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Toothbrushes

  • US 5,184,368 A
  • Filed: 12/13/1990
  • Issued: 02/09/1993
  • Est. Priority Date: 11/20/1990
  • Status: Expired due to Fees
First Claim
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1. A brush including a handle at one end and a brush head at the opposite end, said brush head including a plurality of bristle holders and spring means normally urging at least some of the bristle holders outwardly but permitting their inward movement during use of the brush head;

  • characterized in that said spring means comprises;

    a planar strip of elastic material formed with a plurality of spirally-extending slits at spaced locations of the planar strip underlying each of said bristle holders, to define a spirally-extending element integrally formed with said strip at each of said locations and in the same plane as said strip;

    each of said spirally-extending elements being pressed out of the plane of said strip to produce a helically extending spring element underlying each of said bristle holders and decreasing in diameter from said strip to the bristle holder.

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