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公开(公告)号:US20210320521A1
公开(公告)日:2021-10-14
申请号:US16845274
申请日:2020-04-10
发明人: Michael Rose
IPC分类号: H02J9/06 , H02J7/02 , H02M7/219 , H02M7/5387 , H02M7/5395
摘要: A power supply circuit for powering components of a facility are disclosed. The power supply circuit may include a power transformer, a power input terminal, a power output terminal, a bridge, a relay, and a control circuit. The relay is connected between the power input terminal and the power output terminal. A primary side of the power transformer is coupled between the relay and the power output terminal. The bridge is coupled to the secondary side of the power transformer. In a normal power mode, the control circuit closes the relay and operates the bridge as a rectifier. In an emergency power mode, the control circuit opens the relay and operates the bridge as a pulse width modulator. In this manner, the bridge and the power transformer can be used both to charge a battery during normal operation and generate emergency AC power from the battery.
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公开(公告)号:US20230227286A1
公开(公告)日:2023-07-20
申请号:US18096689
申请日:2023-01-13
CPC分类号: B66B1/3492 , B66B5/02
摘要: An elevator level warning system is provided, along with methods of use thereof. An elevator level warning system may include a controller, a laser, a sensor, and a reflector. The reflector may be a structured reflector. The elevator level warning system may also include a sensor board. The elevator level warning system may also include an indicator. The elevator level warning system may be used with an elevator system. The elevator level warning system may be used to detect that-and/or warn users that-a front cab-floor edge and a landing plane are misaligned and have a drop between them of greater than a threshold distance.
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公开(公告)号:US3418608A
公开(公告)日:1968-12-24
申请号:US62449767
申请日:1967-03-20
发明人: ANGEL HENRY R , HENRY MORGAN A
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公开(公告)号:US11482881B2
公开(公告)日:2022-10-25
申请号:US16845274
申请日:2020-04-10
发明人: Michael Rose
IPC分类号: H02J9/06 , H02J7/02 , H02M7/219 , H02M7/5387 , H02M7/5395
摘要: A power supply circuit for powering components of a facility are disclosed. The power supply circuit may include a power transformer, a power input terminal, a power output terminal, a bridge, a relay, and a control circuit. The relay is connected between the power input terminal and the power output terminal. A primary side of the power transformer is coupled between the relay and the power output terminal. The bridge is coupled to the secondary side of the power transformer. In a normal power mode, the control circuit closes the relay and operates the bridge as a rectifier. In an emergency power mode, the control circuit opens the relay and operates the bridge as a pulse width modulator. In this manner, the bridge and the power transformer can be used both to charge a battery during normal operation and generate emergency AC power from the battery.
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公开(公告)号:US3226508A
公开(公告)日:1965-12-28
申请号:US23762562
申请日:1962-11-14
发明人: HENRY MORGAN A , UHL WALTER D , ANGEL HENRY R
IPC分类号: H01H50/20
CPC分类号: H01H50/20
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公开(公告)号:US2386164A
公开(公告)日:1945-10-02
申请号:US50321343
申请日:1943-09-21
发明人: HURLEY RAYMOND J
CPC分类号: H05B1/0208 , G05D16/18
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公开(公告)号:US3207932A
公开(公告)日:1965-09-21
申请号:US15345661
申请日:1961-11-20
发明人: STEWART TONGRET
CPC分类号: H01H7/08 , H05B37/0218 , Y02B20/46 , Y10T307/773 , Y10T307/951
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公开(公告)号:US3206990A
公开(公告)日:1965-09-21
申请号:US22533162
申请日:1962-09-21
发明人: UHL WALTER D
IPC分类号: H01H23/16
CPC分类号: H01H23/164 , Y10T74/1896
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公开(公告)号:US20240101395A1
公开(公告)日:2024-03-28
申请号:US18371498
申请日:2023-09-22
CPC分类号: B66B13/22 , B66B1/3461 , G01K3/005 , G01V8/14
摘要: Systems and methods for monitoring the bottom of the doors to an elevator to increase safety in and around the elevator cab and prevent dangerous conditions when a hallway or cab door to the elevator is damaged, loose, misaligned, or malfunctioning.
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公开(公告)号:US20220185626A1
公开(公告)日:2022-06-16
申请号:US17550649
申请日:2021-12-14
发明人: Michael Rose , Walter Heidt Barnes
摘要: An elevator pit safety system is provided, along with methods of use thereof. An elevator pit safety system may include a control system, an emergency stop switch, and a power switch. The emergency stop switch may be configured to stop an elevator cab. The power switch may be configured to operate a lighting system. The control system may prevent either from being used without the other. The elevator pit safety system may be configured to allow overriding the safety features.
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