Safety vent for containers

Receptacles – Container attachment or adjunct – Pressure relief means

Patent

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Details

137 681, 222397, B65D 5116, B65D 8314, F16K 1714

Patent

active

045881014

ABSTRACT:
A safety vent for an internally pressurized fluid container is disclosed. The safety vent is provided in a wall of the container which is subject to outward deformation when the internal pressure of the container exceeds a predetermined level. The wall has a weakened line of reduced material thickness formed therein which is adapted to fracture to vent the pressurized fluid from the container in response to the stresses therein during the outward deformation of the wall. The wall further includes an elongated rib formed therein with at least one end of the line proximate the weakened line of reduced material thickness. The rib locally weakens the resistance of the wall to outward deformation so that outward deformation of the wall is initiated adjacent the location of the rib. The direction in which deformation progresses and the pressure level at which deformation begins are also controlled by the direction and dimensions of the rib whereby the pressure range for release is less dependent on the residual thickness of the material at the weakened line.

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patent: 3405838 (1968-09-01), Preisendanz
patent: 3724727 (1973-04-01), Zundel
patent: 3815534 (1974-06-01), Kneusel
patent: 3826412 (1974-07-01), Kneusel
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patent: 3979009 (1976-09-01), Walker
patent: 4003505 (1977-01-01), Hardt
patent: 4416388 (1983-11-01), Mulawski
patent: 4513874 (1985-04-01), Mulawski

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