公开(公告)号：US11548537B2

公开(公告)日：2023-01-10

申请号：US16992884

申请日：2020-08-13

Applicant: Herzog Railroad Services, Inc.

Inventor： Nathan A. Landes ,  Stephen Bedingfield ,  Michael Staihr ,  David Smith ,  Jacob D. Herzog ,  Tony Shirk ,  Daniel T. Marshall

IPC: F15B15/14 ,  B61D7/28 ,  B61D7/18 ,  E05F1/10 ,  E05F15/53 ,  E05F1/14 ,  F15B15/06 ,  F15B11/20 ,  B61D7/02

Abstract: A centering apparatus for bi-directionally pivotable hopper doors. The apparatus is coupled between a frame of a hopper car and a bell crank of a hopper door. The apparatus includes a housing with a piston extending from one end. An end of the piston within the housing includes a piston head. A pair of coil springs are disposed within the housing on opposite sides of the piston head and counteract one another to bias the piston head toward the center of the housing and thus bias the hopper door toward a closed state. In a second configuration the apparatus includes a double-acting actuator with a pair of independent piston assemblies. An actuation system coupled to the actuator maintains the actuator and an associated hopper door in a closed position in a normal state and returns the hopper door to the closed position upon a failure in the system.

公开(公告)号：US10787109B2

公开(公告)日：2020-09-29

申请号：US15790664

申请日：2017-10-23

Applicant: Herzog Railroad Services, Inc.

Inventor： Nathan A. Landes ,  Khristopher R. Wall ,  Stephen Bedingfield ,  Douglas P. Thornton ,  Patrick R. Harris

IPC: B60P1/56 ,  E01B27/02 ,  F15B21/08

Abstract: A system and method for operating a ballast car hopper door includes logic and control circuitry, a hydraulic actuator, a door position sensor, and one or more sensors operable to measure system operational parameters. During normal operation of the hopper door the logic and control circuitry records the system operational parameters. In the event of failure, or absence, of the door position sensor the control circuitry compares real-time data to recorded data to maintain operation and correct positioning of the hopper door.

公开(公告)号：US20210046956A1

公开(公告)日：2021-02-18

申请号：US16992884

申请日：2020-08-13

Applicant: Herzog Railroad Services, Inc.

Inventor： Jacob D. Herzog ,  Tony Shirk ,  Daniel T. Marshall ,  Stephen Bedingfield

IPC: B61D7/28 ,  B61D7/02 ,  B61D7/18 ,  E05F1/10 ,  E05F15/53 ,  E05F1/14 ,  F15B15/14 ,  F15B15/06 ,  F15B11/20

Abstract: A centering apparatus for bi-directionally pivotable hopper doors. The apparatus is coupled between a frame of a hopper car and a bell crank of a hopper door. The apparatus includes a housing with a piston extending from one end. An end of the piston within the housing includes a piston head. A pair of coil springs are disposed within the housing on opposite sides of the piston head and counteract one another to bias the piston head toward the center of the housing and thus bias the hopper door toward a closed state. In a second configuration the apparatus includes a double-acting actuator with a pair of independent piston assemblies. An actuation system coupled to the actuator maintains the actuator and an associated hopper door in a closed position in a normal state and returns the hopper door to the closed position upon a failure in the system.

公开(公告)号：US20180134201A1

公开(公告)日：2018-05-17

申请号：US15790664

申请日：2017-10-23

Applicant: Herzog Railroad Services, Inc.

Inventor： Nathan A. Landes ,  Khristopher R. Wall ,  Stephen Bedingfield ,  Douglas P. Thornton ,  Patrick R. Harris

IPC: B60P1/56 ,  F15B21/08

Abstract: A system and method for operating a ballast car hopper door includes logic and control circuitry, a hydraulic actuator, a door position sensor, and one or more sensors operable to measure system operational parameters. During normal operation of the hopper door the logic and control circuitry records the system operational parameters. In the event of failure, or absence, of the door position sensor the control circuitry compares real-time data to recorded data to maintain operation and correct positioning of the hopper door.