Mechanical multiplier for a strain gage on a derrick

Details Mechanical multiplier for a strain gage on a derrick Mechanical multiplier for a strain gage on a derrick

2005-05-31

2005-05-31

Lefkowitz, Edward (Department: 2855)

Measuring and testing

Specimen stress or strain, or testing by stress or strain...

Specified load or strain transmission device from specimen...

Reexamination Certificate

active

06898983

ABSTRACT:
A strain gage apparatus for measuring the load applied to a derrick leg mechanically multiplies the deflection or distortion of a strain gage. The apparatus attaches to the derrick leg at two points that are spaced about five feet apart. Accumulated strain along the five-foot section moves one end of an elongate member a significant distance. The distance is much greater than any localized movement or minute strain in the derrick leg. The movement of the elongate member stresses a reaction member upon which the strain gage is mounted.

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