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1. 发明授权

US11942776B2 Electric transmission line ground fault prevention systems using dual parameter monitoring with high sensitivity relay devices in parallel with low sensitivity relay devices 有权
公开(公告)号：US11942776B2
公开(公告)日：2024-03-26
申请号：US17821651
申请日：2022-08-23
申请人： Robert B. Stuart , Ronald E. Smith
发明人： Robert B. Stuart , Ronald E. Smith
IPC分类号： H02H3/00 , H02H1/00 , H02H3/16 , H02H9/08
CPC分类号： H02H3/162 , H02H1/0007
摘要： A system for preventing ground fault in a three-phase electric transmission line system caused by a line break, includes: the transmission lines, a programmable relay protection system, including a plurality of existing low sensitivity (LS) relays and a corresponding set of high sensitivity (HS) relays in parallel with the is relays. The HS relays on each line are programmed to include: preset acceptable operating parameter ranges of at least two electric operating conditions, at least one high sensitivity instantaneous undercurrent and at least one high sensitivity condition selected from line differential overcurrent and negative sequence overcurrent (and combinations thereof); monitoring; permitting closed circuit operation when all of the lines show that the two operating conditions are within the preset acceptable operating parameter ranges; tripping a circuit breaker on a broken line when that line shows that the two operating conditions are outside the preset parameter ranges; and shutting down power to the broken line before it otherwise causes a ground fault or other short circuit.

2. 发明授权

US11769998B2 Electric transmission line ground fault prevention systems using dual, high sensitivity monitoring devices 有权
公开(公告)号：US11769998B2
公开(公告)日：2023-09-26
申请号：US17693504
申请日：2022-03-14
申请人： Robert B. Stuart , Ronald E. Smith
发明人： Robert B. Stuart , Ronald E. Smith
IPC分类号： H02H3/08 , H02H3/02 , H02H3/16
CPC分类号： H02H3/083 , H02H3/021 , H02H3/165
摘要： A system for preventing ground fault in a three-phase electric transmission line system caused by a line break, includes: the transmission lines, a programmable relay protection system, including a plurality of relay devices on each line, programmed to include: preset parameter ranges of at least two electric operating conditions, at least one high sensitivity instantaneous undercurrent and at least one high sensitivity condition selected from line differential overcurrent and negative sequence overcurrent (and combinations thereof), the preset ranges being acceptable operating parameter ranges; monitoring; permitting closed circuit operation when all of the lines show that the two operating conditions are within the preset acceptable operating parameter ranges; tripping a circuit breaker on a broken line when that line shows that the two operating conditions are outside the preset parameter ranges; and shutting down power to the broken line before it otherwise causes a ground fault or other short circuit.

3. 发明授权

US11852692B1 Electric distribution line ground fault prevention systems using dual parameter monitoring with high sensitivity relay devices 有权
公开(公告)号：US11852692B1
公开(公告)日：2023-12-26
申请号：US18064152
申请日：2022-12-09
申请人： Robert B. Stuart , Ronald E. Smith
发明人： Robert B. Stuart , Ronald E. Smith
IPC分类号： G01R31/52 , H03K19/20 , G01R31/08
CPC分类号： G01R31/52 , G01R31/085 , G01R31/086 , H03K19/20
摘要： A system for preventing ground fault in a three-phase electric distribution line system caused by a line break, includes: the transmission lines, a programmable relay protection system, including high sensitivity. The HS relays on each line are programmed to include: preset acceptable operating parameter ranges of at least two electric operating conditions, namely, high sensitivity instantaneous undercurrent and at least one high sensitivity negative sequence overcurrent; monitoring; permitting closed circuit operation when all of the lines show that the two operating conditions are within the preset acceptable operating parameter ranges; tripping a circuit breaking device on a broken line when that line shows that the two operating conditions are outside the preset parameter ranges; and shutting down power to the broken line before it otherwise causes a ground fault or other short circuit. A third parameter monitoring: rate of change in current is preferred.

