WebCPC CPC COOPERATIVE PATENT CLASSIFICATION

F42D　BLASTING (fuses, e.g. fuse cords, C06C 5/00;{for obtaining fluid from wells E21B 43/00; for mining or quarring E21C 37/00; for making tunnels or galleries E21D 9/006}; cartridges F42B 3/00)

F42D 1/00 Blasting methods or apparatus, e.g. loading or tamping

F42D 1/02 ・Arranging blasting cartridges to form an assembly (adaptation of blasting cartridges therefor F42B 3/02)

F42D 1/04 ・Arrangements for ignition {(ignition systems for shaped charge perforators E21B 43/1185; ignition devices for seismic energy generators G01V 1/06)}

F42D 1/041 ・・{Tools for adapting cartridges for the mounting of detonators (Cartridges specially adapted for the mounting of detonators F42B 3/26)}

F42D 1/042 ・・{Logic explosive circuits, e.g. with explosive diodes}

F42D 1/043 ・・{Connectors for detonating cords and ignition tubes, e.g. Nonel tubes (mounting of detonators in blasting cartridges F42B 3/26)}

F42D 1/045 ・・Arrangements for electric ignition (dynamo-electric generators H02K)

F42D 1/05 ・・・Electric circuits for blasting

F42D 1/055 ・・・・specially adapted for firing multiple charges with a time delay

F42D 1/06 ・・Relative timing of multiple charges ({F42D 1/043 and}F42D 1/055 take precedence)

F42D 1/08 ・Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor

F42D 1/10 ・・Feeding explosives in granular or slurry form; Feeding explosives by pneumatic or hydraulic pressure

F42D 1/12 ・・Feeding tamping material by pneumatic or hydraulic pressure

F42D 1/14 ・・Hand-operated tamping or loading

F42D 1/16 ・・・Tamping tools

F42D 1/18 ・・Plugs for boreholes

F42D 1/20 ・・Tamping cartridges, i.e. cartridges containing tamping material (flexible or deformable blasting cartridges F42B 3/087)

F42D 1/22 ・・Methods for holding or positioning for blasting cartridges or tamping cartridges

F42D 1/24 ・・characterised by the tamping material

F42D 1/26 ・・・Tamping with foaming agents

F42D 1/28 ・・・Tamping with gelling agents

F42D 3/00 Particular applications of blasting techniques {explosive welding B23K 20/08; explosive bolts or actuators F42B 3/00D; explosive valves F16K 13/06; cutting devices actuated by explosion B23D 15/14B; pyrotechnical actuators F15B 15/19; switching devices actuated by explosion H01H 39/00}

F42D 3/02 ・for demolition of tall structures, e.g. chimney stacks

F42D 3/04 ・for rock blasting

F42D 3/06 ・for seismic purposes

F42D 5/00 Safety arrangements

F42D 5/02 ・Locating undetonated charges

F42D 5/04 ・Rendering explosive charges harmless, e.g. destroying ammunition ({F42B 39/14 and F42B 39/20 take precedence}; extracting primers, dismantling ammunition F42B 33/04, F42B 33/06; {chemical deactivating of explosives C06B 21/0091}); Rendering detonation of explosive charges harmless

F42D 5/045 ・・Detonation-wave absorbing or damping means

F42D 5/05 ・・・Blasting mats

F42D 5/055 ・・Silencing means for blasting operations

F42D 5/06 ・Unloading boreholes

F42D 99/00 Subject matter not provided for in other groups in this subclass