ClassID:

68094

B61D7/28 - CPC Classification

Classification description:

Hopper cars; Adaptations of hopper elements to railways; Closure elements for discharge openings; Opening or closing means hydraulic or pneumatic

Recent Application in this class:
#1
20260054753
2026-02-26

CAST COMPONENTS FOR COLD FORMED CENTER SILL RAIL CAR MODIFICATION PROGRAMS

#2
20250313240
2025-10-09

Improved Automatic Hatch System for Trough Loaded Hopper Railcars

#3
20240083468
2024-03-14

MODELING PROCESS AND STRUCTURAL REPAIR OF A RAILWAY OR METAL CAR

#4
20240075966
2024-03-07

Mechanism for longitudinal door systems

#5
20230406365
2023-12-21

AUTOMATIC DISCHARGE SLIDING DOOR MECHANISM FOR RAILROAD HOPPER CARS

#6
20220363294
2022-11-17

Longitudinal door operating mechanism

#7
20220144319
2022-05-12

Automated Hatch System for Hopper Railcars

#8
20210123362
2021-04-29

Capstan-driven air pump system for opening and closing a longitudinal railcar door

#9
20210046956
2021-02-18

Centering apparatus for hopper car doors

#10
20210009169
2021-01-14

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

#11
20200398872
2020-12-24

Rapid discharge door locking system

#12
20200369300
2020-11-26

Mechanism for longitudinal door systems

#13
20200317231
2020-10-08

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

#14
20200240193
2020-07-30

RAILROAD HOPPER CAR BODY FITTINGS

#15
20200023867
2020-01-23

Railroad hopper car

#16
20190016349
2019-01-17

Rapid discharge door locking system

#17
20180305967
2018-10-25

Railroad hopper car body fittings

#18
20180281824
2018-10-04

Mechanism for longitudinal door systems

#19
20180201279
2018-07-19

Railcar with progressive opening longitudinal gates

#20
20180180129
2018-06-28

Pre-loaded compression strut

#21
20180001905
2018-01-04

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

#22
20170107751
2017-04-20

Compartment and bottom door thereof

#23
20160137210
2016-05-19

Rail road hopper car

#24
20150336591
2015-11-26

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

#25
20150114253
2015-04-30

Railroad hopper car and door mechanism therefor

#26
20150096459
2015-04-09

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

#27
20140331892
2014-11-13

Rail road hopper car ridge fittings

#28
20140261070
2014-09-18

Outlet gate assembly for hopper cars

#29
20140261069
2014-09-18

Railroad hopper car and door mechanism therefor

#30
20140261068
2014-09-18

Railroad car and door mechanism therefor

#31
20140216299
2014-08-07

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

#32
20140158017
2014-06-12

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

#33
20130160670
2013-06-27

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

#34
20130032055
2013-02-07

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

#35
20130019776
2013-01-24

BALLAST HOPPER CAR

#36
20130000509
2013-01-03

Ballast hopper car discharge door control system

#37
20120312382
2012-12-13

Control valve assembly for load carrying vehicles

#38
20120285346
2012-11-15

Railroad car and door mechanism therefor

#39
20120199041
2012-08-09

Rail road hopper car ridge fittings

#40
20120042804
2012-02-23

Rail road hopper car ridge fittings

#41
20110248195
2011-10-13

Control valve assembly for load carrying vehicles

#42
20110179969
2011-07-28

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

#43
20110041724
2011-02-24

Railroad gondola car structure and mechanism therefor

#44
20110025481
2011-02-03

System and related method for visually indicating a condition of a lock on a railroad hopper car

#45
20110006592
2011-01-13

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

#46
20100319570
2010-12-23

Rail road hopper car structure

#47
20100251922
2010-10-07

Railroad gondola car structure and mechanism therefor

#48
20100219148
2010-09-02

Railroad gondola car structure and mechanism therefor

#49
20100132588
2010-06-03

Control valve assembly for load carrying vehicles

#50
20100132587
2010-06-03

Rail road hopper car ridge fittings

#51
20100107924
2010-05-06

Hopper car gate with a laterally opening door

#52
20080236438
2008-10-02

Railcar with discharge control system

#53
20080223252
2008-09-18

Hopper car with lading dislodgement fittings and method of operation

#54
20080066642
2008-03-20

Rail road hopper car fittings and method of operation

#55
20070175357
2007-08-02

Hopper railcar with automatic individual door system

#56
20070084378
2007-04-19

Hopper cars with one or more discharge control systems

#57
20070068417
2007-03-29

Sliding gate actuating mechanism

#58
20060254456
2006-11-16

Railroad hopper car transverse door actuating mechanism

#59
20060185553
2006-08-24

Railroad hopper car door actuating mechanism

#60
20060185552
2006-08-24

Railcar with discharge control system

#61
20060156947
2006-07-20

Hopper closure assembly with telescoping gate and method of using same

#62
20050263032
2005-12-01

Mechanism for selectively operating hopper doors of a railroad car

#63
20050092202
2005-05-05

Railroad hopper car longitudinal door actuating mechanism

#64
20050056186
2005-03-17

Railway hopper car with longitudinal discharge openings

#65
20050056185
2005-03-17

Railcar with discharge control system