having air-tight casings

Full Title

Arrangement of distributors, circuit-makers, circuit-breakers or pick-up devices for electric spark ignition > of circuit-makers or -breakers, or pick-up devices adapted to sense particular points of the timing cycle > having air-tight casings

Classification Context

Section:

MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

Class:

COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS

Subclass:

IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES