US 5,293,003 AGranted

Electrical box extender

OwnerMarshall J. Prairie, Jr.inventor

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Abstract

A box extender has movable gates for providing a first set of threaded holes for attaching a receptacle or other electrical device to the extender when the movable gates are in a "closed" position, and for swinging to an "open" position to facilitate access to a second set of holes for attaching the extender to an electrical box. The movable gates are in the form of flat plates that extend nearly all the way across the housing when they are in the closed position. The housing of the extender provides a device for defeatable retaining the movable gates in the closed position.

Claims18

Dependent claims

An electrical box extender comprising:

A) a housing including first and second pairs of opposing side walls, an open front, an open back, and a first set of mounting holes disposed near the back;
B) first and second movable gates, each in the form of an elongated plate having a first end and a second, free end, said movable gates having a second set of mounting holes for mounting an electrical device, each said gate having one of said holes of said second set disposed intermediate said first and second ends;
said movable gates being secured to said housing at said first ends for pivotal movement between a closed position at which both said first and second ends of said movable gates are disposed adjacent said first pair of housing side walls, and an open position at which said second, free ends of said movable gates are disposed in spaced relation to said housing side walls;
and
C) said housing including (i) first and second gate support members integral with said walls of said housing for supporting said free ends of said gates when said gates are in said closed position, and (ii) means for retaining said movable gates in said closed position comprising said gate support members and first and second gate retaining members, each said gate retaining member being located in spaced relation to and nearer the open front than a corresponding one of said gate support members such that each said gate retaining member and said corresponding gate support member cooperate to capture therebetween said free end of an associated one of said movable gates when said associated movable gate is disposed in said closed position, said support and retaining members and said movable gates being configured such that movement of said movable gates from said open position into said closed position requires flexure of said movable gates, and such that restoring forces due to said flexure retain said movable gates in said closed position.

2 more elements

A box extender comprising:

A) frame-like housing having walls defining a generally rectangular shape with an open front and open back, and having, near the back, a plurality of fastening holes used for mounting the housing to an electrical box, and, near the front, a plurality of gate support members, and a plurality of gate retaining members;
and
B) a plurality of movable gates, each in the form of an elongated plate having a first end, a second, free end, and a mounting hole intermediate said first and second ends;
said movable gates being secured to said housing at said first ends for pivotal movement along a common plane between a closed position at which said movable gates are disposed adjacent said housing side walls, and an open position at which said free ends of said movable gates are disposed in spaced relation to said housing side walls;
said movable gates being supported at both said ends by said gate support members and being not supported intermediate said ends, and extending nearly substantially across the housing;
C) wherein, in the closed position, the free ends of the movable gates are disposed in transverse spaces, each transverse space being bounded underneath by one of the gate support members, above by a corresponding one of the gate retaining members, and on one side by one of the side walls of the housing;
and
D) wherein each said gate retaining member and said corresponding gate support member cooperate to capture therebetween said free end of an associated one of said movable gates to prevent said associated movable gate from accidentally moving from said closed position, said support and retaining members and said movable gates being configured such that movement of said movable gates from said open position into said closed position requires flexure of said movable gates, and such that restoring forces due to said flexure retain said movable gates in said closed position.

5 more elements

A method of attaching a box extender to an electrical box and an electrical device to said box extender, said box extender comprising a housing having walls defining a generally rectangular shape with an open front and open back, and having, near the back, a plurality of fastening holes used for mounting the housing to said electrical box, and, near the front, a plurality of gate support and retaining members secured to the walls thereof;

and first and second movable gates, each in the form of an elongated plate having a first end, a second, free end, and a mounting hole intermediate said first and second ends;
said movable gates being secured to said housing at attachment points proximate said first ends for pivotal movement along a common plane between a closed position at which said movable gates are disposed adjacent said housing side walls for mounting said electrical device to said mounting holes, and an open position at which said free ends of said movable gates are disposed in spaced relation to said housing side walls for providing access to said fastening holes;
said method comprising:
A) attaching said box extender to said electrical box using said fastening holes while said movable gates are in said open position;
B) moving said movable gates to said closed position, including the steps of flexing said movable gates so that said free ends thereof move over said gate support members and then under a gate retaining member, and, after said flexing step, ceasing the flexing of said movable gates such that restoring forces resulting therefrom cause said movable gates to be retained between said retaining and support members, said support members being disposed adjacent said first and second ends and not intermediate said ends;
and
C) after said moving step, attaching said electrical device to said box extender using said mounting holes in said movable gates.

4 more elements

Dependencies are inferred from the claim text.

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Abstract

An electrical box extender comprising:

A) a housing including first and second pairs of opposing side walls, an open front, an open back, and a first set of mounting holes disposed near the back;
B) first and second movable gates, each in the form of an elongated plate having a first end and a second, free end, said movable gates having a second set of mounting holes for mounting an electrical device, each said gate having one of said holes of said second set disposed intermediate said first and second ends;
said movable gates being secured to said housing at said first ends for pivotal movement between a closed position at which both said first and second ends of said movable gates are disposed adjacent said first pair of housing side walls, and an open position at which said second, free ends of said movable gates are disposed in spaced relation to said housing side walls;
and
C) said housing including (i) first and second gate support members integral with said walls of said housing for supporting said free ends of said gates when said gates are in said closed position, and (ii) means for retaining said movable gates in said closed position comprising said gate support members and first and second gate retaining members, each said gate retaining member being located in spaced relation to and nearer the open front than a corresponding one of said gate support members such that each said gate retaining member and said corresponding gate support member cooperate to capture therebetween said free end of an associated one of said movable gates when said associated movable gate is disposed in said closed position, said support and retaining members and said movable gates being configured such that movement of said movable gates from said open position into said closed position requires flexure of said movable gates, and such that restoring forces due to said flexure retain said movable gates in said closed position.

2 more elements