Boots – shoes – and leggings
Patent
1978-05-05
1979-05-29
Ruggiero, Joseph F.
Boots, shoes, and leggings
264 404, 264 407, 364473, 364563, 364567, 425141, G06F 1546
Patent
active
041569130
ABSTRACT:
The thickness of a cut length of a continuously extruded elastomer is controlled by sampling the weight of a section of the continuous extrusion at a running-weigh-scale each second; computing one-minute averages of the running-weigh-scale samples and storing "A" to "n" of the averages where "A" is the newest and "n" is the oldest stored average; sampling the extruder motor power draw each second; computing one-minute averages of the power draw and storing "B" to "m" of the averages where "B" is the newest and "m" is the oldest stored average; comparing the newest to the oldest power draw average to obtain a difference between the two and multiplying the difference by a constant indicative of the type of elastomeric material being processed through the extruder to obtain a power-draw deviation signal; sampling the weight of a cut length of material extrusion at a check-weigh-scale; comparing the check-weigh-scale value to the oldest "n" stored running-weigh-scale one-minute average and to the power draw deviation to obtain a targeted running-weigh-scale average; comprising the targeted running-weigh-scale average to the newest "A" stored running-weigh-scale one-minute average to obtain a deviation from the targeted value if one exists; and converting the deviation from the targeted running-weigh-scale value to a control signal for increasing or decreasing the speed of a take-away belt positioned at the extruder exit orifice to vary the thickness of the extrusion in accordance with the deviation control signal and the speed of the belt.
REFERENCES:
patent: 3496344 (1970-02-01), Chope
patent: 3844870 (1974-10-01), Donoghue et al.
patent: 3852578 (1974-12-01), Rice
patent: 3875383 (1975-04-01), Somerville et al.
patent: 3890078 (1975-06-01), Straumanis
patent: 3930922 (1976-01-01), Donoghue et al.
Germain L. A.
Ronyak D. M.
Ruggiero Joseph F.
The Goodyear Tire & Rubber Company
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