Patent ID: 8186695
Filing Date: 2012-05-29
Classification: A61G

Abstract:
1. A wheelchair comprising a chassis, which has a lower chassis section, an upper chassis section and means pivotally connecting the upper and lower chassis sections, such that the upper chassis section can pivot in relation to the lower chassis section about a substantially horizontal first axis; where said lower chassis section comprises two substantially parallel load carrying members of the lower chassis section, oriented in a direction parallel to an intended travelling direction of the wheelchair; where the two substantially parallel load carrying members are spaced in a direction perpendicular to the travelling direction by at least one transverse member which intersects each of the load carrying members; means for detachably mounting rear wheels where the at least one transverse member intersects each of the load carrying members; and where close to, or as a part of, the means pivotally connecting the upper and lower chassis sections, means for attaching front wheels are provided, said means for attaching the front wheels being pivotable about vertical axles; means for slidingly attaching a seat in a slidable and pivotable manner to the upper chassis section said means for slidingly attaching the seat further comprising means for pivoting the seat about a second horizontal axis, wherein the means for slidingly attaching the seat in a slidable and pivotable manner to the upper chassis section comprises two separate means; a first means for pivoting the seat, comprising a disc-shaped member to which a pivotal connection to the seat is provided such that the seating part and a backrest of the seat can pivot independently, and that the disc-shaped member is connected by an attachment arm to the upper chassis section; a second means for sliding the seat comprising a sliding axle adjacent both sides of the seat parallel and fastened to load carrying members of the upper chassis section, and a sliding body arranged around said sliding axle and connected to the seat, and a sliding dampening mechanism comprising a tooth rack arranged adjacent the sliding axle, cooperating with a loaded gearwheel arranged in the sliding body; wherein the means for slidingly attaching the seat in a slidable and pivotable manner to the upper chassis section cooperate such that when the upper chassis section is pivoted relative to the lower chassis section about said horizontal first axis, the means for slidingly attaching the seat in a slidable and pivotable manner correspondingly compensates by a sliding/pivoting movement such that an orientation of the seat's seating surface is maintained.