Splash water protected keyboard

Details Splash water protected keyboard Splash water protected keyboard

1997-06-30

1998-09-22

Burr, Edgar S.

Typewriting machines

Key-board or key lever-actuating mechanism

Key lever or space-bar mounting structure

400472, B41J 2912

Patent

active

058104917

ABSTRACT:
In a splash-water protected keyboard having a contact foil arranged in a housing and a rubber mat with switch domes disposed over the contact foil and keys with contact stems disposed in the housing over the switch domes for actuating the contacts in the contact foil, the rubber mat has upwardly extending circumferential projections such that the rubber mat forms a trough structure which is provided at least at one edge with discharge spouts extending into openings in the housing bottom plate for discharging any liquid collected in the trough structure.

REFERENCES:
patent: 5172805 (1992-12-01), Gumb
patent: 5180237 (1993-01-01), Chen
patent: 5421659 (1995-06-01), Liang
patent: 5494363 (1996-02-01), Hochgesang
patent: 5642950 (1997-07-01), Hochgesang et al.
patent: 5674018 (1997-10-01), Kaufman et al.
patent: 5681122 (1997-10-01), Burke
patent: 5697718 (1997-12-01), Erler et al.

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