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IPC Subgroup
F04B 1/328

by changing the inclination of the axis of the cylinder barrel relative to the swash plate

Introduced: January 2020

Full Title

Multi-cylinder machines or pumps characterised by number or arrangement of cylinders > having cylinder axes coaxial with, or parallel or inclined to, main shaft axis > Control > of machines or pumps with rotary cylinder blocks > by varying the relative positions of a swash plate and a cylinder block > by changing the inclination of the axis of the cylinder barrel relative to the swash plate

Classification Context

Section:
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Class:
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
Subclass:
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS

Top Applicants

Top 10 applicants by patent filingsfor class F04, 2013–2023, worldwide · Source: EPO PATSTAT

  1. GREE ELECTRIC APPLIANCES 5,351
  2. LG ELECTRONICS KR 3,502
  3. ROBERT BOSCH DE 3,011
  4. MIDEA 2,258
  5. MITSUBISHI ELECTRIC CORPORATION JP 1,663
  6. ZHUHAI LANDA COMPRESSOR COMPANY 1,639
  7. GREE ELECTRIC APPLIANCES, INC.OF ZHUHAI 1,573
  8. ZHUHAI GREE ENERGY-SAVING REFRIGERATION TECHNOLOGY RESEARCH CENTER COMPANY 1,536
  9. TOYOTA INDUSTRIES CORPORATION 1,347
  10. DAIKIN INDUSTRIES 1,325