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公开(公告)号：US20190382037A1
公开(公告)日：2019-12-19
申请号：US16552483
申请日：2019-08-27
发明人： Derick Call , Carl Banks , Nicholas Van Derzee , Steven Michael Barnhart , James Lewis Vendlinski
摘要： A railway vehicle parking brake that can provide the appropriate tension to the braking system using a motor, a brake chain drum interconnected to the motor to take up or release a brake chain, a load arm deflects in response to tension in the brake chain, and a switch that is closed by the load arm when it deflects. A movable sheave interconnects the brake chain and the load arm and is positioned between the brake chain drum and a fixed sheave over which the brake chain is looped. A control method considers the position of the first switch to determine whether to the motor off when applying the brakes and the amount of current being drawn by the motor to determine whether to the motor off because of a system failure.
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公开(公告)号：US10011289B2
公开(公告)日：2018-07-03
申请号：US15356948
申请日：2016-11-21
IPC分类号： B60T17/16 , B61H13/34 , B61H13/02 , F16D127/06
CPC分类号： B61H13/34 , B60T17/16 , B61H13/02 , F15B15/261 , F16D2127/06
摘要： A locking mechanism for a brake cylinder that has a tube surrounding the hollow shaft of the brake cylinder with a first set of teeth formed along an outer surface thereof. A gate having a second set of teeth corresponding to the first set of teeth is moveable in between a first position, wherein the first and second set of teeth are engaged to prevent movement of the brake cylinder piston, and a second position where the first and second set of teeth are disengaged to allow movement of the brake cylinder piston. A spring biases the gate into the locked position and a supplemental piston responsive to a source of brake pipe pressure can move the gate into the unlocked position so that the main piston is free to move.
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公开(公告)号：US20190023291A1
公开(公告)日：2019-01-24
申请号：US15652434
申请日：2017-07-18
发明人： Derick Call , Carl Banks , Nicholas Van Derzee , Steven Michael Barnhart , James Lewis Vendlinski
IPC分类号： B61H13/02
摘要： A railway vehicle parking brake that can provide the appropriate tension to the braking system using a motor, a brake chain drum interconnected to the motor to take up or release a brake chain, a load arm deflects in response to tension in the brake chain, and a switch that is closed by the load arm when it deflects. A movable sheave interconnects the brake chain and the load arm and is positioned between the brake chain drum and a fixed sheave over which the brake chain is looped. A control method considers the position of the first switch to determine whether to the motor off when applying the brakes and the amount of current being drawn by the motor to determine whether to the motor off because of a system failure.
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公开(公告)号：US11260887B2
公开(公告)日：2022-03-01
申请号：US16552483
申请日：2019-08-27
发明人： Derick Call , Carl Banks , Nicholas Van Derzee , Steven Michael Barnhart , James Lewis Vendlinski
摘要： A railway vehicle parking brake that can provide the appropriate tension to the braking system using a motor, a brake chain drum interconnected to the motor to take up or release a brake chain, a load arm deflects in response to tension in the brake chain, and a switch that is closed by the load arm when it deflects. A movable sheave interconnects the brake chain and the load arm and is positioned between the brake chain drum and a fixed sheave over which the brake chain is looped. A control method considers the position of the first switch to determine whether to the motor off when applying the brakes and the amount of current being drawn by the motor to determine whether to the motor off because of a system failure.
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公开(公告)号：US20180141574A1
公开(公告)日：2018-05-24
申请号：US15356948
申请日：2016-11-21
CPC分类号： B61H13/34 , B60T17/16 , B61H13/02 , F15B15/26 , F16D2127/06
摘要： A locking mechanism for a brake cylinder that has a tube surrounding the hollow shaft of the brake cylinder with a first set of teeth formed along an outer surface thereof. A gate having a second set of teeth corresponding to the first set of teeth is moveable in between a first position, wherein the first and second set of teeth are engaged to prevent movement of the brake cylinder piston, and a second position where the first and second set of teeth are disengaged to allow movement of the brake cylinder piston. A spring biases the gate into the locked position and a supplemental piston responsive to a source of brake pipe pressure can move the gate into the unlocked position so that the main piston is free to move.
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