U.S. patent number 3,803,760 [Application Number 05/279,958] was granted by the patent office on 1974-04-16 for vegetation inhibiting structure.
Invention is credited to Joseph J. Matvey.
United States Patent |
3,803,760 |
Matvey |
* April 16, 1974 |
**Please see images for:
( Certificate of Correction ) ** |
VEGETATION INHIBITING STRUCTURE
Abstract
A vegetation inhibiting member for protective placement adjacent
exterior wall-like surfaces. At least one guard element having an
outer body portion and an inner seal portion. A plurality of guard
elements may cooperate to define a closed protective frame which
may be of any desired configuration. Each guard element body
portion provided with an outer depending ground engaging leg and an
inner depending ground engaging leg. The seal portion being formed
integrally with the body portion and projecting inwardly for
assuming resiliently maintained sealing contact with the wall-like
surface. Hidden splice means for joining abutting edges of adjacent
guard elements and corner elements which serve to define the closed
frame. The seal portion may be made of a resilient plastic material
and the body portion may be composed of a substantially rigid
plastic material.
Inventors: |
Matvey; Joseph J. (Pittsburgh,
PA) |
[*] Notice: |
The portion of the term of this patent
subsequent to November 16, 1988 has been disclaimed. |
Family
ID: |
23071073 |
Appl.
No.: |
05/279,958 |
Filed: |
August 11, 1972 |
Current U.S.
Class: |
47/33;
52/102 |
Current CPC
Class: |
E01F
15/0469 (20130101); A01G 9/28 (20180201); E04H
13/003 (20130101) |
Current International
Class: |
A01G
1/08 (20060101); E04H 13/00 (20060101); E01F
15/04 (20060101); E01F 15/02 (20060101); E04h
013/00 () |
Field of
Search: |
;47/33
;52/102,103,104,585 ;46/31 ;277/208 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Pulfrey; Robert E.
Assistant Examiner: Crowder; Clifford D.
Attorney, Agent or Firm: Silverman; Arnold B.
Claims
I claim:
1. A vegetation inhibiting member for protective placement adjacent
exterior wall-like surfaces comprising
at least one unitary guard element having an outwardly disposed
body portion and an inwardly disposed seal portion,
said body portion having downwardly depending outer and inner
support legs, and
said seal portion being formed integrally with said body portion
and projecting inwardly for assuming resiliently maintained sealing
contact with said wall-like surface, whereby said guard element is
adapted to define a vegetation free region between said wall-like
surface and said outer support leg.
2. The vegetation inhibiting member of claim 1 including
said seal portion being secured to said body portion at or
generally adjacent the innermost portion of said body portion by a
continuous intimate bond established by dual extrusion, and
said seal portion being longitudinally substantially continuous and
substantially coextensive with said body portion.
3. The vegetation inhibiting member of claim 1 including
said seal portion being composed of a resilient plastic material,
and
said body portion being composed of a substantially rigid plastic
material.
4. The vegetation inhibiting member of claim 1 including
said seal portion having a generally web-like cross sectional
configuration and extending generally inwardly to a free end
thereof.
5. The vegetation inhibiting member of claim 4 including
said body portion extending generally upwardly as it extends
inwardly to establish a greater height at its inner extremity than
at its outer extremity, and
said seal portion having a greater average thickness adjacent said
body portion than adjacent said free end.
6. The vegetation inhibiting member of claim 4 including
at least one substantially continuous seal retaining fin formed
within said seal portion emerging from at least one of the seal
portion upper surface and the seal portion lower surface.
7. The vegetation inhibiting member of claim 6 including
at least one said seal retaining fin emerging from said seal
portion upper surface and projecting generally upwardly and
outwardly therefrom when said seal portion is in undeformed
state.
8. The vegetation inhibiting member of claim 1 including
said body portion having a generally horizontal outer portion and a
generally upwardly and inwardly directed inner portion.
