KEY PANELS AND KEY SELECTORS Russian patent published in 2006 - IPC H01H13/70 

FIELD: electrical engineering; key panel and keyboard manufacture.

SUBSTANCE: proposed key panel has elevated key sections, intermediate key sections, and key selectors disposed under both types of key sections. Each intermediate key section affords output signals of respective character using operative algorithm that responds to invocation of at least one adjacent elevated key section as well as to invocation of selector under intermediate key section. Key selectors electrically interconnect numerous selector contacts in ring contact zone.

EFFECT: enhanced reliability at instant connection of more than one contact.

42 cl, 23 dwg