US 20090211170 A1
An inground marker for a subterranean object, such as a septic tank, includes an imitation paving stone molded from a plastic material in the general shape of an inverted rectangular pan having a substantially planar top surface. The top surface has a recessed area or depression in which an insert bearing a message indicating the presence of a subterranean object is secured.
1. An inground marker comprising:
an imitation paving stone, said imitation paving stone having a substantially planar top surface and sides depending from said substantially planar top surface, said substantially planar top surface further having a depression therein; and
an insert, said insert bearing a message indicating the presence of a subterranean object below, said insert being secured within said depression on said substantially planar top surface.
2. An inground marker as claimed in
3. An inground marker as claimed in
4. An inground marker as claimed in
5. An inground marker as claimed in
6. An inground marker as claimed in
7. An inground marker as claimed in
8. An inground marker as claimed in
9. An inground marker as claimed in
10. An inground marker as claimed in
1. Field of the Invention
The present invention relates broadly to septic tanks and more particularly to the identification of the subsurface location of a septic tank. Specifically, the present invention relates to an inground marker denoting the subsurface location of a septic tank.
2. Description of the Prior Art
Those living in suburban and rural areas are well acquainted with septic tanks. In general, such tanks are located underground somewhere on the property of a homeowner. Effluent from the home is conducted by underground pipes to the septic tank, where at least a portion remains for periodic removal by a septic tank service company.
Access to the septic tank is typically gained by removing a cover of steel or reinforced concrete resembling a manhole cover in a city street. When servicing is required, the cover is removed and the contents of the tank pumped to a waiting truck for disposal.
Many homeowners object to the appearance of such a cover in the middle of one of their nicely manicured lawns, and resort to covering them with soil and planting grass to blend the location into the lawn as a whole. While improving the aesthetic appearance of the lawn, this expedient, in time, may make it difficult to recall the precise location of the septic tank.
The present invention provides a solution to this problem by permitting the subsurface location of a septic tank to be marked in an unobtrusive and inconspicuous manner.
Accordingly, the present invention is an inground marker which comprises an imitation paving stone and an insert.
The imitation paving stone has a substantially planar top surface and sides depending therefrom. The imitation paving stone also has a recessed area or depression in the substantially planar top surface.
The insert is secured within the depression and bears a message indicating the presence of a subterranean object, such as a septic tank, below.
The present invention will be described in more complete detail with frequent reference being made to the following figures.
Turning now to these figures,
The imitation paving stone 10 has sloping sides 16 and a circumferential rim 18 extending outwardly from the sides 16.
Imitation paving stone 10 may be vacuum formed or injection molded from a plastic material, such as high-density polyethylene (HDPE). The plastic material may include ultraviolet inhibitors, namely, agents which retard the breakdown of plastic material often occurring upon prolonged exposure to ultraviolet (UV) light. Imitation paving stone 10 may be in the form of a 7.0 inch by 7.0 inch square overall in a plane including rim 18 and have a height of 2.2 inches measured relative to the plane including rim 18, although other sizes may be used. The thickness of the walls, that is, top surface 12, depression 14, sloping seals 16, and rim 18, making up the imitation paving stone 10 may be 0.090 inches. Finally, the plastic material may be grey, brown or any other color suitable for an imitation paving stone.
A disc insert 20 which is secured within depression 14 is shown in a plan view in
After cleaning, the discs or plates are placed upon an anvil nest and an abrasive pad, scotchbrite, or emery cloth is rotated upon the face, to give a prism-spin appearance that diffusely reflects light and gives them a high-quality appearance. At the same time, this operation applies a fine, uniform circular scratch to the surface and background of the disc or plate which improves the adhesion of any paint which may be applied thereon. Alternatively, the discs or plates may be sandblasted to provide them with roughened surfaces for the same reasons.
Optionally, a baking enamel containing ultraviolet inhibitors may be spray-painted onto the surface and, of the disc or plate while still wet, it is placed upon a conveyor belt that transports it under a series of rollers having a solvent-absorbing paper to remove the wet paint from the raised portions of the embossed surface (shown white in
The disc insert 20 is embossed with an appropriate message 22 in raised copy, such as “SEPTIC TANK BELOW”, as shown in
The disc insert 20 is secured within depression 14 of imitation paving stone 10 with an adhesive 36, which may be dispensed into depression 14 so that disc insert 20 may be pressed thereinto to complete the attachment. Alternatively, the disc insert 20 may be bolted or otherwise mechanically attached within depression 14 of imitation paving stone 10.
It is important to note that, prior to installation, the septic tank marker 30 is inverted and filled with soil 32 up to the level of the rim 18. Then, it is quickly turned over and placed into position on or over the septic tank cover 34. The soil 32 within the septic tank marker 30 ensures that the marker will not collapse when stepped upon. It is also important to observe that rim 18, which extends about the entire perimeter of the imitation paving stone 10, allows soil 32 to hold the septic tank marker 30 down in position after the rim 18 is covered with soil 32.
Modifications to the above would be obvious to those of ordinary skill in the art, but would not bring the invention so modified beyond the scope of the appended claims.