US PATENT SUBCLASS 126 / 653
.~.~.~.~ Sealed chamber between enclosure and absorber contains vacuum promoter (e.g., getter)

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

569  DF  SOLAR HEAT COLLECTOR {18}
634  DF  .~ With means to convey fluent medium through collector {7}
651  DF  .~.~ Conduit absorber structure {9}
652  DF  .~.~.~ Surrounded by transparent enclosure {5}
653.~.~.~.~ Sealed chamber between enclosure and absorber contains vacuum promoter (e.g., getter)

DEFINITION

Classification: 126/653

Sealed chamber between enclosure and absorber contains vacuum promoter (e.g., getter):

(under subclass 652) Apparatus wherein a negative pressure exists in a space between an enclosure and an absorber conduit and wherein a substance is added to enhance the negative pressure.