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IPC Main Group
G05D 13/00

Control of linear speed; Control of angular speed; Control of acceleration or deceleration, e.g. of a prime mover

Introduced: September 1968

Last revised: January 2006

Classification Context

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

Additional Content

Controlling drum speed in metal drawing Control of cutting velocity of tool or work Controlling ram speed in presses Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed Devices for controlling the propulsion of electrically-propelled vehicles Road vehicle cruise control Control of cruising speed of aircraft Control of feed rate in manufacture of artificial filaments, threads, fibres, bristles or ribbons Speed control arrangements in carding machines Automatically controlled speed driving mechanism in warping, beaming or leasing machines Cyclically varying speed of looms Control of speed of fluid carrier in chemical analysis Controlling the speed of record carriers of filamentary or web form in information storage systems Controlling the speed of record carriers not specifically of filamentary or web form in information storage systems

Related Keywords

control of ACCELERATIONcontrol of SPEED

6 direct subcodes

Child Classifications

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  • G05D 13/62 characterised by the use of electric means, e.g. use of a tachometric dynamo, use of a transducer converting an electric value into a displacement
  • G05D 13/64 Compensating the speed difference between engines meshing by a differential gearing or the speed difference between a controlling shaft and a controlled shaft
  • G05D 13/66 Governor units providing for co-operation with control dependent upon a variable other than 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