Loading patent…
AssigneeVictor Comptometer Corporation
InventorsNicholas Kondur, Peter Scheuzger, Marshall S. Joseph
Estimating the term…
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.
A keyboard for selectively closing a plurality of normally open switch means, comprising a rigid cover member overlying said switch means and having aperture-defining means formed integrally therewith respectively aligned with individual said switch means, and a switch-operating module individually removably mounted in each said aperture-defining means, comprising a body insertable into the latter and having means effecting snap-fit engagement therewith, a key stem vertically slidable in said body and depressible when the latter is mounted in said cover member to close the associated said switch means, return spring means separate from and interposed between said key stem and said body for normally maintaining said key stem in raised position, and stop means positively limiting movements of said key stem relative to said body.
A switch-operating module removably mounted in a cover member of plastic molded to provide aperture-defining means including opposed shelves;
Dependencies are inferred from the claim text.