Patent · US Expired

Toothbrush with paste cartridge

US3937235A · kind A · utility

34Cited by
5References
8Claims
0Family size

Inventor

Key dates

Filing dateDec 5, 1974
Grant dateFeb 10, 1976
Priority date—
Expiry dateDec 5, 1994

Classification

  • Technology area (CPC A)Human Necessities
  • CPC primaryA46B2200/1066
  • WIPO fieldOther consumer goods
  • WIPO sectorOther fields

Abstract

Toothbrush handle includes reservoir for pressurized toothpaste. Outflow of toothpaste is controlled by a ball valve which is unseated by motion of the tooth with respect to its handle. Passages through the shank of the brush into the brush back and directed into the bristles convey the toothpaste into the bristle zone.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.