Toothbrush having improved tuft retention and anchor wire

• US 8,726,447 B2
• Filed: 03/13/2013
• Issued: 05/20/2014
• Est. Priority Date: 07/01/2009
• Status: Active Grant

• Current Assignee: Colgate-Palmolive Company
• Original Assignee: Colgate-Palmolive Company
• Inventors: Paciullo, Francis Patrick
• Primary Examiner(s): CHIN, RANDALL E
• Application Number:
  US13/799,712
• Publication Number:
  US 20130192012A1
• Time in Patent Office: 433 Days
• Field of Search: 151/90, 151/911, 151/95, 152/05, 151/671
• US Class Current: 15/167.1
• CPC Class Codes: A46B 2200/1066 Toothbrush for cleaning the teeth or dentures A61C17/16 takes precedence; bristles arrangements for toothbrushes A46B9/04
• CPC Class Codes: A46B 3/16 by wires or other anchoring means, specially for U-shaped bristle tufts
• CPC Class Codes: A46B 9/04 Arranged like in or for toothbrushes

Abstract

An ansate implement, especially a toothbrush, having improved tuft retention and a staple for use therewith. The staple has a specially designed topography that provides reliable anchoring and creation from cost effective materials. In one embodiment, the invention is an ansate implement comprising: a handle; a head connected to said handle and having at least one hole extending into the head from a surface; at least one cleaning element positioned in the hole; and a staple located in the hole anchoring the cleaning element in the tuft hole, the staple having a longitudinal axis and a first major surface, wherein a plurality of spaced apart grooves are formed into the first major surface, each of the grooves extending along a linear axis from a bottom edge of the staple toward a top edge of the staple, the linear axis intersecting the longitudinal axis at an acute angle of 40 to 70 degrees.

Claims

1. A toothbrush comprising:

a handle;

a head connected to said handle and having at least one tuft hole extending into the head from a surface;

at least one tuft of bristles positioned in the tuft hole;

a staple located in the tuft hole anchoring the tuft of bristles in the tuft hole, the staple having a longitudinal axis, a first major surface, and a second major surface;

a first set of substantially parallel grooves formed into the first major surface of the staple, each of the grooves in the first set extending along a linear axis from a bottom edge of the staple to a top edge of the staple and slanting upward from a first lateral edge of the staple to a second lateral edge of the staple, the linear axis of the first set of grooves intersecting the longitudinal axis at a first acute angle; and

a second set of substantially parallel grooves formed into the second major surface of the staple, each of the grooves in the second set extending along a linear axis from the bottom edge of the staple to the top edge of the staple and slanting upward from the second lateral edge of the staple to the first lateral edge of the staple, the linear axis of the second set of grooves intersection the longitudinal axis at a second acute angle; and

wherein each of the grooves in the first and second sets has a width, wherein adjacent grooves in each of the first and second sets are separated by a distance, and wherein a ratio of the distance to the width is 3.0 to 4.0.

2. The toothbrush of claim 1 wherein the first acute angle is of 40 and 70 degrees and the second acute angle is of 40 and 70 degrees.

3. The toothbrush of claim 2 wherein the first and second acute angles are approximately 60 degrees.

4. The toothbrush of claim 1 wherein the grooves of the first and second sets are evenly spaced apart and cover the substantial entirety of the first and second major surfaces respectively.