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US 12,009,641 B2Granted
Pressure relief device and housing comprising same
AssigneeR. Stahl Schaltgeräte GmbH
InventorThorsten Arnhold
Life of this patent
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Abstract
A pressure relief device including a gas-permeable body to which a membrane adheres that is preferably impermeable to moisture. The membrane can be a rubber membrane that is formed by applying liquid rubber to the pressure relief body and, optionally, a component which supports the liquid rubber and surrounds the pressure relief body.
Claims19
A pressure relief device configured for use with explosion-protected housings, the pressure relief device, comprising:
- a porous gas-permeable body having a first side facing in a first direction and a second side facing in a second direction, the second direction being away from the first direction;
- and
- a membrane attached to the porous gas-permeable body in a manner being in abutment against the porous gas-permeable body, wherein the membrane comprises a separate first layer comprising a foil that abuts against the porous gas-permeable body and a separate second layer applied to the foil such that the foil is located between the second layer and the porous gas-permeable body.
An explosion-protected housing, comprising:
- a housing wall defining an interior;
- at least one pressure relief opening in the housing wall in fluid communication with the interior;
- a pressure relief device sealing the at least one pressure relief opening, the pressure relief device, comprising:
- a porous gas-permeable body having a first side facing the interior in a first direction and a second side facing away from the interior in a second direction;
- and
- a membrane attached to the porous gas-permeable body in a manner being in abutment against the porous gas-permeable body, wherein the membrane comprises a separate first layer comprising a foil that abuts against the porous gas-permeable body and a separate second layer applied to the foil such that the foil is located between the second layer and the porous gas-permeable body.
3 more elements
A method for attaching a membrane to a porous gas-permeable body in order to provide a pressure relief device, comprising:
- providing a porous gas-permeable body, the porous gas-permeable body having a first side facing in a first direction and a second side facing in a second direction, the second direction being away from the first direction;
- applying a foil layer to the second side of the porous gas-permeable body;
- spraying of a non-cured membrane material on the foil layer after it has been applied to the second side of the porous gas-permeable body;
- and
- curing the non-cured membrane material.
2 more elements
Dependencies are inferred from the claim text.