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US 4,064,053 AGranted
Strainer improvement
AssigneeLouis M. Gerson Co., Inc.
InventorsRonald L. Gerson, Lawrence A. Caprio
Life of this patent
Estimating the term…
Abstract
A strainer blank comprises a flat sheet having a plurality of cutouts including a cutout adapted to define a strainer portion at the apex of a cone formed from the blank. Strainer material positioned over the cutouts defines a convex rear end at the apex which is folded during formation of the conical strainer to form a multi-ply elongated seam which adds strength and provides a surface area for adhesively uniting the strainer material.
Claims4
A paint strainer blank comprising
- a flat sheet body having a first end, a second end and configured to be folded into a generally conical strainer shape,
- said sheet body defining a plurality of cutouts including a cutout opening defined by said second end which forms a truncated portion of the conically folded sheet to define an apex portion of said generally conical strainer shape,
- a one-piece filter material overlying said flat sheet and covering said cutouts while being adhered to marginal portions thereof to form filter areas including a conical filter area at said apex portion,
- said material having a first end and a second end with said material second end defining a convex extension edge extending from said material second end at said apex portion and a corresponding concave portion at said material first end.
1 more element
Dependencies are inferred from the claim text.