Back to results
US 4,654,470 AGranted
Raintight junction box
AssigneeAMP Incorporated
InventorsSteven Feldman, Marvin H. Jones
Life of this patent
Estimating the term…
Abstract
A raintight electrical junction box is disclosed for use outdoors and includes a base member having a peripheral channel while the cover has a labyrinth profiled to be received in the channel, when the cover is placed over the base member. The mating geometry of the labyrinth and the channel provide a gasketless peripheral seal between the cover and base member.
Claims24
A raintight enclosure comprising:
- a housing means including a cavity and an annular channel extending peripherally around said housing means,
- a cover means for placing over said housing means being cooperatively profiled with said channel to create a gap between an underside of the cover and an upper extremity of an outer wall which forms the channel, said cover means including a labyrinth means extending from the underside of said cover means profiled to be received in said channel means, the labyrinth means and the annular channel cooperatively comprising means for creating a peripheral raintight enclosure when the cover means is placed over the housing means;
- and
- means to allow presure equalization between the cavity interior and an ambient pressure preventing condensation in the cavity during changes in ambient conditions.
1 more element
A junction box comprising:
- a housing means having a lower surface and a first upstanding wall defining an inner cavity therein, a second upstanding wall concentrically arranged outside of said first upstanding wall, an annular floor beween and connecting the first and second walls forming a channel therebetween, the first wall being higher upstanding than said second wall, each said wall having a distal tip;
- a cover means having a central surface, a first flange means extending from the periphery of said central surface, an annular ring extending from said central surface, a second flange means attached to said annular ring extending below and parallel to said first flange means, the cover means being profile to fit over said housing means with the annular ring and second flange means extending into the channel such that the only contacting point between the cover and housing means is at the distal tip of said first upstanding wall, the annular ring, second flange means and channel comprising means for creating a peripheral raintight enclosure when the cover means is placed over the housing means,
- entry means for placing at least one wire into said inner cavity to be terminated therein to a conductor entering through the base of the enclosure.
A raintight enclosure comprising:
- a housing means having a cavity therein and a channel extending peripherally around said enclosure, said channel being defined by inner and outer upstanding walls and a floor therebetween;
- a cover means having a labyrinth means extending from the cover means, the cooperation between the channel and the labyrinth means forming a first capillary, a second capillary, and an expanded capillary disposed between said first and second capillaries, the expanded capillary profiled to act as a capillary break between the first and second capillaries to prevent water droplets entering the first capillary from capillary attraction into the second capillary and into the cavity, said cover means being spaced from a distal tip of said outer upstanding wall.
Dependencies are inferred from the claim text.