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Class Information
Number: 237
Name: Heating systems >
Description: Apparatus and processes for heating rooms, chambers, houses, and other enclosing structures, including combinations of two or more heat generators and combinations of a heat generator with means for distributing a fluid heated thereby.










Class Number Class Name No. of Patents
237/50

Air

37
237/55

Flue heated

170
237/53

Furnace

53
237/52

Stove

23
237/54

Upper-room drum

4
237/80

Antifreezing devices

80
237/2R

Automatic control

33
237/2A

Automatic heating systems with controls

274
237/3

Brooder and incubator

42
237/4

Water

2
237/5

Car

33
237/6

Steam

7
237/7

Combined radiator and boiler

24
237/11

Compressed air

11
237/2B

Heat source is a reverse cycle refrigerating system or heat pump

390
237/12

Processes

19
237/9R

Steam

19
237/9A

Automotive systems

1
237/10

Gas displaced

0
237/9B

With direct contact between products of combustion and the liquid to be vaporized

2
237/8R

Water

250
237/8A

Automatic heating systems (water) with controls

95
237/8D

Compact heating systems with controls

7
237/8B

Heating systems with high temperature boiling liquids

5
237/8C

With boiler by-pass valve control

40
237/14

Brooder and incubator

26
237/15

Water

3
237/16

Combined radiator and boiler

37
237/17

Fluid fuel

9
237/18

Solid fuel

3
237/19

Combined with water heater

206
237/12.1

Heat and power plants

108
237/12.4

Car

9
237/12.6

Air

2
237/12.7

Radiator

4
237/12.5

Smoke

0
237/12.8

Steam

2
237/12.2

Fire engine

0
237/12.3R

Vehicle

243
237/12.3A

The heating is effected by circulated air

327
237/12.3B

The heating is effected by circulated hot water

499
237/12.3C

The heating system includes a combustion type heater

207
237/70

Heat radiators

57
237/78R

Air moistener

22
237/78A

Casing

6
237/78C

From radiator valve

0
237/78B

Radiator wick

3
237/76

Ceramic

2
237/77

Foot warmer

5
237/79

Shields

33
237/73

Steam

6
237/74

Circuit

3
237/75

Heat accumulator

4
237/71

Water, steam

11
237/72

Injected

2
237/69

Heated floor

135
237/DIG.1

Inert gas

0
237/1R

Miscellaneous

338
237/1SL

Special liquid

10
237/13

Plants

27
237/81

Processes

45
237/67

Steam

43
237/68

Air discharge

4
237/28

Vehicle

32
237/45

Encased radiator

3
237/32

Fluid fuel

4
237/33

Radiator

1
237/44

Heat accumulator

8
237/43

Heated floor

5
237/40

Steam

2
237/41

Car boiler

0
237/42

Train steam

0
237/29

Stove

1
237/30

Air casing

2
237/31

Depending

0
237/34

Water

10
237/35

Car boiler

1
237/36

Fluid fuel

3
237/37

Train steam

0
237/38

Injected

0
237/39

Train steam

1
237/46

Ventilating

46
237/49

Enclosed radiator

7
237/48

Furnace

9
237/47

Stove

5
237/56

Water

80
237/59

Circulation

40
237/61

Auxiliary boiler

14
237/62

Boiler loop

4
237/60

Geyser boiler

9
237/63

Pump

40
237/64

Steam displacing

3
237/66

Expansion tanks

39
237/57

Fluid fuel

9
237/65

Pressure regulator

4
237/58

Steam

4
 
 
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