Boots – shoes – and leggings
Patent
1980-07-02
1982-11-23
Gruber, Felix D.
Boots, shoes, and leggings
328133, 340347SY, 34087018, 364815, G06G 722, G01B 730, H03D 1300
Patent
active
043608892
ABSTRACT:
A circuit for indicating angular position of a rotary member comprising a resolver including an amplitude stabilized sine-cosine generator coupled to quadrature windings of the resolver for providing a d.c. signal which varies as a linear function of the position of a rotatable member coupled to the resolver. The d.c. signal is fed to a plurality of comparators for comparing such angular position to a plurality of predetermined angular set points. The comparators are coupled to a priority encoder for indicating angular position of the rotary member. The encoder includes a switch array and a plurality of exclusive-OR gates for programming the encoder to provide a zero output at an arbitrary position of the rotary member. A digital voltmeter calibrated in angles of member rotation is coupled through a plurality of momentary contact push-button switches for normally receiving the d.c. signal indicative of angular rotation, and for alternatively and selectively receiving a signal indicative of a selected one of the set points for facilitating set point adjustment.
REFERENCES:
patent: 3548321 (1970-12-01), Duquesne
patent: 3555541 (1971-01-01), Egerton et al.
patent: 3646455 (1972-02-01), Coccagna
patent: 3786333 (1974-01-01), Sommeria
patent: 3803567 (1974-04-01), Pezzlo et al.
patent: 3825738 (1974-07-01), Blaschke et al.
patent: 3872388 (1975-03-01), James
patent: 4246497 (1981-01-01), Lawson et al.
F. Jos. Lamb Company
Gruber Felix D.
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