Electricity: conductors and insulators – Overhead – Towers – poles or posts
Patent
1975-12-05
1977-08-09
Truhe, J. V.
Electricity: conductors and insulators
Overhead
Towers, poles or posts
52221, H02G 312
Patent
active
040412385
ABSTRACT:
A preset access housing assembly is disclosed for use in underfloor electrical distribution systems having a plurality of raceway cells extending below the floor surface. The housing includes a base wall bridging between two raceway cells and communicating with both cells. A conical member is connected to the base wall around its periphery and converges upwardly with reducing diameter to an open end substantially adjacent to but below the floor surface. Closure means are mounted on the conical member and can be opened to provide user access to the housing. The finished cover means include a finish ring which projects outwardly along the floor surface around the open end of the housing and a flange which extends down through the opening. A cover plate is removably mounted in the finish ring. A bracket is mounted in the housing to support a duplex receptacle and is shaped to isolate a zone within the housing from the remainder of the housing. Such zone is in communication with the cell along which power is supplied to the receptacle. The conical shape provides a continuous curve along the wall of the housing so that adequate strength is provided with relatively thin material. Such conical shape also provides a gradual transition between the diameter at the lower end of the housing and the diameter at the open end to eliminate the existence of weakness resulting from a thin layer of concrete around the housing. During installation a temporary cover closes the opening and is covered with concrete or the like. Such temporary cover is formed with a shallow cup shape so that the concrete over the central portion of the housing is thicker than the concrete around the opening in the conical member.
REFERENCES:
patent: 340433 (1886-04-01), Dorsett
patent: 3701837 (1972-08-01), Fork
patent: 3943272 (1976-03-01), Carroll et al.
Bargar Metal Fabricating Company
Tone D. A.
Truhe J. V.
LandOfFree
Preset housing for electrical distribution systems does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Preset housing for electrical distribution systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preset housing for electrical distribution systems will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1229270