Valve actuator for railway tank car
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United States of America Patent
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Aug 28, 2018
Grant Date -
Nov 10, 2016
app pub date -
May 5, 2016
filing date -
May 8, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
A valve actuator can include an elongate shaft configured to engage with a valve stem of a valve assembly. The elongate shaft can include a weakened portion between the first and second ends. The actuator can include an elongate tube configured to receive a portion of the elongate shaft. A can engage a valve stem of a valve assembly a portion of the elongate shaft. The biasing member can bias the elongate shaft away from the valve stem. The elongate shaft can transition between partially and fully engaged positions. The elongate can inhibit accidental rotation of a valve stem when in the partially engaged position. The elongate shaft can be incapable of rotating a valve stem when in the partially engaged position. The elongate shaft can be capable of rotating a valve stem when in a fully engaged position. The biasing member can bias the elongate shaft toward the partially engaged position.
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