Patents-Review.com
ClassID:

68081 ⎘

B61D7/02 - CPC Classification

Classification description:

Hopper cars with discharge openings in the bottoms

Sub-classes:
Recent Application in this class:
#1
20260138650
2026-05-21

AERODYNAMIC RAILCAR PANEL

 #2
20260131376
2026-05-14

LOW-SULFUR GRANULATED METALLIC UNITS, AND ASSOCIATED SYSTEMS, DEVICES, AND METHODS

 #3
20260062037
2026-03-05

HOPPER RAILROAD CAR HAVING PARTITION AND/OR FRAME ASSEMBLIES FLEXIBLY CONNECTED TO THE SIDE WALLS AND/OR ROOF

 #4
20260062036
2026-03-05

Hopper Car Discharge Gate Seal Assembly

 #5
20260054753
2026-02-26

CAST COMPONENTS FOR COLD FORMED CENTER SILL RAIL CAR MODIFICATION PROGRAMS

 #6
20260054312
2026-02-26

TREATING COOLING WATER IN IRON PRODUCTION FACILITIES, AND ASSOCIATED SYSTEMS, DEVICES, AND METHODS

 #7
20260048434
2026-02-19

LOW-CARBON GRANULATED METALLIC UNITS, AND ASSOCIATED SYSTEMS, DEVICES, AND METHODS

 #8
20260034581
2026-02-05

USE OF RESIDUAL IRON WITHIN GRANULATED METALLIC UNIT PRODUCTION FACILITIES, AND ASSOCIATED SYSTEMS, DEVICES, AND METHODS

 #9
20260001124
2026-01-01

CONTINUOUS GRANULATED METALLIC UNITS PRODUCTION, AND ASSOCIATED SYSTEMS, DEVICES, AND METHODS

 #10
20250353076
2025-11-20

USE OF A BASIC OXYGEN FURNACE TO PRODUCE GRANULATED METALLIC UNITS, AND ASSOCIATED SYSTEMS, DEVICES, AND METHODS

 #11
20250083980
2025-03-13

TREATING COOLING WATER IN IRON PRODUCTION FACILITIES, AND ASSOCIATED SYSTEMS, DEVICES, AND METHODS

 #12
20250083713
2025-03-13

RAILCARS FOR TRANSPORTING GRANULATED METALLIC UNITS, AND ASSOCIATED SYSTEMS, DEVICES, AND METHODS

 #13
20250083232
2025-03-13

CONTINUOUS GRANULATED METALLIC UNITS PRODUCTION, AND ASSOCIATED SYSTEMS, DEVICES, AND METHODS

 #14
20250083231
2025-03-13

USE OF RESIDUAL IRON WITHIN GRANULATED METALLIC UNIT PRODUCTION FACILITIES, AND ASSOCIATED SYSTEMS, DEVICES, AND METHODS

 #15
20250083230
2025-03-13

USE OF A BASIC OXYGEN FURNACE TO PRODUCE GRANULATED METALLIC UNITS, AND ASSOCIATED SYSTEMS, DEVICES, AND METHODS

 #16
20250083224
2025-03-13

LOW-CARBON GRANULATED METALLIC UNITS, AND ASSOCIATED SYSTEMS, DEVICES, AND METHODS

 #17
20250083223
2025-03-13

LOW-SULFUR GRANULATED METALLIC UNITS, AND ASSOCIATED SYSTEMS, DEVICES, AND METHODS

 #18
20250042446
2025-02-06

ASYMMETRIC HOPPER CARS

 #19
20240140497
2024-05-02

METHOD OF REPURPOSING SMALL CUBE COVERED HOPPER RAILCARS AND MODIFIED RAILCARS FORMED THEREBY

 #20
20240140496
2024-05-02

METHOD OF MODIFYING ALUMINUM BODY RAILCARS, MODIFIED RAILCARS FORMED THEREBY AND ALUMINUM TOP CORD SPLICE COUPLING USED THEREIN

