FILTER CHECK

Brand	Owner (click to sort)	Address	Description
FILTER-CHEK	BAROID TECHNOLOGY, INC.	3000 NORTH SAM HOUSTON PARKWAY EAST HOUSTON TX 77032	FILTER CHECK;drilling fluid additive for filtration control in drilling fluids used for drilling oil and gas wells;
FILTERCHECK	SUNBEAM PRODUCTS, INC.	2381 Executive Center Drive Boca Raton FL 33431	FILTER CHECK;FILTER CHANGE MONITOR SOLD AS AN INTEGRAL COMPONENT OF HUMIDIFIERS; AND FILTER CHANGE MONITOR SOLD AS AN INTEGRAL COMPONENT OF AIR PURIFIERS;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

A filter assembly is provided that includes a hood, a drain manifold, a filter disposed between the hood and the drain manifold, a drainage space that is disposed between and in fluid communication with both the filter medium and the drain manifold, a check valve that is configured to permit air to escape but not to enter the drainage space so that a siphon can be established that draws additional fluid through the filter medium and into the drain manifold, the siphon continuing until air entering the hood disrupts the siphon, and a check valve cap that is configured to permit air to escape the check valve while preserving an air-filled void above the check valve when the filter assembly is submerged.