IPC 2013 : E05B 55/10 : without securing the bolt.

IPC2013 > E > E05 > E05B > E05B 55/00 > E05B 55/10[2] > without securing the bolt.
Notes[t] E01 - E06: BUILDING
Notes[g] E05B 55/00 - E05B 61/00: Locks with provision for latching
E SECTION E — FIXED CONSTRUCTIONS.
E05 LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES.
E05B LOCKS; ACCESSORIES THEREFOR; HANDCUFFS.
E05B 55/00 Locks in which a sliding latch is used also as a locking bolt.
E05B 55/10 · · without securing the bolt.