초록 ▼

A portable exhaust hood isolates sections of piping for maintenance and repair. It has a transparent front panel to provide a clear viewing shield, which can be adjusted between open and closed positions. The use of a collapsible frame within an enclosure made of flexible material contributes signif

A portable exhaust hood isolates sections of piping for maintenance and repair. It has a transparent front panel to provide a clear viewing shield, which can be adjusted between open and closed positions. The use of a collapsible frame within an enclosure made of flexible material contributes significantly to the convenience and portability of the hood, and its relatively inexpensive construction permits disposal, as need be, without substantial economic detriment.

대표청구항 ▼

A portable exhaust hood for isolating a conduit section for maintenance and repair, including: an enclosure comprised of interconnected top, bottom, front, rear and end walls, at least said front wall being fabricated from a flexible transparent material and having a generally transversely extending

A portable exhaust hood for isolating a conduit section for maintenance and repair, including: an enclosure comprised of interconnected top, bottom, front, rear and end walls, at least said front wall being fabricated from a flexible transparent material and having a generally transversely extending free edge portion adjacent one of said bottom and top walls, said front wall being joined adjacent the other of said top and bottom walls, and being displaceable from a closed position with said edge portion disposed along said one wall, to an at least partially open position spaced therefrom, a hand access and air ingress opening into said enclosure thereby being defined; means for securing said front wall in said open and closed positions; means providing passages from an edge of at least one of said walls for permitting the insertion of a section of an intact conduit into said enclosure for extension therethrough; at least one opening at a point remote from said ingress opening for egress of air from said enclosure; and means for supporting said hood in an operative position about the conduit, said securing means comprising a member extending continuously along the forward edge margins of each of said end walls, permitting securement of said free edge portion at substantially any position along the length of said member to vary the area of said ingress opening comprising a two-part hook and loop-type fastener, one part of said fastener providing said continuously extending members and the other part thereof being disposed on the facing surface of said front wall along the corresponding margins thereof.