Explosion-proof pressure-tight housing for electrical operating devices
AssigneeSiemens Aktiengesellschaft
InventorsChristian Haag, Ralf Huck
Life of this patent
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Abstract
An explosion-proof pressure-tight housing for electrical operating device has a rigid lower shell and an elastic upper shell terminating the lower shell in the manner of a cover, wherein the lower shell includes a base, preferably formed as a rounded rectangle, and also includes side walls, the outer surfaces of which are inclined inwardly by an acute angle, where the elastic upper shell has a cover base and side walls, which are splayed outwardly at the angle, the inside width of the upper shell is smaller than the outside width of the lower shell, and the upper shell is pressed with the lower shell such that a flameproof gap is formed between the side walls of the upper shell and the side walls of the lower shell.
Claims9
An explosion-proof pressure-tight housing for electrical operating device, comprising:
- a rigid lower shell having a base and side walls, outer surfaces of which being inclined inwardly by an acute angle of between 1.5° and 4°;
- and
- an elastic upper shell terminating the lower shell in the manner of a cover, the elastic upper shell having a cover base and side walls which are splayed outwardly by the angle, and inside width of the elastic upper shell being smaller than an outside width of the rigid lower shell;
- wherein the elastic upper shell is pressed together with the rigid lower shell such that a flameproof gap is formed between the side walls of the elastic upper shell and the side walls of the rigid lower shell;
- and
- wherein the upper shell comprises a circumferential overhang which is configured to be circumferentially folded over the base of the rigid lower shell.
Dependencies are inferred from the claim text.