Annular resistor
AssigneeCutler-Hammer, Inc.
InventorWilliam R. Luy
Life of this patent
Estimating the term…
Abstract
An annular resistor, suitable for use in a diesel electric locomotive dynamic braking system and the like, having a supporting frame including spaced inner and outer annular frame portions and a continuous resistance ribbon having a plurality of bent-back radial extensions therebetween and in electrical isolation therefrom. U-shaped folds of the ribbon are mounted on pin supports allowing contraction and expansion of the ribbon. The pin supports are mounted to insulator blocks which may be selectively positioned on the frame, when two or more are stacked, to vary ribbon alignment and hence convective cooling. The resistor is comprised of severally replaceable identical component quadrants.
Claims21
A resistor comprising in combination:
- a supporting frame having inner and outer annular portions and portions holding them in spaced apart concentric relationship;
- insulating means attached to the opposing faces of said inner and outer annular portions;
- a reflexed resistance ribbon means having inner and outer U-shaped bends in proximity to said insulating means and segments connecting and arranged in a radial relation between said inner and outer bends;
- support means providing individual support for each of said bends with respect to said insulating means to keep said ribbon means within the annulus defined by opposing faces of said insulating means;
- and
- terminal means connected to said ribbon means for connecting the latter to a source of electrical current.
A resistor comprising in combination:
- a supporting frame having inner and outer annular portions and portions holding them in spaced apart concentric relationship;
- insulating means attached to the opposing faces of said inner and outer annular portions;
- a reflexed resistance ribbon means having inner and outer U-shaped bends in proximity to said insulating means and segments connecting and arranged in a radial relation between said inner and outer bends;
- support means attached to said insulating means and providing individual support for each of said bends;
- and
- terminal means connected to said ribbon means for connecting the latter to a source of electrical current.
An annular resistor assembly comprising:
- a plurality of like, arcuate inner and outer spaced frame members connected at their ends by a pair of straight members to form a segment of an annulus;
- insulators secured to the opposing faces of said inner and outer spaced frame members;
- a reflexed resistance ribbon means having inner and outer U-shaped bends in proximity to said insulators and segments connecting and arranged in a radial relation between said inner and outer bends;
- support means secured to said insulators and providing individual support for each of said bends;
- and
- terminal means connected to said ribbon means for connecting the latter to a source of electrical current.
Dependencies are inferred from the claim text.