Boots – shoes – and leggings
Patent
1980-06-03
1983-06-07
Ruggiero, Joseph F.
Boots, shoes, and leggings
126422, 422 62, 422110, 364164, 364172, G05B 1300, F24J 302
Patent
active
043874223
ABSTRACT:
A control system for operating process controller means to initiate corrective action to maintain a selected process condition in a selected range including first sensor means to sense the process condition and provide a first condition output signal, a second sensor means to sense a second condition which affects the process condition to provide a second condition output signal reflective of the second condition, amplifier means to selectively amplify the process condition output signal and provide a modified process condition output signal, summing means to selectively sum the process condition output signal and the second condition output signal and provide a reference signal, comparator means to compare the modified process condition output signal and the reference signal to provide a first comparator output signal when the modified process condition output signal exceeds the reference signal and to provide a second output signal when the reference signal exceeds the modified process condition output signal, operator means to selectively activate the process controller means in response to the first and second signals to modify the process condition.
REFERENCES:
patent: 3759820 (1973-09-01), Boyd
patent: 3940593 (1976-02-01), Bleak et al.
patent: 4008386 (1977-02-01), Ross
patent: 4126122 (1978-11-01), Bross
patent: 4257395 (1981-03-01), Wieder
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