초록 ▼

A valve lock assembly comprising a post member and a slide member, in which the post member is affixed to the valve stem of a valve and the side member can slide up and down around the post member, the slide member being so configured that it engages one or more of the stops on the valve to prevent

A valve lock assembly comprising a post member and a slide member, in which the post member is affixed to the valve stem of a valve and the side member can slide up and down around the post member, the slide member being so configured that it engages one or more of the stops on the valve to prevent rotation of the valve handle between the stops but, when slid upwardly, disengages from the stop and permits rotation of the valve handle.

대표청구항 ▼

A valve lock assembly for a rotary ball valve having a ball chamber, a rotatable control handle attached to the chamber so as to cause the chamber to rotate between fully open and fully closed positions, a handle extension rotatable in an arc of rotation between two stops which restrict movement of

A valve lock assembly for a rotary ball valve having a ball chamber, a rotatable control handle attached to the chamber so as to cause the chamber to rotate between fully open and fully closed positions, a handle extension rotatable in an arc of rotation between two stops which restrict movement of the handle and handle extension as the handle rotates the chamber between open and closed positions, and a threaded valve stem, which said assembly comprises a substantially rigid post member and a substantially rigid slide member slidable about the post member between an upward first position in which the slide member does not abut either of said stops and a lower second position in which a portion of the slide member abuts at least one stop, wherein: a. said post member is attachable to said valve stem so that it can form the inner component of said valve lock assembly when the assembly is positioned about the valve stem; and b. said slide member is hollow with inside dimensions sized to permit it to slide down around said post member from the upward first position to the lower second position without substantial clearance and is configured as follows: (i) said slide member in the lower second position having sufficient length alternately to abut one of the stops in the arc of rotation while the handle extension abuts the second stop in the arc of rotation preventing movement of the handle and chamber in any direction of rotation when the stops are thus abutted by the handle extension at one extreme and the slide member at the other extreme; and (ii) said slide member having an opening with (A) a width at least equal to the width of the handle so that the slide member can straddle the handle and with (B) a height high enough to permit the slide member to abut the stops when the slide member is in the lower second position the post member and slide member in assembled relationship about the valve, with post member rigidly attached to the valve stem and with slide member in the lower second position in abutment with a stop, forming a rigid valve lock assembly which can be unlocked in normal operation only by lifting the slide member from the lower second position toward the upward first position so that the slide member no longer abuts a stop.