US PATENT SUBCLASS 126 / 99 R
HOT-AIR FURNACES

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

99 RHOT-AIR FURNACES {24}
100  DF  .~> Combined with cooking stove
101  DF  .~> Combined with boiler
110 R  DF  .~> Compressed air {6}
111  DF  .~> Double fire pot
116 R  DF  .~> Liquid or gaseous fuel {3}
117  DF  .~> Preliminary air heater
106  DF  .~> Internal air chamber
108  DF  .~> Secondary heating chamber horizontally arranged
109  DF  .~> Tubular air heater
107  DF  .~> Magazine
104 R  DF  .~> Horizontal combustion chamber {1}
102  DF  .~> Circular radiating drum
103  DF  .~> Downdraft
112  DF  .~> Feeding air
113  DF  .~> Air moisteners
114  DF  .~> Casings
115  DF  .~> Dust flue
105 R  DF  .~> Hot-air equalizers {1}
118  DF  .~> Radiating flanges
119  DF  .~> Joints
99 P  DF  .~> Pipeless
99 A  DF  .~> Tubular heater
99 C  DF  .~> Helical passages
99 D  DF  .~> Air baffles

Unofficial Alpha Subclasses: R P A C D

DEFINITION

Classification: 126/99

(under the class definition) Subject matter relating to furnaces which heat air in an inclosing case or jacket to be distributed to points remote from the furnace.

SEE OR SEARCH THIS CLASS, SUBCLASS:

6, for combined cooking and hot air stoves.

67+, for hot air stoves.

500+, for hot air fireplaces.

SEE OR SEARCH CLASS

432, Heating, 222+, for means heating air by mixing it with combustion products, and subclass 219 for a residual apparatus for heating a gaseous or liquid material.