Guiding device for visually handicapped person

Details Guiding device for visually handicapped person Guiding device for visually handicapped person

1990-06-18

1991-07-16

Weldon, Ulysses

Communications: electrical

Continuously variable indicating

With meter reading

320 49, 340825690, 340825720, G08C 1900

Patent

active

050328360

ABSTRACT:
A guide device for visually handicapped person which has a portable unit and a position indicator unit. The portable unit is carried by the visually handicapped person and includes a radio frequency signal oscillator. The position indicator unit is disposed to a desired place and includes a radio frequency signal receiver and a loud speaker.

REFERENCES:
patent: 3225265 (1965-12-01), Krause et al.
patent: 3550105 (1970-12-01), DeCola et al.
patent: 3795896 (1974-03-01), Isaacs
patent: 4191948 (1980-03-01), Stockdale
patent: 4232308 (1980-11-01), Lee et al.
patent: 4591835 (1986-05-01), Sharp
patent: 4804943 (1989-02-01), Soleimani

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