公开(公告)号：US4390038A

公开(公告)日：1983-06-28

申请号：US348423

申请日：1982-02-12

Applicant: Guido A. Salvato

Inventor： Guido A. Salvato

IPC: E03B9/02 ,  F16K35/06 ,  F16K31/08 ,  F16K35/16

CPC classification number: E03B9/02 ,  Y10S403/01 ,  Y10T137/5468 ,  Y10T137/7062 ,  Y10T137/7225 ,  Y10T70/7057

Abstract: A magnetically locked fluid valve having a particular utility in a fire hydrant to prevent unauthorized usage thereof. The fire hydrant includes an operating nut mounted on top of one end of a hydrant actuator shaft, and a magnetic lock is located in immediate proximity thereto. A shaped magnet is adapted to be placed around the actuator shaft adjacent to the magnetic lock, after which a wrench can be applied to the operating nut to control operation of the fire hydrant. The magnetic lock includes magnetic tumblers which are shifted in position in response to placement of the magnet on the actuator shaft. The actuator shaft includes an upper section coupled to the operating nut and a lower section coupled to the hydrant valve. The magnetic lock is positioned between the upper and lower shaft sections, and the upper shaft section is freely rotatable relative to the lower section when the magnet is removed, but is locked relative thereto when the magnet is positioned thereon.

Abstract translation: 一种磁性锁定的流体阀，在消防栓中具有特殊用途，以防止其未经授权的使用。 消防栓包括一个安装在消防龙头致动器轴一端顶部的操作螺母，一个磁性锁定位于其紧邻处。 成形磁体适于围绕致动器轴放置在与磁锁相邻的位置，之后可以将扳手施加到操作螺母上以控制消防栓的操作。 磁锁包括响应于磁体在致动器轴上的放置而在位置上偏移的磁性翻转开关。 致动器轴包括联接到操作螺母的上部和联接到消防栓阀的下部。 磁锁定位在上下轴部分之间，当磁体被移除时，上轴部分可相对于下部部分自由旋转，而当磁体定位在其上时相对于其相对锁定。