Patent classifications
F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Load children
F23
COMBUSTION APPARATUS; COMBUSTION PROCESSES
Load children
F23Q
IGNITION; EXTINGUISHING-DEVICES
Load children
F23Q9/08
with interlock with main fuel supply
Load children Filter patents View analytics View as hierarchy
F23Q9/12
to permit the supply to the main burner in dependence upon existence of pilot flame
Load children Filter patents View analytics View as hierarchy
F23Q9/14
using electric means, e.g. by light-sensitive elements
Filter patents View analytics View as hierarchy