Lockout device

Details Lockout device Lockout device

1998-04-15

2000-03-21

Barrett, Suzanne Dino

Locks

Special application

For control and machine elements

70178, 70221, F16K 3500

Patent

active

060388935

ABSTRACT:
A locking device for use in connection with an energy controlling apparatus, such as a valve, or regulator, to prevent unauthorized persons from changing the position of a rotatable shaft of the apparatus that controls the amount of energy that flows through the apparatus. The locking device includes a handle used to manually set the position of the shaft. It also includes a gear that is rotatably mounted in the handle and is fixed to the shaft of the apparatus. A first locking mechanism carried by the handle mechanically and selectively couples the handle and the gear through a key access to the lock. A spring-biased ratchet mechanism may be provided to permit rotation of the shaft in one direction only. A personal locking mechanism with only a single key is selectively lockable to the handle so that in the locked position it prevents access to the first locking mechanism.

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