Y10T137/7772 - CPC Classification Index

ClassID:

249139 ⎘

Y10T137/7772 - CPC Classification

Classification description:

Fluid handling; Line condition change responsive valves; Bi-directional flow valves One head and seat carried by head of another

Sub-classes:

Y10T137/7773 » Supporting valve only spring biased 10
Y10T137/7774 » Supporting valve spring carried by supporting valve 9
Y10T137/7777 » Both valves spring biased 33

Recent Application in this class:

20210208613

2021-07-08

Vent valve for an inner floating roof

20170297815

2017-10-19

Automatic aeration device for oil tank

20170138493

2017-05-18

Valve device

20160319942

2016-11-03

In-line servicable shutoff valve with excess flow

20160186697

2016-06-30

Flow control valve and fuel vapor processing apparatus incorporating the flow control valve

20150167426

2015-06-18

Flow control device and flow control method

20130008513

2013-01-10

Flow control device and flow control method

20120169195

2012-07-05

Closure device for a housing, sealed off from the environment, and a housing

20110162843

2011-07-07

Process and apparatus to improve reliability of pinpoint stimulation operations

#10

20060283501

2006-12-21

Roll-over valve with shared overfill protection and vacuum relief

#11

20050257837

2005-11-24

Combination umbrella and inverted bi-directional valve

#12

20050145558

2005-07-07

Filter device having a bi-directional valve

#13

17366450

2022-07-12

Bidirectional pressure relief valve

#14

16908193

2022-04-12

Fluid expansion tank

#15

15846866

2020-06-23

Fluid expansion tank