Valve operated by a master key
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United States of America Patent
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Apr 16, 2013
Grant Date -
Apr 29, 2010
app pub date -
Jul 9, 2007
filing date -
Mar 20, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
A valve which is controlled using a master key such that only an authorized person is able to turn the valve on and off. The valve is constructed such that a fluid passage is controlled by rotating a handle relative to a body, including a locking device for maintaining a locked state of the handle relative to the body. A master key slot, which extends to the locking device, is formed in the handle, so that, when the master key is inserted into the master key slot, the locked state of the handle is released such that the fluid passage can be controlled by the rotation of the handle.
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