A wheel assembly comprising a wheelchair wheel (5) and a backstop arrangement (10; 30; 70) configured to selectively engage and disengage a backstop function and comprising a backstop selector (15; 35; 75) and a backstop member (18; 38; 78), wherein the wheel (5) comprises an internal-gear wheel hub (11; 31; 71) comprising a number of internal gears (57, 58) and having an inner rotatable circumferential surface (13; 33; 73), and wherein the backstop member is configured to allow the inner circumferential surface to rotate in one direction and to prevent rotation in the opposite direction. The wheel assembly comprises further a gear-shift arrangement comprising a shift member (54), which is axially moveable within the internal-gear hub (31) to engage a specific gear of said number of internal gears (57, 58), and wherein the shift member (54) via a connector member (55) is operatively connected to the backstop selector.
BACKSTOP AND GEAR-SHIFT ARRANGEMENT FOR A WHEELCHAIR WHEEL
SCHUTZ UND SCHALTANORDNUNG FÜR EINEN ROLLSTUHL
AGENCEMENT DE BUTÉE ARRIÈRE ET DE CHANGEMENT DE VITESSE POUR ROUE DE FAUTEUIL ROULANT
2020-04-22
Patent
Elektronische Ressource
Englisch
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 / B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer |
BACKSTOP AND GEAR-SHIFT ARRANGEMENT FOR A WHEELCHAIR WHEEL
Europäisches Patentamt | 2018
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Europäisches Patentamt | 2021
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