US PATENT SUBCLASS 126 / 691
.~.~.~ Elliptical


Current as of: June, 1999
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126 /   HD   STOVES AND FURNACES

569  DF  SOLAR HEAT COLLECTOR {18}
684  DF  .~ With concentrating reflector {5}
688  DF  .~.~ Spot focus {3}
691.~.~.~ Elliptical


DEFINITION

Classification: 126/691

Elliptical:

(under subclass 688) Apparatus wherein the first surface is shaped like a closed plane curve generated by a point so moving that its distance from a fixed point divided by its distance from a fixed line is a positive constant less than one. [figure] [caption]A solar dish concentrator is provided having a rotationally symmetrical elliptical shape for focusing a uniform flux density of solar radiation on a receiver. The solar flux pattern reflected to the receiver is evenly distributed over the four quadrants of the receiver without containing any hot spots.