CPC Subgroup
F16B 39/24 by means of washers, spring washers, or resilient plates that lock against the object (locking to the screw-thread F16B39/14 , F16B39/36)
Full Title
Locking of screws, bolts or nuts (; locking of bottle closures B65D; locking of rail-fastening bolts for permanent ways E01B9/12; locking of fastening means for railway fishplates E01B11/38; locking devices for valves or cocks F16K) > in which the locking takes place during screwing down or tightening (F16B39/01 takes precedence) > by means of washers, spring washers, or resilient plates that lock against the object (locking to the screw-thread F16B39/14 , F16B39/36)
1 direct subcode
Child Classifications
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- F16B 39/26 with spring washers fastened to the nut or bolt-head
Top Applicants
Top 10 applicants by patent filingsfor class F16, 2013–2023, worldwide · Source: EPO PATSTAT
- SCHAEFFLER TECHNOLOGIES & COMPANY DE 22,817
- ZAHNRADFABRIK FRIEDRICHSHAFEN DE 10,523
- HYUNDAI MOTOR COMPANY KR 7,933
- ROBERT BOSCH DE 7,059
- KIA MOTORS CORPORATION KR 4,867
- SKF SE 4,729
- TOYOTA MOTOR CORPORATION JP 4,111
- FORD GLOBAL TECHNOLOGIES US 3,838
- GM GLOBAL TECHNOLOGY OPERATIONS US 3,575
- TOYOTA MOTOR CORPORATION 3,499