Improvements relating to thermally responsive elec

专利名称：Improvements relating to thermally

responsive electric switches

发明人：O'Neill, Robert Andrew,Fletcher,

Keith,Foster, Terence JamesCollins,Florentine, Andrew Vincent

申请号：EP88311081.9申请日：19881123公开号：EP0318265B1公开日：19940209

摘要：A steam sensor for a water boiling vessel consists of a moulded plastics bodyportion defining spaced-apart pivotal support positions for an overcentre bridgeconsisting of a bimetal and a trip-lever pivotally journalled together at the centre of thebridge and each pivotally journalled at its other end in one of the support positions ofthe moulding. The trip-lever is arranged to perform snap-action movement in responseto heating of the bimetal irrespective of the fact that a plain (non-prestressed and non-snap-acting) bimetal is used and can be coupled either directly to a switch sub-assemblyin the steam sensor or indirectly via a Bowden cable or the like to a separate switchincorporated in a remote element protector unit. The switch sub-assembly in the steamsensor may be designed to be plugged directly into a socket formed in an elementprotector unit in which case the switch of the steam sensor is connected electrically inseries with a switch in the element protector, and the same electrical arrangement can beobtained with the steam sensor and the element protector spaced apart from each otherand interconnected by means of a lead having appropriate plug and socket terminations.

申请人：OTTER CONTROLS LTD

地址：GB

国籍：GB

代理机构：Milhench, Howard Leslie

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