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公开(公告)号：EP0771016A3
公开(公告)日：1998-08-19
申请号：EP96307625
申请日：1996-10-21
申请人： GEC ALSTHOM LTD
CPC分类号： H01H3/46 , H01H9/0066 , H01H33/022 , H01H33/666 , H01H2033/6667
摘要： A motion conversion arrangement for a magnetic actuator having a pivoted armature (14) comprises a link rod (50) having at one end a spindle means, which may take the form of a spacer (51) on the rod, and a pair of restraining means, e.g washers (53), the spindle means fitting loosely in a hole in the armature (14) of the actuator and the restraining means (53) serving to keep the spindle means (51) in the hole. The armature hole describes an arc in a first plane. The other end of the rod is connected to an apparatus (48) which is actuated along a second plane perpendicular to the first plane. Clearances are deliberately provided between the spacer (51) and the hole and between the restraining means (53) and the armature faces so that the rod (50) can skew in the armature (14) in order to execute movement in the second plane.
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公开(公告)号：EP0771018A3
公开(公告)日：1998-08-19
申请号：EP96307626
申请日：1996-10-21
申请人： GEC ALSTHOM LTD
CPC分类号： H01H50/24 , H01H33/022 , H01H33/666 , H01H50/305
摘要： A magnetic actuator arrangement, principally for a vacuum switching apparatus, employs, instead of precision ball-joint bearings (16) supporting the armature (14), simple bushes (40) with an inside diameter deliberately greater than the outside diameter of the armature spindle (15), such that the armature (14) is a loose fit inside the bushes (40). The effect of this is to enable the armature (14) to make non-rotational movements in the plane perpendicular to the spindle (15), and so automatically to assume a properly seated position with respect to the pole pieces (21, 22) of the magnets (10, 11) when the latter are energised, thereby eliminating an undesirable vibration at the magnet-armature interface. With conventional bearings having negligible play, this can only be done after time-consuming manual adjustment of the bearing locations by skilled technical personnel.
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公开(公告)号：EP0780867A3
公开(公告)日：1998-10-21
申请号：EP96308888
申请日：1996-12-06
申请人： GEC ALSTHOM LTD
发明人： RAND JOHN
CPC分类号： H01H33/66 , H01H11/00 , H01H33/664
摘要： A vacuum switching device has a junction (40; 45) at which a housing (10, 23; 10, 22, 24, 60) of said switching device, a first switching component (11, 13; 12, 14) and a second switching component (15; 16) meet, said junction (40; 45) having a vacuum on one side and a gas on the other, said housing and said first and second switching components comprising locating means (41, 42; 43, 44) for allowing accurate location of said first and second switching components with respect to each other and with respect to said housing. The switching components are, for example, the stem (13; 14) of a fixed or moving contact and an end-stub (15; 16) for making electrical connection between the contact and external equipment. The locating means are, preferably, a male "peg" (41; 43) on the stem and a bored hole (41; 44) in the end-stub, the peg fitting into a corresponding hole in the housing at that point.
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公开(公告)号：EP0793102A3
公开(公告)日：1998-12-16
申请号：EP97300874
申请日：1997-02-11
申请人： GEC ALSTHOM LTD , UNIV CARDIFF
发明人： MEYDAN TURGUT , CHOUDHARY PRAVEEN
IPC分类号： G01P15/105 , G01P15/11 , G01P15/08
CPC分类号： G01P15/11 , G01P15/105
摘要： A sensor device comprises a beam anchored at both ends to a mounting frame (31, 37) and composed of an amorphous material exhibiting a magnetostrictive effect. The beam has disposed at an intermediate point along its length a seismic mass (29), which may be magnetic or non-magnetic, and a magnetising coil (34) for imposing an alternating carrier flux upon the beam and a sensing coil (35) for sensing changes in magnetic field associated with the beam due to accelerations of an object to which the mounting frame is attached. The sensing coil may be in two sections (35a, 35b), one each side of the seismic mass, for the suppression of a transverse sensing effect. The invention also provides for the realisation of a strain-sensing device, the seismic mass being then dispensed with.
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