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51. 发明专利

GB1492745A IMPREGNATION OF DIELECTRIC MATERIALS AND LIQUIDS THEREFOR 未知
公开(公告)号：GB1492745A
公开(公告)日：1977-11-23
申请号：GB119574
申请日：1974-01-10
申请人： ERA PATENTS LTD
IPC分类号： C10M111/00 , B41C3/00 , C10N20/00 , C10N40/16 , H01B3/20 , H01G4/22 , C10M3/20 , C10M3/10
摘要： A mixture of dibutyl phthalate and dodecylbenzene in a ratio by volume of from 9:1 to 2.5:7.5 gives an electroinsulating liquid impregnant. It is suitable for impregnating dielectric materials made from plastics, in particular from polyolefin film, for the production of capacitors.

52. 发明专利

DE2500517A1 未知
公开(公告)号：DE2500517A1
公开(公告)日：1975-07-17
申请号：DE2500517
申请日：1975-01-08
申请人： ERA PATENTS LTD
发明人： CHURCH HENRY FREDERICK , PARKMAN NORMAN
IPC分类号： C10M111/00 , B41C3/00 , C10N20/00 , C10N40/16 , H01B3/20 , H01G4/22 , H01B3/18

53. 发明专利

AU6248973A VEHICLE GUIDANCE SYSTEM 未知
公开(公告)号：AU6248973A
公开(公告)日：1975-05-15
申请号：AU6248973
申请日：1973-11-14
申请人： ERA PATENTS LTD
发明人： HOBDAY DAVID STEPHEN , MARSHALL LEONARD
IPC分类号： B62D1/28 , G05D1/02 , G05D1/03
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.

54. 发明专利

FR2221892A1 未知
公开(公告)号：FR2221892A1
公开(公告)日：1974-10-11
申请号：FR7408932
申请日：1974-03-15
申请人： ERA PATENTS LTD
IPC分类号： C03C17/25 , G02F1/1343 , H01B1/00 , H01J17/49 , H05B33/28 , H05B33/10

55. 发明专利

FR2182654A1 未知
公开(公告)号：FR2182654A1
公开(公告)日：1973-12-14
申请号：FR7215628
申请日：1972-05-03
申请人： ERA PATENTS LTD
IPC分类号： C23C14/35 , H01J37/34 , C23C17/00

56. 发明专利

CA747560A TRANSFORMERS 未知
公开(公告)号：CA747560A
公开(公告)日：1966-11-29
申请号：CA747560D
申请人： ERA PATENTS LTD
发明人： MAZZA VITTORIO R

57. 发明专利

CA647449A FUEL CELL ELECTRODES 未知
公开(公告)号：CA647449A
公开(公告)日：1962-08-28
申请号：CA647449D
申请人： ERA PATENTS LTD
发明人： BACON FRANCIS T

58. 发明专利

FR1246135A 未知
公开(公告)号：FR1246135A
公开(公告)日：1960-11-18
申请号：FR745966
申请日：1957-08-22
申请人： ERA PATENTS LTD
IPC分类号： C25B11/00 , H01M4/86 , H01M8/24
摘要： A porous electrode for a fuel cell is made by dusting nickel powder of a particle size of 65 to 75 microns into a dish-shaped plate and sintering without pressure at a temperature between 1325 DEG C. and 1350 DEG C. for an hour in hydrogen or a mixture of hydrogen and nitrogen. A second layer having finer pores is then produced on the first layer by painting on it a suspension in alcohol of nickel powder having a particle size of 4 to 5 microns and sintering at 1000 DEG C. for half an hour. In an alternative method of making the first layer, nickel particles of size 7 to 9 microns or 4 to 5 microns are mixed with ammonium bicarbonate of 100-240 mesh in the proportion of 1 part by weight of the bicarbonate to 3 to 5 parts of nickel. The mixture is pressed at 4,000 lbs. per square inch and then sintered at 1000 DEG C. to 1150 DEG C. for half an hour to 3 hours. The Provisional Specification describes modifications of the sintering processes in one of which the temperature at which the coarser nickel particles of 65 to 75 microns are sintered is reduced to 1150 DEG C. by sintering in an atmosphere of hydrogen and nitrogen which has been passed through hydrochloric acid.

59. 发明专利

DE1025025B 未知
公开(公告)号：DE1025025B
公开(公告)日：1958-02-27
申请号：DEB0029304
申请日：1954-01-16
申请人： ERA PATENTS LTD
发明人： BACON FRANCIS THOMAS
IPC分类号： C25B11/10 , F01L5/06 , F16J1/24 , H01M4/86
摘要： 725,661. Batteries. BRITISH ELECTRICAL & ALLIED INDUSTRIES RESEARCH ASSOCIATION. Jan. 1, 1954 [Jan. 16, 1953], No. 1365/53. Class 53. [Also in Group XXII] Porous nickel electrodes for primary cells are protected against corrosion by coating them with nickel oxide containing lithium. The electrodes of the cell described in Specification 667,298 may be so treated and in one method of making such electrodes coarse nickel powder is placed in a mould and sintered at 1350 C. in hydrogen or a mixture of hydrogen and nitrogen. The sintered metal is then covered by spraying with a suspension of fine nickel powder in water, alcohol, acetone, benzene, ether or other liquid. Nickel powder may be rubbed on to this layer to seal any leaks. The electrode is again sintered at 1000 C. and finally immersed in a solution of lithium hydroxide, carbonate or other compound of lithium, dried, and oxidized by heating in air or a mixture of steam and air. In another method the large pore side of the electrode is made from finely powdered nickel mixed with ammonium carbonate, the mixture being compressed and sintered at 1150 C. The fine pore layer of nickel is sprayed on and the electrode dipped in a solution of nickel hydroxide, dried, and oxidized as in the previous example. Other examples are given in the Specification using nickel powders of various grades.

60. 发明专利

FR1108849A 未知
公开(公告)号：FR1108849A
公开(公告)日：1956-01-18
申请号：FR1108849D
申请日：1954-07-13
申请人： ERA PATENTS LTD
IPC分类号： B23K9/073

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