U.S. patent application number 12/266597 was filed with the patent office on 2009-03-12 for universal lid closure for underground landscape boxes.
This patent application is currently assigned to Pentair Filtration, Inc.. Invention is credited to Don Michael Kearby, John Cary Sofyanos, Jimmie Howard Wickham.
Application Number | 20090065519 12/266597 |
Document ID | / |
Family ID | 38262209 |
Filed Date | 2009-03-12 |
United States Patent
Application |
20090065519 |
Kind Code |
A1 |
Kearby; Don Michael ; et
al. |
March 12, 2009 |
Universal Lid Closure for Underground Landscape Boxes
Abstract
A universal lid closure for underground landscape boxes that
universally adapts to all underground landscape box sizes by the
design of flexible flaps Mat extend radially outwardly from their
attachments to the lid body. The flaps are preferably of varying
lengths and widths. A plurality of flexible flaps prevent
accidental lid removal by exerting resilient force at a precise
angle on the underground landscape box wall. A lid top is provided
to enclose all box opening circumferences in each box class, and
the flexible flaps are molded at a precise angle to horizontal to
deter fatigue within the flexible flap.
Inventors: |
Kearby; Don Michael;
(Breckenridge, TX) ; Sofyanos; John Cary;
(Spicewood, TX) ; Wickham; Jimmie Howard; (Irving,
TX) |
Correspondence
Address: |
ANDRUS, SCEALES, STARKE & SAWALL, LLP
100 EAST WISCONSIN AVENUE, SUITE 1100
MILWAUKEE
WI
53202
US
|
Assignee: |
Pentair Filtration, Inc.
Sheboygan
WI
|
Family ID: |
38262209 |
Appl. No.: |
12/266597 |
Filed: |
November 7, 2008 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
11326023 |
Jan 5, 2006 |
|
|
|
12266597 |
|
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Current U.S.
Class: |
220/780 |
Current CPC
Class: |
E02D 29/10 20130101 |
Class at
Publication: |
220/780 |
International
Class: |
B65D 43/00 20060101
B65D043/00 |
Claims
1. A one-piece universal lid closure for underground landscape
boxes of the type having upper circular openings of diameters
varying over a given range and a generally cylindrical inner wall
having an engagement ring defining an annular shoulder at vertical
positions varying over a given range, the lid comprising: a flat
circular body dimensioned to overlie and close the opening; a
plurality of circumferentially spaced flexible flaps formed
integrally with, attached to and extending downwardly from the
underside of the body, the flaps having free edges positioned
radially outwardly from their attachment to the lid body, said free
edges adapted to engage the inner walls of all diameters within the
given range and deflect radially inwardly to provide frictional
engagement therewith, and wherein each of the flaps has a locking
protrusion positioned to positively engage a ring positioned in the
given range.
2. The lid as set forth in claim 1 comprising at least three
flexible flaps.
3. The lid as set forth in claim 1 comprising a plurality of pairs
of circumferentially spaced diametrically opposed flaps.
4. The lid as set forth in claim 3 wherein pairs of diametrically
opposed flaps are identical.
5. The lid as set forth in claim 3 wherein pairs of
circumferentially adjacent flaps are of different lengths.
6. The lid as set forth in claim 4 wherein circumferentially
adjacent flaps are of different widths.
7. The lid as set forth in claim 4 wherein flaps of one
diametrically opposed pair are adapted to engage an engagement ring
disposed on the inner wall in a first vertical position in the
given range and flaps of an adjacent opposed pair are adapted to
engage an engagement ring disposed on the inner wall in a second
vertical position in the given range.
Description
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] This is a continuation of application Ser. No. 11/326,023
filed Jan. 5, 2006.
BACKGROUND OF THE INVENTION
[0002] Underground landscape boxes are used by many industries as a
means of housing components of the particular industry. Underground
landscape boxes are almost used exclusively in landscape but can be
used in a number of other areas such as large concrete areas. The
underground landscape box may house electrical connections,
electric valves, water shutoff valves, and cable TV connections.
These samples are just a few of the many and varied
applications.
[0003] As underground landscape boxes have grown in popular use,
more manufacturers have emerged, each making their box unique as to
size and specification. The uniqueness of each box can be seen in
box diameter. In the class, econo-box, the diameter may vary from
61/4'' all the way to 7''. This difference in diameter means the
corresponding lid closure will vary in its diameter resulting in as
many lid closure sizes as there are manufacturers.
[0004] Over time, as millions of underground landscape boxes have
been installed, the lids are subject to needed replacement from
deterioration, or removal by vandalism or removal by gas powered
equipment. When the end users need to replace missing lids, they
are often forced to dig up the entire underground box body and
replace the box with whatever manufacturd brand their local
wholesaler or retailer might be carrying in any particular
year.
[0005] The wholesaler and retailer arbitrarily change manufacturers
over time due to better pricing, better warranty, or rebate
incentives. As more and more manufacturers have entered into the
same markets, wholesalers and retailers are forced to make
inventory decisions based on replacement market sales. The
decisions are: 1. carry multiple manufactured lines of underground
landscape boxes thereby increasing inventory levels. Or 2. carry
one line of underground landscape boxes and lose replacement sales
to their competitors.
[0006] Prescott U.S. Pat. No. 4,591,290 was issued based on fixing
broken boxes by placing an insertion device inside the underground
box wall. This then allowed a smaller lid to be used on the
box.
[0007] The Prescott patent has two problems with its methodology.
1. It uses an insertion device and then a replacement lid, which
accounts for two parts, and two stock keeping units for the
wholesaler or retailer to inventory. 2. It involves using a smaller
lid, whereas the present application has one lid that will
universally fit all currently manufactured and future manufactured
underground landscape boxes.