 #21
20240083468
2024-03-14

MODELING PROCESS AND STRUCTURAL REPAIR OF A RAILWAY OR METAL CAR

 #22
20240075966
2024-03-07

Mechanism for longitudinal door systems

 #23
20230406365
2023-12-21

AUTOMATIC DISCHARGE SLIDING DOOR MECHANISM FOR RAILROAD HOPPER CARS

 #24
20230399033
2023-12-14

RAILROAD HOPPER CAR WITH FLOW THROUGH STRUCTURE

 #25
20230399032
2023-12-14

Railcar door operating systems and methods with capstan drives

 #26
20230391379
2023-12-07

SAND RAIL CAR MODULARIZED LENGTHENING MODIFICATION PROGRAMS AND RAILCARS FORMED THEREBY

 #27
20230322277
2023-10-12

Hopper Railcar Composite Partition

 #28
20230322276
2023-10-12

HOPPER RAILROAD CAR HAVING TOP HATCH COVER ASSEMBLY

 #29
20230311955
2023-10-05

Discharge gate arrangements for railroad hopper cars

 #30
20230192156
2023-06-22

Hopper railcar with door deflector for transverse pivoted outlet gate, door deflector and method of retrofitting hopper railcar to include door deflector for transverse pivoted outlet gate

 #31
20220371629
2022-11-24

HOPPER CAR DISCHARGE GATE SEAL ASSEMBLY

 #32
20220371628
2022-11-24

COVERED HOPPER RAILCAR

 #33
20220371627
2022-11-24

RAILCAR GATE ADAPTOR AND RAILCAR MODIFICATION USING THE SAME

 #34
20220363294
2022-11-17

Longitudinal door operating mechanism

 #35
20220332353
2022-10-20

Belly dump trailer with conveyors for moving material

 #36
20220135093
2022-05-05

Discharge Gate Sensing Method, System and Assembly

 #37
20220063682
2022-03-03

Hopper railroad car having top hatch cover assembly

 #38
20210362752
2021-11-25

Asymmetric hopper cars

 #39
20210197870
2021-07-01

Railcar door operating systems and methods with capstan drives

 #40
20210146967
2021-05-20

Discharge gate arrangements for railroad hopper cars

 #41
20210107533
2021-04-15

Hopper car double doors

 #42
20210053593
2021-02-25

Railcar hatch cover

 #43
20210046956
2021-02-18

Centering apparatus for hopper car doors

 #44
20210039686
2021-02-11

Hopper railcar composite partition

 #45
20210009169
2021-01-14

METHOD AND CAST COMPONENTS FOR COLD FORMED CENTER SILL RAIL CAR MODIFICATION PROGRAMS AND RAILCARS FORMED THEREBY

 #46
20200406942
2020-12-31

Rail and train system

 #47
20200406938
2020-12-31

Covered hopper car

 #48
20200398872
2020-12-24

Rapid discharge door locking system

 #49
20200369300
2020-11-26

Mechanism for longitudinal door systems

 #50
20200353954
2020-11-12

Railroad hopper car with flow through structure

 #51
20200339163
2020-10-29

Railroad hopper car structure and gate therefor

 #52
20200317231
2020-10-08

Open top hopper railcar with lading shedding top chord and corner cap and integrated door operating controls with manual override

 #53
20200298895
2020-09-24

HOPPER RAILCAR WITH DOOR DEFLECTOR FOR TRANSVERSE PIVOTED OUTLET GATE, DOOR DEFLECTOR AND METHOD OF RETROFITTING HOPPER RAILCAR TO INCLUDE DOOR DEFLECTOR FOR TRANSVERSE PIVOTED OUTLET GATE

