IPC 2013 : E05B 25/04 : with tumblers in which the stop pin is guided from one locked position to the other in an inclined direction.

IPC2013 > E > E05 > E05B > E05B 25/00 > E05B 25/04[1] > with tumblers in which the stop pin is guided from one locked position to the other in an inclined direction.
Notes[t] E01 - E06: BUILDING
E SECTION E — FIXED CONSTRUCTIONS.
E05 LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES.
E05B LOCKS; ACCESSORIES THEREFOR; HANDCUFFS.
E05B 25/00 Locks with rotary keys moving lamelliform tumblers perpendicular to the key, characterised by the tumblers.
E05B 25/04 · with tumblers in which the stop pin is guided from one locked position to the other in an inclined direction.