Measuring and testing – Dynamometers – Responsive to force
Reexamination Certificate
2005-04-19
2005-04-19
Lefkowitz, Edward (Department: 2855)
Measuring and testing
Dynamometers
Responsive to force
C073S862420
Reexamination Certificate
active
06880412
ABSTRACT:
A device and method for testing the tension in a stressed cable of a concrete structure. The device includes a frame and a hydraulic jack mounted onto the frame. The hydraulic jack applies a force to the stressed cable and displaces the stressed cable laterally. A hook or clamp is connected to the hydraulic jack for grasping the stressed cable in order to apply the force thereto, and a dial gauge is mounted onto the frame for measuring the deflection of the stressed cable once the force has been applied. The amount of pre-stress within the stressed cable can be calculated by measuring the amount of deflection caused to the stressed cable by the force of the jack.
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(1997) Wire Tension Meter SM 55C1/SM 150C1.*
Proceq SA (1994) Zurich, Switzwerland. SM55 SM150 Wire tension meter.*
Proceq SA (1994) Zurich, Switzwerland. SM55 SM150 Wire tension meter.*
Proceq SA (1994) Zurich, Switzerland. SM55 SM 150 Wire tension meter.*
Proceq SA (1994) Zurich, Switzerland. SM55 SM 150 Wire tension meter.*
Scott A. Civjan, P. E. et al., Instrument to Evaluate Remaining Prestress in Damaged Prestressed Concrete Bridge Girders, PCI Journal Mar.-Apr. 1998, pp. 62-71.
Proceq SA, Zurich, Switzerland, SM55 SM150 Wire Tension Meter (4 sheets).
Knuth Randall J.
Lefkowitz Edward
Martir Lilybett
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