9. The vegetation inhibiting member of claim 8 including
said inner and outer support legs each terminating in stabilizing
flanges which are substantially horizontally disposed.
10. The vegetation inhibiting member of claim 1 including
said seal portion having a generally web-like cross sectional
configuration, and
said seal portion extending generally inwardly, then generally
downwardly and then generally outwardly to provide a generally
tubular seal structure.
11. The vegetation inhibiting member of claim 10 including
said web-like seal portion having an upper extremity and a lower
portion each separately connected to said body portion by an
intimate permanent joint therebetween established by dual
extrusion.
12. The vegetation inhibiting member of claim 1 including
said vegetation inhibiting member being a closed frame for sealed
surrounding engagement with said wall-like surface.
13. The vegetation inhibiting member of claim 12 including
said vegetation inhibiting member being a four sided frame defining
a generally rectangular opening for sealed surrounding engagement
with the wall surfaces of a four sided structure,
said frame having elongated guard elements and corner elements each
having a substantially identical cross sectional configuration,
and
concealed splice means joining said guard elements to said corner
elements.
14. The vegetation inhibiting member of claim 13 including
said guard elements having an inwardly open splice receiving
channel disposed adjacent the outer extremity thereof,
said guard elements having an outwardly open splice receiving
channel disposed at a position spaced inwardly from said inwardly
open splice receiving channel, and
splice means including a web-like splice member for each joint
between a said corner element and a said guard element having a
first portion disposed in underlying relationship with respect to
said corner element and a second portion disposed in underlying
relationship with respect to said guard element body portion with
an outer part of said splice member received within said inwardly
open splice receiving channel and an inner portion of said splice
member received within said outwardly open splice receiving
channel, whereby are joined in a butt joint with said web-like
splice member concealed from exterior view.
15. The vegetation inhibiting member of claim 14 including
said corner element being a unitary molded structure having one
said splice member molded to each joining edge thereof and
projecting outwardly therefrom.
16. The vegetation inhibiting member of claim 14 including
said downwardly depending outer support leg being shorter than said
downwardly depending inner support leg,
said outer support leg having an inwardly directed flange which
cooperates with another portion of said outer leg and the overlying
portion of said body portion to define said inwardly open splice
receiving channel, and
said inner support leg having an outwardly directed flange which
cooperates with another portion of said inner leg and the overlying
section of said body portion to define said outwardly open splice
receiving channel, which is disposed at a position spaced upwardly
from the lower extremity of said inner support leg.
17. The vegetation inhibiting member of claim 14 including
said frame being adapted for protective engagement with a generally
rectangular grave marking structure,
at least two web-like splice members each joining two said guard
elements to each other in a butt joint, and
fastener means securing said splice members to overlying portions
of said guard members, whereby relative separation of the joined
members is resisted.
18. The vegetation inhibiting member of claim 17 including
said web-like splice member having a cross sectional configuration
generally the same as that of the overlying body portion of said
guard element or corner element.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a vegetation inhibiting member adapted
for effective sealing engagement with a wall-like surface and more
specifically this invention relates to such a member which is
adapted to be employed as a unitary member or as a unit in a closed
multi-sided vegetation inhibiting frame to resist the growth of
vegetation in the earth underlying the same and between the member
and the wall-like surface or surfaces with which it is engaged.
2. Description of the Prior Art
As a result of the ever increasing labor cost of maintaining
control of vegetation in residential, commercial and cemetery
environments, there has been increased recognition of the need to
adopt effective means for minimizing the amount of labor required.
The same objective exists in connection with the desire of those
doing their own maintenance of grass and other vegetation to
increase the amount of leisure time available for recreation. In
general, this trend has resulted in increased use of motorized
maintenance equipment and a reduced amount of time consuming hand
maintenance. While power devices such as power mowers effectively
reduce the amount of time required to maintain open expanses of
lawn, in lawn portions closely adjacent vertical wall-like surfaces
and other obstructions such as houses, garden borders and grave
marking devices in cemeteries, the power mowers cannot travel
sufficiently close to the wall-like surfaces to entirely eliminate
the need for hand trimming by either manual or power trimmers.
