Foldable electrical box

• US 5,480,053 A
• Filed: 03/31/1995
• Issued: 01/02/1996
• Est. Priority Date: 11/15/1993
• Status: Expired due to Fees

• Current Assignee: Hubbell, Inc.
• Original Assignee: Hubbell, Inc.
• Inventors: Jorgensen, Robert W.
• Primary Examiner(s): Pollard, Steven M.
• Application Number:
  US08/415,579
• Time in Patent Office: 277 Days
• Field of Search: 220/62, 220/3.2, 220/3.9, 220/3.94, 220/3.3, 220/3.6, 220/692
• US Class Current: 220/62
• CPC Class Codes: H02G 3/081 Bases, casings or covers
• CPC Class Codes: H02G 3/10 for surface mounting on a wall
• CPC Class Codes: H02G 3/126 with supporting means for mounting on a single wall stud

Abstract

A folded electrical box for mounting an electrical wiring device to a support member. Preferably, the electrical box is formed by folding a unitary blank of thin sheet material. In the preferred embodiment, the electrical box includes an integral mounting bracket. The mounting bracket has a pair of bracket portions extending outwardly from one side wall of the electrical box for coupling the electrical box to a support member. Each of the bracket portions has side mounting section extending from the electrical box for engaging one side of the support member extending perpendicular to the dry wall plaster and a face mounting section extending substantially perpendicularly from the side mounting section for engaging the side of the support member with the dry wall plaster secured thereto. The side mounting section of the mounting bracket is reinforced by folding the sheet material to double its thickness, while the face mounting section has a single thickness to avoid bulging the dry wall plaster. In another embodiment, the mounting bracket is replaced by a pair of fasteners or nails which extend through the electrical box to add rigidity and to prevent unfolding of the box.

Claims

1. An electrical box assembly formed by folding a thin, unitary blank of sheet material, comprising:

an electrical box including

a first substantially planar panel,

a second substantially planar panel coupled to said first panel by a first fold line and extending substantially perpendicular to said first panel,

a third substantially planar panel coupled to said first panel by a second fold line and extending substantially perpendicular to said first panel,

a fourth substantially planar panel coupled to said first panel by a third fold line and extending substantially perpendicular to said first panel, and

a fifth substantially planar panel coupled to said first panel by a fourth fold line and extending substantially perpendicular to said first panel, and

a mounting bracket including

a first bracket portion folded to form a first section extending outwardly from a first end of said second panel at an obtuse angle and a second section extending from said first section for offset mounting of said electrical box to a support member,

a first reinforcing panel coupled to said first bracket portion by a fifth fold line to overlie a part of said first and second sections of said first bracket portion for reinforcing and supporting said first bracket,

a second bracket portion folded to form a first section extending outwardly from a second end of said second panel at an obtuse angle and a second section extending from said first section of said second bracket portion for offset mounting of said electrical box to the support member, and

a second reinforcing panel coupled to said second bracket portion by a sixth fold line to overlie a part of said first and second sections of said second bracket portion for reinforcing and supporting said second bracket.

2. An electrical box assembly according to claim 1, further comprising

a first face mounting section coupled to said first bracket portion by a seventh fold line and extending substantially perpendicular to said first bracket portion.

3. An electrical box assembly according to claim 2, further comprising

a second face mounting section coupled to said second bracket portion by an eighth fold line and extending substantially perpendicular to said second bracket portion.

4. An electrical box assembly according to claim 3, further comprising

a third reinforcing panel coupled to said first bracket portion by a ninth fold line to overlie a part of said first bracket portion;

and

a fourth reinforcing panel coupled to said second bracket portion by a tenth fold line to overlie a part of said second bracket portion.

5. An electrical box assembly according to claim 4, wherein

said fifth fold line is substantially parallel to said ninth fold line, and said sixth fold line is substantially parallel to said tenth fold line.

6. An electrical box assembly according to claim 1, further comprising

a first mounting flange with a first electrical wiring device mounting hole formed therein, said first mounting flange being coupled to said fourth panel by a seventh fold line extending substantially parallel to said third fold line and extending substantially perpendicular to said fourth panel, said first mounting flange having one end positioned adjacent said second panel for engaging said second panel and its other end positioned adjacent said third panel for engaging said third panel to limit inward movement of said second and third panels when a compressive force is applied to said second and third panels of said electrical box;

a second mounting flange with a second electrical wiring device mounting hole formed therein, said second mounting flange being coupled to said fifth panel by an eighth fold line extending substantially parallel to said fourth fold line and extending substantially perpendicular to said fifth panel, said second mounting flange having one end positioned adjacent said second panel for engaging said second panel and its other end positioned adjacent said third panel for engaging said third panel to limit inward movement of said second and third panels when a compressive force is applied to said second and third panels of said electrical box.

7. An electrical box assembly according to claim 1, wherein

each of said fourth and fifth panels includes a first flap coupled thereto and extending substantially perpendicular thereto for overlying a portion of said second panel.

