238000006011 modification reaction Methods 0.000 description 2.238000009429 electrical wiring Methods 0.000 description 2.229910000831 Steel Inorganic materials 0.000 description 2.
Google Patents Adjustable variable ring for electrical junction boxesÄownload PDF Info Publication number US7935886B2 US7935886B2 US12/369,612 US36961209A US7935886B2 US 7935886 B2 US7935886 B2 US 7935886B2 US 36961209 A US36961209 A US 36961209A US 7935886 B2 US7935886 B2 US 7935886B2 Authority US United States Prior art keywords ratchet adjustable variable variable ring tab base frame Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US7935886B2 - Adjustable variable ring for electrical junction boxes US7935886B2 - Adjustable variable ring for electrical junction boxes