초록 ▼

An explosion proof electrical enclosure has a relieved joining flange at the junction between the cover and the body of the enclosure. The relieved portion provides an area reducing the bolt load in the event the enclosure is subjected to an internal explosion. As a result, fewer bolts may be used t

An explosion proof electrical enclosure has a relieved joining flange at the junction between the cover and the body of the enclosure. The relieved portion provides an area reducing the bolt load in the event the enclosure is subjected to an internal explosion. As a result, fewer bolts may be used to join the enclosure, reducing the cost of the enclosure, increasing the convenience of access to the enclosure and reducing the labor required to remove or install the cover. The cover of the enclosure has increased stiffening structure at the corners so that the bolts in the corners of the enclosure may be eliminated.

대표청구항 ▼

An electrical enclosure having a vessel and a cover for the vessel, the cover being joined in an explosion containing relationship with the vessel, the enclosure having fastening means joining the cover to the vessel and means to reduce the number of fasteners required to hold the cover in an explos

An electrical enclosure having a vessel and a cover for the vessel, the cover being joined in an explosion containing relationship with the vessel, the enclosure having fastening means joining the cover to the vessel and means to reduce the number of fasteners required to hold the cover in an explosion containing relationship with the vessel, including flanges joining the vessel and the cover, the cover having a corner and having means to increase the stiffness of the cover at the corner, including a projection of increased thickness in the flange area of the cover extending from a central area of the cover into the flange at the corner of the cover, the means being effective to at least partially eliminate the requirement for fasteners at the corner.