Vacuum sizing apparatus with controlled vacuum

Plastic article or earthenware shaping or treating: apparatus – Including means advancing continuous length work through...

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264 403, 264562, 264571, 425149, 425162, 425170, 4253261, 425388, B29C 3500

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active

053402952

ABSTRACT:
A vacuum sizing apparatus with a controlled vacuum is provided. The vacuum is precisely controlled by the use of a variable speed motor driven vacuum pump and a step motor controlled vent valve. An electrical circuit containing a microprocessor coordinates the speed of the motor driven vacuum pump with the position of the vent valve to give precise vacuum control within the vacuum chambers of the sizing apparatus. A closed sump tank contains water for the water system of the apparatus and is maintained at the same vacuum level as the vacuum chambers within the sizing apparatus.

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Two page brochure of Conair-Gatto entitled "HT Series High Technology Differential Pressure Calibrator".

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