IPC Main Group
E05B 37/00 Permutation locks; Puzzle locks
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- FIXED CONSTRUCTIONS
- Class:
- LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- Subclass:
- LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
Additional Content
Limiting references
Electric permutation locks
Application references
Permutation locks for bicycles
Related Keywords
PERMUTATION locks
6 direct subcodes
Child Classifications
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- E05B 37/02 with tumbler discs or rings arranged on a single axis, each disc being adjustable independently of the others
- E05B 37/04 with tumbler discs on a single axis, all the discs being adjustable by rotating a shiftable knob
- E05B 37/08 with tumbler discs on a single axis, all the discs being adjustable by a rotary knob which is not shifted
- E05B 37/12 with tumbler discs on several axes
- E05B 37/16 with two or more push or pull knobs, slides, or the like
- E05B 37/2 Puzzle locks
Top Applicants
Top 10 applicants by patent filingsfor class E05, 2013–2023, worldwide · Source: EPO PATSTAT
- KIEKERT DE 2,762
- HYUNDAI MOTOR COMPANY KR 1,316
- JULIUS BLUM AT 1,088
- FORD GLOBAL TECHNOLOGIES US 1,061
- HAIER SMART HOME 936
- KIA MOTORS CORPORATION KR 909
- HUF HUELSBECK & FUERST & COMPANY DE 887
- LG ELECTRONICS KR 872
- TOKAI RIKA COMPANY 813
- GEZE DE 807