Patents by Inventor Armin Seifert

Armin Seifert has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method of producing thick-walled brushes, in particular toothbrushes
    Patent number: 6919038
    Abstract: The present invention relates to a method of producing thick-walled brushes, in particular toothbrushes, with a grip piece and a brush head supporting bristle filaments. In order to increase the productivity, the method mentioned at the start is further developed by the present invention in that a core produced in a first injection molding cycle is coated with a plastic component in at least one subsequent injection molding cycle so as to form a multi-layered grip piece.
    Type: Grant
    Filed: January 17, 2003
    Date of Patent: July 19, 2005
    Assignee: M + C Schiffer GmbH
    Inventors: Berthold Meyer, Andreas Walgenbach, Armin Seifert
  • Method for producing brushes and apparatus for performing said method
    Patent number: 6808236
    Abstract: A method for producing toothbrushes by way of injection molding is provided, wherein a brush body is formed in a mold cavity, bristle filaments are connected to the brush body for forming bristles, and at least one flexible element extending substantially in parallel with the bristle filaments is preferably formed by injection onto the brush body. The contouring and/or finishing of the bristle filaments can be carried out without any impairment by the flexible cleaning elements. During the finishing operation, the flexible cleaning element is removed from the operative area of the finishing tool.
    Type: Grant
    Filed: June 20, 2002
    Date of Patent: October 26, 2004
    Assignee: M+C Schiffer GmbH
    Inventors: Andreas Lanvers, Erwin Buchholz, Armin Seifert
  • Method of producing thick-walled brushes, in particular toothbrushes
    Publication number: 20030135943
    Abstract: The present invention relates to a method of producing thick-walled brushes, in particular toothbrushes, with a grip piece and a brush head supporting bristle filaments. In order to increase the productivity, the method mentioned at the start is further developed by the present invention in that a core produced in a first injection molding cycle is coated with a plastic component in at least one subsequent injection molding cycle so as to form a multi-layered grip piece.
    Type: Application
    Filed: January 17, 2003
    Publication date: July 24, 2003
    Applicant: M + C SCHIFFER GMBH
    Inventors: Berthold Meyer, Andreas Walgenbach, Armin Seifert
  • Method for producing brushes and apparatus for performing said method
    Publication number: 20030001427
    Abstract: The present invention relates to a method for producing brushes, in particular toothbrushes, by way of injection molding, wherein a brush body is formed in a mold cavity, bristle filaments are connected to the brush body for forming bristles, and at least one flexible element extending substantially in parallel with the bristle filaments is preferably formed by injection onto the brush body. It is the object of the present invention to improve the above-mentioned method such that contouring and/or finishing of the bristle filaments can be carried out without any impairment by the flexible cleaning elements. According to the invention said object is achieved in that the useful ends of the brush are finished, the at least one flexible cleaning element being removed from the operative area of the finishing tool during said finishing operation.
    Type: Application
    Filed: June 20, 2002
    Publication date: January 2, 2003
    Inventors: Andreas Lanvers, Erwin Buchholz, Armin Seifert
  • Toothbrush
    Patent number: 6374448
    Abstract: The present invention relates to a brush, in particular a toothbrush, comprising a brush body carrying cleaning elements and a perforated plate through which the cleaning elements are projecting. A brush which is improved in terms of hygiene is created by the present invention in that the cleaning elements are arranged on a bristle carrier which is in threaded engagement with the brush body, and that the perforated plate is rotatably held on the brush body. Furthermore, the present invention suggests a bristle insert as a replacement part for said brush.
    Type: Grant
    Filed: April 12, 2001
    Date of Patent: April 23, 2002
    Assignee: M+C Schiffer GmbH
    Inventor: Armin Seifert
  • Toothbrush
    Publication number: 20010029639
    Abstract: The present invention relates to a brush, in particular a toothbrush, comprising a brush body carrying cleaning elements and a perforated plate through which the cleaning elements are projecting. A brush which is improved in terms of hygiene is created by the present invention in that the cleaning elements are arranged on a bristle carrier which is in threaded engagement with the brush body, and that the perforated plate is rotatably held on the brush body. Furthermore, the present invention suggests a bristle insert as a replacement part for said brush.
    Type: Application
    Filed: April 12, 2001
    Publication date: October 18, 2001
    Inventor: Armin Seifert