Method for making a high current fiber brush collector

Details Method for making a high current fiber brush collector Method for making a high current fiber brush collector

1985-05-02

1986-05-13

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

29826, 228238, 310219, 310242, 310251, H01R 4312

Patent

active

045877238

ABSTRACT:
An axial-type homopolar motor having high density, high current fiber brush ollectors affording efficient, low contact resistance and low operating temperatures. The collectors include a ring of concentric rows of brushes in equally spaced beveled holes soldered in place using a fixture for heating the ring to just below the solder melting point and a soldering iron for the local application of additional heat at each brush. Prior to soldering, an oxide film is formed on the surfaces of the brushes and ring, and the bevels are burnished to form a "wetting" surface. Flux applied with the solder at each bevel removes to an effective soldering depth the oxide film on the brushes and the holes.

REFERENCES:
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patent: 3382387 (1968-05-01), Marshall
patent: 3668451 (1972-06-01), McNab
patent: 4071795 (1978-01-01), Dobbing et al.
patent: 4277708 (1981-07-01), McNab et al.
patent: 4306169 (1981-12-01), Diepers
patent: 4327265 (1982-04-01), Edinger et al.
patent: 4358699 (1982-11-01), Wilsdorf

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