roues arrières sont motrices (2). Tandem constitué de deux cadres de bicyclettes (1) accouplés entre eux, l'un derrière l'autre, pour former un ensemble compact d'un seul élément à 3 roues en ligne. 5 La bicyclette de tête est équipée à l'avant d'une direction (3) comprenant une fourche (4), une roue directrice (5), un système de direction par un guidon (6) lui même équipé d'un système de freinage sur les deux roues de la bicyclette de tête Fig. 1 du côté droit. En haut, au centre, et à l'arrière de cette bicyclette, une selle (7) assure une bonne assise au pilote. 10 Le cadre de cette bicyclette de tête est prolongé en haut et sous la selle par une plaque usinée rigide (8) vissée horizontalement sur le cadre (1), venant s'imbriquer par coulissement dans une fourche (9) fixée sur la bicyclette suiveuse. Cette fourche droite à 90 (9) est fixée par 2 axes latéraux (10) sur ]es haubans arrières (11) de la bicyclette de tête au niveau et au dessus du centre de la roue arrière, 15 assurant une faible rotation d'avant en arrière, permettant au tandem d'avoir toujours les 3 roues en contact avec la route. Sur la plaque usinée (8) rendu solidaire par sa fixation sur la bicyclette de tête sont fixés une potence (12) et un guidon (13). Celui-ci est muni d'une commande de freinage sur la roue arrière du tandem assurant ainsi, au passager, une bonne assistance 20 de freinage. L'assise du passager est assuré par une selle (7) à l'arrière du tandem Fig.l côté droit. La bicyclette suiveuse est constituée comme la bicyclette de tête, d'un cadre (1), d'une roue motrice (2), équipée à l'avant de la fourche à 90 (9) qui reste directrice, 25 assurant le déplacement de gauche à droite et de droite à gauche, permettant au tandem de prendre les virages droit et gauche tout en restant solidaire de la bicycle:te de tête, Fig. 1 côté droit. Le mode de fonctionnement du tandem est obtenu par un pédalier (14), une roue libre (15), une chaîne (16) sur chaque demi- bicyclette. L ensen-ble de la 30 transmission : pédaliers, roues libres, étant d'un même rapport sur chaque demi-bicyclette, Fig. 1 côté droit.  rear wheels are driving (2). Tandem consisting of two frames of bicycles (1) coupled together, one behind the other, to form a compact set of a single element with 3 wheels in line. The head bicycle is equipped at the front with a steering (3) comprising a fork (4), a steering wheel (5), a steering system by a handlebar (6) itself equipped with a steering system. braking on both wheels of the head bicycle Fig. 1 on the right side. At the top, in the center, and at the rear of this bicycle, a saddle (7) provides a good seat for the pilot. The frame of this head bicycle is extended at the top and under the saddle by a rigid machined plate (8) screwed horizontally on the frame (1), slidably interlocking in a fork (9) attached to the follower bicycle. . This right fork 90 (9) is fixed by 2 lateral axes (10) on the rear stays (11) of the head bicycle at and above the center of the rear wheel, ensuring a slight forward rotation. backwards, allowing the tandem to always have 3 wheels in contact with the road. On the machined plate (8) secured by its attachment to the head bicycle are fixed a bracket (12) and a handlebar (13). It is provided with a brake control on the rear wheel of the tandem thus providing the passenger with good braking assistance. The passenger seat is provided by a seat (7) at the rear of the tandem Fig.l right side. The following bicycle is constituted as the head bicycle, a frame (1), a drive wheel (2), equipped in front of the fork 90 (9) which remains director, 25 ensuring the displacement of left to right and from right to left, allowing the tandem to take the right and left turns while remaining attached to the bicycle: head, Fig. 1 right side. The operating mode of the tandem is obtained by a pedal (14), a freewheel (15), a chain (16) on each half-bicycle. The whole of the transmission: pedals, freewheels, being of the same ratio on each half-bicycle, FIG. 1 right side.

La synchronisation du pédalage du tandem est obtenu du côté gauche du tandem par la mise en place d'un pédalier sur chaque demi-bicyclette, pédalier d'égale denture (17) reliés entre eux par une unique chaîne (18) guidée elle-même par un galet (19) fixé sur la potence (12) de la bicyclette de tête.  The synchronization of the pedaling of the tandem is obtained on the left side of the tandem by setting up a pedal on each half-bicycle, pedals of equal teeth (17) interconnected by a single chain (18) guided itself by a roller (19) fixed on the bracket (12) of the overhead bicycle.

La tension de la chaîne (18) est assurée par ce même galet (19), assisté, lui même, par 2 galets (20), montés perpendiculairement du côté gauche du tandem, Fig. 2, côté gauche. Le détail et la présentation de l'accouplement articulé du tandem est représenté sur la figure 3 comme suit : Une plaque usinée (8), vissée sur le cadre (1), s'imbrique dans la fourche (9), celle-ci pivotant d'avant en arrière sur deux axes latéraux (10) au dessus du centre de la roue arrière de la bicyclette de tête, permettant ainsi à la bicyclette suiveuse d'absorber les inégalités du sol et cela sans se désolidariser de la bicyclette de tête. Cette plaque (8) est équipée, sur sa partie supérieure, d'une potence (12), d'un 15 guidon (13) et sur sa partie gauche, d'un galet tendeur (19).Le cadre de la bicyclette suiveuse pivote latéralement sur sa partie tournante autour de la fourche (9).  The tension of the chain (18) is provided by the same roller (19), assisted, itself, by 2 rollers (20), mounted perpendicularly to the left side of the tandem, FIG. 2, left side. The detail and the presentation of the articulated coupling of the tandem is represented on FIG. 3 as follows: A machined plate (8), screwed on the frame (1), is interlocked in the fork (9), this pivoting one forwards and backwards on two lateral axes (10) above the center of the rear wheel of the head bicycle, thus allowing the follower bicycle to absorb the unevenness of the ground and without detaching from the head bicycle. This plate (8) is equipped on its upper part, a bracket (12), a handlebar (13) and on its left side, a tensioner roller (19) .The frame of the bicycle follower rotates laterally on its rotating part around the fork (9).

