EP 0347904 B1 19920902 - MULTIPLE PRESSURE SWITCH
Title (en)
MULTIPLE PRESSURE SWITCH
Publication
Application
Priority
DE 3821425 A 19880624
Abstract (en)
[origin: EP0347904A2] A membrane (14), which is clamped in at its edge (16), has a flat centre field (18) as well as a rolling fold (20) arranged between the latter and its edge (16). Three switches (36, 36', 36") can be actuated by pressure acting on the membrane (14). For transmitting the actuation forces resulting from the pressure on the membrane (14) to coupling points (32, 32', 32") on one of the switches (36, 36', 36") in each case, a support plate (22) is provided. The centre field (18) of the membrane (14) can only be displaced to the edge (16) of the membrane (14) together with the support plate (22). The support plate (22) is supported at the coupling points (32, 32') of two switches (36, 36') so as to be tiltable in such a way that the active area of the membrane (14), defined by the centre field (18) and an adjoining part of the rolling fold (20), shifts towards the other of these two switches when one of these two switches (36, 36') is actuated. In this way it is achieved that these two switches (36, 36') reliably switch in a given order even if their switching pressures differ only slightly from one another. <IMAGE>
IPC 1-7
IPC 8 full level
H01H 35/24 (2006.01); H01H 35/26 (2006.01)
CPC (source: EP)
H01H 35/2664 (2013.01)
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
DE 3821425 C1 19890608; DE 58902189 D1 19921008; EP 0347904 A2 19891227; EP 0347904 A3 19910410; EP 0347904 B1 19920902; ES 2034514 T3 19930401
DOCDB simple family (application)
DE 3821425 A 19880624; DE 58902189 T 19890622; EP 89111369 A 19890622; ES 89111369 T 19890622