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61. 发明授权

US3588610A Frequency shift relaying protective network with noise control 失效
标题翻译：频率转换保护网络与噪声控制
公开(公告)号：US3588610A
公开(公告)日：1971-06-28
申请号：US3588610D
申请日：1969-09-30
申请人： WESTINGHOUSE ELECTRIC CORP
发明人： PEREZ-STABLE NICOLAS L
IPC分类号： H02H3/26 , H01H9/54 , H02H1/00 , H04L27/10 , H02H3/28
CPC分类号： H02H1/0084 , H04L27/10 , Y10T307/852
摘要： A FREQUENCY SHIFT OPERATED RELAYING SYSTEM HAVING MEANS FOR PREVENTING TRIPPING IN THE PRESENCE OF NOISE AND IN WHICH MEANS IS ALSO PROVIDED TO PERMIT TRIPPING IN THE PRESENCE OF NOISE WHEN THE TRIP FREQUENCY IS MAINTAINED FOR A MINIMUM INTERVAL INDICATIVE OF THE EXISTENCE OF A FAULT CONDITION.

62. 发明授权

US3579040A Desensitizing circuit for differential relay 失效
标题翻译：用于差分继电器的减阻电路
公开(公告)号：US3579040A
公开(公告)日：1971-05-18
申请号：US3579040D
申请日：1969-02-18
申请人： WESTINGHOUSE ELECTRIC CORP
发明人： TENENBAUM NATHANIEL D
IPC分类号： H02H7/045 , H02H3/28
CPC分类号： H02H7/045
摘要： A differential type protective relaying apparatus for a powertransforming device; the relaying apparatus having first and second switches controlled by first and second operate elements and first and second restraint elements; said first operate element being energized as a function of the difference between the input and output energy of the transferring device and said first restraint element being energized as a function of the amount of energy passed through the transferring device and there is provided a second circuit, energized as a consequence of an overvoltage applied to the transferring device to supply additional energization to the first restraint element; the second operate element being energized as a function of the magnitude of the fundamental frequency portion of the difference between the input and output energy to and from the transferring device; and the second restraint element being energized as a function of the magnitude of the second harmonic frequency portion of the difference between the input and output energy to and from the transferring device. The relaying apparatus being effective to disconnect the power-transferring device when one or the other of the first or the second operate element overcomes its associated restraint element.

63. 发明授权

US3579037A Portable tool 失效
公开(公告)号：US3579037A
公开(公告)日：1971-05-18
申请号：US3579037D
申请日：1968-11-12
申请人： OCEANAUTIC MFG AND RESEARCH CO
发明人： HACKMAN DONALD J , LEGUE RONALD L , HARRIS JEREMY M , ROOP DONALD E
IPC分类号： H01H9/06 , H02H3/33 , H02K5/128 , H02K7/14 , H02K17/30 , H02H3/28 , H02H7/26
CPC分类号： H02H3/33 , H01H9/06 , H02K5/1285 , H02K7/145 , H02K17/30
摘要： An electric motor-driven portable tool for use underwater. The tool and motor are insensitive to water depth and corrosion because of the tool design and choice of materials. To minimize the danger of electrical shock to the human operator, the tool is used in combination with a safety trip circuit which is effective to cut off all power to the tool in less than 30 milliseconds in the event of a short circuit or even a minimal current leak in either the tool or cable supplying current to the tool. Additionally, the tool motor is insulated from the housing, the tool housing is grounded by a third ground or neutral wire in the power cable and the cable has a metal sheath which is also grounded at or near the power source.

64. 发明授权

US3548259A Ground fault circuit interrupter with undervoltage release 失效
标题翻译：接地故障电路中断与欠压释放
公开(公告)号：US3548259A
公开(公告)日：1970-12-15
申请号：US3548259D
申请日：1969-03-03
申请人： HUBBELL INC HARVEY
发明人： MCDONALD THOMAS M
IPC分类号： H02H3/33 , H02H3/00 , H02H3/10 , H02H3/14 , H02H3/28
CPC分类号： H02H3/338

65. 发明授权

US3535590A High sensitivity electromechanical actuators 失效
标题翻译：高灵敏度电动执行器
公开(公告)号：US3535590A
公开(公告)日：1970-10-20
申请号：US3535590D
申请日：1968-12-09
申请人： MAYER FERDY
发明人： MAYER FERDY
IPC分类号： H01H39/00 , H01H71/12 , H02H3/02 , H02H3/33 , H01H9/20 , H02H3/28 , H02H7/26
CPC分类号： H01H39/00 , H01H71/127 , H02H3/021 , H02H3/33

66. 发明授权

US3522478A Directional relay for circuit interrupters 失效
标题翻译：电路中断的方向继电器
公开(公告)号：US3522478A
公开(公告)日：1970-08-04
申请号：US3522478D
申请日：1967-03-10
申请人： MC GRAW EDISON CO
发明人： REIS NORBERT J
IPC分类号： H02H3/08 , H02H3/38 , H02H7/26 , H02H3/28
CPC分类号： H02H3/382 , H02H3/081

67. 发明授权

US3512045A Ground fault responsive apparatus for electric power distribution apparatus 失效
标题翻译：用于电力分配设备的地面故障响应装置
公开(公告)号：US3512045A
公开(公告)日：1970-05-12
申请号：US3512045D
申请日：1968-06-28
申请人： GEN SIGNAL CORP , O Z ELECTRICAL MFG CO INC
发明人： TIPTON WILLIAM C , PHILIBERT ROBERT A , SANGER DAVID M
IPC分类号： H01F38/38 , H01H83/14 , H02H1/04 , H02H3/347 , H02H3/28
CPC分类号： H01F38/38 , H01H83/144 , H02H1/04 , H02H3/347

68. 发明授权

US3448341A Electrical load protection device 失效
标题翻译：电气负载保护装置
公开(公告)号：US3448341A
公开(公告)日：1969-06-03
申请号：US3448341D
申请日：1968-09-19
申请人： NASA
发明人： CASEY LEWIS O
IPC分类号： H01H85/44 , H02H3/28 , H01H85/14
CPC分类号： H01H85/44

69. 发明授权

US3443158A Fault current recorder and indicator for electrical circuits 失效
标题翻译：故障电流记录仪和电路指示器
公开(公告)号：US3443158A
公开(公告)日：1969-05-06
申请号：US3443158D
申请日：1966-09-08
申请人： GEN ELECTRIC
发明人： ARNDT RICHARD H
IPC分类号： H01H83/14 , H02H1/02 , G01R31/08 , H02H3/28
CPC分类号： H01H83/14

70. 发明授权

US3437878A Control system for improving transient stability of a.c. system by joint use of d.c. system 失效
标题翻译：控制系统通过联合使用直流系统改进交流系统的瞬态稳定性
公开(公告)号：US3437878A
公开(公告)日：1969-04-08
申请号：US3437878D
申请日：1965-09-13
申请人： DENRYOKU CHUO KENKYUJO
发明人： MACHIDA TAKEHIKO
IPC分类号： H02H7/26 , H02J3/36 , H02H3/28
CPC分类号： H02H7/268 , H02J3/36 , Y02E60/60 , Y10T307/422 , Y10T307/729

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