Patent ID: 7971759
Filing Date: 2011-07-05
Classification: B65D,F17C,Y10T

Abstract:
1. In an aerosol container for dispensing a fluid product under pressure, a pressure relief mechanism for venting the container when it is subjected to an excessive pressure so to prevent the container from bursting, the container comprising: a container body of a hollow cylindrical shape, a valve assembly installed at one end of the container through which the pressurized contents of the container are expelled; an end piece attached to the container body at the other end of the container, the end piece having a first section of a first contour and a second section of a second contour surrounding the first section, the pressure relief mechanism comprising at least one score line formed across the transition between the first and second sections, the score line creating a line of weakness in the material from which the end piece is made for the end piece to fracture along the score line when the pressure within the container exceeds a predetermined pressure level to thereby vent the container in a controlled manner so that the container does not burst, the end piece being dome shaped with the first section of the end piece defined by a first radius and the second section thereof by a second and different radius, and the first section comprising a circular section having a flattened portion formed therein and the second section being ring shaped; and, a plurality of score lines formed at the transition between the first and second sections so to provide a plurality of lines of weakness in the material so to facilitate venting of the container.