Adjustable variable ring for electrical junction boxes

• US 7,935,886 B2
• Filed: 02/11/2009
• Issued: 05/03/2011
• Est. Priority Date: 10/07/2008
• Status: Active Grant

• Current Assignee: Orbit Industries Incorporated
• Original Assignee: Orbit Industries Incorporated
• Inventors: Jafari, Afshin
• Primary Examiner(s): PATEL, DHIRUBHAI R
• Application Number:
  US12/369,612
• Publication Number:
  US 20100084155A1
• Time in Patent Office: 811 Days
• Field of Search: 174/50, 174/53, 174/57, 174/58, 174/66, 174/67, 174/480, 174/481, 220/3.2, 220/3.3, 220/3.94, 220/4.02, 220/3.7, 220/3.9, 248/96, 248/343, 248/906, 439/535, D83/53, D13/173, D13/187
• US Class Current: 174/58
• CPC Class Codes: H02G 3/123 in thin walls

Abstract

An adjustable variable ring for electrical junction boxes including a base frame having a guide tab; a sliding insert having a box shaped frame, the sliding insert being configured to slide in and out of the base frame. A ratchet mechanism having a ratchet plate on the base frame including a plurality of steps, and a ratchet spring installed on an inner wall of the box shaped frame including an angled end tab and an angled mid tab protruding from the box shaped frame for engaging one or more of the plurality of steps. The sliding insert is configured to slide in and out of the base frame by disengaging the mid tab from the one or more of the steps by pressing on the end tab, and locks in the base frame by engaging the mid tab with the one or more of the steps.

Claims

1. An adjustable variable ring for electrical junction boxes comprising:

a base frame having a guide tab;

a sliding insert having a box shaped frame, a through opening, and a tab opening on a side of the box shaped frame, the sliding insert being configured to slide in and out of the base frame in the through opening using the guide tab; and

a ratchet mechanism having;

a ratchet plate secured to the base frame by an inner surface of the ratchet plate, and including a plurality of steps on an outer surface, and

a ratchet spring installed on an inner wall of the box shaped frame and having a first end and a second end, the ratchet spring including an angled end tab at the first end, an angled mid tab between the first end and the second end and protruding from an inner wall of the box shaped frame to an outside of the box shaped frame through the tab opening for engaging one or more of the plurality of steps,

wherein the sliding insert is configured to slide in and out of the base frame by disengaging the mid tab from the one or more of the steps by pressing on the end tab, and locks in the base frame by engaging the mid tab with the one or more of the plurality of steps.

2. The adjustable variable ring of claim 1, further comprising a second ratchet mechanism installed opposite to the ratchet mechanism, wherein the sliding insert is configured to slide in and out of the base frame by disengaging the mid tabs of the ratchet mechanism and the second ratchet mechanism from the one or more of the steps by pushing the end tabs of the ratchet mechanism and the second ratchet mechanism towards on another.

3. An electrical junction box comprising said adjustable variable ring according to claim 2.

4. The adjustable variable ring of claim 1, wherein the box shaped frame and the through opening are rectangular shaped.

5. An electrical junction box comprising said adjustable variable ring according to claim 4.

6. The adjustable variable ring of claim 1, wherein the box shaped frame and the through opening are circular shaped.

7. An electrical junction box comprising said adjustable variable ring according to claim 6.

8. The adjustable variable ring of claim 1, wherein the base frame includes a support tab for installing the ratchet plate.

9. The adjustable variable ring of claim 8, wherein the ratchet in installed on the support tab by one of the group consisting of riveting, pinning and welding.

10. An electrical junction box comprising said adjustable variable ring according to claim 9.

11. An electrical junction box comprising said adjustable variable ring according to claim 8.

12. The adjustable variable ring of claim 1, wherein the box shaped frame includes a rib on said side of the box shaped frame and the ratchet spring includes a first cutout at the second end for attachment to the rib.

13. The adjustable variable ring of claim 1, wherein the ratchet spring is installed on said inner wall of the box shaped frame by being snapped on, welded, riveted, or stamp joined on the box shaped frame.

14. The adjustable variable ring of claim 1, wherein the ratchet spring includes a second opening at the first end for finger grip.

15. The adjustable variable ring of claim 1, wherein the ratchet spring is made of electrically conductive spring metal material.

16. The adjustable variable ring of claim 1, wherein the plurality of steps on the outer surface of the ratchet plate are holes, bosses, or notches.

17. The adjustable variable ring of claim 1, wherein the angled end tab has an angle of approximately 90 degrees with respect to the ratchet spring.

18. The adjustable variable ring of claim 1, wherein the angled mid tab has an angle of approximately 30 degrees with respect to the ratchet spring.

19. The adjustable variable ring of claim 1, wherein the ratchet plate and the ratchet spring are located on two side planes, top and bottom planes, or two planes on opposite corners of the base frame and the sliding insert.

20. An electrical junction box comprising said adjustable variable ring according to claim 1.