F16D 3/223 the rolling members being guided in grooves in both coupling parts
Full Title
Yielding couplings, i.e. with means permitting movement between the connected parts during the drive (couplings disconnectable simply by axial movement F16D1/10; slip couplings F16D7/00) > Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts > one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members (F16D3/18, F16D3/24 take precedence) > the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts > the rolling members being guided in grooves in both coupling parts
Filing statistics
CPC F16D 3/223 belongs to the parent subclass F16D, which recorded 116,166 patent applications worldwide between 2013 and 2023. Annual filings declined from 9,380 in 2013 to 7,255 in 2023 (-23%), peaking at 13,228 applications in 2017. The most active applicants in class F16 are SCHAEFFLER TECHNOLOGIES & COMPANY (22,817 applications), ZAHNRADFABRIK FRIEDRICHSHAFEN (10,523 applications) and HYUNDAI MOTOR COMPANY (7,933 applications).
Source: EPO PATSTAT, worldwide filings
13 direct subcodes
Child Classifications
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- F16D 3/2233 where the track is made up of two curves with a point of inflexion in between, i.e. S-track joints
- F16D 3/2237 where the grooves are composed of radii and adjoining straight lines, i.e. undercut free [UF] type joints
- F16D 3/224 the groove centre-lines in each coupling part lying on a sphere
- F16D 3/226 the groove centre-lines in each coupling part lying on a cylinder co-axial with the respective coupling part
- F16D 3/229 Prismatic coupling parts having each groove centre-line lying on planes parallel to the axis of the respective coupling part (F16D3/224, F16D3/226 take precedence)
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