Permobil Ab

Anton Danielsson

Herbert Van De Wal

Ulrik Löfvander

A powered midwheel drive wheelchair includes a chassis, a seating system attached to the chassis, the seating system configured to move between a seated position and a standing position, a pair of drive wheels, a pair of front swing arms pivotally connected to the chassis, and front support wheels attached to a respective one of the front swing arms, wherein each front swing arm is configured to pivot relative to the chassis between a first position, where the front support wheel is at its uppermost position in relation to the chassis, and a second position, where the front support wheel is at its lowermost position in relation to the chassis, and wherein the front swing arms are configured to pivot to the first position in response to the seating system transitioning to the standing position, whereby the chassis is configured to tilt forward in relation to the floor surface.

Powered midwheel drive wheelchair with standing capability

The present disclosure relates to a swing arm assembly () for a mid-wheel drive wheelchair (), comprising: a front swing arm () having a front swing arm pivot point (), a drive assembly swing arm () having a drive assembly swing arm pivot point () and a resilient member first mounting point (), a rear swing arm () having a rear swing arm pivot point () and a resilient member second mounting point (), and a resilient member () configured to be connected to the resilient member first mounting point () and to the resilient member second mounting point () to enable force transfer between the drive assembly swing arm () and the rear swing arm ().

Swing arm assembly for a mid-wheel drive wheelchair

The present disclosure relates to a swing arm linkage () for a mid-wheel drive wheelchair, comprising: a first swing arm () having a first swing arm pivot point () and a linkage member first mounting point (), a second swing arm () having a second swing arm pivot point () and a linkage member second mounting point (), a linkage member () configured to be connected to the linkage member first mounting point () and to the linkage member second mounting point (), to enable force transfer between the second swing arm () and the first swing arm (), wherein the linkage member () has an elongated shape defining a linkage axis (A) extending between the linkage member first mounting point () and the linkage member second mounting point (), a first straight line being formed between the first swing arm pivot point () and the linkage member first mounting point (), and a second straight line being formed between the second swing arm pivot point () and the linkage member second mounting point (), wherein the linkage member first mounting point () and the linkage member second mounting point () are so arranged relative to each other that the sum of an angle &#x3b1; between the linkage axis and a line perpendicular to the first straight line and extending from the linkage member first mounting point and an angle &#x3b2; between the linkage axis and a line perpendicular to the second straight line and extending from the linkage member second mounting point is constant or increasing with increasing ditch angle.

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Sundsvall, Sweden

Anton Danielsson