Apparatus for measuring thickness of a non-metallic layer on a ferromagnetic base material
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United States of America Patent
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Jun 25, 1991
Grant Date -
N/A
app pub date -
Jun 21, 1990
filing date -
Jun 21, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus for the detection of body filler components utilized in damage repair of automotive sheet metal is set forth. The device utilizes an elongate housing including a reciprocatable shaft mounted coaxially within the housing, wherein the reciprocatable shaft includes a forward terminal end mounting a magnet member thereon. Upon the magnet being retracted relative to a non-metallic or filled body surfaces utilizing various polymeric or even lead fillers, the shaft remains retracted in the housing biased therewithin. Intermediate levels of body filler effects various degrees of extension of the shaft relative to the housing, wherein a stepped plate is provided to lock the shaft in its extension relative to the housing.
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