8. An electrical box assembly according to claim 7, wherein

each of said fourth and fifth panels includes a second flap coupled thereto and extending substantially perpendicular thereto for overlying a portion of said third panel.

9. An electrical box assembly according to claim 8, wherein

each of said fourth and fifth panels includes a mounting flange coupled thereto and extending substantially perpendicular thereto.

10. An electrical box assembly according to claim 9, wherein

at least one of said mounting flanges includes a mounting portion lying in a first plane and a grounding portion lying in a second plane space from said first plane and parallel to said first plane.

11. An electrical box assembly according to claim 1, further comprising

a third reinforcing panel coupled to said first bracket portion by a seventh fold line to overlie a part of said first bracket portion;

and

a fourth reinforcing panel coupled to said second bracket portion by an eighth fold line to overlie a part of said second bracket portion.

12. An electrical box assembly according to claim 11, wherein

said fifth fold line is substantially parallel to said seventh fold line, and said sixth fold line is substantially parallel to said eighth fold line.

13. An electrical box assembly according to claim 12, further comprising

a first mounting flange with a first electrical wiring device mounting hole formed therein, said first mounting flange being coupled to said fourth panel by a ninth fold line extending substantially parallel to said third fold line and extending substantially perpendicular to said fourth panel, said first mounting flange having one end positioned adjacent said second panel for engaging said second panel and its other end positioned adjacent said third panel for engaging said third panel to limit inward movement of said second and third panels when a compressive force is applied to said second and third panels of said electrical box;

a second mounting flange with a second electrical wiring device mounting hole formed therein, said second mounting flange being coupled to said fifth panel by a tenth fold line extending substantially parallel to said fourth fold line and extending substantially perpendicular to said fifth panel, said second mounting flange having one end positioned adjacent said second panel for engaging said second panel and its other end positioned adjacent said third panel for engaging said third panel to limit inward movement of said second and third panels when a compressive force is applied to said second and third panels of said electrical box.

14. An electrical box assembly according to claim 13, further comprising

a first face mounting section coupled to said first bracket portion by an eleventh fold line and extending substantially perpendicular to said first bracket portion.

15. An electrical box assembly according to claim 14, further comprising

a second face mounting section coupled to said second bracket portion by a twelfth fold line and extending substantially perpendicular to said second bracket portion.

16. An electrical box formed by folding a thin, unitary blank of sheet material, comprising:

a substantially planar rear panel;

a first substantially planar side panel coupled to said rear panel by a first fold line and extending substantially perpendicular to said rear panel;

a second substantially planar side panel coupled to said rear panel by a second fold line and extending substantially perpendicular to said rear panel;

a first substantially planar end panel coupled to said rear panel by a third fold line and extending substantially perpendicular to said rear panel;

a second substantially planar end panel coupled to said rear panel by a fourth fold line and extending substantially perpendicular to said rear panel;

a first mounting flange with a first electrical wiring device mounting hole formed therein, said first mounting flange being coupled to said first end panel by a fifth fold extending substantially parallel to said third fold line and extending substantially perpendicular to said first end panel, said first mounting flange having one end positioned adjacent said first side panel for engaging said first side panel and its other end positioned adjacent said second side panel for engaging said second side panel to limit inward movement of said first and second side panels when a compressive force is applied to said first and second side panels of said electrical box;

a second mounting flange with a second electrical wiring device mounting hole formed therein, said second mounting flange being coupled to said second end panel by a sixth fold line extending substantially parallel to said fourth fold line and extending substantially perpendicular to said second end panel, said second mounting flange having one end positioned adjacent said first side panel for engaging said first side panel and its other end positioned adjacent said second side panel for engaging said second side panel to limit inward movement of said first and second side panels when a compressive force is applied to said first and second side panels of said electrical box;

a first pair of coupling flaps coupled to opposite edges of said first end panel by a seventh and eighth fold lines, respectively, so that said one of said first coupling flaps overlies a portion of said first side panel and the other of said first coupling flaps overlies a portion of said second side panel to prevent outward movement of said side panels; and

a second pair of coupling flaps coupled to opposite edges of said second end panel by ninth and tenth fold lines, respectively, so that said one of said second pair of coupling flaps overlies a portion of said first side panel and the other of said second pair of coupling flaps overlies a portion of said second side panel to prevent outward movement of said first and second side panels,

said first side panel further including a first bracket portion extending therefrom in a first direction with a first face mounting section coupled to said first bracket portion by a fold line for extending substantially perpendicular to said first bracket portion, and a second bracket portion extending therefrom in a second direction substantially opposite to said first direction with a second face mounting section coupled to said second bracket portion by a fold line for extending substantially perpendicular to said second bracket portion, each of said first and second bracket portions further having a first portion extended outwardly from said first panel at an obtuse angle and a second portion extending parallel to said first panels, said first and second bracket portions being coupled to said first side panel by a pair of fold lines.