Patent ID: 8387568

Claim:
A litter box liner in the form of a bag made of flexible sheet material and being convertible from a first folded, lay flat configuration to a second, unfolded use configuration; a) the liner in the folded lay flat configuration including: i) first and second face panels, each face panel having opposing side edges, a top edge and a bottom edge; ii) each of the side edges having a first segment extending vertically downward from said top edge and a second segment angled inwardly and downwardly and connecting the first segment to the bottom edge; and iii) a pair of gussets connecting the first face panel to the second face panel along respective side edges; iv) the first and second face panels also being joined together along their respective bottom edges; and b) the liner when unfolded to the second use configuration and prior to insertion within a litter box forming a four sided standup bag having upstanding walls defined by portions of the gussets joined to said face panels along the first segments, a rectangular prismatic upper portion, and a trapezoidal pyramidal bottom portion defined by portions of the gussets joined to the face panels along the second segments; c) the liner as unfolded having a maximum footprint defined by an open top perimeter edge comprising the upstanding first and second face panels and adjoining gussets; d) wherein the bottom portion lacks any fold overs when the liner is unfolded for use with a litter box having a foot print smaller than the maximum footprint.