Peter R Scheuzger

US Patent:

39938840, Nov 23, 1976

Filed:

Sep 15, 1972

Appl. No.:

5/289449

Inventors:

Nicholas Kondur - Rolling Meadows IL
Peter Scheuzger - Highland Park IL
Marshall S. Joseph - Chicago IL

Assignee:

Victor Comptometer Corporation - Chicago IL

International Classification:

H01H 312
H01H 900
H01H 1300

US Classification:

200295

Abstract:

Universal keyboard with individually removable switch modules each adapted particularly for use with a printed circuit switch, although also adapted to close or actuate other types of switch contacts, which has maximum reliability at minimum cost, satisfies the "best feel" tactile responses desired in a keyboard, while fully protecting the module components and the electrical conducting members against any excessive finger depression impact forces, assures uniformity of forces being applied to switch contacts regardless of variations in forces which may be applied to the key buttons or stems, reduces electric contact bounce, and maximizes the time the switch contacts are held closed during a key stroke.