Invention Grant
- Patent Title: Method and apparatus for providing output indications in response to the presence of an electromagnetic energy receptor
- Patent Title (中): 用于响应于电磁能量受体的存在而提供输出指示的方法和装置
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Application No.: US689175Application Date: 1976-06-02
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Publication No.: US4124846APublication Date: 1978-11-07
- Inventor: John Fajt
- Applicant: John Fajt
- Applicant Address: IL Northfield
- Assignee: ELT Incorporated
- Current Assignee: ELT Incorporated
- Current Assignee Address: IL Northfield
- Main IPC: G01R13/00
- IPC: G01R13/00 ; G01R13/42 ; G01D21/04 ; G01R27/26 ; G08B13/26
Abstract:
A method and apparatus for providing output indications in response to the presence of an electromagnetic energy receptor within a predetermined distance of a glow discharge device the electrodes of which have a voltage applied thereacross at least equal to the maintaining voltage but less than the breakdown voltage, including an excitor for generating an electromagnetic field around the glow discharge device at a strength less than the ionization level but sufficient to ionize the gas when the electromagnetic energy receptor is within the predetermined distance of the glow discharge device.
Public/Granted literature
- US5838924A Asynchronous transfer mode (ATM) connection protection switching apparatus and method Public/Granted day:1998-11-17
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