Claims (5)

Revendicationsclaims 1- Un tandem (1) à trois roues en ligne, caractérisé en ce que les deux roues arrières sont motrices (2) et la roue de devant directrice (5).  1- A tandem (1) with three wheels in line, characterized in that the two rear wheels are driving (2) and the front steering wheel (5). 2- Tandem selon la revendication 1, caractérisé en ce qu'il comprend deux bicyclettes dont la bicyclette suiveuse, dépourvue de sa roue avant, ces 2 demi- bicyclettes étant reliées entre elles par le centre et le haut du tandem par un dispositif utilisant une fourche droite à 90 (9) et une plaque usinée (8) venant s'imbriquer dans cette fourche.  2- Tandem according to claim 1, characterized in that it comprises two bicycles including the following bicycle, devoid of its front wheel, these 2 half bicycles being interconnected by the center and the top of the tandem by a device using a straight fork 90 (9) and a machined plate (8) nesting in this fork. 3- Tandem selon l'une des revendications précédentes, caractérisé en ce que le cadre de la bicyclette suiveuse pivote de droite à gauche et de gauche à droite autour de 10 la fourche (9) comme une direction classique.  3- Tandem according to one of the preceding claims, characterized in that the frame of the follower bicycle pivots from right to left and from left to right around the fork (9) as a conventional direction. 4- Tandem selon l'une des revendications précédentes, caractérisé en ce que la synchronisation du pédalage du tandem est assurée par un dispositif comprenant 2 pédalier (17) d'égale denture et d'une chaîne (18) montée du côté gauche du tandem.  4- Tandem according to one of the preceding claims, characterized in that the synchronization pedaling tandem is provided by a device comprising 2 crankset (17) of equal teeth and a chain (18) mounted on the left side of the tandem . 5- Tandem selon l'une des revendications précédentes, caractérisé en ce que 15 chaque roue motrice a une même mode de transmission, à savoir un pédalier, une roue libre, une chaîne d'un même rapport sur chaque demi-bicyclette.  5- Tandem according to one of the preceding claims, characterized in that each drive wheel has the same mode of transmission, namely a pedal, a freewheel, a chain of the same ratio on each half-bicycle.
FR0600619A 2006-01-24 2006-01-24 Bicycle tandem, has front and rear wheels, where rear wheels are driving wheels and front wheel is steering wheel, and machined plate fixed in fork pivoting from front to back on lateral axles above center of one rear wheel of front bicycle Pending FR2896476A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0600619A FR2896476A1 (en) 2006-01-24 2006-01-24 Bicycle tandem, has front and rear wheels, where rear wheels are driving wheels and front wheel is steering wheel, and machined plate fixed in fork pivoting from front to back on lateral axles above center of one rear wheel of front bicycle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0600619A FR2896476A1 (en) 2006-01-24 2006-01-24 Bicycle tandem, has front and rear wheels, where rear wheels are driving wheels and front wheel is steering wheel, and machined plate fixed in fork pivoting from front to back on lateral axles above center of one rear wheel of front bicycle

Publications (1)

Publication Number Publication Date
FR2896476A1 true FR2896476A1 (en) 2007-07-27

Family

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FR0600619A Pending FR2896476A1 (en) 2006-01-24 2006-01-24 Bicycle tandem, has front and rear wheels, where rear wheels are driving wheels and front wheel is steering wheel, and machined plate fixed in fork pivoting from front to back on lateral axles above center of one rear wheel of front bicycle

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FR (1) FR2896476A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR914900A (en) * 1945-04-21 1946-10-21 Improvements to means of transport such as cycles and similar vehicles and transmission and control system adapted to these means of transport
US6290246B1 (en) * 2000-10-12 2001-09-18 Bor-Ching Lin Quick mounting arrangement for tandem
WO2002026554A1 (en) * 2000-09-08 2002-04-04 Ok Young Park A two-seater bicycle combined with a single-seater bicycle
US20030011170A1 (en) * 2001-07-11 2003-01-16 Yakima Products, Inc. Hitch assembly for attaching a trailer to a bicycle
EP1389578A1 (en) * 2002-08-13 2004-02-18 Jean-Claude Sonnefraud Front fork of a bicycle including an apparatus to adapt its geometry to a threewheeled tandem application

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR914900A (en) * 1945-04-21 1946-10-21 Improvements to means of transport such as cycles and similar vehicles and transmission and control system adapted to these means of transport
WO2002026554A1 (en) * 2000-09-08 2002-04-04 Ok Young Park A two-seater bicycle combined with a single-seater bicycle
US6290246B1 (en) * 2000-10-12 2001-09-18 Bor-Ching Lin Quick mounting arrangement for tandem
US20030011170A1 (en) * 2001-07-11 2003-01-16 Yakima Products, Inc. Hitch assembly for attaching a trailer to a bicycle
EP1389578A1 (en) * 2002-08-13 2004-02-18 Jean-Claude Sonnefraud Front fork of a bicycle including an apparatus to adapt its geometry to a threewheeled tandem application

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