Geometrical instruments – Gauge – Plural tests
Patent
1990-08-27
1991-06-11
Haroian, Harry N.
Geometrical instruments
Gauge
Plural tests
33833, 33803, 33804, 33805, 33549, G01B 502
Patent
active
050221612
ABSTRACT:
An apparatus for gauging the height and outer diameter of a collar in a heat exchanger plate fin. The apparatus comprises a vertically displaceable carriage overhanging a base on which a plate fin can be mounted for measurement. On the carriage are mounted two displacement indicators, in the preferred embodiment electrical linear gauges. One indicator is oriented so that its indicator probe measures vertical displacement and, through the configuration of the apparatus, produces an output that can be translated to a measure of the height of the fin collar. The other indicator is oriented so that its indicator probe measures horizontal displacement. The independent but concerted positioning of two measuring blades to contact diametrically opposite points on the fin collar is resolved into an output from the horizontal indicator that can be translated into a measure of the outer diameter of the fin collar. In a preferred embodiment, the outputs of the two indicators are read on electrical digital readouts. No other operator action is required to obtain a measurement than to raise the handle, position the plate fin for measurement, lower the handle and read the indicator outputs. An application for the present invention is to monitor the output of a fin press used in manufacturing plate fins for quality assurance and fin die adjustment purposes.
REFERENCES:
patent: 3769713 (1973-11-01), Norman
patent: 4112579 (1978-09-01), Kaye
Gray Kenneth P.
McDonough Michael L.
Carrier Corporation
Haroian Harry N.
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