the bolt being withdrawn by a spring which is stressed by closing the wing

Introduced: September 1968

Last revised: January 2006

Full Title

Operating or controlling locks or other fastening devices by electric or magnetic means > Controlling mechanically-operated bolts by electromagnetically-operated detents > the bolt being withdrawn by a spring which is stressed by closing the wing

Classification Context

Section:: FIXED CONSTRUCTIONS
Class:: LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
Subclass:: LOCKS; ACCESSORIES THEREFOR; HANDCUFFS