Geometrical instruments – Area integrators – Electrical
Patent
1974-06-20
1976-02-24
Aegerter, Richard E.
Geometrical instruments
Area integrators
Electrical
33178F, G01B 520, G01B 512, E21B 4708
Patent
active
039395707
ABSTRACT:
Apparatus for determining the load-carrying capability of a hollow pile driven into the ground to carry a vertical load. The apparatus measures changes in the internal radius (diameter) of the pile at various points along its length. The apparatus includes rotatable sensing means which enters the pile and senses the internal configuration of the pile in at least one predetermined radial direction for at least one predetermined level along the length of the pipe pile. The rotable sensing means also produces a signal representative of the internal configuration for each such predetermined radial direction at each such predetermined level along the length of the pile. The apparatus also includes means for rotating the rotatable sensing means to the desired radial position, and means for moving the rotatable sensing means longitudinally in the pile to the desired point along the pile's length.
REFERENCES:
patent: 2281960 (1942-05-01), Vacquier
patent: 2514355 (1950-07-01), Barnes
patent: 2553350 (1951-05-01), Bayhi
patent: 3495340 (1970-02-01), Bunnell
patent: 3718978 (1973-03-01), Van Koevering et al.
Aegerter Richard E.
Stearns Richard R.
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