The present invention relates to a weatherproof outlet having a gasket for sealing an electrical outlet. More particularly, the invention relates to a weatherproof outlet having a gasket attached to the outer surface of a base plate which forms a seal between the plug and the electrical receptacle and between a cover and the base plate of the assembly.
Conventional electrical outlets for outdoor use include a receptacle mounted in a weatherproof outlet box which is closed by a weatherproof cover. When the receptacle is a duplex outlet, the cover plate can have two openings and two covers or flaps mounted adjacent the openings. The flaps or covers are hinged on the cover plate for movement between open and closed positions relative to the openings and are spring biased towards their closed positions. The openings in the cover plate enable access to the electrical contacts in the receptacle.
Rubber gaskets are commonly positioned between the cover plate and the outlet box and overlying the electrical receptacle. The gasket has an opening larger than the electrical device such that the gasket forms a seal between the outlet box and the cover plate and does not form a seal between the cover plate and the electrical receptacle. These devices typically require a separate gasket or seal for the cover flaps to form a weatherproof seal.
The use of separate seals for cover flaps increases the manufacturing and assembly costs. The separate seals also result in an increase in the possibility of leakage of water and dirt into the outlet box or into the receptacle causing damage and shorting of the electrical, components.
One example of a gasket for covering an electrical outlet box is disclosed in U.S. Pat. No. 4,058,358 to Carlisle. This patent discloses a gasket providing a seal between an outlet box and a cover plate and is positioned between the cover plate and the receptacle. This patent also discloses the gasket having a collar extending between the cover plate and, the cover flap. The gasket forms a seal when the cover flap is closed.
Another electrical box outlet seal is disclosed in U.S. Pat. No. 4,484,021 to Schaefer et al. This patent discloses a seal positioned between a cover plate and an electrical box. The gasket has a dimension to extend through the opening in the cover plate and is pressed through the opening in the cover plate by an electrical receptacle when the cover plate is attached to the electrical receptacle. The gasket is stretched and deformed out of the plane in the gasket to form a peripheral lip which extends through the opening in the cover plate and surrounds the receptacle projecting portion. The resulting lip contacts the cover flap when in the closed position to form a seal.
Other types of weatherproof electrical covers include a base that is attached to the electrical device and a hinged cover connected to the base. The cover has a dimension such that the cover can be completely closed when a plug is inserted into the electrical receptacle. Examples of this type of weatherproof cover are disclosed in U.S. Pat. No. 5,280,135 to Berlin et al, U.S. Pat. No. 6,891,104 to Dinh, U.S. Pat. No. 5,763,831 to Shotey et al. and U.S. Pat. No. 6,642,453 to Shotey et al.
Various other designs of weatherproof outlet covers are known in the art which include a gasket material either on the base which forms a seal with a hinged cover as disclosed in U.S. Pat. No. 4,058,358 to Carlisle or which include a gasket on the hinged cover as disclosed in U.S. Pat. No. 2,867,345 to Bellek and U.S. Pat. No. 2,870,933 to Winter.
These devices are generally suitable for their intended purpose. However, there is a continuing need in the industry for an improved weatherproof cover assembly that is effective and simple to construct.
The present invention is directed to a weatherproof cover assembly to protect an electrical wiring device. The invention is particularly directed to a weatherproof assembly having a gasket to prevent water from entering the electrical wiring device and the electrical enclosure.
Accordingly, an object of the present invention is to provide an improved housing for an electrical wiring device such as an electrical outlet receptacle which includes a gasket to effectively protect the electrical wiring device from damage from the environment.
Another aspect of the invention is to provide a gasket for an electrical outlet formed as a single unitary and continuous member which is able to form a seal between a cover plate and a cover. The gasket also forms a seal between the plugs and the electrical receptacle to prevent water and dirt from entering the openings in the receptacle.
A further aspect of the invention is to provide a weatherproof cover assembly that is economical to manufacture and simple to operate by the user.
A further aspect of the invention is to provide a weatherproof cover assembly having a mounting plate with guides and edges to shed water away from the electrical wiring device while providing effective sealing of the wiring device.
Still another aspect of the present invention is to provide an electrical outlet box with a gasket on an outer surface of the cover plate which is capable of forming a weatherproof seal with the hinged cover when in the closed position and to form a seal with a plug when the plug is connected to the outlet receptacle when the cover is in the opened position.
