Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1995-08-08
1997-09-16
Moore, Chris K.
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
239112, E03D 900
Patent
active
056666900
ABSTRACT:
Condensation line purging devices and assemblies. The present invention relates to devices and assemblies for purging HVAC condensation lines. Such lines are relatively delicate, as opposed, for instance, to drain lines and plumbing systems. Accordingly, devices of the present invention include a body which is adapted to contain a conventional gas cylinder such as a 12 gram CO.sub.2 cylinder. The body is adapted to connect to a nozzle which in turn is connected to a connector that is attached to the condensation line. The body may be rotated onto the nozzle in a manner that controllably releases gas pressure from the gas cylinder into the condensation line so as to cause a pressure buildup that effectively purges the condensation line without breaching its seals or other discontinuities. Such control may occur by virtue of the shape of a pin protruding from the interior portion of the nozzle and adapted to penetrate the gas cylinder. It may occur by virtue of the shape of the pin in cooperation with the gas cylinder and in further cooperation with shoulders formed on the nozzle and body which control their rotational relationship. Such control may also occur by the manner in which the body and nozzle are rotated relative to one another during the purging process. Accordingly, devices according to the present invention allow a great degree of flexibility and control in carefully purging gas condensation lines with a minimum of time, effort and expense and with lower risk of damage to the lines.
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Ewing, IV James L.
Moore Chris K.
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