4. 发明公开

US20230261459A1 ELECTRIC TRANSMISSION LINE GROUND FAULT PREVENTION SYSTEMS USING DUAL, HIGH SENSITIVITY MONITORING DEVICES 审中-公开
公开(公告)号：US20230261459A1
公开(公告)日：2023-08-17
申请号：US17693504
申请日：2022-03-14
申请人： Robert B. Stuart , Ronald E. Smith
发明人： Robert B. Stuart , Ronald E. Smith
IPC分类号： H02H3/08 , H02H3/16 , H02H3/02
CPC分类号： H02H3/083 , H02H3/165 , H02H3/021
摘要： A system for preventing ground fault in a three-phase electric transmission line system caused by a line break, includes: the transmission lines, a programmable relay protection system, including a plurality of relay devices on each line, programmed to include: preset parameter ranges of at least two electric operating conditions, at least one high sensitivity instantaneous undercurrent and at least one high sensitivity condition selected from line differential overcurrent and negative sequence overcurrent (and combinations thereof), the preset ranges being acceptable operating parameter ranges; monitoring; permitting closed circuit operation when all of the lines show that the two operating conditions are within the preset acceptable operating parameter ranges; tripping a circuit breaker on a broken line when that line shows that the two operating conditions are outside the preset parameter ranges; and shutting down power to the broken line before it otherwise causes a ground fault or other short circuit.

5. 发明公开

US20230261460A1 Electric Transmission Line Ground Fault Prevention Systems Using Dual Parameter Monitoring with High Sensitivity Relay Devices in Parallel with Low Sensitivity Relay Devices 审中-公开
公开(公告)号：US20230261460A1
公开(公告)日：2023-08-17
申请号：US17821651
申请日：2022-08-23
申请人： Robert B. Stuart , Ronald E. Smith
发明人： Robert B. Stuart , Ronald E. Smith
IPC分类号： H02H3/16 , H02H1/00
CPC分类号： H02H3/162 , H02H1/0007
摘要： A system for preventing ground fault in a three-phase electric transmission line system caused by a line break, includes: the transmission lines, a programmable relay protection system, including a plurality of existing low sensitivity (LS) relays and a corresponding set of high sensitivity (HS) relays in parallel with the is relays. The HS relays on each line are programmed to include: preset acceptable operating parameter ranges of at least two electric operating conditions, at least one high sensitivity instantaneous undercurrent and at least one high sensitivity condition selected from line differential overcurrent and negative sequence overcurrent (and combinations thereof); monitoring; permitting closed circuit operation when all of the lines show that the two operating conditions are within the preset acceptable operating parameter ranges; tripping a circuit breaker on a broken line when that line shows that the two operating conditions are outside the preset parameter ranges; and shutting down power to the broken line before it otherwise causes a ground fault or other short circuit.

6. 发明授权

US4185361A Locking device 失效
标题翻译：锁定设备
公开(公告)号：US4185361A
公开(公告)日：1980-01-29
申请号：US900054
申请日：1978-04-26
申请人： Robert B. Stuart
发明人： Robert B. Stuart
IPC分类号： A63C11/00 , E05B73/00 , A44B21/00 , F16L33/00
CPC分类号： E05B73/0005 , A63C11/006 , Y10T24/14 , Y10T70/409 , Y10T70/5009
摘要： A locking device for skis or the like comprises two lengths of cable having loops formed at their remote ends and an intervening length of chain. By inserting the free ends of the cables through appropriate links in the chain and thereafter locking the free ends together, the size of the loops can be adjusted so that objects to be locked together can be snugly embraced by the opposite cable lengths.
摘要翻译：用于滑雪板等的锁定装置包括在其远端形成有环的两段电缆和链的中间长度。通过将电缆的自由端插入链条中的适当链接，然后将自由端锁定在一起，可以调整环路的尺寸，使得被锁定在一起的物体可以被相对的电缆长度紧密地包围。

7. 发明公开

US20240192286A1 Electric Distribution Line Ground Fault Prevention Systems Using Dual Parameter High Sensitivity Relay Device, Monitoring Small Current Reduction With Small Increase In Negative Sequence Current 审中-公开
公开(公告)号：US20240192286A1
公开(公告)日：2024-06-13
申请号：US18464596
申请日：2023-09-11
申请人： Robert B. Stuart
发明人： Robert B. Stuart
IPC分类号： G01R31/52 , G01R31/08
CPC分类号： G01R31/52 , G01R31/086 , G01R31/088
摘要： In a system for preventing ground fault or other short circuit in electric distribution line system, caused by a break in a line, utilizing programmable relay protection in a plurality of relay devices programmed to monitor high sensitivity parameters, the improvement of refine protection, which includes: in MODULE A, a protection subsystem having sufficient hardware and software that is programmed to detect changes in negative sequence overcurrent and instantaneous undercurrent on a main distribution line as well as a single phase tap line, utilizing a timer delay to calculate the changes over small periods of time. Second and third embodiments include substituting negative sequence with zero sequence readings in MODULE B or combining both MODULES.