Mowers traveling too close to the wall or grave marking device
increase the risk of damaging contact between them. As the
vegetation in the absence of regular trimming tends to grow out of
control and become unsightly, hand trimming, as by manual or power
trimmers, has been a necessity if an aesthetically pleasing
appearance is to be maintained.
It has been known to employ various types of physical barriers to
extension of vegetation growth into undesired areas. For example,
on lawns it has been known to place barriers such as edging strips,
wood chips, stones or other obstructions to grass extension. In
connection with the growth of grass around grave marking structures
such as tombstones, it has been suggested to provide a structural
border which is placed around the tombstone base in order to
prevent vegetation growth thereunder. See U.S. Pat. No.
3,477,181.
With respect to such barrier structures it is important that they
be so designed as to effectively inhibit vegetation while providing
a durable and economical means of accomplishing vegetation control.
The structure must be capable of withstanding variations in climate
without deterioration in structure or appearance. Also, it must
have sufficient structural integrity to resist occasional
accidental or intensional loads placed on it by either human beings
stepping on the same or equipment such as power mowers rolling over
the same. In addition, the protective members must be capable of
being easily installed by means of relatively unskilled or
semi-skilled labor. Finally, for certain installations such as
cemetery use these required features must be so combined as to
satisfy the rigid requirements with regard to both performance and
appearance established by the various cemeteries.
My U.S. Pat. No. 3,619,944 discloses a vegetation inhibiting guard
in which a separate seal element is secured within a channel of the
guard element in order to provide for the desired structural and
sealing characteristics in the resulting vegetation inhibiting
member.
Many of the prior art devices have been defective with resepct to
one or more of the above enumerated properties. As a result, there
remains a very substantial need for a vegetation inhibiting member
adapted for use with a broad range of exterior wall-like surfaces
where the above characteristics are necessary or desirable.
SUMMARY OF THE INVENTION
The vegetation inhibiting member of this invention provides the
above described desirable features and solves the above described
problems in an effective manner.
The vegetation inhibiting member is adapted for resiliently
maintained sealed substantially coextensive engagement with one or
more exterior wall-like surfaces in order to resist vegetation
growth therebetween and under the vegetation inhibiting member. It
may be provided in the form of a closed member composed of a number
of guard elements and/or corner elements which provide a
substantially coextensive, complementary configuration with respect
to the wall surfaces to be engaged.
The guard element of the present invention has an outwardly
disposed body portion and an inwardly disposed seal portion. The
body portion has a downwardly depending outer support leg and a
downwardly depending inner support leg. The seal portion is formed
integrally with the body portion and projects inwardly in order to
assume resiliently maintained sealing contact with the wall-like
surface. The seal member may preferably be cantilevered inwardly so
as to be flexed either upwardly or downwardly or project directly
into the wall-like surface when in sealing engagement.
Alternatively, in another preferred form, the sealing member may
assume a tubular configuration. In order to enhance sealing
characteristics, the sealing member, which may be generally
web-like in cross-sectional configuration, may be provided with one
or more fins for enhancing resiliently maintained sealing
interengagement with a wall-like surface.
A uniform exterior frame appearance is provided by abutting joints
established between the frame defining elements (guard elements
and/or corner elements) by means of a splice which is hidden from
view when in secured position. The splice elements are adapted to
be slidingly received within confronting ends of adjacent aligned
frame defining elements and positioned in underlying relationship
with respect to portions thereof. Fastening means secure the splice
elements to the abutted frame elements. The splice element may have
an upper surface which is of generally complementary configuration
with respect to the overlying surface of the body portion of the
frame defining elements.
A substantially rigid frame of fixed dimension having effective
ground engagement and resilient substantially continuous sealing
engagement with respect to the wall-like surface or surfaces is
provided.
