IPC Subgroup
F16F 3/12 the steel spring being in contact with the rubber spring, e.g. being embedded in it
Introduced: January 1995
Last revised: January 2006
Full Title
Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic > with springs made of a material having high internal friction, e.g. rubber > combined with springs made of steel or other material having low internal friction > the steel spring being in contact with the rubber spring, e.g. being embedded in it
Classification Context
- Section:
- MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- Class:
- ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- Subclass:
- SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
Top Applicants
Top 10 applicants by patent filingsfor class F16, 2013–2023, worldwide · Source: EPO PATSTAT
- SCHAEFFLER TECHNOLOGIES & COMPANY DE 21,545
- ZAHNRADFABRIK FRIEDRICHSHAFEN DE 9,446
- TOYOTA MOTOR CORPORATION 7,215
- HYUNDAI MOTOR COMPANY KR 6,846
- ROBERT BOSCH DE 6,106
- NTN CORPORATION 5,305
- SKF SE 4,219
- KIA MOTORS CORPORATION KR 3,852
- NSK 3,850
- HONDA MOTOR COMPANY 3,639