Apparatus for making miniature layer resistors on insulating chi

Details Apparatus for making miniature layer resistors on insulating chi Apparatus for making miniature layer resistors on insulating chi

1973-10-25

1976-06-08

McIntosh, John P.

Coating apparatus

With vacuum or fluid pressure chamber

118 7, 118 11, 118410, B05C 502, B05C 1110

Patent

active

039615995

ABSTRACT:
A capsule of ink-like paste is dispensed in a rectangular layer a few mils thick and a few hundreths of an inch in width and breadth on an insulating chip by a piston and nozzle assembly. The piston is driven by a stepping motor-screw assembly to dispense an accurately metered amount of the ink to establish a resistance value. The nozzle and chip are relatively moved by a stepping motor-screw assembly. An electronic control circuit operates the two stepping motors simultaneously to lay down resistors.

REFERENCES:
patent: 2412295 (1946-12-01), Shaffer, Jr.
patent: 2960060 (1960-11-01), Chatterton
patent: 2981211 (1961-04-01), Emerzian
patent: 3088434 (1963-05-01), Sprague et al.
patent: 3356071 (1967-12-01), Brown
patent: 3502752 (1970-03-01), Brown
patent: 3521599 (1970-07-01), Bentzinger
patent: 3531615 (1970-09-01), Zammit

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