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IPC Subgroup
G05D 13/1

Centrifugal governors with fly-weights

Introduced: September 1968

Last revised: January 2006

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

Classification Context

Section:
PHYSICS
Class:
CONTROLLING; REGULATING
Subclass:
SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES

Related Keywords

FLY (FLIES) weights in centrifugal governorscentrifugal GOVERNORS

7 direct subcodes

Child Classifications

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  • G05D 13/18 counterbalanced by spider springs acting immediately upon the fly-weights
  • G05D 13/2 counterbalanced by spider springs acting upon the articulated riser
  • G05D 13/22 counterbalanced by fluid pressure acting upon the articulated riser
  • 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
  • G05D 13/26 with provision for modulating the degree of non-uniformity of speed
  • G05D 13/28 with provision for performing braking effects in case of increased speed

Top Applicants

Top 10 applicants by patent filingsfor class G05, 2013–2023, worldwide · Source: EPO PATSTAT

  1. SIEMENS DE 4,725
  2. SGCC(STATE GRID CORPORATION OF CHINA) 4,571
  3. FANUC JP 4,233
  4. MITSUBISHI ELECTRIC CORPORATION JP 3,143
  5. FANUC 2,981
  6. ROBERT BOSCH DE 2,813
  7. CHINESE ACADEMY OF SCIENCES 2,500
  8. LG ELECTRONICS KR 2,182
  9. OMRON CORPORATION JP 2,036
  10. SAMSUNG ELECTRONICS COMPANY KR 1,981