Permobil Ab

Erik Kalf

Herbert Van De Wal

Pär Torgersson

Urban Lind

Anders Edholm

Benny Tenggren

The present disclosure relates to a seat arrangement () for an electrically powered wheelchair, wherein the seat arrangement comprises (): a mounting arrangement for mounting the seat arrangement () to a chassis of an electrically powered wheelchair, a seat frame (), a backrest frame (), a backrest actuator (), wherein the backrest frame () is pivotally coupled to the seat frame (), forming a first pivot axis (A), and wherein the backrest frame () is pivotally coupled to the backrest actuator (), forming a translatable second pivot axis (A), a retaining mechanism () arranged to retain the backrest frame () in an upright position while the backrest frame () is subjected to a forward-tilting force smaller than a threshold value, wherein the retaining mechanism () is arranged to allow movement of the backrest frame () to a forward-tilted position when the backrest frame () is subjected to a forward-tilting force equal to or greater than the threshold value, and a locking mechanism () arranged to lock the backrest frame () in the forward-tilted position. An electrically powered wheelchair comprising a seat arrangement is also disclosed herein.

Seat arrangement and electrically powered wheelchair comprising the same

The present disclosure relates to a chassis arrangement () for an electrically powered wheelchair (). The chassis arrangement () comprises a main chassis member () having a first side panel () defining a first side of the main chassis member (), and a second side panel () defining a second side of the main chassis member (), the second side being opposite to the first side, wherein each of the first side panel () and the second side panel () has spring attachment arrangements () for attachment of spring assemblies (), wherein each of the first side panel () and the second side panel () has pivot arm attachment arrangements () for attachment of pivot arms (), wherein the main chassis member () has a torsional stiffness greater than 1200 Nm/degree. An electrically powered wheelchair comprising a chassis arrangement () is also presented herein.

Chassis arrangement for an electrically powered wheelchair and an electrically powered wheelchair comprising the same

The present disclosure relates to a caster wheel assembly () for a wheelchair, comprising: a caster housing (), a central body () having a radially outwards extending flange (), which central body () is configured to be received by the caster housing (), a spindle shaft () configured to be rotationally locked relative to the central body (), a first bearing () having an inner bearing race () configured to be rotationally locked relative to the spindle shaft (), a friction member () configured to be rotationally locked relative to the caster housing (), and a resilient member () configured to be arranged between the flange () and the friction member (), and configured to provide a force between the flange () and the friction member () to thereby create friction torque between the caster housing () and the spindle shaft ().

Growing community of inventors

Matfors, Sweden

Erik Kalf