[0008] No prior technology makes a replacement lid that can be used
as closure for all manufactured products on the market today or for
future manufactured product.
SUMMARY OF THE INVENTION
[0009] The primary object of the invention is to provide a
universal lid closure for underground landscape boxes.
[0010] Another object of this invention is to provide a lid closure
that universally adapts to all underground landscape boxes by the
design of a flexible flap with a specific width.
[0011] Another object of the invention is to provide a lid closure
that universally adapts to all underground landscape boxes by the
design of a flexible flap with a specific length.
[0012] Another object of the invention is to provide a plurality of
flexible flaps that prevent accidental lid removal by exerting
force at a precise angle on the underground box wall.
[0013] Another object of the present invention is to provide
locking protrusions on the edges of the flexible flaps that engage
the engagement ring to help secure the lid in the closed
position.
[0014] Another object of the invention is to provide a lid top that
is manufactured to enclose all underground landscape box opening
circumferences in each individual box class.
[0015] Another object of this invention is to provide a plurality
of flexible flaps molded at a precise angle to horizontal to deter
fatigue within the flexible flap.
[0016] Another object of this invention is to provide one stock
keeping unit as a means of inventory control.
[0017] Yet another object of this invention is to provide a
replacement solution to prevent unnecessary labor associated with
replacing outdated or no longer manufactured underground landscape
boxes.
[0018] Other objects and advantages of the present invention will
become apparent from the following descriptions, taken in
connection with the accompanying drawings, wherein, by way of
illustration and example, an embodiment of the present invention is
disclosed.
BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The drawings constitute a part of this specification and
include exemplary embodiments of the invention, which may be
embodied in various forms. It is to be understood that in some
instances various aspects of the invention may be shown exaggerated
or enlarged to facilitate an understanding of the invention.
[0020] FIG. 1 is a perspective view of the invention showing the
flexible flaps from the lid underside.
[0021] FIG. 2 is a perspective view of the invention showing the
lid engagement points to one type of underground landscape box.
[0022] FIG. 3 is another perspective view of the invention showing
the lid engagement points to another type of underground landscape
box.
[0023] FIG. 4 is a top plan view of the invention showing the lid
top with the precision cuts for the flexible flaps.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
[0024] Detailed descriptions of the preferred embodiment are
provided herein. It is to be understood, however, that the present
invention may be embodied in various forms. Therefore, specific
details disclosed herein are not to be interpreted as limiting, but
rather as a basis for the claims and as a representative basis for
teaching one skilled in the art to employ the present invention in
virtually any appropriately detailed system, structure or
manner.
[0025] Turning first to FIG. 1 there is shown the underside of the
universal underground landscape box lid 10 illustrating the
flexible flaps 11a and 11b. A plurality of flexible flaps 11a and
11b are provided with said lid 10. The flexible flaps 11a and 11b
are of varying widths and lengths to accommodate and engage varying
box circumferences and engagement rings in varying vertical
positions on the inner walls of the boxes of specific manufactured
underground landscape boxes (see FIGS. 2 and 3). The smaller width
and length flexible flaps 11b are used to engage small
circumference underground landscape boxes 30b with a high
engagement point of contact and a high engagement ring 34. The
larger width and length flexible flaps 11a are used to engage
larger circumference underground landscape boxes 30a with a lower
point of contact and a low engagement ring 32. The precision angle
cut to horizontal of the flexible flaps 11a and 11b allow the
flexible flap to apply a resilient force when contacting the
underground landscape box inner wall 31 thus preventing accidental
removal of the universal box lid 10.
[0026] Each of the flexible flaps 11a, 11b is molded integrally
with the lid 10 and is secured to the underside thereof along
connection lines 12a and 12b, respectively, to a concentric
cylindrical reinforcing ring 14. The ring 14 is formed integrally
with the lid 10. The upper edges of the flaps 11a and 11b are
separated from the lid to provide the necessary flexibility and
resilience. The free edges of the flaps opposite the connection
lines 12a and 12b are provided with locking protrusions 13a and
13b, respectively, that, upon insertion of the lid into the box 30
deflect past and underride the respective locking rings 32 and 34
to provide positive retention of the lid on the box. The lower
edges of the flaps 11a and 11b that define the locking protrusions
13a and 13b are angled with respect to the horizontal (as at 15a
and 15b) so that they may more easily ride along the upper rim of
the box and over the respective engagement rings, both on insertion
and removal of the lid.
[0027] Referring now to FIG. 2 there is shown an underground
landscape box 30 and the boxes inner wall 31 where the flexible
flaps 11b of the universal lid 10 would contact and engage the
inner wall 31 and the inner wall engagement ring 34.
[0028] Referring now to FIG. 3 there is shown an underground
landscape box 30 and the boxes inner wall 31 where the flexible
flaps 11a would contact and engage the inner wall 31 and where the
flexible flaps 11a would engage the inner wall engagement ring
32.
[0029] Referring now to FIG. 4 there is shown the top side of the
universal lid 10 illustrating the precision angles 20 cut into the
universal lid 10. The precision angles of which the flaps 11a and
11b are positioned are defined by slots 20 cut to horizontal to
allow for resilient retention of the flexible flaps 11a and 11b in
insertion and removal of the universal lid 10.
[0030] While the invention has been described in connection with a
preferred embodiment, it is not intended to limit the scope of the
invention to the particular form set forth, but on the contrary, it
is intended to cover such alternatives, modifications, and
equivalents as may be included within the spirit and scope of the
invention as defined by the appended claims.
* * * * *