in which a torsion spring rotates a member around an axis arranged in the direction of the axis of the piston

Full Title

Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices > with liquid piston brakes > in which a torsion spring rotates a member around an axis arranged in the direction of the axis of the piston

Classification Context

Section:

FIXED CONSTRUCTIONS

Class:

LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES

Subclass:

DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING