Patent ID: 6119903
Filing Date: 2000-09-19
Classification: B05C,B65D

Abstract:
An improved caulking cartridge, of the type having a substantially tubular body, a forward dispensing opening at a forward end of the tubular body, a backwall movably disposed within the tubular body, the tubular body having a wall with an inner wall surface defining an inner diameter of the tubular body, and the tubular body defining a chamber therein bounded by the inner wall surface, the forward end and the backwall, for storing therein a fluid composition to be dispensed through the forward dispensing opening, the improvement which comprises:the backwall having a diameter adapted to the inner diameter of the tubular body such that the fluid composition is allowed to flow into an annular space formed between the inner wall surface and a periphery of the backwall, whereby the backwall moves backwardly away from the forward end of the tubular body when a pressure inside the chamber is greater than a pressure outside the chamber.