US 2013/0048635 A1 · Oil-less pressure relief valves

Abstract

A self contained one-way pressure relief valve for application to product packaging that does not require the addition of a sealing lubricant. Atop a base with an opening extending through is an adhesive-like material layer, and a dry strap of a silicone or other release film coated membrane, all of which are of gas impervious materials. The release coated material layer covering the opening with the release film in contact with the adhesive-like material creating a surface attraction between the release film and the adhesive-like material. An intermediate layer of gas impervious material with an opening extending through provides for including a gas pervious filter material layer that may be for fine particulates or liquid proof.

Claims24

Dependent claims

A self contained one-way pressure relief valve for application to product packaging, that does not require the addition of a sealing lubricant, comprising:

a gas impervious base layer having a top and bottom;
an opening extending through the base layer from top to bottom;
a gas impervious adhesive-like material layer atop the base layer and covering the opening extending through the base layer;
a gas impervious silicone or other release film coated membrane;
and
the release film coated membrane covering the opening extending through the base layer with the release film in contact with the adhesive-like material creating a surface attraction between the release film and the adhesive-like material.

3 more elements

A pressure relief valve for application to product packaging comprising:

a gas impervious base layer having a top and bottom;
an opening extending through the base layer from top to bottom;
a gas impervious layer atop the base layer and covering the opening extending through the base layer;
a gas impervious intermediate layer having a top and bottom between the layer atop the base layer and the base;
an opening extending through the intermediate layer from top to bottom and generally aligned with the opening in the base and the opening in the layer atop the base layer;
a filter material layer between the openings of the intermediate layer and the base;
a gas impervious layer of adhesive between the intermediate layer and the filter material layer;
and
an opening extending through the layer of adhesive between the intermediate layer and the filter material layer, and generally aligned with the openings of the layer atop the base layer, the intermediate layer, and the base.

6 more elements

Dependencies are inferred from the claim text.

Oil-less pressure relief valves

Life of this patent

Oil-less pressure relief valves

Life of this patent

Abstract

Claims24