It is an object of this invention to provide a vegetation
inhibiting structure which effectively and economically serves to
retard the growth of grass, weeds and other undesired vegetation
adjacent to exterior wall-like structures.
It is another object of this invention to provide a closed
frame-like structure composed of effectively joined adjacent
vegetation inhibiting elements which provides a uniform
aesthetically pleasing exterior appearance and has hidden joint
forming elements.
It is another object of this invention to provide such a vegetation
inhibiting structure wherein sealing means of a resilient nature
may be formed as a unit with the body portion of the closed frame
in order to provide for effective positively maintained sealing
against tombstones and other similar exterior multi-sided
structures.
It is another object of this invention to provide a vegetation
inhibiting element which is adapted to effectively prevent
vegetation growth thereunder and also to provide an integrally
formed continuous sealing member to prevent vegetation growth
between the vegetation inhibiting element and the wall-like surface
with which the sealing member is engaged.
It is yet another object of this invention to provide such a
vegetation inhibiting structure which may be economically produced
and readily installed by unskilled or semi-skilled labor.
These and other objects of the invention will be more fully
understood from the following description of the invention, on
reference to the illustrations appended hereto.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a vegetation inhibiting member in
accordance with this invention protectively surrounding a
tombstone.
FIG. 2 is a partial sectional elevation illustrating a detail of
the portion of the frame taken through 2--2 of FIG. 1.
FIG. 3 illustrates a cross sectional view of a guard or corner
element of this invention.
FIG. 4 illustrates a cross sectional view of a splicing element of
this invention.
FIG. 5 illustrates a top plan view of a form of corner element of
this invention.
FIG. 6 is a cross sectional illustration of the corner element
shown in FIG. 5 taken through 6--6.
FIG. 7 is a fragmentary plan view illustrating a corner joint and
guard element butt joint.
FIG. 8 is a cross sectional illustration of a portion of the guard
element butt joint of FIG. 7 taken through 8--8.
FIG. 9 is a fragmentary cross sectional illustration of a modified
form of guard element having a tubular form of sealing portion.
FIG. 9a is a fragmentary cross sectional illustration of the
sealing portion of FIG. 9 in contact with a wall-like surface.
FIG. 10 is a cross sectional illustration of a modified form of
guard element of this invention.
FIG. 11 is a fragmentary cross sectional illustration showing a
modified form of guard element of this invention.
FIG. 12 is a fragmentary cross sectional illustration showing the
modified guard element of FIG. 11 in resiliently maintained sealing
contact with wall-like surface.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring now more specifically to the drawings with particular
reference to FIGS. 1 and 2, there is shown a tombstone 2 having a
tombstone base 4 and a protective frame 6 sealingly positioned
therearound. The protective frame 6 is composed of a number of
substantially straight guard elements 8 which are connected to a
number of corner elements 10 in a fashion to be described in
greater detail below. The guard elements 8 are preferably
longitudinally substantially continuous and of substantially
uniform cross section throughout their length.
Referring now to FIG. 2, it is seen that the guard element 8 is
provided with a body portion 14 and a seal portion 16. In the form
illustrated, the seal portion 16 has been integrally formed with
respect to the body portion 14. The terms "unitary," "integrally
formed" and words of similar import as used herein in respect of
the structural relationship between the body portion 14 and the
seal portion 16 shall be employed to include structures formed as a
unit as by extrusion, molding and dual extrusion (sometimes
referred to as "coextrusion)", as well as separate fabrication with
intimate bonding being effected as by self-bonding, adhesive
bonding, heat welding and other means which establish a structure
which physically and functionally is a single unit, as
distinguished from a member having merely mechanically interengaged
parts.