8. 发明授权

US4100994A Marine exhaust silencer 失效
标题翻译：船用排气消音器
公开(公告)号：US4100994A
公开(公告)日：1978-07-18
申请号：US705683
申请日：1976-07-15
申请人： Robert B. Stuart
发明人： Robert B. Stuart
IPC分类号： F01N3/04 , F01N13/00 , F02B61/04
CPC分类号： F01N13/004 , F01N3/04 , F01N2590/02 , F02B61/045 , Y02T10/20
摘要： A silencer quiets the exhaust output from a marine engine by injecting a spray of cooling water into the exhaust passageway to mix with and cool the exhaust gases before output from the passageway. The exhaust passageway preferably enlarges substantially in cross-sectional area in the region where the mixing occurs between the injected water and the exhaust gases for enhancing the cooling effect. An inlet scoop receives water as the boat moves forward, and the water is forced through a line and into the exhaust passageway in a way that breaks the water into drops for contacting and cooling the exhaust gases. A mute that is preferably conical in shape and centered in the exhaust outlet also cooperates to reduce the exhaust noise.
摘要翻译：消声器通过在从通道输出之前将喷射的冷却水喷射到排气通道中来与船用发动机排气输出混合并冷却废气。排气通道优选地在注入的水和废气之间发生混合的区域中基本上在横截面积上增大，以增强冷却效果。当船向前移动时，入口勺接收水，水被迫通过管线并进入排气通道，以将水分解成液滴以接触和冷却废气。优选圆锥形并且在排气出口中心的静音也配合以减少排气噪声。

9. 发明授权

US3937173A Deep-V tunnel stern boat 失效
标题翻译：深V型隧道船尾船
公开(公告)号：US3937173A
公开(公告)日：1976-02-10
申请号：US504874
申请日：1974-09-11
申请人： Robert B. Stuart
发明人： Robert B. Stuart
IPC分类号： B63H5/16
CPC分类号： B63H5/16
摘要： A deep-V tunnel stern boat has the forward portion of the tunnel shaped for uniformly distributing the resurgent flow across the width of the tunnel and for smoothly forming the entrance curve to the tunnel to optimize a suction tending to lift the water into the tunnel. This is done by recessing port and starboard halves of the tunnel into the sides of the hull bottom so the tops of the tunnel halves are approximately parallel with the sides of the hull bottom at the deep-V angle and meet at an obtuse angle above the keel line. The tops of the tunnel halves are gradually shaped into a semi-cylinder around the upper half of the propeller, the tunnel sides are flared outward aft of the propeller, and exhaust ports are located in the flared tunnel sides. Such tunnels are also adapted for twin tunnel stern boats.
摘要翻译：深V型隧道尾船具有隧道的前部，其形状适合于将复原流均匀地分布在隧道的宽度上，并且用于平稳地形成到隧道的入口曲线，以优化吸力以将水提升到隧道内。这是通过将隧道的舷侧和右舷的半部分凹陷进入船体底部的侧面，使得隧道半部的顶部在深V角处与船体底部的侧面近似平行，并且以与之相对的钝角龙骨线。隧道半部的顶部在螺旋桨的上半部分周围逐渐成形为半圆柱形，隧道两侧在螺旋桨的外侧向外扩张，排气口位于扩口的隧道两侧。这种隧道也适用于双桅船尾船。

10. 发明授权

US5242153A Dual-tire foreign-object removing apparatus 失效
标题翻译：双轮胎异物去除装置
公开(公告)号：US5242153A
公开(公告)日：1993-09-07
申请号：US919765
申请日：1992-07-24
申请人： Robert B. Stuart
发明人： Robert B. Stuart
IPC分类号： B66F19/00
CPC分类号： B66F19/00
摘要： A dual-tire foreign-object removing apparatus includes a web which is trainable about a foreign object lodged between dual vehicle tires, a rod for applying a pulling force to the web and the foreign object and a reaction element which provides a stand-off from the tires for the rod.
摘要翻译：一种双轮胎异物去除装置，包括能够围绕被放置在双车轮胎之间的异物进行训练的腹板，用于向腹板和异物施加拉力的杆以及提供离开的反作用力用于杆的轮胎。

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