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1. 发明申请

US20080302921A1 Railroad Switch Indicator 有权
标题翻译：铁路开关指示灯
公开(公告)号：US20080302921A1
公开(公告)日：2008-12-11
申请号：US11760374
申请日：2007-06-08
申请人： David A. Schalk
发明人： David A. Schalk
IPC分类号： B61L9/02 , B61L5/00
CPC分类号： B61L5/10 , B61L9/02
摘要： A railroad switch indicator for visually signaling the position of a pair of railroad switchpoints independently of the mechanism for operating the switch. The indicator includes a sleeve with windows in which is reciprocated a slide with reflectors selected ones of which are visible through the windows of the sleeve for indicating safety conditions of the track. An arm with an upwardly extending finger engages the slide and is attached to the transverse bar that moves the switchpoints for reciprocation of the slide within the sleeve conjointly with movement of the switchpoints by the transverse bar.
摘要翻译：铁路开关指示器，用于视觉地信号地指示一对铁路开关点的位置，而与用于操作开关的机构无关。指示器包括具有窗口的套筒，其中与其中的反射器往复运动，滑块通过套筒的窗口可见，以指示轨道的安全条件。具有向上延伸的手指的臂与滑动件接合并且附接到横向杆，该横向杆移动开关点，用于使滑动件在套筒内随着横向杆的移动而随着开关点的移动而往复运动。

2. 发明授权

US07735784B2 Railroad switch indicator 有权
标题翻译：铁路开关指示灯
公开(公告)号：US07735784B2
公开(公告)日：2010-06-15
申请号：US11760374
申请日：2007-06-08
申请人： David A. Schalk
发明人： David A. Schalk
IPC分类号： B61L5/12
CPC分类号： B61L5/10 , B61L9/02
摘要： A railroad switch indicator for visually signaling the position of a pair of railroad switchpoints independently of the mechanism for operating the switch. The indicator includes a sleeve with windows in which is reciprocated a slide with reflectors selected ones of which are visible through the windows of the sleeve for indicating safety conditions of the track. An arm with an upwardly extending finger engages the slide and is attached to the transverse bar that moves the switchpoints for reciprocation of the slide within the sleeve conjointly with movement of the switchpoints by the transverse bar.
摘要翻译：铁路开关指示器，用于视觉地信号地指示一对铁路开关点的位置，而与用于操作开关的机构无关。指示器包括具有窗口的套筒，其中与其中的反射器往复运动，滑块通过套筒的窗口可见，以指示轨道的安全条件。具有向上延伸的手指的臂与滑动件接合并且附接到横向杆，该横向杆移动开关点，用于使滑动件在套筒内随着横向杆的移动而随着开关点的移动而往复运动。

3. 发明授权

US11919553B1 Railroad switch position indicator 有权
公开(公告)号：US11919553B1
公开(公告)日：2024-03-05
申请号：US17069105
申请日：2020-10-13
申请人： David A. Schalk
发明人： David A. Schalk
IPC分类号： B61L5/16
CPC分类号： B61L5/16
摘要： A railroad switch position indicator configured for direct attachment to switch points which guide a train from one track to another. The indicator has first and second rotating reflector signals spring biased into a neutral position signaling caution. The first rotating reflector signal rotates in response to movement of the switch points against the spring bias while the second rotating reflector signal remains in neutral position when the switch points are lined for a first direction. The second rotating reflector signal rotates in response to movement of the switch points against the spring bias while the first set of reflectors remain in neutral position when the switch points are lined for a second direction.

4. 发明授权

US10766511B2 Cable driven railroad switch indicator 有权
公开(公告)号：US10766511B2
公开(公告)日：2020-09-08
申请号：US15918015
申请日：2018-03-12
申请人： David A. Schalk
发明人： David A. Schalk
IPC分类号： B61L5/12 , B61L9/02 , B61L9/00 , B61L5/10 , B61L9/04
摘要： A railroad switch indicator, that operates independently of the mechanism for operating the switch, for signaling the position of the switchpoints via a flexible mechanical cable connected to a railroad switch amplifier mechanism. The railroad switch amplifier mechanism has linkage members attached to a crossbar connecting inner stockrails and to a pivoted lever arm, the output arm of which is attached to the mechanical cable. The flexible mechanical cable allows the railroad switch indicator to be positioned remotely from the switchpoints and switch amplifier mechanism in a highly visible and easily serviced location.

5. 发明申请

US20180201283A1 CABLE DRIVEN RAILROAD SWITCH INDICATOR 审中-公开
公开(公告)号：US20180201283A1
公开(公告)日：2018-07-19
申请号：US15918015
申请日：2018-03-12
申请人： DAVID A. SCHALK
发明人： DAVID A. SCHALK
IPC分类号： B61L5/10 , B61L9/04 , B61L9/02
摘要： A railroad switch indicator, that operates independently of the mechanism for operating the switch, for signaling the position of the switchpoints via a flexible mechanical cable connected to a railroad switch amplifier mechanism. The railroad switch amplifier mechanism has linkage members attached to a crossbar connecting inner stockrails and to a pivoted lever arm, the output arm of which is attached to the mechanical cable. The flexible mechanical cable allows the railroad switch indicator to be positioned remotely from the switchpoints and switch amplifier mechanism in a highly visible and easily serviced location.

6. 发明授权

US08695928B1 Railroad switch indicator with distance amplifier 有权
标题翻译：铁路开关指示器带距离放大器
公开(公告)号：US08695928B1
公开(公告)日：2014-04-15
申请号：US12843011
申请日：2010-07-24
申请人： David A. Schalk
发明人： David A. Schalk
IPC分类号： B61L5/12
CPC分类号： B61L5/10
摘要： A railroad switch indicator for visually signaling the position of a pair of railroad switchpoints independently of the mechanism for operating the switch. The indicator includes a sleeve with windows in which is reciprocated a slide with reflectors selected ones of which are visible through the windows of the sleeve for indicating safety conditions of the track. An arm with an upwardly extending finder is attached to a transverse bar that moves the switchpoints. The finger engages the slide through lever arms. When the finger moves with the switchpoints, the lever arms move the slide a distance greater than the distance moved by the finger thereby increasing the sensitivity of the railroad switch indicator to movement of the switchpoints. Movement of the slide by the finger is resisted by springs or counterweights which urge the slide into a mid or default position signaling caution.
摘要翻译：铁路开关指示器，用于视觉地信号地指示一对铁路开关点的位置，而与用于操作开关的机构无关。指示器包括具有窗口的套筒，其中与其中的反射器往复运动，滑块通过套筒的窗口可见，以指示轨道的安全条件。具有向上延伸的取景器的臂连接到移动开关点的横杆上。手指通过杠杆臂与滑块接合。当手指随着开关点移动时，杠杆臂使滑块移动一段距离大于手指移动的距离，从而增加铁路开关指示器对开关点移动的灵敏度。手指滑动的运动受到弹簧或配重的抵抗，这些弹簧或配重促使滑块进入中间或默认位置，表示警告。

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