Back to results
US 2004/0103942 A1Published application
Valve lock mechanism
OwnerAdrian Richard Browninventor
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
OwnerAdrian Richard Browninventor
Estimating the term…
In a fluid flow control valve having a valve body and a rotatable operating member projecting from the body, a lock mechanism having a driving member adapted for attachment to and rotating the operating member, which driving member has an outwardly-directed groove formed therearound. A turning member is mounted coaxially on the driving member and has an arcuate inwardly-directed groove axially aligned with and opposed to the groove of the driving member. A plurality of balls is located each partly in the two opposed grooves thereby to permit relative rotation between the driving member and the turning member but which prevent relative axial movement. A key mechanism is secured to the turning member and has a detent engageable with the driving member to prevent relative rotation between the driving member and the turning member, the detent being operable by use of a key inserted into the key mechanism. A portion of the key mechanism is in axial alignment with the opposed grooves and serves to retain the balls in those grooves.
A lock mechanism for a valve having a valve body and a rotatable valve operating member projecting from the valve body, which mechanism comprises:
A valve and lock mechanism combination, the valve having a valve body and a rotatable valve operating member projecting from the valve body, and the lock mechanism comprises:
Dependencies are inferred from the claim text.