Valves and valve actuation – With means for blocking or disabling actuator – Actuator – or blocking means – includes flow path joint
Reexamination Certificate
2008-02-15
2011-12-13
Hepperle, Stephen M (Department: 3753)
Valves and valve actuation
With means for blocking or disabling actuator
Actuator, or blocking means, includes flow path joint
C251S095000, C251S111000, C251S113000, C251S148000
Reexamination Certificate
active
08074959
ABSTRACT:
An apparatus is provided which prevents the removal of a companion fitting when the valve is open. Thus, for example there is disclosed a load line apparatus comprising a housing, a valve, a cam lever, or more likely a pair of cam levers, and a locking device. The housing has an interior bore, the interior bore defining a flow-through passage. The valve has a surface shaped to close the flow-through passage when the valve is closed. The cam lever is pivotally attached to the housing, and the locking device is movable by the cam lever. The cam lever is operable between a locked position and an unlocked position. In the locked position, the locking device forms a stop to prevent the valve being opened. In the unlocked position, the locking device is retracted from the locked position. The cam lever is operable from the unlocked position into the locked position only when the valve is closed. The load line apparatus disclosed prevents the valve from being opened unless the cam lever is the unlocked position. The load line valve may also prevent a pipe fitting from being uncoupled with a coupling end of the pipe when the valve is opened.
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Christensen O'Connor Johnson & Kindness PLLC
Hepperle Stephen M
Sledz Industries Inc.
Waddy Jonathan
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