Process for producing tooth brushes and blanks for use for same
OwnerRolf Barmaninventor
Life of this patent
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Abstract
A process for producing a toothbrush produced thereby have the cavities (11, 12) arranged on the back side of the tooth brush head. The longitudinal axes (14a, 15a) for angling the head portions (13, 14, 15) relative to each other are arranged on or at the bristle-carrying side of the head portion directly opposite the associated cavity (11, 12). A blank for carrying out the process and a toothbrush produced thereby have the cavities (11, 12) arranged on the back side of the toothbrush head. The longitudinal axes (14a, 15a) for angling the head portions (13, 14, 15) relative to each other are arranged on or at the bristle-carrying side of the head portion directly opposite the associated cavity (11, 12).
Claims14
A process for producing a toothbrush comprising the steps of
- providing a toothbrush blank having a central head portion and a pair of end head portions disposed in coplanar relation, a plurality of bristles extending from each head portion on one side of the blank and a plurality of grooves on an opposite side of the blank, each groove being disposed between said central head portion and an adjacent end head portion;
- heating the blank in the region of the grooves while bending each end head portion relative to said central head portion in a direction to close the grooves;
- thereafter cutting the bristles to form rows of bristles of different lengths;
- and
- thereafter heating the bent blank in the region of the grooves while bending each end head portion relative to said central head portion in a direction to open the grooves.
A process for producing a toothbrush comprising the steps of
- providing a toothbrush blank having a central head portion and a pair of end head portions disposed in coplanar relation, a plurality of bristles extending from each head portion on one side of the blank and a plurality of grooves on an opposite side of the blank, each groove being disposed between said central head portion and an adjacent end head portion;
- and
- heating the blank in the region of the grooves while bending each end head portion relative to said central head portion in a direction to open the grooves.
A process for producing a toothbrush comprising the steps of
- providing a toothbrush blank having a plurality of heat portions, a plurality of bristles extending from each head portion on one side of the blank and a plurality of grooves on an opposite side of the blank, each groove being disposed between adjacent heat portions;
- and
- heating the blank in the region of the grooves while bending each head portion relative to an adjacent head portion in a direction to open the grooves.
Dependencies are inferred from the claim text.