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
Sound producing apparatus for vehicle
Analysis of methylation using nucleic acid arrays
Watch chain
Optical input device
Method for producing purified influenza virus antigen
SONOS stack with split nitride memory layer
Memory device program window adjustment
  Randomly Featured Patents
Semiconductor integrated circuit, delay-locked loop having the same circuit, self-synchronizing pipeline type system, voltage-controlled oscillator, and phase-locked loop
NC data creation method
Cantilever carousel system
Image forming apparatus with anti-banding implementation
Hermetically sealed relay having low permeability plastic housing
Elective herbicide compositions having a prolonged action containing .alpha .
Crystalline tripeptide epoxy ketone protease inhibitors
Two-step connecting element
System and method for automatically creating and updating a mobile station configuration database in a wireless network
Hydraulic railroad car door with program plate