Triangle flap arc vent

Patent metadata

Field	Value
Publication number	US-9438015-B2
Application number	US-201113308710-A
Country	US
Kind code	B2
Filing date	Dec 1, 2011
Priority date	Dec 1, 2011
Publication date	Sep 6, 2016
Grant date	Sep 6, 2016

Abstract

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

First claim

The invention claimed is:

1. An arc vent for an electrical equipment cabinet, comprising:
a metal plate with four triangular cutouts arranged within a substantially square area of the plate and having a frame of the plate metal in between them;
four isosceles triangle shaped metal flaps, each of said flaps having screw hold downs along and adjacent to a first leg of the triangle for attachment to the top plate, and in from the first leg a line of perforations through the triangle forming a weakened area for a deformable hinge; and
each of the triangle shaped metal flaps having second and third legs with edges resting without tenacious engagement on the frame.

2. The arc vent according to claim 1 wherein the four triangular cutouts are four right triangular cutouts.

3. The arc vent according to claim 2 wherein the right triangular cutouts are isosceles triangles.

4. The arc vent according to claim 3 wherein the right triangular cutouts have a cruciform frame of the top plate metal in between them.

5. The arc vent according to claim 4 wherein the second and third leg edges of the flaps rest on the cruciform frame of the top plate metal.

6. The arc vent according to claim 1 wherein the four isosceles triangle shaped metal flaps are right triangular flaps.

7. The arc vent according to claim 1 wherein the four isosceles triangle shaped metal flaps are identically shaped and dimensioned.

8. An electrical equipment cabinet with an arc vent, comprising:
a top plate, side plates, and bottom plate forming the exterior of the cabinet;
the top plate having four right triangular cutouts arranged within a substantially square area of the top plate and having a cruciform frame of the top plate material in between them;
four substantially identical right angle isosceles triangle bendable flaps with a hypotenuse side, having mechanical hold downs on the hypotenuse side, and in from the hypotenuse side a line of perforations forming a deformable hinge;
each of the right angle leg edges of the flaps resting on the cruciform frame.

9. An electrical equipment cabinet with an arc vent, according to claim 8 , wherein the top plate and flaps are metal.

10. An arc blast vent for an electrical equipment cabinet, comprising:
a metal plate with a plurality of substantially equally shaped cutouts within a regular polygonal area, said cutouts having a frame of the plate metal in between them;
a triangle shaped metal flap covering each cutout, each of said flaps having a hinge and mechanical hold downs along and adjacent to a first leg of the triangle for attachment to the plate; and
each of the triangle shaped metal flaps having second and third legs with edges resting without tenacious engagement on the frame.

11. The arc blast vent for an electrical equipment cabinet according to claim 10 wherein each of said flaps is substantially identical.

Assignees

• Arcos Waldo
• Islas Luis
• Schneider Electric Usa Inc

Inventors

• Arcos Waldo
• Islas Luis

Classifications

• H05K5/00

  Casings, cabinets or drawers for electric apparatus · CPC title

• H02B13/025 Primary

  Safety arrangements, e.g. in case of excessive pressure or fire due to electrical defect · CPC title

• H01H33/08

  Stationary parts for restricting or subdividing the arc, e.g. barrier plate · CPC title