Painter's accessory

Claim 1

A can top accessory of at least slightly elastic material comprising an annular body having an axis and including an inner wall and an outer wall spaced by a generally radial interconnecting web from which said walls project in the same direction, said walls being defined by closed circular cylindrical surfaces and said outer wall being of greater axial extent than said inner wall, said inner wall being of substantially uniform axial extent and said outer being of substantially uniform axial extent except for a notch extending, in both directions from a predetermined axial location about said axis, around less than half the circumference of said outer wall, and said web defining the segment, of a circular cone having a large apex angle, between spaced truncating planes perpendicular to said axis; a sealing ridge projecting toward said outer wall from said inner wall, spaced axially from said web and extending in both directions from said predetermined angular location around substantially half the circumference of said inner wall; and a pouring lip comprising an outward radial extension of said web in said cone, of limited extent radially and of limited angular extent about said predetermined location.