Claims
- 1. A process for executing profiling trimming cuts in a bristle field of a toothbrush, said bristle field comprising separate bundles of fibers, each fiber having a free end which extends in a first direction from a body of the brush and an area of the field having a longitudinal axis substantially perpendicular to the fibers, the process comprising the steps of:
- cutting off all of the fibers in the bristle field at a highest level;
- deflecting a first portion of the fibers in each bundle in the bristle field which are to form a highest profile level with a first pusher element having a first width in a direction essentially lateral to said first direction such that a second portion of the fibers remains undeflected extending in the first direction;
- cutting the second portion of undeflected fibers at the free ends with a cutter to a height which is less than the height of the fibers in the highest profile level to form a second highest profile level;
- deflecting the first portion of the fibers in each bundle of the bristle field and a third portion of fibers selected from the previously undeflected and cut second portion with a second pusher element having a second width, which is wider than the first width, in a direction essentially lateral to said first direction such that a fourth portion of the fibers remains undeflected extending in the first direction; and
- cutting the fourth portion of undeflected fibers at the free ends with a cutter to a height which is less than the height of the fibers in the second highest profile level to form a third highest profile level such that each bundle of fibers in the bristle field includes fibers from the first, second and third highest profile levels.
- 2. The process of claim 1 further comprising the step of:
- rounding off the free ends of fibers before the first portion of fibers is deflected;
- rounding off the free ends of the fibers in the second highest profile level after deflecting the first portion of fibers; and
- rounding off the free ends of the fibers in the third highest profile level after the third portion of the fibers is deflected.
- 3. The process of claim 2 wherein the cutting and rounding off steps are carried out simultaneously by a single processing tool at each profile level.
- 4. A process for executing profiling trimming cuts in a bristle field of a toothbrush, said bristle field comprising separate bundles of fibers, each fiber having a free end which extends in a first direction from a body of the brush and an area of the field having a longitudinal axis substantially perpendicular to the fibers, the process comprising the steps of:
- deflecting a first portion of the fibers in each bundle in the bristle field which are at a highest profile level with a first pusher element having a first width in a direction essentially lateral to said first direction such that a second portion of the fibers which are to form the lowest profile level remains undeflected extending in the first direction;
- cutting the second portion of undeflected fibers at the free ends with a cutter to form the lowest profile level;
- deflecting a third portion of the fibers in each bundle of the bristle field selected from the fibers in the first portion with a second pusher element having a second width, which is narrower than the first width, in a direction essentially lateral to said first direction such that a fourth portion of fibers from the previously deflected first portion remains undeflected extending in the first direction; and
- cutting the fourth portion of undeflected fibers at the free ends with a cutter to a height which is higher than the height of the fibers in the lowest profile level to form a second profile level such that each bundle of fibers in the bristle field includes fibers from the lowest, second and highest profile levels.
- 5. The process of claim 4 further comprising the step of:
- rounding off the free ends of the undeflected fibers before the first portion of fibers is deflected;
- rounding off the free ends of the fibers in the lowest profile level after deflecting the first portion of fibers; and
- rounding off the ends of the free ends of the fibers in the second profile level after deflecting the third portion of the fibers.
- 6. The process of claim 5 wherein the cutting and rounding off steps are carried out simultaneously by a single processing tool at each profile level.
Priority Claims (1)
Number |
Date |
Country |
Kind |
43 30 029.4 |
Sep 1993 |
DEX |
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Parent Case Info
This is a division of application Ser. No. 08/207,431, filed Mar. 17, 1994 now U.S. Pat. No. 5,472,263.
US Referenced Citations (10)
Foreign Referenced Citations (4)
Number |
Date |
Country |
0078569A3 |
May 1983 |
EPX |
0458999A1 |
Dec 1991 |
EPX |
4138777A1 |
May 1993 |
DEX |
WO9312691 |
Jul 1993 |
WOX |
Divisions (1)
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Number |
Date |
Country |
Parent |
207431 |
Mar 1994 |
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