Abstract: Complementary load bearing surfaces are provided on a child resistant closure and container combination forming at least one load carrying member preventing axial forces under stacking load conditions from causing biasing, child resistance, and/or seal failure when the closure is in a stacking position on the complimentary container.

Abstract: A push and turn child resistant closure is provided which includes a combined over cap and under cap, the under cap freely rotational within the over cap and the combined closure installed on the container. For removal of the combined closure, both downward and counter-clockwise rotational force is applied to the over cap, the rotational force imparted on the under cap more readily by utilization of a friction ring at the engagement area between the over cap and the under cap while also having an outer gripping ring of highly frictional material making it much more easily rotatable and graspable by a user. The use of a highly frictional material more readily imparts rotational force on the under cap when utilized as depicted herein.

Abstract: The present invention is directed to a method for filtering fluid, preferably effluent fluid in a septic system, by providing a staged, filtering array in an effluent flow path, the stages positioned in an orientation designed to maximize filtering capability in conjunction with predetermined aperture positions and dimensions.