DIFF Subgroup
G05D 13/10 Centrifugal governors with fly-weights
Introduced: September 1968
Full Title
Control of linear speed; Control of angular speed; Control of acceleration or deceleration, e.g. of a prime mover > without auxiliary power > Centrifugal governors with fly-weights
IPC and CPC are identically structured here. All 7 subcodes exist in both systems.
Child Classifications
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- G05D 13/18 counterbalanced by spider springs acting immediately upon the fly-weights IPC+CPC Available in IPC and CPC
- G05D 13/20 counterbalanced by spider springs acting upon the articulated riser IPC+CPC Available in IPC and CPC
- G05D 13/22 counterbalanced by fluid pressure acting upon the articulated riser IPC+CPC Available in IPC and CPC
- G05D 13/24 counterbalanced by two or more different appliances acting simultaneously upon the riser, e.g. with both spring force and fluid pressure or with both spring force and electromagnetic force IPC+CPC Available in IPC and CPC
- G05D 13/26 with provision for modulating the degree of non-uniformity of speed IPC+CPC Available in IPC and CPC
- G05D 13/28 with provision for performing braking effects in case of increased speed IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class G05,2013–2023, worldwide · Source: EPO PATSTAT
- SIEMENS DE 4,725
- SGCC(STATE GRID CORPORATION OF CHINA) 4,571
- FANUC JP 4,233
- MITSUBISHI ELECTRIC CORPORATION JP 3,143
- FANUC 2,981
- ROBERT BOSCH DE 2,813
- CHINESE ACADEMY OF SCIENCES 2,500
- LG ELECTRONICS KR 2,182
- OMRON CORPORATION JP 2,036
- SAMSUNG ELECTRONICS COMPANY KR 1,981
Top Applicants (CPC)
Class G05,2013–2023, worldwide · Source: EPO PATSTAT
- FANUC JP 6,367
- SIEMENS DE 5,963
- FANUC 4,535
- MITSUBISHI ELECTRIC CORPORATION JP 4,201
- ROBERT BOSCH DE 4,010
- LG ELECTRONICS KR 3,802
- SAMSUNG ELECTRONICS COMPANY KR 3,143
- FORD GLOBAL TECHNOLOGIES US 2,889
- TOYOTA MOTOR CORPORATION 2,778
- OMRON CORPORATION JP 2,743