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US 4,064,902 AGranted
Curb box
AssigneeNone recorded
InventorJohn Gordon Swenson
Life of this patent
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AssigneeNone recorded
InventorJohn Gordon Swenson
Estimating the term…
A curb box having a cast base housing slidably receiving a threaded pipe which is distorted to oval shape above the threaded end and a riser having a threaded upper end and outwardly-extending ears in the lower end non-rotatably received in the oval part of the threaded upper part of the threaded pipe whereby the riser pipe can be telescopically moved vertically and have a threaded cap supported on the upper end thereof. Curb boxes of the type of the present invention have notably been made with base housing and the pipe extending upwardly therefrom cast in one piece and a riser pipe slidably received in the one-piece base. Applicant has discovered that by threading the base housing and connecting a threaded pipe to it and distorting the threaded pipe to oval shape so that a vertically-extending pipe can be slidably but non-rotatably received therein, the said curb box can be made much simpler and at lower cost.
A curb box saddle comprising,
Dependencies are inferred from the claim text.
Drawings are temporarily unavailable. Open the PDF at USPTO
Hydrants; Arrangements of valves therein; Keys for hydrants: underground hydrants
Methods or installations for drawing-off water: hydrants; Arrangements of valves therein; Keys for hydrants
Construction of housing ; Use of materials therefor: of hydrants
Valve and meter wells: telescopic well casing
Term ended 27 Dec 1994 (estimated)
USPTO file history isn’t available for this patent, so only indexed dates are shown.
A curb box of the general type disclosed herein is shown in U.S. Pat. No. 3,537,471.
It is an object of the invention to provide an improved curb box.
Another object of the invention is to provide a curb box that is simple in construction, economical to use and simple and efficient to use.
FIG. 1 is a side view of the curb box according to the invention.
FIG. 2 is a cross-sectional view taken on line 2--2 of FIG. 1.
FIG. 3 is a cross-sectional view taken on line 3--3 of FIG. 2.
Now, with more particular reference to the drawings, the curb box saddle 10 is shown supported over a valve 19 on a water main 20. The base housing 11 is made of unitary construction and it has a saddle portion that may receive the pipe at the two sides of the valve. The base housing has an open bottom 22 and a recess defining a saddle part 23 that receives the pipe and rests on top of the sides of the valve 19.
The base housing 11 is in the form of a hollow cylinder having an open bottom and a threaded opening 12 at its upper end. Threaded opening 12 receives the threaded lower end of the pipe 13. Pipe 13 is distorted to oval shape at its intermediate portion 17 so that the ears 18 of the stand pipe 16 are slidably and non-rotatably received in the oval-shaped portion.
The cap 14 is adapted to rest on the upper end of the pipe 13 at ground level. Cap 14 has a downwardly extending flange 15 and a first stand pipe 16 is slidably received in the cap 14. The opening 24 defined by the flange 25 is sufficiently large to receive the major diameter of the oval-shaped portion 17 of the pipe. The opening 30 in cap 14 is round and of substantially the same diameter as the outside diameter of the stand pipe 16.