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Subgrade vault
| Details |
Inventors: Dang, Nguyen Thai; Flynn, Reilly;
Assignee: Carson Industries LLC (Glendora, CA)
Primary Examiner: Cuomo; Peter M.
Assistant Examiner: D'Adamo; Stephen
Attorney, Agent or Firm: Mon; Donald D.
A subgrade vault to provide an enclosed housing for utility connections. The housing is made of a moldable material with a reinforcing skirt at one end and a seat in the other. A lid is received in the seat to close its upper end. A clip is optionally provided for fastening the lid to the housing body that can be clipped on the body and engaged by a fastener carried by the lid. |
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DETAILED DESCRIPTION OF THE INVENTION As best shown in FIG.
8, a vault 20 according to this invention comprises a body 21, a lid 22, a clip 23 and a fastener 24.
When the lid is brought down onto the body and the fastener is fastened to the clip, the joinder and assembly are exemplified in FIGS.
8 and 9 When the vault is assembled, it forms an enclosed region 25 within which connections (not shown) can be placed and accessed through the top end 30.
Conventionally the conduits, cables, or valves being connected are brought into the region through the open bottom end 31 of the body.
Customarily the body is buried in a surrounding region, such as soil, or abutted by gravel or concrete poured around it to stabilize it in place.
The upper end of the body will be placed where, when the lid is attached, the upper surface of the lid will be at grade.
The peripheral wall 32 of the body is a quadrilateral frustum, sloping upwardly from the bottom end.
If preferred, the bottom end could be the larger end, but structural considerations will prefer the illustrated shape over the reverse, or from a prismatic shape (which could also be used).
Circular vaults are also in the scope of this invention, but quadrilaterals are generally preferred.
The illustrated shape is well-suited to manufacture by injection molding processes, which is an advantage in the reduction of cost.
It is also amenable to rotational molding.
The lower end includes an upwardly extending peripheral skirt 33.
Attention is called to buttresses 34 which are integral with (or attached to) the inside of the skirt and the outside of the peripheral wall.
These provide strong support for the skirt, which in turn provides significant rigidity to the lower end so that side forces are less likely to distort the shape of the body.
A rim 40 is formed at the top end of the body, where a seat 41 is formed by a re-entrant wall 42 that terminates in an inwardly-extending flange 43.
A lip 44 is formed as an inward extension from flange 43, with a hole 45 therethrough for a purpose to be described
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