Resistor grid assembly having "U" bend resistor elements

Details Resistor grid assembly having "U" bend resistor elements Resistor grid assembly having "U" bend resistor elements

1993-01-13

1994-04-19

Lateef, Marvin M.

Electrical resistors

Ribbon resistance element bent or curved on flat side

Zigzag or sinuous

338281, 338283, 338284, H01C 300

Patent

active

053049780

ABSTRACT:
A heat dissipating fabricated resistor grid for the dynamic braking of electric motors has a zigzag resistor supported by insulating members within a frame. The zigzag resistor is made up of a plurality of resistor elements formed from sheet metal, each element containing at least one "U" shaped bend, that are connected by welded joints between the legs of adjacent resistor elements. The resistor elements may be embossed to stiffen them. Various types of clips may be utilized to hold the tabs and the resistor elements together to facilitate welding and the clips are welded to the other components and become part of the zigzag resistor. Various types of connecting joints are provided to connect the zigzag resistor to the insulating members. Various types of securing devices are provided to secure the insulating members to a supporting metal frame.

REFERENCES:
patent: 2969516 (1961-01-01), Du Bois
patent: 3697923 (1972-10-01), Griffes
patent: 4100526 (1978-07-01), Kirilloff et al.
patent: 4553126 (1985-11-01), Brandstater et al.
patent: 4651124 (1987-03-01), Kirilloff et al.
patent: 4651125 (1987-03-01), Harkness
patent: 4654627 (1987-03-01), Harkness
patent: 5045831 (1991-09-01), Kirilloff et al.
patent: 5049852 (1991-09-01), Cummins et al.
patent: 5068637 (1991-11-01), Bayer
patent: 5159310 (1992-10-01), Cummins et al.

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