F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
Introduced: September 1968
Description
F15B covers fluid-pressure actuator systems and general fluid-power technologies, including hydraulic and pneumatic devices that convert fluid energy into mechanical motion or control. This subclass encompasses servomotors, cylinders, motors, pumps, valves, accumulators, and system components used in fluid-pressure applications across diverse machinery and industrial equipment. It also includes residual technical details and system aspects of fluid-power installations not specifically allocated to other IPC classes. Adjacent classes F15C and F15D address more specialized applications such as fluid-power tools and prime movers respectively.
Additional Content IPC
Fluid clutches or brakes Fluid springs Fluid gearing Fluid-operating means for valves
Of 16 combined children, 13 exist in both systems.
3 codes are CPC-only extensions.
Note: 3 CPC extensions are marked as secondary classification only.
5 shared codes have differing titles between IPC and CPC.
Child Classifications
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- F15B 1/00 Installations or systems with accumulators; Supply reservoir or sump assemblies IPC+CPC Available in IPC and CPC
- F15B 11/00 Servomotor systems without provision for follow-up action; (F15B3/00 takes precedence) +2 CPC IPC+CPC Available in IPC and CPC
- F15B 13/00 Details of servomotor systems ( F15B15/00 take precedence) +2 CPC IPC+CPC Available in IPC and CPC
- F15B 15/00 Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith IPC+CPC Available in IPC and CPC
- F15B 19/00 Testing; fluid-pressure systems or apparatus not otherwise provided for +3 CPC IPC+CPC Available in IPC and CPC
- F15B 20/00 Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems +6 CPC IPC+CPC Available in IPC and CPC
- F15B 21/00 Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass +5 CPC IPC+CPC Available in IPC and CPC
- F15B 2215/00 Fluid-actuated devices for displacing a member from one position to another 2nd only +1 CPC CPC only CPC only
- F15B 3/00 Intensifiers or fluid-pressure converters, e.g. pressure exchangers; Conveying pressure from one fluid system to another, without contact between the fluids IPC+CPC Available in IPC and CPC
- F15B 5/00 Transducers converting variations of physical quantities, e.g. expressed by variations in positions of members, into fluid-pressure variations or vice versa; Varying fluid pressure as a function of variations of a plurality of fluid pressures or variations of other quantities (F15B9/00 takes precedence) +2 CPC IPC+CPC Available in IPC and CPC
- F15B 7/00 Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors +4 CPC IPC+CPC Available in IPC and CPC
- F15B 9/00 Servomotors with follow-up action, i.e. in which the position of the actuated member conforms with that of the controlling member IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class F15,2013–2023, worldwide · Source: EPO PATSTAT
- ROBERT BOSCH DE 1,079
- SCHAEFFLER TECHNOLOGIES & COMPANY DE 980
- SMC CORPORATION JP 737
- HITACHI CONSTRUCTION MACHINERY COMPANY JP 674
- KYB CORPORATION JP 525
- CATERPILLAR US 461
- FESTO & COMPANY DE 451
- ZHEJIANG UNIVERSITY 448
- HITACHI CONSTRUCTION MACHINERY COMPANY 442
- XUZHOU HEAVY MACHINERY COMPANY 404
Top Applicants (CPC)
Class F15,2013–2023, worldwide · Source: EPO PATSTAT
- ROBERT BOSCH DE 1,281
- SMC CORPORATION JP 865
- HITACHI CONSTRUCTION MACHINERY COMPANY JP 814
- KYB CORPORATION JP 584
- SCHAEFFLER TECHNOLOGIES & COMPANY DE 536
- CATERPILLAR US 532
- FESTO & COMPANY DE 486
- JOHN DEERE US 419
- KAWASAKI HEAVY IND JP 368
- HAMILTON SUNDSTRAND US 368