A further aspect of the invention is to provide a base plate for a cover assembly having a screw hole and a screw received in the screw hole for attaching the base plate to an electrical device and a gasket attached to a top surface of the base plate which captures the screw between the gasket and the base plate. The gasket has a hole overlying the screw with a width sufficient to allow the tip of a screw driver to engage the screw head. The hole in the gasket has a dimension less than the width of the screw head so that the screw is retained in the screw hole.
The foregoing aspects of the present invention are basically obtained by providing an electrical outlet comprising an electrical outlet box for supporting a wiring device, a base plate extending over the wiring device and the outlet box where the base plate has a least one access opening aligned with the wiring device, and a cover coupled to the base plate. The cover is movable between a first open position and a second closed position overlying the at least one access opening in the base plate. The electrical outlet also includes a resilient gasket having a top surface, a bottom surface and a peripheral outer edge and at least one opening aligned with the wiring device. The opening defines a self-sealing opening to access the wiring device. The gasket is attached to the base plate by an adhesive on a bottom surface around a peripheral edge to form a waterproof seal with the top surface of the base plate around the at least one access opening. The gasket has a dimension to form a seal with the cover when the cover is in the closed position.
The various aspects of the invention are also attained by providing a weatherproof outlet assembly comprising an electrical box having an open end and supporting an electrical receptacle, a base plate, a cover, and a resilient gasket. The base plate is coupled to the open end of the electrical box and overlying the electrical receptacle, top face, bottom face and an inner rim surrounding the at least one access opening and extending outwardly from the top face and has a dimension to shed water away from the access opening. The cover is coupled to the base plate and is movable between a first open position and a second closed position overlying the at least one access opening where the cover has a dimension less than a dimension of the inner rim of the base plate. The resilient gasket has a top surface, a bottom surface and a peripheral outer edge and at least one opening aligned with the electrical receptacle. The opening can be in the form of a slit defining a self-sealing opening to access the electrical receptacle. The resilient gasket is attached to the top surface of the base plate by an adhesive on the bottom surface thereof which extends around the peripheral edge. The gasket has an outer dimension complementing the inner dimension of the inner rim on the base plate and forms a waterproof seal around the at least one access opening. The top surface of the gasket forms a seal with the cover when the cover is in the closed position.
The various aspects of the invention are also attained by providing a weatherproof outlet comprising an electrical box having an open end and supporting an electrical receptacle, a base plate, a cover and a resilient gasket. The base plate is coupled to the open end of the electrical box and overlying the electrical receptacle. The base plate has two spaced apart access openings for receiving projections on the electrical receptacle, a top face, a bottom face and a continuous inner rim surrounding the access openings and extending outwardly from the top face. The inner rim has a dimension to shed water away from the access openings. The base plate further includes an outer rim spaced outwardly from the inner rim and has a height greater than the height of the inner rim with a dimension to shed water away from the inner rim. The cover is coupled to the base plate and is movable between a first opened position and a second closed position overlying at least one of the access openings. The cover has a dimension less than a dimension of the inner rim. The resilient gasket has top a surface, bottom surface and a peripheral outer edge and at least one slit aligned with the electrical receptacle. The slit defines a self-sealing opening to access the electrical receptacle. The gasket is attached to the top surface of the base plate by an adhesive on the bottom surface of the gasket and extends around the peripheral edge. The gasket has an outer dimension complementing an inner dimension of the inner rim on the base plate and forms a waterproof seal around the two access openings and forms a seal with the cover when the cover is in the closed position.
Other objects, aspects, advantages and salient features of the present invention will become apparent from the following detailed description which, taken in conjunction with the annexed drawings, discloses one embodiment of the present invention.
Referring to the drawings which form a part of this original disclosure in which:
The present invention is directed to an electrical outlet assembly for outdoor use. In particular, the invention is directed to a weatherproof electrical assembly having a gasket to provide a weatherproof seal to prevent water and dirt from entering the electrical receptacle.
Referring to the drawings, the electrical outlet assembly 10 includes a base plate 12, and a gasket 14 attached to the cover 16. The cover is hinged to base plate 12.
Referring to
In the embodiment shown in
In the embodiment illustrated, base plate 12 has a rectangular configuration corresponding to the shape of electrical box 20. Base plate 12 has a substantially planar configuration with a chamfered outer edge 30 to shed water, a longitudinal top edge 32, a longitudinal bottom edge 34, and side edges 36. Generally, base plate 12 is constructed to form a watertight seal with electrical box 20. An optional gasket can be provided between the base plate and the electrical box as needed.
