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US 5,299,597 AGranted
Valve operating handle
AssigneeFort Vale Engineering Limited
InventorsEdward S. Fort, Alan G. Smithson
Life of this patent
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AssigneeFort Vale Engineering Limited
InventorsEdward S. Fort, Alan G. Smithson
Estimating the term…
A handle assembly for operating a valve of the type having a valve body and a pivotally mounted actuating spindle extending from the valve body has a mounting means to secure the assembly to the spindle, a handle portion connected to the mounting means and a pivotally mounted locking member. The locking member is pivotable, either by camming surfaces on the handle portion and the locking member or by a key, between a first, locked position in which it engages with a portion of the valve body, and a second, unlocked position in which it is free from the valve body and enables the valve spindle to be rotated by the handle portion. The locking member is provided with a number of apertures which can be aligned with corresponding apertures in the mounting means and the handle portion when the locking member is in its locked position. The apertures are shaped to receive tamper-sensitive tape or wire or the shackle of a padlock, to indicate or prevent unauthorized use of the valve.
A handle assembly for operating a valve of the type having a valve body and a pivotally mounted actuating spindle extending from said valve body along a first pivotal axis, the handle assembly comprising:
A handle assembly for operating a valve of the type having a valve body and a pivotally mounted actuating spindle extending from said valve body along a first pivotal axis, the handle assembly comprising:
A handle assembly for operating a valve of the type having a valve body and a pivotally mounted actuating spindle extending from said valve body along a first pivotal axis, the handle assembly comprising:
Dependencies are inferred from the claim text.