Resources Contact Us Home
Plaque jack toothbrush

Image Number 4 for United States Patent #3978852.

A powered toothbrush cleans teeth and related embrasures by mechanically driving a small tuft of brush elements axially against the tooth surfaces to remove plaque and into and through the embrasures to push out food particles from the embrasures.The brush elements in the tuft have a length, texture, density, configuration and/or taper which enable the brush elements (particularly in the central part of the tuft) to penetrate directly into and through the embrasures while retaining sufficient flexibility (particularly on the periphery of the tuft) to effectively scour plaque from both convex and concave tooth surfaces as these brush elements are deflected toward lateral movement along the tooth surfaces by inward driving movement of the brush elements against the tooth surfaces.The tuft configuration and construction and the axial driving movement of the tuft enable the toothbrush to clean all normal tooth embrasures, regardless of the inclination of the brush handle between verticle and horizontal attitudes; and the size and shape of the tuft enable the brush to be effectively used to clean not only embrasures such as exist between adjacent teeth at the gum line but also crevices in tooth surfaces, the gingival (gum) cuff of both normal and diseased gums, the spaces between orthodontic applicances and teeth, the embrasures existing between bridgework and gums and such normally hard to clean spaces and surfaces as the embrasures between the roots of a tooth resulting from periodontal (gum) surgery.

  Recently Added Patents
Method and mobile device for awareness of language ability
Magnetoresistive shield with coupled lateral magnet bias
Superconducting magnetizer
Method and apparatus for belling plastic pipe
Micromechanical component, device for beam deflection of monochromatic light, and spectrometer
Sampling switch circuit that uses correlated level shifting
Hardware/software debugging using memory access parameters
  Randomly Featured Patents
Three-dimensionally adjustable fulcrum support aid for easy chairs
Torchiere floor lamp having hidden light
Expandable fishing lure
Fuel cell stack
End plate connection unit for beams
Musical piece extraction program, apparatus, and method
Fisherman's all purpose boat mounted stand
Intelligent system and method for monitoring generator reactive power limit using machine model parameters
Screw feeding device in continuous screw driving tool
Process of plating selective areas on a printed circuit board