专利内容由知识产权出版社提供
专利名称：Apparatus for detecting a completed
electrical circuit at an electrical outputreceptacle
发明人：Alan L. Sheldon申请号：US07/980329申请日：19921123公开号：US05331283A公开日：19940719
摘要：An electrical test buzzer is adapted for insertion into an output receptacle andused to test for the presence of electricity at the output receptacle. The electrical testbuzzer includes an audible alarm, a transformer, held in a housing, and a pair of contactprongs. The contact prongs are inserted into a respective output receptacle causing thebuzzer to sound a high pitched alarm when electricity is present at the receptacle. Whenno electricity is present at the receptacle no circuit is formed and the alarm does notsound.
申请人：SHELDON; ALAN L.
代理人：S. Michael Bender
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