EP 0391759 B1 19930224 - DEVICE FOR ADJUSTING THE TENSION OF SUPPORTING SPRINGS FOR A SEAT CUSHION
Title (en)
DEVICE FOR ADJUSTING THE TENSION OF SUPPORTING SPRINGS FOR A SEAT CUSHION
Publication
Application
Priority
FR 8904397 A 19890404
Abstract (en)
[origin: EP0391759A1] Device for adjusting the tension of supporting springs for a seat, constituted by a spring layer (6, 7) whose tension is adjustable disposed between two opposite elements (3, 4) of a frame (1), characterised in that the spring layer (6, 7) is connected to one (3 or 4) of the elements of the frame by a shape memory material (10) for the purpose of obtaining an increase in tension of the spring layer when it is taken, by heating, to a certain temperature, in association with a locking device (13), in particular for the purpose of retaining the said increase in tension when the said heating is removed. <IMAGE>
IPC 1-7
IPC 8 full level
A47C 7/35 (2006.01)
CPC (source: EP)
A47C 7/30 (2013.01)
Designated contracting state (EPC)
DE ES GB IT
DOCDB simple family (publication)
EP 0391759 A1 19901010; EP 0391759 B1 19930224; DE 69000948 D1 19930401; DE 69000948 T2 19930729; ES 2038042 T3 19930701; FR 2644996 A1 19901005; FR 2644996 B1 19910607
DOCDB simple family (application)
EP 90400752 A 19900320; DE 69000948 T 19900320; ES 90400752 T 19900320; FR 8904397 A 19890404