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Class Information
Number: 169
Name: Fire extinguishers >
Description: This class includes patents for apparatus and methods designed specifically for extinguishing fire and elements of such apparatus not classifiable in border existing classes; also apparatus capable of performing this function if designed to prevent fire by operating in anticipation of fire conditions.










Class Number Class Name No. of Patents
169/DIG.2

Ablative fluids

6
169/23

Alarms

83
169/48

Apparatus which isolates flames from non-burning area

187
169/49

With means to isolate fire from atmosphere and extinguish

80
169/50

Acted upon by operator in use

39
169/26

Automatic receptacles

138
169/27

Chemical mixing

22
169/28

Explosive

84
169/29

Mechanical discharge

15
169/19

Automatic valves

93
169/20

Pressure controlled

79
169/22

Differential area

26
169/21

Lever system

5
169/DIG.1

Floats

3
169/5

Fluid systems

90
169/6

Chemical pressure generating

9
169/7

Automatic

10
169/8

Pressure controlled

15
169/16

Distributing systems

268
169/17

Dry pipe

92
169/18

Hand controls

18
169/9

Gas-pressure discharge

153
169/11

Gas

81
169/12

Combustion products

38
169/10

Gravity

4
169/14

Plural source, mixing in transit

140
169/15

Stream impregnating

141
169/13

Pump supply

110
169/42

Fusible connections

131
169/91

Miscellaneous: e.g., blowers

41
169/51

Mount, cabinet or guard

143
169/52

Movable relative to fire

145
169/24

Fire engines

150
169/53

On air-borne vehicle

79
169/25

Water towers

25
169/30

Portable vessels

109
169/34

Buckets

4
169/71

Gas pressure

67
169/89

Discharge head

36
169/77

Power extinguishant

22
169/85

Pressurizing agent stored apart from agent

65
169/88

Lever or trigger operated to release gas

25
169/87

Vessel inverted to release gas

0
169/86

With means to prevent freezing of expanding gas

2
169/78

Produced by chemical mixing

8
169/83

Upon breaking internal container

4
169/79

Upon inversion of internal container

0
169/80

Upon inversion of vessel

1
169/81

Breaks reactant container

4
169/82

Reactant container closure released by gravity

0
169/84

Produced by combustion

28
169/72

With means facilitating total discharge

16
169/73

By collapsing chamber holding agent

19
169/76

With means permitting repeated discharge

12
169/75

With means preventing accidental discharge, relieving pressure, or indicating condition within vessel

54
169/74

With particular outlet structure

52
169/36

Grenades

42
169/33

Piston discharge

23
169/35

Tubes

14
169/43

Processes

110
169/46

Of extinguishing fire

427
169/47

By projecting extinguishant directly onto seat of fire

181
169/45

Of preventing fire

193
169/44

With mixing of extinguishing compounds

129
169/54

Special applications

245
169/56

Condition responsive control

149
169/59

Fusible cable

28
169/58

Having frangible extinguishant holder

70
169/57

Having fusible plug, support, or holder

117
169/60

Sensor, control and actuator

176
169/61

Electrical control

260
169/65

For cooking installation

91
169/64

For mine

41
169/63

For motion picture apparatus

2
169/69

For oil or gas well

79
169/55

For railway car heaters

3
169/66

For storage tank

89
169/67

Extinguisher having transport or erection means

26
169/68

With specific extinguishant applying means

54
169/62

For vehicles

246
169/70

With specific extinguishant applying means, or means for providing access to fire

164
169/37

Sprinkler heads

403
169/38

Collapsible strut

112
169/39

Compound

64
169/41

Direct support

86
169/40

Lever

46
169/90

Shut off valve

41
169/DIG.3

Trip mechanisms

16
 
 
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