Patent ID: 8632129
Filing Date: 2014-01-21
Classification: A47C,A61G

Abstract:
1. Backrest for supporting a back of a seated person, which backrest is intended and adapted to form part of an article of seating furniture, a seat for a means of transport, or a wheelchair, characterized in that the backrest consists of two parts, that is: a carrier has three degrees of freedom in a vertical plane, perpendicularly of a main plane of the backrest parts, relative to a frame tube, i.e. two degrees of freedom of translation corresponding to height and depth, and one degree of freedom of rotation around a horizontal rotation axis; relative to the carrier the lower backrest part has three degrees of freedom in a vertical plane perpendicularly of the main plane of the backrest parts, i.e. two degrees of freedom of translation corresponding to height and depth, and one degree of freedom of rotation around a horizontal rotation axis; relative to the carrier the upper backrest part has one degree of freedom in a vertical plane perpendicularly of the main plane of the backrest parts, i.e. rotation around a horizontal rotation axis; adjusting means are present for adjusting a spatial position of each of the backrest parts and the carrier to a chosen spatial position; and locking means are present for fixing the carrier and each of the backrest parts in the chosen spatial position; wherein the lower backrest part comprises a first substantially rigid plate extending continuously from a left side to a right side of the carrier; and the upper backrest part comprises a second substantially rigid plate extending continuously from the left side to the right side of the carrier.