It is noted that the body portion 14 has an outer downwardly
depending support leg 18 terminating in an inwardly directed flange
20 which is in surface to surface contact with the underlying earth
22. The terms "earth," "ground" and words of similar import as used
herein shall be employed to refer to the underlying material over
which the guard element or the frame lies and protectively shelters
be it soil, some substitute material such as mulch, peat moss or
other vegetation sustaining substance, or any other supporting
material which is positioned under the element or frame. The body
portion 14 also has an inner downwardly depending supporting leg 26
terminating in a generally T-shaped flange 28 which is also
preferably in surface to surface contact with the earth 22. While
support legs 18, 26 could be provided with a lower terminus in the
form of a downwardly directed edge, it is preferred to provide
transverse flanges such as flanges 20, 28 as these serve to enhance
the effectiveness of the ground engagement and also contribute
added longitudinal stiffness to the body portion 14.
In the form shown in FIG. 2, the seal portion 16 has been
resiliently downwardly deformed into resiliently maintained contact
with vertical wall 30 of tombstone base 4. This sealing
relationship is preferably substantially continuous longitudinally
about the entire periphery of tombstone base 4. As used herein, the
reference to "grave marking structure" shall include tombstone
bases, tombstones and other forms of monuments and markers employed
in connection with graves, as well as portions thereof, be they of
smooth or rough or rock surface finish.
Referring once again to FIG. 2, it is noted that body portion 14
has a generally web-like configuration between legs 18, 26. In the
form illustrated, this web-like portion of the body portion 14 has
a generally horizontally disposed outer portion and upwardly and
inwardly directed inner portion. A configuration with an outward
slope is preferred as it facilitates discharge of impinging water
harmlessly exteriorly of the frame. If desired, however, a
substantially horizontal profile or one which slopes inwardly might
be provided. The body portion 14, in the form shown, is directed
outwardly and slightly downwardly in finite stages by means of a
number of steps which will be discussed below. The body portion 14
defines a hollow region thereunder and serves as a light barrier
and a physical obstruction to the growth of vegetation between
support leg 18 and support leg 26. The seal portion 16, which is in
resiliently maintained sealing relationship with respect to
tombstone base 4, serves to provide a light barrier and a physical
obstruction to vegetation growth between inner leg 26 and wall
surface 30 of tombstone base 4. In this fashion, the guard element
8 of this invention serves to provide effective light barriers and
physical barriers which resist undesired growth of vegetation.
Referring now more specifically to FIG. 3, a form of guard element
8 of this invention will be considered in greater detail. It is
noted that the outer leg 18 is substantially shorter than the inner
leg 26. This reduction in height of the body portion 14 as it
extends outwardly serves to facilitate drainage of moisture. As has
been mentioned above, in this preferred form of the invention, the
inner section of the body portion 14 slopes upwardly and inwardly
and the outer portion is generally horizontal. The term
"horizontal" as used herein in this context with respect to guard
element 8 shall include structures having a slight reduction in
elevation as it extends toward the outer extremity, whether the
reductions are effected in finite stages as by steps 32 or by a
gradual slope. In the form employing steps 32, an added advantage
is obtained as the steps 32 function as longitudinal stiffeners of
the body portion 14.
As is further shown in FIG. 3, the sealing portion 16 has been
integrally formed with the body portion 14 with the line of
division being designated by the number 34 for convenience of
reference. The sealing portion 16 has a transverse width
substantially less than that of body portion 14. It is noted that
the seal portion 16 is connected to the body portion 14 at the
innermost part of portion 14 (or adjacent the innermost portion
thereof, if desired) and is cantilevered inwardly therefrom. Also,
it is noted that the seal portion 16 extends inwardly and slightly
upwardly with its thickness being reduced as it approaches free end
36 of seal portion 16. If desired, the free end 36 may be
positioned against the wall-like surface to create the primary
seal, but it will generally be preferable to bend the seal portion
16 upwardly or downwardly in order to create a larger region of
sealing.
Referring now to FIGS. 3 and 4, a form of joining system of this
invention will be considered. It is noted that the body portion 14
is provided with an inwardly open channel 40 which is disposed in
underlying relationship with respect to the web-like body portion.
