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Toothbrush having improved tuft retention and anchor wire

A toothbrush and cluster hole technology, applied in the field of improved anchor or staple design, can solve the problems that brass staples cannot be used to make toothbrush clusters, low efficiency, etc.

Inactive Publication Date: 2012-05-23
COLGATE PALMOLIVE CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the general concept of using brass staples is disclosed, testing and experimentation have demonstrated that merely forming and using flat-faced brass staples cannot be used to manufacture toothbrushes to provide effective cluster retention
Furthermore, employing only known groove patterns proved to be inefficient

Method used

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  • Toothbrush having improved tuft retention and anchor wire
  • Toothbrush having improved tuft retention and anchor wire
  • Toothbrush having improved tuft retention and anchor wire

Examples

Experimental program
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Embodiment Construction

[0036] see now Figure 1 to Figure 3 , shows a staple 100 according to an embodiment of the present invention. Staple 100 is a flat wire segment that is used as an anchor in a brush implement, particularly a toothbrush, to secure U-shaped bristle tufts within tuft holes formed in the head of a handled implement such as a toothbrush. Staple 100 has a substantially rectangular cross-section (longitudinal and cross-section) and is elongated along longitudinal axis A-A. Of course, other shapes can be utilized to form the staple.

[0037]The staple 100 is delimited by a perimeter comprising a top edge 10 , a bottom edge 11 , a first side edge 12 and a second side edge 13 . The staple 100 has a length L, a height H and a thickness t. The length L of the staple 100 will depend on the size of the tuft hole into which it is inserted, but for a 1.7mm tuft hole a preferred range is 2.09 to 2.13 mm, and most preferably about 2.11 mm. Staple 100 height H also depends on the size of its...

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PUM

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Abstract

An ansate implement, especially a toothbrush (200), having improved tuft retention and a staple (100) 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 (220); a head (210) connected to said handle and having at least one hole (215) extending into the head from a surface (211); at least one cleaning element (50) 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 (A-A) and a first major surface (20), wherein a plurality of spaced apart grooves (30) are formed into the first major surface, each of the grooves extending along a linear axis (B-B) from a bottom edge (111 ) of the staple toward a top edge (10) of the staple, the linear axis intersecting the longitudinal axis at an acute angle (Theta) of 40 to 70 degrees.

Description

technical field [0001] The present invention relates generally to brushes, particularly toothbrushes, and in particular to an improved anchor or staple design for securing bristle tufts within a brush head. Background technique [0002] During the conventional manufacture of brushes, particularly toothbrushes, the brushes are injection molded with empty tuft holes in the toothbrush head. Tuft holes may also be drilled after injection molding and initially formed in the head simultaneously with injection molding. In a second operation, the U-shaped bristle tufts are inserted into the holes in the head. Each tuft of bristles is held in place by a plate-shaped staple that is wider than the tuft hole so that when the staple is used to drive the U-shaped bristle tufts into the tuft hole, the edges of the staple cut the sides of the hole slightly and of deformation. The pressure of the surrounding plastic on the staple and the resulting stiction help to force the staple into pl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A46B3/16
CPCA46B2200/1066A46B3/16A46B9/04
Inventor F·P·帕丘罗
Owner COLGATE PALMOLIVE CO