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AssigneeR. Stahl Schaltgeräte GmbH
InventorsElena Kondrus, Bernd Limbacher, Jürgen Schmitt, Helmut Würz
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A protective housing in explosion-protection-type pressure-proof encapsulation. At least one device for reducing explosive pressure is associated with the housing. The housing includes a first housing part having a first sealing surface and a second housing part having a second sealing surface, wherein, when the housing is in the closed pressure-proof state, a resilient seal is held between the first sealing surface and the second sealing surface so as to be elastically deformed, and, as a result, closes the space between the first sealing surface and the second sealing surface in a flame-proof manner in the event of an explosion inside the housing. The flame-proof arrangement can replace a planar gap between, for example, a surface of a cover and a surface of a housing part, which gap requires conformity to relatively narrow manufacturing tolerances.
A protective housing in an explosion protection category of flameproof enclosures, wherein a device for reduction of explosion pressure is assigned to the protective housing, wherein the protective housing comprises a first housing part having a first sealing surface and a second housing part having a second sealing surface, wherein an elastical sealing body is held elastically deformed between the first sealing surface and the second sealing surface in a flameproof closed condition of the protective housing and a space between the first sealing surface and the second sealing surface is closed in a flameproof manner in case of an explosion in the interior of the protective housing, wherein the elastical sealing body when elastically deformed is free of through passages and the second housing part comprises an additional second sealing surface and the protective housing comprises a third housing part having a third sealing surface, wherein an additional elastical sealing body is held elastically deformed between the additional second sealing surface and the third sealing surface in a flameproof closed condition of the protective housing and thus closes a space between the additional second sealing surface and the third sealing surface in case of an explosion in the interior of the protective housing in a flameproof manner.
Dependencies are inferred from the claim text.