US Patent Class 169
FIRE EXTINGUISHERS



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Current as of: June, 1999
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Products
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  DF  CLASS NOTES
43  DF  PROCESSES
44  DF  .~ With mixing of extinguishing compounds
45  DF  .~ Of preventing fire
46  DF  .~ Of extinguishing fire
47  DF  .~.~ By projecting extinguishant directly onto seat of fire
48  DF  APPARATUS WHICH ISOLATES FLAMES FROM NON-BURNING AREA
49  DF  .~ With means to isolate fire from atmosphere and extinguish
50  DF  .~.~ Acted upon by operator in use
51  DF  MOUNT, CABINET OR GUARD
52  DF  .~ Movable relative to fire
53  DF  .~.~ On air-borne vehicle
24  DF  .~.~ Fire engines
25  DF  .~.~ Water towers
54  DF  SPECIAL APPLICATIONS
55  DF  .~ For railway car heaters
56  DF  .~ Condition responsive control
57  DF  .~.~ Having fusible plug, support, or holder
58  DF  .~.~ Having frangible extinguishant holder
59  DF  .~.~ Fusible cable
60  DF  .~.~ Sensor, control and actuator
61  DF  .~.~.~ Electrical control
62  DF  .~ For vehicles
63  DF  .~ For motion picture apparatus
64  DF  .~ For mine
65  DF  .~ For cooking installation
66  DF  .~ For storage tank
67  DF  .~.~ Extinguisher having transport or erection means
68  DF  .~.~ With specific extinguishant applying means
69  DF  .~ For oil or gas well
70  DF  .~ With specific extinguishant applying means, or means for providing access to fire
5  DF  FLUID SYSTEMS
6  DF  .~ Chemical pressure generating
7  DF  .~.~ Automatic
8  DF  .~.~.~ Pressure controlled
9  DF  .~ Gas-pressure discharge
10  DF  .~ Gravity
11  DF  .~ Gas
12  DF  .~.~ Combustion products
13  DF  .~ Pump supply
14  DF  .~ Plural source, mixing in transit
15  DF  .~.~ Stream impregnating
16  DF  .~ Distributing systems
17  DF  .~.~ Dry pipe
18  DF  .~.~ Hand controls
19  DF  AUTOMATIC VALVES
20  DF  .~ Pressure controlled
21  DF  .~.~ Lever system
22  DF  .~.~ Differential area
23  DF  ALARMS
26  DF  AUTOMATIC RECEPTACLES
27  DF  .~ Chemical mixing
28  DF  .~ Explosive
29  DF  .~ Mechanical discharge
30  DF  PORTABLE VESSELS
71  DF  .~ Gas pressure
72  DF  .~.~ With means facilitating total discharge
73  DF  .~.~.~ By collapsing chamber holding agent
74  DF  .~.~ With particular outlet structure
75  DF  .~.~ With means preventing accidental discharge, relieving pressure, or indicating condition within vessel
76  DF  .~.~ With means permitting repeated discharge
77  DF  .~.~ Power extinguishant
78  DF  .~.~ Produced by chemical mixing
79  DF  .~.~.~ Upon inversion of internal container
80  DF  .~.~.~ Upon inversion of vessel
81  DF  .~.~.~.~ Breaks reactant container
82  DF  .~.~.~.~ Reactant container closure released by gravity
83  DF  .~.~.~ Upon breaking internal container
84  DF  .~.~ Produced by combustion
85  DF  .~.~ Pressurizing agent stored apart from agent
86  DF  .~.~.~ With means to prevent freezing of expanding gas
87  DF  .~.~.~ Vessel inverted to release gas
88  DF  .~.~.~ Lever or trigger operated to release gas
89  DF  .~.~ Discharge head
33  DF  .~ Piston discharge
34  DF  .~ Buckets
35  DF  .~ Tubes
36  DF  .~ Grenades
37  DF  SPRINKLER HEADS
90  DF  .~ Shut off valve
38  DF  .~ Collapsible strut
39  DF  .~.~ Compound
40  DF  .~ Lever
41  DF  .~ Direct support
42  DF  FUSIBLE CONNECTIONS
91  DF  MISCELLANEOUS: E.G., BLOWERS
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DIGESTS
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DIG 1  DD  Floats
DIG 2  DD  Ablative fluids
DIG 3  DD  Trip mechanisms