Valve lockout/tag out system
AssigneeBabbitt Steam Specialty Company
InventorEdwin V. Babbitt, III
Life of this patent
Estimating the term…
Abstract
A system for locking a chain-operated valve to prevent unauthorized and inadvertent operation of the valve. The system includes an elongated tube for receiving both lengths of a chain encircling the valve and a locking arrangement positioned at one end of the tube. Both lengths of the chain extending from the valve enter one end of the tube and exit the opposite end of the tube adjacent the lock arrangement. The lock arrangement includes a bracket secured to the tube and extending outwardly from the tube. The bracket preferably includes apertures for receiving a lockout hasp extending through the chain links and the bracket. A conventional padlock or other security locking device may then extend through the hasp to prevent opening of the hasp.
Claims20
A system for locking a chain-operated valve for preventing unauthorized and inadvertent operation of the valve, the system comprising:
- an operating chain attached to the valve, the chain having opposed ends
- an elongated tube having a first end for receiving both ends of the operating chain;
- and
- a locking arrangement positioned at a second end of the elongated tube for locking the ends of the operating chain to the second end of the tube and preventing operation of the valve.
A system for locking a valve, comprising:
- operating means for opening and closing the valve;
- a tube having opposed ends for receiving and enclosing the operating means;
- and
- a locking arrangement positioned at one end of the tub for locking the operating means thereto to prevent operation of the valve by the operating means wherein the operating means comprises an elongated chain having opposed ends, wherein the tube receives both ends of the chain and the ends of the chain extend through an entire length of the tube to exit from the one end of the tube adjacent the locking arrangement.
A system for locking a chain operated valve to prevent unauthorized and inadvertent operation of the valve, comprising:
- an operating chain attached to the valve, the chain having opposed ends;
- an elongated tube having first and second ends, wherein the first end of the tube receives both ends of the chain and both ends of the chain extend from the second end of the tube;
- and
- a locking arrangement positioned at the second end of the tube for locking both ends of the chain to the tube to prevent opening or closing of the valve, the locking arrangement including a bracket affixed to the second end of the tube , a lockout hasp which extends through at least one of the apertures of the bracket and links of the chain, and a locking device for extending through the hasp to prevent opening thereof.
A method for preventing unauthorized and inadvertent operation of a valve, comprising the steps of:
- attaching an elongated chain to an operating portion of the valve, the elongated chain having opposed ends;
- positioning an elongated tube in a location remote from the valve, the tube having a first and second end;
- extending both ends of the chain through the tube, wherein the ends of the chain are received through the first end of the tube, travel the entire length of the tube and extend from the second end of the tube;
- attaching a bracket to the second end of the tube, the bracket including a plurality of apertures;
- inserting a lockout hasp through at least one of the apertures of the bracket and through the links of the chain;
- and
- extending a locking device through the hasp to secure the chain against any pulling movement.
Dependencies are inferred from the claim text.