Mechanisms in the shape of hinges or pivots, operated by the weight of the wing

Full Title

Closers or openers for wings, not otherwise provided for in this subclass > gravity-actuated > for wings which lift during movement > Mechanisms in the shape of hinges or pivots, operated by the weight of the wing

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