ClassID:

143221

F04B53/148 - CPC Classification

Classification description:

Component parts, details or accessories not provided for in, or of interest apart from, groups  -  or  - ; Pistons, piston-rods or piston-rod connections the piston being provided with channels which are coacting with the cylinder and are used as a distribution member for another piston-cylinder unit

Recent Application in this class:
#1
20260028983
2026-01-29

Multi-Mode Piston: A Chemical Engineering Building Block

#2
20230075848
2023-03-09

OSCILLATORY-ROTARY LIQUID DISPENSING DEVICE WITH SPRING, AND ASSOCIATED METHOD

#3
20220025882
2022-01-27

Piston rod rotation features in a spray fluid pump

#4
20210215153
2021-07-15

Piston for compressor

#5
20200300239
2020-09-24

HAND AIR PUMP INFLATING DEVICE

#6
20190271396
2019-09-05

Rotating piston for pumps

#7
20190010934
2019-01-10

Volumetric pump

#8
20180010591
2018-01-11

FLUID ENERGY MACHINE, METHOD FOR GENERATING A FLUID VOLUME FLOW AND/OR FOR COMPRESSING A FLUID AND METHOD FOR REFUELLING A VEHICLE

#9
20170191563
2017-07-06

Rotating piston for pumps

#10
20170191478
2017-07-06

Fluted piston components for pumps

#11
20170058878
2017-03-02

Hydraulic drive system for cryogenic pump

#12
20160333870
2016-11-17

Liquid supply device

#13
20160195074
2016-07-07

Rotary swinging subassembly and device for cointegrated fluidic multiplexing and volumetric pumping of a fluid

#14
20160161773
2016-06-09

Liquid crystal pump and method for ejecting liquid crystal using the same

#15
20150377232
2015-12-31

Piston with a heat exchanger

#16
20150192017
2015-07-09

Hydrostatic energy generator

#17
20130287611
2013-10-31

Double acting refrigeration compressor

#18
20120308419
2012-12-06

Mechanism to Raise the Efficiency of a Reciprocating Refrigeration Compressor

#19
20120042773
2012-02-23

Pump Piston Device

#20
20110182759
2011-07-28

Mechanism to Raise the Efficiency of a Reciprocating Air Compressor

#21
20110182758
2011-07-28

Mechanism to Raise the Efficiency of a Reciprocating Refrigeration Compressor

#22
20100202901
2010-08-12

Self lubricating pump

#23
20100196178
2010-08-05

Metering pump

#24
20090267040
2009-10-29

Hydraulic pumping cylinder and method of pumping hydraulic fluid

#25
20060090477
2006-05-04

Piston compressor