Wheelchair (10) with two independent driving arms (21, 21'), comprising a seat (16), two rear large wheels (12, 13) and two front small wheels (14), wherein the small wheels (14) can be freely turned around a vertical axis, and a common frame (11) for holding the listed parts, and the two driving arms (21, 21') are fixed to the frame (11) by means of respective pivot bearings (25) which are fixed at a low position close to the place where the small wheels (14) are attached to the frame (11), and the driving arms (21, 21') extend till a height which is sufficiently high for the person sitting in the wheelchair (10) to hold their upper end portions easily with hands and to move them in forward-backward directions around the respective pivotal bearings, and both of the large wheels (12, 13) are equipped with respective brakes that can be operated by the driving arms (21, 21') or by respective brake handles (42) positioned on the driving arms (21, 21'), and to respective lower sections of the driving arms (21, 21') respective ropes (32, 32') are connected, and the two large wheels (12, 13) comprise respective wheel hubs (30, 30') each equipped with freewheel, and to one side of each wheel hub (30, 30') a respective one of rope drums (31, 31') is attached, the rope drums (31, 31') are each provided with a spring bias, and a winding made of said rope (32, 32') comprising a predetermined number of turns is provided on the mantle of each rope drum (31, 31'), wherein a predetermined displacement length of the pulling of the rope (32, 32') in forward direction results in a given turning of the associated wheel hub (30, 30') in forward direction, and when the rope drum (31, 31') is turned in the other direction the freewheel releases the connection towards the large wheel (12 or 13), and the wheel hub (30, 30') comprises a release mechanism that releases the locking of the freewheel when the large wheel (12 or 13) is moved in backward direction and backward movement gets allowed.


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    Title :

    WHEELCHAIR WITH TWO INDEPENDENT DRIVING ARMS


    Additional title:

    ROLLSTUHL MIT ZWEI UNABHÄNGIGEN ANTRIEBSARMEN
    FAUTEUIL ROULANT COMPRENANT DEUX BRAS D'ENTRAÎNEMENT INDÉPENDANTS


    Contributors:

    Publication date :

    2022-01-26


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    A61G TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS , Transport, persönliche Beförderungsmittel, oder Lagerung besonders ausgebildet für Kranke oder Behinderte / B62K Fahrräder , CYCLES / B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer



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