US Patent No: 6,695,414

Number of patents in Portfolio can not be more than 2000

Method of manufacturing a brush head by way of an injection molding process




Loading Importance Indicators... loading....


See full text

The present invention relates to a method of manufacturing a brush head comprising a brush head body carrying bristle bundles, in particular for tooth brushes, by way of injection molding, in which a first plastic component is injected into a first mold cavity for forming a bristle carrier, and ends of bristle filaments projecting into the first mold cavity are encompassed by the first plastic component. In order to guarantee a complete filling of the mold and a favorable reproduction of the mold cavity geometry, but to avoid at the same time a penetration of plastic mass into ducts in which the bristle filaments are held, it is suggested by the present invention that the bristle carrier manufactured during the first step is relocated into another mold cavity, which is larger than the bristle carrier, and which is filled with a hard component. The present invention further relates to a brush head, in particular for a tooth brush, comprising at least one brush head body carrying a bristle bundle in which the fixing-sided ends of bristle filaments are embedded by an over-molding, wherein it is suggested according to the invention in order to provide a brush head complying with the above-mentioned demands, that the brush body comprises a bristle carrier encompassing the bristle filaments on the attachment side, the bristle carrier being embedded into a hard component.

Loading the Abstract Image... loading....

First Claim

See full text


Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddressTotal Patents

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]


Inventor Name Address # of filed Patents Total Citations
Broecker, Gerd Ruescheid, DE 3 40
Meyer, Berthold Neustadt/Wied, DE 10 272

Cited Art Landscape

Patent Info (Count) # Cites Year
M+C Schiffer GmbH (3)
5,054,154 Toothbrush with flexible head 162 1989
* 5,458,400 Method of manufacturing of brushes, in particular, tooth brushes 23 1994
* 6,311,360 Brush and method of producing the same 48 1998
Coronet-Werke Heinrich Schlerf GmbH (1)
* 5,045,267 Process and apparatus for producing bristle articles 11 1989
* 5,761,759 Toothbrush and method for making such toothbrush 91 1995
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
* 2005/0146,200 Methods of manufacturing toothbrushes 1 2005
D688875 Cleaning element for a toothbrush or the like 0 2011
9,144,299 Method and device for producing a brush head section for an oral care device and brush head section produced by said method and/or said device 0 2012
* 2010/0175,708 MASCARA BRUSH 13 2008
M+C Schiffer GmbH (2)
* 6,919,038 Method of producing thick-walled brushes, in particular toothbrushes 26 2003
* 2003/0135,943 Method of producing thick-walled brushes, in particular toothbrushes 8 2003
* 9,210,995 Toothbrush 0 2012
* 2014/0082,871 TOOTHBRUSH 0 2012
8,161,592 Cleaning implement 0 2006
D572013 Broom body 7 2006
D572014 Broom body 4 2006
8,485,611 Cleaning implement 2 2012
* Cited By Examiner