초록 ▼

A safety lock device for use in releasably locking the head of a butterfly valve. The two part safety lock device comprises first: a cross-sectionally U-shape elongated frame, having an anchoring part at one end and a lateral flange with a number of bores; the anchoring part releasably engages with

A safety lock device for use in releasably locking the head of a butterfly valve. The two part safety lock device comprises first: a cross-sectionally U-shape elongated frame, having an anchoring part at one end and a lateral flange with a number of bores; the anchoring part releasably engages with the valve head for anchoring the U-frame to the valve head; the elongated channel is sized for full engagement by the valve handle; and second: a casing, with an inner passageway, sized for through engagement by the U-frame, and a lateral pocket extension with a number of bores, for engagement by the lateral flange. The casing is characterized by a wedge part, integrally depending therefrom and sized for engagement between the diverging distal end portions of the valve handle and lever. Padlocks releasably interlock the U-frame to the casing by engaging selected pairs of flange bores and pocket bores, thereby concurrently locking the valve lever in its divergent relation to the valve handle.

대표청구항 ▼

A safety lock device for use in releasably locking the head of a butterfly valve in a fluid flow conduit, this valve head of the type having a radial shaft rotatably mounted into a fixed radial tubular extension, a notched discoid plate supported by the fixed tubular extension, a handle transversely

A safety lock device for use in releasably locking the head of a butterfly valve in a fluid flow conduit, this valve head of the type having a radial shaft rotatably mounted into a fixed radial tubular extension, a notched discoid plate supported by the fixed tubular extension, a handle transversely carried by the rotatable shaft with an elbowed lever intermediately pivoted to the handle, the lever and handle having distal end portions being divergent in an operative lever condition; wherein said safety lock device comprises: (a) an elongated male member, having an elongated channel part at one end and a hooking part at the opposite end, said hooking part for releasable hooking engagement with the valve head discoid plate for mounting said male member to the valve head, said elongated channel part being sized for full engagement by the valve handle; (b) a female member, having a casing part with a mouth, sized for through engagement by said channel part, and a wedge part, integrally depending from said casing part and sized for frictional engagement between the diverging distal end portions of the valve handle and lever; and (c) locking means, for releasably interlocking said male and female members when said male member channel part is engaged into said female member casing part, and for concurrently locking the diverging valve lever by preventing release of said wedge part from between the valve handle and valve lever.