Tool eye/setter with improved mean time between failures construction
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United States of America Patent
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May 2, 1995
Grant Date -
N/A
app pub date -
May 12, 1993
filing date -
May 12, 1993
priority date (Note) -
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Abstract
A tool eye/setter comprising a sealed housing formed from a single piece. Sensor heads are mounted on the four faces of the upper portion of the housing. A shaft connects each sensor head with the inside of the housing. The shaft rests against a rod contact, which in turn rests against a knife contact. Pressure upon the sensor head causes inward motion on the shaft, which in turn pushes the rod contact away from the knife contact, breaking an electrical connection between the two. Rubber seals cover the shaft-and portions of the sensor head that extend into the housing to prevent gas and fluid communication between the inside and outside of the housing. The absence of gas and fluid communication helps to prevent contaminants from getting into the housing and allows the housing to optionally hold an inert gas to prevent corrosion to the electrical contacts.
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