 #54
20200255037
2020-08-13

Railcar ballast delivery gate

 #55
20200239039
2020-07-30

Covered hopper car

 #56
20200062280
2020-02-27

Discharge gate arrangements for railroad hopper cars

 #57
20200023867
2020-01-23

Railroad hopper car

 #58
20200010097
2020-01-09

Railcar with adjustable opening longitudinal gates

 #59
20190344809
2019-11-14

Covered hopper railcar for carrying flowable materials

 #60
20190315377
2019-10-17

Handheld solenoid activation remote for a railroad car door

 #61
20190225248
2019-07-25

Discharge gate sensing method, system and assembly

 #62
20190202481
2019-07-04

Longitudinal sliding gate for hopper car

 #63
20190176855
2019-06-13

Mechanism for operating a railcar discharge gate assembly

 #64
20190176852
2019-06-13

Actuating system for transverse doors of railroad hopper car

 #65
20190126946
2019-05-02

Remotely operated railcar hatches

 #66
20190061788
2019-02-28

NON-HORIZONTAL DISCHARGE GATES

 #67
20190001997
2019-01-03

LONGITUDINAL GATE HOPPER CAR WITHOUT PARTITIONS

 #68
20180362056
2018-12-20

Covered hopper railcar for carrying flowable materials

 #69
20180345998
2018-12-06

Hopper car discharge gates

 #70
20180345997
2018-12-06

Hopper car double doors

 #71
20180334178
2018-11-22

Covered hopper car

 #72
20180305967
2018-10-25

Railroad hopper car body fittings

 #73
20180281824
2018-10-04

Mechanism for longitudinal door systems

 #74
20180222495
2018-08-09

Railcar with adjustable opening longitudinal gates

 #75
20180201279
2018-07-19

Railcar with progressive opening longitudinal gates

 #76
20180201278
2018-07-19

Railcar with nested sliding gates

 #77
20180194372
2018-07-12

Hopper car gate with multiple openings

 #78
20180186387
2018-07-05

Hopper Car with Low-Height Gate

 #79
20180178817
2018-06-28

Rail car key adaptor tool

 #80
20180155977
2018-06-07

Method and mechanism for controlling gravitational discharge of material from a railroad hopper car

 #81
20180148278
2018-05-31

METHODS OF STORING AND MOVING PROPPANT AT LOCATION ADJACENT RAIL LINE

 #82
20180127004
2018-05-10

Covered hopper car with stiffened bulkheads

 #83
20180118231
2018-05-03

COMMODITY MEASURING FOR A RAILCAR

 #84
20180072333
2018-03-15

Connecting rod type two-level locking device, hopper car bottom door and hopper car

 #85
20180001905
2018-01-04

Open Top Hopper Railcar with Lading Shedding Top Chord and Corner Cap and Door Operating Controls with Manual Overide

 #86
20180001904
2018-01-04

Wagon and vehicle body assembly thereof

 #87
20170267259
2017-09-21

Hopper car gate seal

 #88
20170240363
2017-08-24

Methods of storing and moving proppant at location adjacent rail line

 #89
20170225694
2017-08-10

Hatch cover for railway cars and method of manufacturing the same

 #90
20170158207
2017-06-08

Railroad hopper car discharge gate assembly and related method for controlling discharge of material from a railroad hopper car

 #91
20170107751
2017-04-20

Compartment and bottom door thereof

 #92
20170096778
2017-04-06

Autonomous ballast unloading consist

 #93
20170015510
2017-01-19

Railcar vibrator lifter

 #94
20160368704
2016-12-22

Methods of storing and moving proppant at location adjacent rail line

 #95
20160311445
2016-10-27

Railroad hopper car door operating mechanism

 #96
20160244075
2016-08-25

Method for influencing gravitational discharge of material from a railroad hopper car

 #97
20160137210
2016-05-19

Rail road hopper car

 #98
20160121909
2016-05-05

Material transport and distribution consist with controlled gated hopper cars and conveyor systems

 #99
20160031454
2016-02-04

Connecting Rod Type Two-Level Locking Device, Hopper Car Bottom Door and Hopper Car

 #100
20160001788
2016-01-07

Baffle

 #101
20160001787
2016-01-07

Equipment envelope for hopper wagon

 #102
20150368037
2015-12-24

Method of delivering, transporting, and storing proppant for delivery and use at a well site

