US PATENT SUBCLASS 102 / 200
IGNITING DEVICES AND SYSTEMS

Current as of: June, 1999
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102 /   HD   AMMUNITION AND EXPLOSIVES

200IGNITING DEVICES AND SYSTEMS {15}
201  DF  .~> Laser or light initiated
202  DF  .~> Propellant ignitors
202.1  DF  .~> Accidental fuse ignition prevention means {2}
202.5  DF  .~> Electrical primer or ignitor {8}
204  DF  .~> Percussion primers or ignitors
205  DF  .~> Heat, friction, or chemical primers or ignitors
206  DF  .~> Ignition or detonation circuit {6}
221  DF  .~> Arming devices {2}
265  DF  .~> Multiple mode fuzes {2}
272  DF  .~> Impacting devices {3}
275.1  DF  .~> Fuse cord (e.g., blasting cord) {7}
275.9  DF  .~> Fuse
275.11  DF  .~> Initiating devices
275.12  DF  .~> Holders for fuse or fuse cord to blasting cartridge, igniting device, or detonator
276  DF  .~> Time controlled {2}

DEFINITION

Classification: 102/200

IGNITING DEVICES AND SYSTEMS:

(under the class definition) Subject matter for initiating the combustion or detonation of explosive or thermic compositions or charges.

(1) Note. The explosive or thermic compositions or charges of this subclass type are the same as those defined in the class definition of Class 149, Explosive and Thermic Compositions or Charges.

(2) Note. Illustrative of the devices and systems of this subclass type are missile and ordnance fuzes, both mechanical and electrical, and priming and igniting devices and systems not specifically provided for elsewhere in this class.

(3) Note. Systems, as used in this subclass and the subclasses indented hereunder, refer to a plurality of electrical, mechanical and/or explosive elements all acting in a pattern or sequence to cause detonation or combustion of a main explosive such as a war head or propellant. Typical of such systems is the type commonly referred to as a firing train.

SEE OR SEARCH THIS CLASS, SUBCLASS:

7, for fuses and ignitors, per se, for marine type drop bombs, specially designed for operation in water, e.g., those operated by water flow or by hydrostatic pressure.

7.4, for drop bombs having a target contact anticipator for controlling or operating an ignitor. 16+, for igniting devices for marine-type mines.

19.2, for igniting devices for mines other than the marine type involving the use of electricity, magnetic wave, or radiant energy.

27+, for igniting devices for blasting cartridges and devices.

45+, for primers for gun cartridges.

49.7, for ignitors for missile rocket motors.

SEE OR SEARCH CLASS

123, Internal-Combustion Engines,

143+, for ignition systems in internal-combustion engines.

149, Explosive and Thermic Compositions or Charges, for explosive compositions, per se, which may be used for igniting other explosives.

361, Electricity: Electrical Systems and Devices,

247+, for circuits, per se, for igniting explosives.

431, Combustion, appropriate subclasses for igniting devices used in combustion.