Electrical resistors – With heat dissipating projections
Patent
1980-02-11
1982-11-16
Albritton, C. L.
Electrical resistors
With heat dissipating projections
303 20, 338280, 338316, 338319, H01C 108
Patent
active
043597106
ABSTRACT:
An improved annular resistor, suitable for use in a diesel electric locomotive dynamic braking system and similar applications comprising an assembly of similar arcuate segments. Each resistor segment has a supporting frame (11, 13) and a continuous resistance ribbon (53, 55, 57, 59) having a plurality of reflexed radial extensions between the two parts of the frame, electrically isolated from the frame. To allow expansion and contraction of the ribbon, U-shaped folds of the ribbon are mounted on pin supports (51). The pin supports are mounted to insulator blocks (27, 29, 37, 39), and are set so as to position the ribbons in a zig-zag or chevron pattern, in order to enhance cooling and improve the flow of air over the ribbon surfaces. Three terminals (67, 73, 75) are provided on each segment to allow part of the resistance of each segment to be removed from the circuit.
REFERENCES:
patent: 2875310 (1959-02-01), Schoch
patent: 3237142 (1966-02-01), Nuss
patent: 3697923 (1972-10-01), Griffes
patent: 4051452 (1977-09-01), Luy
patent: 4146868 (1979-03-01), Kirilloff et al.
Albritton C. L.
Eaton Corporation
Grace C. H.
Sajovec F. M.
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