EP 0268030 B1 19920624 - POTENTIOMETER OR ADJUSTABLE RESISTORCE
Title (en)
POTENTIOMETER OR ADJUSTABLE RESISTORCE
Publication
Application
Priority
DE 3639150 A 19861115
Abstract (en)
[origin: EP0268030A2] In a potentiometer, for reliability reasons it is necessary for the contact member, which interacts with the resistance track and can be driven by an operating member, to be supported such that it cannot rotate with respect to the resistance track. In order that the operating member can be rotated with respect to the contact member, known potentiometers have a joint between the contact member and the operating member. Such a joint is costly to manufacture. <??>In order to permit a rotational movement between the contact member and the operating member, without a joint having to be provided between these two parts, a permanent magnet (10) is arranged on the operating member, as shown in Fig. 1, which permanent magnet (10) interacts with a part (22) of the contact member (15, 16, 22) consisting of a ferro-magnetic material. In the case of a shifting movement of the operating member, the contact member (15, 16, 22) is driven by magnetic force without contact, i.e. is driven along the resistance track. <IMAGE>
IPC 1-7
IPC 8 full level
F15B 15/28 (2006.01); H01C 10/14 (2006.01); H01C 10/38 (2006.01)
CPC (source: EP US)
F15B 15/2853 (2013.01 - EP US); H01C 10/14 (2013.01 - EP US); H01C 10/38 (2013.01 - EP US)
Designated contracting state (EPC)
AT CH DE ES FR GB IT LI SE
DOCDB simple family (publication)
EP 0268030 A2 19880525; EP 0268030 A3 19891129; EP 0268030 B1 19920624; AT E77711 T1 19920715; DE 3639150 A1 19880519; DE 3780001 D1 19920730; US 4910491 A 19900320
DOCDB simple family (application)
EP 87112533 A 19870828; AT 87112533 T 19870828; DE 3639150 A 19861115; DE 3780001 T 19870828; US 11836387 A 19871106