Patents-Review.com
ClassID:

142984 ⎘

F04B39/041 - CPC Classification

Classification description:

Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups -; Measures to avoid lubricant contaminating the pumped fluid sealing for a reciprocating rod

Sub-classes:
Recent Application in this class:
#1
20260146594
2026-05-28

WIPER RING FOR RECIPROCATING COMPRESSOR ROD PACKING

 #2
20250327518
2025-10-23

SEALING RING FOR RECIPROCATING PUMP

 #3
20250297679
2025-09-25

PACKING CASE WITH COMPOSITE RINGS

 #4
20250257800
2025-08-14

SEAL ARRANGEMENT

 #5
20240392768
2024-11-28

COMPRESSOR, DISC BODY AND SEAL

 #6
20240328411
2024-10-03

A RECIPROCATING COMPRESSOR WITH A PRESSURE-DROP CHAMBER AND METHOD

 #7
20240159236
2024-05-16

SEALING DEVICE FOR A PISTON ROD OF A RECIPROCATING COMPRESSOR

 #8
20240159231
2024-05-16

COMPOSITE STRUCTURES FOR RECIPROCATING GAS COMPRESSOR SYSTEMS

 #9
20240159229
2024-05-16

SEALING DEVICE FOR A PISTON ROD OF A RECIPROCATING COMPRESSOR

 #10
20240133372
2024-04-25

Throttle arrangement for piston compressors

 #11
20240102460
2024-03-28

MULTI-PART SEALING ASSEMBLY

 #12
20230341054
2023-10-26

Wiping unit and can body maker

 #13
20230160474
2023-05-25

High pressure seals

 #14
20220389922
2022-12-08

Expansion chamber for progressive sealing system

 #15
20220372963
2022-11-24

Piston compressor and method for operating same

 #16
20220372962
2022-11-24

Packing seal for a piston compressor and method for operating same

 #17
20220178360
2022-06-09

Reciprocating compressor

 #18
20220145991
2022-05-12

PACKAGING RING WITH DIAGONAL RELIEF OPENING

 #19
20220136494
2022-05-05

Packaging ring with relief opening

 #20
20220120347
2022-04-21

Rod packing

 #21
20220099183
2022-03-31

PACKAGING RING WITH WEAR OPENING

 #22
20220074400
2022-03-10

Composite structures for reciprocating gas compressor systems

 #23
20210095652
2021-04-01

LINEAR COMPRESSOR AND SEALED SYSTEM FOR AN APPLIANCE

 #24
20200386218
2020-12-10

Oil wiper packing

 #25
20200332900
2020-10-22

Annular sealing assembly

 #26
20200284248
2020-09-10

Shaft-cylinder assembly for high temperature operation

 #27
20200200161
2020-06-25

Piston rod sealing system for a reciprocating machine and method for sealing such piston rod

 #28
20180156208
2018-06-07

INFLATABLE STATIC SEAL FOR A RECIPROCATING RODS

 #29
20180080561
2018-03-22

Single seal ring stuffing box

 #30
20180066802
2018-03-08

Natural gas reciprocating compressor

 #31
20180051684
2018-02-22

Seal assembly for a piston rod

 #32
20170204974
2017-07-20

Stuffing box and packing rings for use therein

 #33
20160305551
2016-10-20

Single seal ring stuffing box

 #34
20160138584
2016-05-19

Reciprocating compressor, pressure packing, and method

 #35
20160040668
2016-02-11

Shaft seal for an open-drive compressor

 #36
20150369237
2015-12-24

Linear compressor

 #37
20150086388
2015-03-26

Compressor comprising purging and method for purging the compressor housing with purge gas

 #38
20150017037
2015-01-15

SEAL ARRANGEMENT

 #39
20120211945
2012-08-23

SEALING PACKING FOR A RECIPROCATING PISTON ROD OF A RECIPROCATING COMPRESSOR

 #40
20100166582
2010-07-01

Polymer material and seals formed thereof for high pressure pump applications

 #41
20090220364
2009-09-03

Reciprocating-piston compressor having non-contact gap seal

 #42
20090121440
2009-05-14

Dry-running piston rod sealing arrangement, and method for sealing a piston rod using one such arrangement

 #43
20050092174
2005-05-05

Oilless reciprocating fluid machine

 #44
19018992
2025-11-11

Full-sealing positive pressure and negative pressure integrated oil-free compressor for oxygen generation