F04B7/0038 - CPC Classification Index

ClassID:

142673 ⎘

F04B7/0038 - CPC Classification

Classification description:

Piston machines or pumps characterised by having positively-driven valving the distribution member forming a single inlet for a plurality of pumping chambers or a multiple discharge for one single pumping chamber

Recent Application in this class:

20250382952

2025-12-18

SYSTEM FOR DISTRIBUTING WORKING FLUID FLOW ACROSS INLET PASSAGES OF RECIPROCATING PUMPS

20250249568

2025-08-07

HYDRAULIC PUMP

20240261953

2024-08-08

Hydraulic pump

20230093786

2023-03-23

Hydraulic Pump

20230039274

2023-02-09

HYDRAULIC PUMP

20200355177

2020-11-12

Pressure adjustment apparatus and method

20200158098

2020-05-21

Electric pump device

20200001446

2020-01-02

Hydraulic piston pump for a hydraulic tool

20180335024

2018-11-22

Hydraulic pump

#10

20150285231

2015-10-08

VALVE STRUCTURE FOR A COMPRESSOR

#11

20150285230

2015-10-08

SEAL STRUCTURE FOR A ROTARY VALVE COMPRESSOR

#12

20150267696

2015-09-24

Multi-port metering pump assembly and related methods

#13

20050069424

2005-03-31

Micro pump using ferrofluid or magneto-rheological fluid