Grid resistor and improved grid element therefor

Details Grid resistor and improved grid element therefor Grid resistor and improved grid element therefor

1984-09-28

1986-12-16

Broome, Harold

Electrical resistors

With cooling gas or liquid circulation

Ventilated helical or zigzag element

219552, 338235, 338280, 338293, H01C 108

Patent

active

046300244

ABSTRACT:
A grid resistor assembly includes a plurality of flat grid resistor elements. Each element includes at least one open-ended loop having side portions and a tip end portion connected together through intervening strip portions of narrower width than the side portions to improve current carrying capacity and to provide for more even heating and heat dissipation. An assembly of such elements is particularly used as a resistor box in an electric, motor-driven, transit vehicle, such as a subway car, and is provided in a predetermined space envelope to perform predetermined electrical parameters.

REFERENCES:
patent: 723788 (1903-03-01), Wales
patent: 1505072 (1924-08-01), Walmsley
patent: 2128222 (1938-08-01), DuBois
patent: 3212045 (1965-10-01), Weyenberg
Post Glover "Nonbreakable Steel Grid Resistors", Bulletin No. 500R.
Post Glover "Nonbreakable Steel Grid Resistors" Bulletin No. 500.
Post Glover Resistors, Inc. "Stamped Grid Resistors vs. Wound Wire Resistors".

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