LOCKS
来源：要发发知识网
专利内容由知识产权出版社提供
专利名称：LOCKS发明人：HOYT R,US申请号：US35298373申请日：19730420公开号：US3835674A公开日：19740917
摘要：This device is a bolt type lock for preventing tampering with gas and electricmeters. A hollow body with a fixed head on one end has a cap held onto the other end bylocking means held extended into the cap by a spring-loaded plunger retractible solelythrough a small round key hole in the head, to unlock the lock. If any tool but theauthorised key is used to pull the plunger, a piece that is normally left behind when thegenuine key is used is brought into position in place of the plunger and keeps the lockingmeans extended and the lock locked.
申请人：OMCO INC,US
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