The channel 40 is disposed closely adjacent the outermost portion
of the body portion 14 and is defined by support leg 18, flange 20
and the overlying section of body portion 14. An outwardly open
channel 42 is defined by rib 44, which emerges from inner leg 26,
in cooperation with the upper portion of leg 26 and the overlying
section of body portion 14.
As is shown in FIG. 4, a splice element has a generally
complementary configuration with respect to the web-like portion of
body portion 14. It has an upwardly and inwardly directed sector 50
and a series of steps 52 which reduce the splice elevation as the
splice member extends toward outermost marginal edge 54. In
effecting joinder of two adjacent guard elements 8 in a manner
which will be more fully described below, the splice member is
slidingly inserted into the aligned guard element 8 in such fashion
that marginal edge 54 is disposed within channel 40 and the
opposite marginal edge 56 is positioned within channel 42 of each
guard element 8. The steps 52 will then be in complementary
underlying relationship with respect to steps 32 and sloping wall
50 will be in underlying complementary relationship with respect to
the sloping wall of body portion 14. While one may rely upon
frictional retention of the splice member to retain the joint, it
is preferable to provide supplemental joint retaining means, such
as adhesives or fasteners.
Referring now to FIGS. 5 and 6, a form of corner element of this
invention will now be considered. In the form shown, the corner
element has a plurality of steps 32 similar to those shown in guard
element 8 and, in general, has substantially the same cross
sectional configuration as guard element 8, except for the slightly
different dimensions at the outermost portion of the corner
intersection. If desired, this right angular exterior intersection
could be curved to provide a frame with rounded exterior corners.
The corner element illustrated has been formed by molding it as a
unitary article. If desired, one might establish mitered corners by
joining two angularly cut sections.
In the form shown, the corner element is provided with a pair of
outwardly projecting integrally formed splice elements 60, 62 which
have been either molded into the corner element or bonded thereto
as contrasted with the form of separate splice elements shown in
FIG. 4. As is shown more clearly in FIG. 6, the splice member 62 is
bonded in intimate surface to surface underlying relationship with
respect to the upper surface 76 of the corner member and is of
generally complementary relationship with respect thereto. These
splice elements 60, 62 originate at a position underlying the
web-like portion of the corner element and emerge into the exposed
sections illustrated beyond edges 64, 66 shown in FIG. 5. These
splice members 60, 62 are preferably provided with preformed
fastener receiving openings 70 to facilitate frame assembly. In
effecting joinder of a corner element of the type shown in FIG. 5
to a guard element 8, the projecting portion of splice member 60 or
62 is inserted into underlying relationship with respect to the
web-like section of body portion 14 with, in the case of splice 60,
outer edge 72 being received within channel 40 and inner edge 74
being received within channel 42. One may then insert suitable
fastening means through body portion 14 and openings 70 to secure
the joint. Among the suitable fastener means contemplated by this
invention are pop rivets, bolts or screws or any other suitable
structurally adequate durable fasteners. Also, adhesives could be
employed in lieu of or in addition to fasteners.
FIG. 7 is a fragmentary top plan view illustrating both corner and
straight section joints employing splice members of the present
invention. As is shown toward the right hand portion of FIG. 7, a
guard element 8a has been secured to a guard element 8b by means of
corner element 10. It is noted that the splice member 62 has been
received within the channels 40, 42 (not shown in this view) of
guard member 8b and fasteners 78 permanently secure the joint
therebetween. It is further noted that the joint established is a
butt joint 80 which effectively conceals the underlying splice
member 62 from view. Similarly, splice member 60 creates butt joint
82 while remaining concealed from view. It is noted that in the
interior corner region, the seal member 16b of guard member 8b
overlaps the seal member 16a of guard member 8a to contribute to
longitudinal seal continuity. While it will generally be
advantageous to provide an integrally formed splice member within
the corner element, if desired, the corner element may be provided
without such a splice and a separate splice member of the general
type shown in FIG. 4 may be employed in joining guard elements 8
and corner elements 10. Also, if desired, an integral splice member
could be provided in a guard element 8 to be joined to a corner
element or another guard element 8.
