EP 0100936 B1 19891206 - PUSH BUTTON SWITCH
Title (en)
PUSH BUTTON SWITCH
Publication
Application
Priority
DE 3229465 A 19820806
Abstract (en)
[origin: US4467160A] A low profile switch key has a base which slidingly supports a pushbutton. The pushbutton is slidingly engaged with a plunger body by a lost motion connection. The plunger body carries cams which control the flexing of contactors to make and break conductive connections with adjacent stationary contacts. A coil spring biases the pushbutton upwardly to its rest position. The sliding lost motion between the pushbutton and plunger body allows the pushbutton to slide by itself over an initial pretravel interval when it is pressed. At the end of the pretravel interval, the pushbutton strikes the plunger body and carries the body downward to complete the key stroke. The plunger body resists sliding movement and therefore provides a perceptible pressure point which indicates actuation of the switch. The stationary contacts and associated overlying cams are interlocked when the pushbutton is depressed to provide a relatively low switch profile with respect to the length of the key stroke.
IPC 1-7
IPC 8 full level
H01H 13/12 (2006.01); H01H 13/20 (2006.01); H01H 13/52 (2006.01)
CPC (source: EP KR US)
H01H 13/00 (2013.01 - KR); H01H 13/12 (2013.01 - EP US); H01H 15/102 (2013.01 - EP US); H01H 2001/0005 (2013.01 - EP US)
Designated contracting state (EPC)
AT CH FR GB IT LI SE
DOCDB simple family (publication)
EP 0100936 A2 19840222; EP 0100936 A3 19870107; EP 0100936 B1 19891206; AT E48494 T1 19891215; DE 3229465 A1 19840209; DE 3229465 C2 19881201; JP H0447932 B2 19920805; JP S59146113 A 19840821; KR 840005906 A 19841119; KR 890005313 B1 19891220; US 4467160 A 19840821
DOCDB simple family (application)
EP 83107108 A 19830720; AT 83107108 T 19830720; DE 3229465 A 19820806; JP 14237683 A 19830803; KR 830003646 A 19830804; US 51292783 A 19830712