Y10T137/3149 - CPC Classification Index

ClassID:

248729 ⎘

Y10T137/3149 - CPC Classification

Classification description:

Fluid handling Back flow prevention by vacuum breaking [e.g., anti-siphon devices]

Sub-classes:

Y10T137/3185 » Air vent in liquid flow line 32

Recent Application in this class:

20230058099

2023-02-23

Automatic draining back flow prevention device

20210310223

2021-10-07

Automatic draining back flow prevention device

20200325662

2020-10-15

Mixing hydrant

20190316333

2019-10-17

Automatic draining back flow prevention device

20180030708

2018-02-01

Flushometer valve to outlet tube coupling

20170081833

2017-03-23

Automatic draining back flow prevention device

20160362878

2016-12-15

Device for preventing backflow

20160002898

2016-01-07

Automatic draining back flow prevention device

20150040619

2015-02-12

Washing machine

#10

20140373939

2014-12-25

Piston-controlled anti-siphon valve

#11

20140202563

2014-07-24

Automatic draining back flow prevention device

#12

20130056090

2013-03-07

FAN ASSEMBLY WITH BACKFLOW PREVENTING STRUCTURE

#13

20120325332

2012-12-27

Automatic draining back flow prevention device

#14

20120305100

2012-12-06

Check valve flap for fluid injector

#15

20120305093

2012-12-06

Method of installing an anti-siphon assembly

#16

20120298213

2012-11-29

ANTI SIPHON DEVICE

#17

20120222755

2012-09-06

Marine fuel backflow preventer and over-fill alarm system

#18

20120192904

2012-08-02

Siphon break apparatus configured to substantially prevent a siphon effect in a fluid conduit of a dishwasher and an associated method

#19

20120145257

2012-06-14

Backflow prevention device and fan assembly

#20

20120031513

2012-02-09

FLUID DELIVERY DEVICE WITH FLOW RATE CONTROL

#21

20120031503

2012-02-09

FLUID DELIVERY DEVICE WITH FLOW RATE CONTROL

#22

20120031497

2012-02-09

METHOD TO DELIVER A FLUID WITH FLOW RATE CONTROL

#23

20120024021

2012-02-02

Washing machine

#24

20120012194

2012-01-19

Double check back flow prevention device

#25

20120012193

2012-01-19

Apparatus for preventing backflow of fill valve in water toilet

#26

20110266245

2011-11-03

Infant Oral Feeding System

#27

20110041561

2011-02-24

Apparatus And Method For Supplying Hot, Cold Or Mixed Water To A Washing Machine Using A Single Water Supply Hose

#28

20110017316

2011-01-27

Backflow preventing apparatus for water closets

#29

20100269913

2010-10-28

Gravity-assisted drain valve for restricting intake of mildew spores

#30

20100224260

2010-09-09

Anti-siphoning fuel device, system, and method

#31

20100193043

2010-08-05

Valve assembly

#32

20100193042

2010-08-05

Anti-siphon installation assembly

#33

20090314980

2009-12-24

Seal-retaining valve for fluid metering device

#34

20090314369

2009-12-24

Internal leak detection and backflow prevention in a flow control arrangement

#35

20090288722

2009-11-26

Double check back flow prevention device

#36

20090229675

2009-09-17

IN-LINE FILTER/FLOW REGULATOR/ANTI-SIPHON DEVICE

#37

20090065067

2009-03-12

Check valve flap for fluid injector

#38

20080257412

2008-10-23

Fluid Delivery Device With Flow Rate Control

#39

20080210310

2008-09-04

Sanitary installation part

#40

20070068575

2007-03-29

Transfer unit

#41

15357997

2018-02-20

Anti-siphon valve with freeze protection

#42

14507716

2016-11-29

Anti-siphon valve with freeze protection