Patent · US Expired

Container having flexible walls and two chambers which are kept separate until the container is opened

US4062477A · kind A · utility

12Cited by
7References
9Claims
0Family size

Assignee

Inventor

Key dates

Filing dateNov 30, 1973
Grant dateDec 13, 1977
Priority date—
Expiry dateNov 30, 1993

Classification

  • Technology area (CPC B)Performing Operations; Transporting
  • CPC primaryB65D25/082
  • WIPO fieldHandling
  • WIPO sectorMechanical engineering

Abstract

Tube having flexible walls and a neck separated from the remainder of the tube by a transverse wall having an opening therein closed by a plug adapted to be expelled from the orifice when the tube is squeezed. The plug is cup-shaped and made of a rubbery material so as to increase the permissible manufacturing tolerances.

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