EP 0042131 B1 19850116 - BANK OF ELECTRIC KEY SWITCHES
Title (en)
BANK OF ELECTRIC KEY SWITCHES
Publication
Application
Priority
- DE 8016058 U 19800618
- US 27031281 A 19810604
Abstract (en)
[origin: EP0042131A1] 1. Electric bank of key contacts with the key contacts being arranged in a basic lattice of rectangular, preferably square fields, and with a cover plate (11) having openings (15) through which the key buttons (13) of the key contacts project to the service side, characterized in that said button openings (15) in the cover plate (11) and the cross sections of the key buttons (13) have the shape of a circular segment, an elliptical segment or a similarly shaped segment, and that the marking of the indifidual buttons is arranged by providing corresponding characters (0-9, S, M, U, L) on the cover plate (11) in the complementary segment of said circular and elliptical segment respectively.
IPC 1-7
IPC 8 full level
H01H 13/14 (2006.01); H01H 13/12 (2006.01); H01H 13/70 (2006.01)
CPC (source: EP)
H01H 13/70 (2013.01)
Designated contracting state (EPC)
CH DE FR GB LI NL
DOCDB simple family (publication)
EP 0042131 A1 19811223; EP 0042131 B1 19850116; DE 8016058 U1 19800925; JP S5725626 A 19820210; US 4420666 A 19831213
DOCDB simple family (application)
EP 81104409 A 19810609; DE 8016058 U 19800618; JP 9452281 A 19810618; US 27031281 A 19810604