发明名称 Tamper-proof hydrant cover
摘要 A tamper-proof cover for the operating nut of a hydrant. The cover includes a housing adapted to be positioned above the operating nut for covering the operating nut, the housing having an opening, a housing mounting device securable to the hydrant and engagable with the housing for securing the housing to the hydrant, and a locking device for removably securing the housing to the mounting device which includes a pin positionable in the opening in the housing and engagable with a recess defined in the mounting device, a locking member engagable with the pin and the recess in the housing, a frangible shoulder within the recess in the mounting device against which the locking member seats and which must be broken to remove the pin. Other forms of the tamper-proof cover and a tool for removing the cover are also disclosed.
申请公布号 US4727900(A) 申请公布日期 1988.03.01
申请号 US19860940747 申请日期 1986.12.11
申请人 DOOLING, JOSEPH S.;VANEK, KENNETH F.;VANEK, GENE R. 发明人 DOOLING, JOSEPH S.;VANEK, KENNETH F.;VANEK, GENE R.
分类号 E03B9/06;(IPC1-7):E03B9/06;F16K35/06 主分类号 E03B9/06
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