Control apparatus particularly adapted for handicapped persons

Details Control apparatus particularly adapted for handicapped persons Control apparatus particularly adapted for handicapped persons

1992-02-21

1994-01-25

Zazworsky, John

Communications: electrical

Digital comparator systems

70404, 70413, 341 21, G05B 103, G06F 704, E05B 6300

Patent

active

052819450

ABSTRACT:
A control apparatus which includes apparatus for storing a first digital code, apparatus for storing a second digital code, and apparatus for comparing the first and second digital codes, the apparatus for comparing including first and second generally dish shaped members that are dimensioned and configured for nesting relationship. In some forms of the invention the dish shaped members are each rotationally symmetrical. The first and second dish shaped members may each include a plurality of steps on the face thereof. At least one of the first and second dish shaped members includes a plurality of steps on the face thereof. The other of said first and second dish shaped members may includes a plurality of steps on the face thereof.

REFERENCES:
patent: 3987345 (1976-10-01), Kato
patent: 4022038 (1977-05-01), Miller
patent: 4392134 (1983-07-01), Lutz
patent: 4408192 (1983-10-01), Ward et al.
patent: 4838060 (1989-06-01), Hutzelaub
patent: 5006842 (1991-04-01), Tobol

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