Referring to
Top face 44 of base plate 12 in the embodiment illustrated includes two spaced apart access openings 54 for receiving the raised projecting portions 24 of the wiring device 18. Base plate 12 preferably has a thickness substantially equal to the height of the raised projecting portions 24 so that the top face 56 of wiring device 18 is substantially in the same plane as top face 54. A screw receiving aperture 58 extends through top face 44 of base plate 12 between access openings 54 for receiving mounting screw 28 to attach cover plate assembly to wiring device 18.
An inner rim 60 extends upwardly from top face 44 of base plate 12 and surrounds access openings 54. In the embodiment illustrated, inner rim 60 has a generally rectangular shape corresponding to the shape of base plate 12 with rounded corners 62. Inner rim 60 is spaced inwardly from the outermost edges of base plate 12 and outwardly from access openings 54. Inner rim 60 has a height sufficient to form a retaining ring for gasket 14 and to shed water away from access openings 54 when in use.
An outer rim 64, which forms a rain barrier or wall, is spaced outwardly from inner rim 60 and extends outwardly from top face 44 of base plate 12 and is substantially parallel to inner rim 60. As shown in
Gasket 14 has a flat planar configuration with a shape and dimension corresponding to the inner dimension of inner rim 60 and is received within the cavity defined by inner rim 60. Gasket 14 has a top surface 74, a bottom surface 76 and an outer edge. Preferably gasket 14 has a thickness greater than the height of inner wall 60 and at least a thickness equal to the height of outer wall 66. Gasket 14 includes a plurality of openings shown in the drawings as slits 78 aligned with the recesses in the wiring device 18. The slits 78 have a dimension to receive the prongs of a plug 80 when the plug is inserted into the wiring device 18. Gasket 14 also includes an aperture 82 for receiving a ground prong of plug 80, and which is aligned with the ground connection 84 in wiring device 18.
A central aperture 86 is aligned with screw 28 and screw aperture 58 in base plate 12. In a preferred embodiment, aperture 86 in gasket 12 has a dimension less than the dimension of a head of screw 28 so that screw 28 is captured between base plate 12 and gasket 14 when gasket 14 is attached to the top surface of base plate 12. Aperture 86 has a dimension that is sufficient to allow the head of a screw driver to extend through gasket 14 to engage the screw head of screw 26 for tightening screw 26.
Preferably, gasket 14 is adhesively attached to base plate 12 to form a watertight seal around the access opening and to prevent the gasket from separating from the base plate. Referring to
As shown in
In the embodiment illustrated, two spaced apart covers 16 are attached to hinge member 38 within the hinge receiving sections 48. A spring is provided to cooperate with hinge member 38 and covers 16 to spring bias covers 16 in a closed position. Covers 16 are independently movable from an open position shown in
Each cover 16 has a body 96 with a hinge pin 98 that is pivotally connected with the hinge receiving section 48 of hinge member 38. Body 96 of cover 16 has a top face 100, an inner rim 102 and an outer rim 104. Inner rim 102 is a continuous unitary member having a bottom edge 106 for contacting gasket 14. Inner rim 102 has a dimension to enclose the slit 78 and aperture 82 in gasket 14 corresponding to the wiring device 18. As shown in
Outer rim 104 of cover 16 surrounds inner rim 102 and is spaced outwardly from inner rim 102. Outer rim 104 has a bottom edge 108 defining a substantially flat surface parallel to bottom edge 106 of inner rim 102.
In use of the electrical outlet assembly 10, screw 28 is initially passed through the screw opening 58 in base plate 12 and then gasket 14 is adhesively attached to the top surface of base plate 12 within the boundary of inner rim 60 as shown in
Gasket 14 is preferably formed from a resilient and compressible rubber material that does not absorb water. Examples of a suitable gasket material can be a butadiene rubber or a closed cell foam rubber such that the gasket material is flexible and compressible without absorbing water. During use, cover 16 is pivoted to an open position and the prongs of plug 80 are passed through the slits 78 of gasket 14 into engagement with the prong receiving apertures of the wiring device as shown in
Referring to
As shown in
While various embodiments have been chosen to illustrate the invention, it will be understood by those skilled in the art that various changes and modifications can be made without departing from the scope of the invention as defined in the appended claims.
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Number | Date | Country | |
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20100000757 A1 | Jan 2010 | US |