Measuring and testing – Hardness – By penetrator or indentor
Patent
1999-04-29
2000-05-30
Raevis, Robert
Measuring and testing
Hardness
By penetrator or indentor
G01N 342
Patent
active
060678461
ABSTRACT:
An apparatus for testing hardness of a pipe including a body having a longitudinal axis, a probe connected to the body and extending transverse to the longitudinal axis of the body, a retaining mechanism connected to the probe and positioned within the body so as to maintain the probe in a fixed position relative to the pipe while the body is moving through the pipe, and a processor connected to the probe so as to convert a signal produced by the probe relative to the hardness of the pipe into a humanly perceivable indication of pipe hardness. The probe serves to contact a point along the inner surface of the pipe while the body is moving continuously through the pipe.
REFERENCES:
patent: 4196616 (1980-04-01), Argabrite et al.
patent: 4791807 (1988-12-01), Oechsle
patent: 4974443 (1990-12-01), Heitmann
patent: 5315879 (1994-05-01), Crochon et al.
Fry, Jr. Leroy
Hill Jack O.
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