G - Physics – 01 – B
Patent
G - Physics
01
B
G01B 5/08 (2006.01) G01B 3/26 (2006.01) G01B 3/46 (2006.01) G01B 7/13 (2006.01)
Patent
CA 2147030
An actuator and programmable amplifier is operative for use with an expanding plug gage head operated by an axially movable plunger having a tapered operating end and an opposite cross head end. The cross head end of the plunger is releasably received and secured through a slot in a retracting lever which is pivotably mounted in the actuator/amplifier housing. A compression spring normally urges the plunger to a fully extended position within the gage head. The retracting lever is actuatable for withdrawing the plunger from the gage head. The actuator/amplifier device includes a transducer having a core which is coupled to the crosshead end of the plunger. The transducer is operative for measuring an axial position of the plunger within the gage head. The programmable amplifier includes a memory for storing a plurality of sets of configuration data for a plurality of different gage heads. Each of the sets of configuration data includes a predetermined measuring dimension of the gage head, and a predetermined amplification factor of the tapered operating end of the plunger of the gage head. The amplifier further includes a key pad for inputting configuration data to the memory and for selecting one of the sets of configuration data from the memory. A central processor is programmed to convert the sensed axial position of the plunger to a 29 measured dimension according to the selected set of configuration data. The measured dimension is output to a digital liquid crystal display.
Auger Wilfred R.
Lai Jiening
Marsh David W.
Borden Ladner Gervais Llp
Comtorgage Corporation
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