| 摘要 |
An arc blast vent (13) for an electrical equipment enclosure has a plate (30) forming a part of the enclosure with triangular cutouts (35) arranged within a regular polygonal area of the plate (30) and having a frame (37) of the plate material in between them. Substantially identical triangle shaped flaps (29), each having hold downs (31) along and adjacent to a first leg (33) of the triangle for attachment to the plate (30), and in from the first leg (33) have a line of perforations (39) through the triangle forming a weakened area for a deformable hinge. Each of the triangle shaped metal flaps (29) have the second and third legs (41, 43) with their edges resting without tenacious engagement on the frame (37) of the plate material. |
