Coating processes – Measuring – testing – or indicating – Thickness or uniformity of thickness determined
Patent
1984-04-06
1986-05-06
Bueker, Richard
Coating processes
Measuring, testing, or indicating
Thickness or uniformity of thickness determined
427117, 427120, B05D 118, B05D 720
Patent
active
045871337
ABSTRACT:
In providing a dried insulation layer upon conductor, a covering fluid layer is initially provided by a process and apparatus in which the layer is formed from composite material comprising magnetically permeable particles homogeneously mixed with a fluid carrier. The fluid layer is formed by passing the conductor through a reservoir of the material and then vertically through a die orifice. The reservoir of fluid applies pressure at the die orifice and this pressure is adjustable to vary the rate at which the material passes through the orifice and thus varies the diameter. This pressure is controllable by adjusting the height of the reservoir above a die orifice or by adjusting gas pressure acting downwardly upon the material. The diameter of the layer is advantageously measured after it is dried and variation in measured diameter from that desired effects a change in pressure to alter the diameter towards that desired. The diameter of the layer may, however, be measured with the layer in fluid form.
REFERENCES:
patent: 4079192 (1978-03-01), Josse
patent: 4165957 (1979-08-01), Kertscher et al.
patent: 4370355 (1983-01-01), Niesse
Manders Steven D.
Shannon Michael A.
Austin R. J.
Bueker Richard
Northern Telecom Limited
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