Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Wafer-level chip scale package
Method of manufacturing pipe with branch
Providing a web page to a client
Generalized AC-DC synchronous rectification techniques for single- and multi-phase systems
Disk drive to enable defect margining
Semiconductor memory device
Segmented display panel and camera with segmented display
  Randomly Featured Patents
Process for preparing 4,4'-isopropylidenedithio-bis-(2,6-di-tertiarybutylphenol) by electrocatalysis
Method of recovery for nitramines from aluminized energetic materials
Active matrix OED array with improved OED cathode
Light-emitting device and process for production thereof having an emission laser held between electrodes
USB networking on a multiple access transmission medium
Plastic grocery bag dispenser with side panels and guide bar
Paper coating pigments
Computer system architecture for performing nested loop operations to effect a discrete Fourier transform
Anechoic and decoupling coating
System and method for managing data in memory for reducing power consumption