Head for bore gauge
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 13, 1983
Grant Date -
N/A
app pub date -
Jul 31, 1981
filing date -
Jul 31, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A head assembly is provided for use in a bore gauge and is adapted to actuate either a mechanical readout, such as a dial indicator, or an electrical readout, such as a linear variable differential transformer connected to a digital display. A U-shaped centralizing arm pivoted to the head body is provided with a pair of floating centralizing ball contacts. A first measuring ball contact is mounted at the outer end of a rack and pinion extensible stem adapted to be adjusted as to radial extension and a second measuring ball contact is mounted on a resiliently mounted finger which drivingly engages a transfer rod. The transfer rod is operatively connected to the readout device whether a dial indicator or an LVDT. A ball and groove driving arrangement is provided between the transfer rod and the pivotal finger.
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