Relief vent for pressurized cans

Details Relief vent for pressurized cans Relief vent for pressurized cans

1975-12-23

1977-01-18

Knowles, Allen N.

Dispensing

With discharge assistant

Fluid pressure

B65D 8314

Patent

active

040035050

ABSTRACT:
An aerosol dispenser can has a cylindrical body and an outwardly-concave bottom divided into an outer annular frusto-spherical part and a central dome like part by a plurality of discrete generally tangential scores spaced apart in circular configuration, the central part having a greater radius of curvature than the outer part. Generally tangential scores may also be spaced around a rolled rim at the edge of the bottom. These scores weaken the resistance of the bottom to outward deformation so that in the case of a certain internal overpressure, the bottom firstly deforms outwardly and one or more scores then gradually rip, without propagation of the ripping, to release the overpressure. The neighboring ends of adjacent scores may be arranged out of alignment with one another to prevent propagation of ripping from one score to the next.

REFERENCES:
patent: 3029987 (1962-04-01), Gronemeyer
patent: 3074602 (1963-01-01), Shillady et al.
patent: 3244316 (1966-04-01), Atkinson et al.
patent: 3680743 (1972-08-01), Reinnagel
patent: 3724727 (1973-04-01), Zundel
patent: 3826412 (1974-07-01), Kneusel
patent: 3831822 (1974-08-01), Zundel

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