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US 2015/0272794 A1Published application
Wheelchair gearshift arrangement
AssigneeGearwheel AB
InventorsChristofer Sorqvist, John-Edvard Stenstrand, Lars Tenerz
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AssigneeGearwheel AB
InventorsChristofer Sorqvist, John-Edvard Stenstrand, Lars Tenerz
Estimating the term…
Embodiments herein relate to a wheelchair gearshift arrangement (10), which comprises an axle tube (20) and a pair of wheel attachment adaptors (30) inserted into a respective end (21, 22) of the axle tube (20). The wheel attachment adaptors (30) further includes a respective axle sleeve (40) adapted to receive and hold a respective wheel axle (51) of a respective complete wheelchair wheel (50). Each complete wheelchair wheel (50) having a respective wheel axle centric, axially translatable, gear change mechanism (52). One or more gear change actuators (80) are arranged within the axle tube (20) such that they are operative to selectively, upon user manipulation of an associated gear selector (60), axially translate the associated gear change mechanisms (52) of the respective complete wheelchair wheels (50). Such translation will affect a change of gear ratio between a push-rim (55) and wheel-rim (56) of each respective complete wheelchair wheel (50).
A wheelchair gearshift arrangement comprising an axle tube and a pair of wheel attachment adaptors inserted into a respective end of the axle tube and including a respective axle sleeve adapted to receive and hold a respective wheel axle of a respective complete wheelchair wheel having a respective wheel axle centric, axially translatable, gear change mechanism, such that one or more gear change actuators arranged within the axle tube are operative to selectively, upon user manipulation of an associated gear selector, axially translate the associated gear change mechanisms of the respective complete wheelchair wheels to affect a change of gear ratio between a push-rim and wheel-rim of each respective complete wheelchair wheel.
Dependencies are inferred from the claim text.