Electronic keyboard
June 17, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3699294 3879602 3909564 Push button body for a push-button switch providing snap-action of the switch Keyboard assembly with overlapped flexible printed circuit cable switch Low silhouette keyboard Opto-electronical switching device, specially for motor vehicles Key mechanism having a snap action Keyboard switch assembly Illuminated push-button switch assembly InventorsAssigneeApplicationNo. 07/209164 filed on 06/17/1988US Classes:200/5A, With independent operators200/345, Cap/stem and stem/housing details200/517, Including additional actuator200/532, Leaf spring contact235/145R, KEYBOARDS400/479Via electrical component (e.g., switch, stylus, etc.) in or with key-boardExaminersPrimary: Scott, J. R.International ClassesH01H 13/70 (20060101)H01H 13/705 (20060101) AbstractA full sized electronic keyboard with full travel keybuttons provides switches for controlling an electronic typewriter or for controlling other devices. The keyboard has a structure designed for reducing part count and switch component part size and for simplifying assembly to minimize manufacturing cost. The structure has integral one piece parts for accommodating several keybutton actions. The integral one piece parts include a main frame, a sheet steel spring, a rubber dome switch member, and a printed circuit switch panel. | |
