Boots – shoes – and leggings
Patent
1980-10-21
1983-05-17
Chin, Gary
Boots, shoes, and leggings
364562, 377 24, G01B 526
Patent
active
043843395
ABSTRACT:
Apparatus for measuring strip material area comprises a length-meter, a breakage-sensor, and a strip cutter, all having outputs connected to inputs of an inhibit circuit, a frequency divider, and an output counter. The cutter has one input connected to the length-meter output and another connected to the breakage-sensor output. A two-position switch has one position connected to the inhibit unit output and a second position connected to an AND gate output having one input connected to the output of an overflow blocking unit, the other AND gate input connected to a reference frequency generator output and a count input of a controlled frequency divider having control inputs connected to intermediate memory counter outputs and to overflow blocking unit. The intermediate memory count input is connected to an input of a two-position switch; its clearing input is connected to a common clearing line. A reference frequency generator output is connected to count inputs of two controlled frequency dividers. Connected through NAND gates to the control inputs of one controlled frequency divider is a correction input unit. The NAND gates have common inputs connected to the second position of the second switch having a grounded switch arm. Outputs of the two frequency dividers are connected to a coincidence circuit through a time interval generator with control inputs connected to a width-setting unit. The coincidence circuit output is connected to the output counter wherein the clearing input is connected to the time interval generator clearing output.
REFERENCES:
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patent: 3710084 (1973-01-01), Slagley et al.
patent: 3721809 (1973-03-01), Strandberg, Jr. et al.
patent: 3916174 (1975-10-01), Moule
patent: 4058712 (1977-11-01), Bachman
patent: 4144575 (1979-03-01), Schwarz
patent: 4260877 (1981-04-01), Conway
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