 #103
20150336591
2015-11-26

Open top hopper railcar with biased door seal and enlarged contoured end door

 #104
20150197257
2015-07-16

Covered hopper railcar for carrying flowable materials

 #105
20150166079
2015-06-18

Automatic hopper car gate opening and closing system

 #106
20150166078
2015-06-18

Valve for outlet gate assembly for hopper cars

 #107
20150096459
2015-04-09

Door and door operating assembly for a railcar and method of assembling the same

 #108
20150096458
2015-04-09

Door sealing assembly for a railcar and method of assembling the same

 #109
20150000555
2015-01-01

DISCHARGE ASSEMBLY FOR A WAGON

 #110
20140366770
2014-12-18

DISCHARGE ASSEMBLY WITH SEAL

 #111
20140360056
2014-12-11

Railcar ballast distributing apparatus

 #112
20140331892
2014-11-13

Rail road hopper car ridge fittings

 #113
20140261070
2014-09-18

Outlet gate assembly for hopper cars

 #114
20140224148
2014-08-14

Bottom door device and hopper car having the same

 #115
20140216299
2014-08-07

Bottom door opening-closing mechanism, bottom door device and drop-bottom hopper car

 #116
20140158017
2014-06-12

Open top hopper railcar with biased door seal and enlarged contoured end door

 #117
20130291760
2013-11-07

Hopper gate opener

 #118
20130160670
2013-06-27

Open top hopper railcar with lading shedding top chord and corner cap and integrated door operating controls with manual override

 #119
20130032055
2013-02-07

Side contoured open top hopper railcar with biased door seal and enlarged contoured end door

 #120
20120237302
2012-09-20

PRESSURE GAUGE ASSEMBLY FOR A RAILCAR AND METHOD OF ASSEMBLING THE SAME

 #121
20120210906
2012-08-23

Apparatus for controlling discharge of material from a railroad hopper car

 #122
20120199042
2012-08-09

Support system for a railcar and method for assembling the same

 #123
20120199041
2012-08-09

Rail road hopper car ridge fittings

 #124
20120152146
2012-06-21

Hatch assembly for a railcar and method for assembling the same

 #125
20120042804
2012-02-23

Rail road hopper car ridge fittings

 #126
20110185940
2011-08-04

Automated railcar gate operating system

 #127
20110179969
2011-07-28

Open top hopper railcar with lading shedding top chord and corner cap and integrated door operating controls with manual override

 #128
20110041724
2011-02-24

Railroad gondola car structure and mechanism therefor

 #129
20110006592
2011-01-13

System and method for accumulation of air for pneumatic railroad car systems

 #130
20110005425
2011-01-13

Increased capacity railcar and method

 #131
20100319570
2010-12-23

Rail road hopper car structure

 #132
20100251922
2010-10-07

Railroad gondola car structure and mechanism therefor

 #133
20100219148
2010-09-02

Railroad gondola car structure and mechanism therefor

 #134
20100218700
2010-09-02

Side dump and bottom dump railroad cars

 #135
20100132587
2010-06-03

Rail road hopper car ridge fittings

 #136
20100126375
2010-05-27

Center sill for railroad freight car

 #137
20090120323
2009-05-14

Hollow railroad car structure

 #138
20090090268
2009-04-09

Hopper car having double-curved side walls

 #139
20080236438
2008-10-02

Railcar with discharge control system

 #140
20080223252
2008-09-18

Hopper car with lading dislodgement fittings and method of operation

 #141
20080066642
2008-03-20

Rail road hopper car fittings and method of operation

 #142
20080035014
2008-02-14

Lightweight hopper car with through center sill

 #143
20070084378
2007-04-19

Hopper cars with one or more discharge control systems

 #144
20060185552
2006-08-24

Railcar with discharge control system

 #145
20050204950
2005-09-22

Rail car door opener and closer

 #146
20050056186
2005-03-17

Railway hopper car with longitudinal discharge openings

 #147
20050056185
2005-03-17

Railcar with discharge control system

 #148
17745945
2026-02-03

System and apparatus for providing supplemental securement of doors of bottom dump material transport containers

 #149
15879226
2020-11-10

Device and method for unloading bulk materials from a vehicle