초록 ▼

A trap device for placement on the overflow standpipe provided in the sump of an evaporative cooler for blocking the high velocity inflow of sewer gasses or other contaminants through the standpipe into the cooler during operation thereof without interfering with the water draining functions of the

A trap device for placement on the overflow standpipe provided in the sump of an evaporative cooler for blocking the high velocity inflow of sewer gasses or other contaminants through the standpipe into the cooler during operation thereof without interfering with the water draining functions of the standpipe. The trap device is in the form of an inverted cupshaped body which is mountable in substantially concentric relationship with the standpipe and has a closed top which is spaced above the top of the standpipe and an open bottom end which is submerged in the operational water supply contained in the sump of the evaporative cooler. The closed top of the trap device is provided with a knock-out plug so that the drain hose of a bleed-off system may be sealingly inserted therein when the cooler is so equipped.

대표청구항 ▼

A trap device for use with an evaporative cooler of the type having a sump in the bottom thereof for containment of an operational water supply and having an open overflow standpipe in the sump, said trap device comprising: (a) a body of inverted cup-shaped configuration having a closed top end and

A trap device for use with an evaporative cooler of the type having a sump in the bottom thereof for containment of an operational water supply and having an open overflow standpipe in the sump, said trap device comprising: (a) a body of inverted cup-shaped configuration having a closed top end and an open bottom end; (b) standoff means on said body for positioning said body in spaced substantially concentric relationship with the standpipe of the evaporative cooler with the closed top end of said body in upwardly spaced relationship with the top of the standpipe and the open bottom end of said body positioned between the bottom of the sump of the evaporative cooler and the normal water level line of the sump; and (c) knock-out plug means located centrally in the closed top end of said body for selective removal to provide an opening through the closed top end of said body.