ClassID:

142800

F04B19/003 - CPC Classification

Classification description:

Machines or pumps having pertinent characteristics not provided for in, or of interest apart from, groups  -  free-piston type pumps

Recent Application in this class:
#1
20240328439
2024-10-03

CYLINDER IN PARTICULAR FOR HYDROGEN TANK CYCLING FACILITY

#2
20240044326
2024-02-08

HYDRAULIC PUMPING SYSTEM

#3
20220186679
2022-06-16

PRESSURE BOOST SYSTEM

#4
20200224652
2020-07-16

Hydraulic pumping system

#5
20190271396
2019-09-05

Rotating piston for pumps

#6
20190195244
2019-06-27

Suction pumps

#7
20180180042
2018-06-28

SUBMERGIBLE CRYOGENIC PUMP WITH LINEAR ELECTROMAGNETIC MOTOR DRIVE

#8
20180135620
2018-05-17

Hydraulic artificial lift for driving downhole pumps

#9
20180051690
2018-02-22

Free piston linear motor compressor and associated systems of operation

#10
20170191563
2017-07-06

Rotating piston for pumps

#11
20170191478
2017-07-06

Fluted piston components for pumps

#12
20170002801
2017-01-05

Linear compressor

#13
20160281690
2016-09-29

Dual-stage cryogenic pump

#14
20160010640
2016-01-14

Pressure relief mechanism for linear actuator well pump

#15
20150308243
2015-10-29

WIRELINE PUMP

#16
20150308241
2015-10-29

Hydraulically powered ball valve lift apparatus and method for downhole pump travelling valves

#17
20150285243
2015-10-08

Hydraulic pumping assembly, system and method

#18
20150125323
2015-05-07

Free piston linear motor compressor and associated systems of operation

#19
20130068792
2013-03-21

Mobile delivery platform for flowable explosive

#20
20120328459
2012-12-27

Pump

#21
20120318239
2012-12-20

Free piston engines with single hydraulic piston actuator and methods

#22
20120317995
2012-12-20

PUMP FOR CONVEYING A CRYOGENIC FLUID

#23
20120175386
2012-07-12

Magnetic drive for dispensing apparatus

#24
20100327011
2010-12-30

Mobile delivery platform for flowable explosive

#25
20100258592
2010-10-14

Magnetic drive for dispensing apparatus

#26
20100089464
2010-04-15

FLYING VALVE FOR FREE PISTON

#27
20100064676
2010-03-18

The Operation of a Pressure Generator

#28
20090185917
2009-07-23

Fluid pressure exchange mechanism and method of operating same

#29
20080185045
2008-08-07

ENERGY RECOVERY APPARATUS AND METHOD

#30
20080175721
2008-07-24

Magnetic displacement pump and compressor

#31
20070154332
2007-07-05

Vapor recovery pump

#32
20060239832
2006-10-26

Compressed air power generating systems using a rotary gravity compressor

#33
20060051224
2006-03-09

Pusher fire pumper tanker (The cannon pump)

#34
20050028759
2005-02-10

Hybrid two cycle engine, compressor and pump, and method of operation

#35
15219084
2019-08-06

Gradient high pressure syringe pump