FLEXIBLE WIRE BRISTLE BRUSH WITH INCREASED DURABILITY

摘要

A brush having bundles of wire bristles which extend from a retaining base wherein the brush also includes deflection support guides for the bundles with openings which surround and contact the active portions of the bundles when the bundles flex during use.

主权项

1. A wire bristle brush comprising:
a retaining base; one or more bundles of wire bristles, each said bundle comprising a proximal end portion which is retained in fixed position by said retaining base and a projecting active portion having an active length which extends longitudinally from an initial bend point of said bundle to a distal end of said bundle, said bundle having a cross-sectional area at said initial bend point; and a deflection support guide for each said bundle comprising a support guide opening through which said bundle projects, said support guide opening having a longitudinally outermost contacting perimeter which surrounds said bundle for contacting said active portion of said bundle when said bundle flexes during use, wherein said longitudinally outermost contacting perimeter of said support guide opening is spaced longitudinally outward from said initial bend point of said bundle a longitudinal distance which is in a range of from 25% to about 67% of said active length of said bundle and said support guide opening has an opening area at said longitudinally outermost contacting perimeter which is from about 150% to about 700% larger than said cross-sectional area of said bundle at said initial bend point.