Multilane keyboard for inch calculators

Details Multilane keyboard for inch calculators Multilane keyboard for inch calculators

1992-10-13

1993-12-21

Mai, Tan V.

Boots, shoes, and leggings

36470907, 36471505, G06F 300

Patent

active

052726533

ABSTRACT:
The main difficulty in working with the U.S. length units is in adding or subtracting dimensions and especially when converting them into metric, both in making and in using drawings for general construction and machine technology. These are the problems and the areas Multilane is intended for as an inch keyboard to be incorporated in any functionally adaptable calculator. The resulted professional tool is proposed for convenience in two embodiments: the Nine-Lane with nine built-in units from 1 Ft to 1/128" range and the Six-Lane with six built-in units from 1 Ft to 1/16" range. Taking advantage of their invariability, the units are removed from the keys and written in permanent characters on calculator housing. The result: no keys and no keystrokes for units and consequently Multilane makes use of only 40% of the number of keystrokes required by a conventional inch keyboard for the same entries. The most valuable contribution of this invention is expected in the large amount of conversions for the transition to the metric system by the use of its dual inch-metric system of display.

REFERENCES:
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patent: 4100603 (1978-07-01), Boyd
patent: 4463438 (1984-07-01), Zatezalo et al.
patent: 4488250 (1984-12-01), Lipsey et al.
patent: 4545022 (1985-10-01), Hughins
patent: 4744044 (1988-05-01), Stover et al.
patent: 4872112 (1989-10-01), Hungerford
patent: 5138566 (1992-08-01), Comforti

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