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21. 发明授权

US2680226A Location of conducting and/or magnetic bodies 失效
标题翻译：导体和/或磁体的位置
公开(公告)号：US2680226A
公开(公告)日：1954-06-01
申请号：US23201451
申请日：1951-06-16
申请人： ERA PATENTS LTD
发明人： STANLEY WHITEHEAD , BENJAMIN ROSTON
IPC分类号： G01V3/10
CPC分类号： G01V3/104

22. 发明授权

US3900773A Electrical capacitors 失效
公开(公告)号：US3900773A
公开(公告)日：1975-08-19
申请号：US36883373
申请日：1973-06-11
申请人： ERA PATENTS LTD
发明人： BOWKLEY IAN G , GOFF NIGEL J
IPC分类号： H01G4/008 , H01G4/12 , H01G1/01
CPC分类号： H01G4/129 , H01G4/0085
摘要： An improvement in an electrical capacitor produced by printing on a ceramic substrate a thick film comprising a mixture of finely divided precious metal and powdered glass and firing this to form a base electrode, printing on the base electrode a thick film of high permittivity dielectric paste of the glass-ceramic type having a composition such that it re-crystallises during firing to produce a fine dispersion of high permittivity ferroelectric crystals throughout the layer and subsequently firing this layer; and printing over the two previous layers a thick film comprising a mixture of finely divided precious metal and glass and finally firing this to form a top electrode. The improvement consists in the fact that the glass included in the top electrode has the ability to soften in the temperature range 700*-850*C and on further heating to re-crystallise at temperatures below 1,000*C resulting in a glass-ceramic material having a minimum permittivity at room temperature of 50, thus giving a major increase in the capacitance of the resulting capacitor.

23. 发明授权

US3893536A Vehicle guidance system operating in the bang bang mode 失效
标题翻译：车辆导向系统以爆炸方式运行
公开(公告)号：US3893536A
公开(公告)日：1975-07-08
申请号：US41534773
申请日：1973-11-13
申请人： ERA PATENTS LTD
发明人： MARSHALL LEONARD , HOBDAY DAVID S
IPC分类号： B62D1/28 , G05D1/02 , B62D1/24
CPC分类号： G05D1/0265 , G05D2201/0201 , G05D2201/0216
摘要： In a vehicle guidance system for guiding a vehicle along a path defined by a guidance conductor, the deviation of the vehicle from the path is sensed and whenever the deviation reaches a predetermined value in either direction the vehicle steering mechanism is activated to a fixed amount in the required direction for correcting the deviation. The steering mechanism remains activated by the fixed amount until the deviation is reduced below the predetermined value. The steering mechanism is then de-activated and returns to the zero position. The monitoring of the deviation is preferably carried out by sensing means which provides two signals which vary differentially depending on the deviation, the steering mechanism being activated when the difference between the signals exceeds a preset level.
摘要翻译：在用于沿着由引导导体限定的路径引导车辆的车辆引导系统中，感测到车辆与路径的偏差，并且每当偏离在任一方向上达到预定值时，车辆转向机构被激活到固定量纠正偏差的必要方向。转向机构保持激活固定量，直到偏差降低到预定值以下。转向机构然后被去激活并返回到零位置。偏差的监视优选地通过感测装置进行，该感测装置提供根据偏差而差异变化的两个信号，当信号之间的差异超过预设水平时，转向机构被激活。

24. 发明授权

US2684461A Direct current electric transmission system 失效
公开(公告)号：US2684461A
公开(公告)日：1954-07-20
申请号：US27426052
申请日：1952-02-29
申请人： ERA PATENTS LTD
发明人： FELIX BUSEMANN
IPC分类号： H02M5/447
CPC分类号： H02M5/447

25. 发明授权

US2659036A Alternating current arc welding equipment 失效
标题翻译：交流电弧焊设备
公开(公告)号：US2659036A
公开(公告)日：1953-11-10
申请号：US24072651
申请日：1951-08-07
申请人： ERA PATENTS LTD
发明人： CHRISTOPHER NEEDHAM JAMES , HUMPHREY ORTON LEONARD HERBERT
IPC分类号： B23K9/10
CPC分类号： B23K9/1025 , Y10T307/615 , Y10T307/658

26. 发明授权

US2291468A Protective device for electrical circuits 失效
标题翻译：电路保护装置
公开(公告)号：US2291468A
公开(公告)日：1942-07-28
申请号：US31323640
申请日：1940-01-10
申请人： ERA PATENTS LTD
发明人： HEINRICH GOLDE RUDOLF , MORGAN LACEY HAROLD , GEORGE HAWLEY WILLIAM , WALTER NETHERCOT
IPC分类号： H02H9/06
CPC分类号： H02H9/06

27. 发明专利

DE60202061T2 未知
公开(公告)号：DE60202061T2
公开(公告)日：2005-04-07
申请号：DE60202061
申请日：2002-05-22
申请人： ERA PATENTS LTD
发明人： SANCHEZ FRANCISCO JAVIER VAZQU
IPC分类号： H01P1/201 , H01P3/00 , H01Q13/10

28. 发明专利

AT243325T 未知
公开(公告)号：AT243325T
公开(公告)日：2003-07-15
申请号：AT99306164
申请日：1999-08-03
申请人： ERA PATENTS LTD
发明人： DANIELS DAVID JOHN
IPC分类号： G01S13/02 , G01S13/88 , G01S7/02

29. 发明专利

AU5041901A Planar array antenna 未知
公开(公告)号：AU5041901A
公开(公告)日：2001-10-30
申请号：AU5041901
申请日：2001-04-09
申请人： ERA PATENTS LTD
发明人： SHELLEY MARTIN WILLIAM , SANCHEZ FRANCISCO JAVIER VAZQU
IPC分类号： H01Q1/52 , H01Q5/55 , H01Q21/00 , H01Q21/06 , H01Q5/00

30. 发明专利

GB9708758D0 Antenna 未知
公开(公告)号：GB9708758D0
公开(公告)日：1997-06-25
申请号：GB9708758
申请日：1997-04-29
申请人： ERA PATENTS LTD
IPC分类号： H01Q15/24

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