To provide a further detailed description of the use of a separate
splice member in joining of guard element 8b to guard element 8c,
reference is made to the left hand portion of FIG. 7. In the form
shown, a splice member 86 has approximately one-half secured in
generally underlying relationship with respect to guard member 8c
and one-half secured in general underlying relationship with
respect to guard element 8b with its inner and outer marginal edges
secured within channels 40, 42 of each guard element 8b, 8c. The
splice member 86 serves to provide a concealed means of
establishing butt joint 88 while establishing firm durable
mechanical connection therebetween. Fasteners 78 have been used to
secure the butt joint 88. As is shown in FIG. 8, the splice member
86 remains firmly secured in underlying relationship with respect
to the body portion 90 of guard element 8b in a position generally
spaced above the underlying earth 92.
As is shown in FIG. 8, the seal portion 16 in the solid line
version is shown in its natural position and in the dotted version
16' is shown in a downwardly deflected resiliently sealingly
engaged position with respect to wall surface 94. It is noted that
the free end 96' is in contact with the earth 92. This contact
tends to further resist any tendency for the seal maintained
against wall surface 94 to become unseated. As is shown in FIG. 8,
the upper surface of splice 86 has a complementary configuration
with respect to the lower surface of body portion 90 as this
preferred relationship permits maximum physical interconnection
therebetween. This is not essential, however. Also, the upper and
lower surfaces of the guard element body portion 90 need not be of
identical profile. For example, the upper surface could be stepped
and the lower surface smooth. Similarly, the splice member could
have different shapes provided in the upper and lower surfaces.
Referring now to FIGS. 9 and 9a, a description will be provided of
another preferred embodiment of this invention. In this embodiment,
the body portion 100 has been shown only in part as it may be
basically of the same configuration as other embodiments of the
invention. In general, an inner depending supporting leg 102 is
provided with a terminal flange 104. Seal portion 106 has an upper
extremity secured to body portion 100 at junction 108 and a lower
portion secured to leg 102 at juncture 110. This serves to provide
a tubular form of sealing member defining a hollow interior 112.
This structure may be provided by direct extrusion, extrusion of
one connection 108, 110 and subsequent joinder to create the other,
dual extrusion of the two joints 108, 110 or adhesive joinder or
bonding of one or both of the connections, for example. As is true
with the other embodiments of this invention, this structure is
preferably longitudinally substantially continuous and of generally
uniform cross section throughout its length.
As is shown in FIG. 9a, the seal portion 106 is in resiliently
maintained sealing engagement with wall surface 116 and has its
lower surface 118 in contact with the underlying earth 120. It is
noted that the hollow interior 112' has changed configuration
slightly as a result of compression of the tubular seal 106.
While for purposes of convenience of illustration, the seal portion
of the present invention has generally been illustrated as being in
contact with smooth wall surfaces, it will be appreciated that the
invention is equally suited and may be particularly advantageously
employed with rock face or irregularly faced wall surfaces. The
resiliently maintained sealing action will tend to contribute to
seal continuity by urging the sealing member into recesses within
the wall surfaces and will compensate for outwardly projecting
surfaces. If desired, additional means may be provided to further
enhance the sealing characteristics of this invention whether it is
being employed with smooth or rough surfaced walls. As is shown in
FIG. 10, a guard element 130 has a body portion 132 having a smooth
generally uniform outwardly and downwardly sloping upper wall and
depending legs 134, 136 each having a generally L-shaped flange.
The sealing portion 140 is provided with three sealing fins 142,
144, 146, which in the form shown are generally coextensive with
seal portion 140, project upwardly from the upper surface of the
seal 140 and are directed angularly outwardly and upwardly. The
fins 142, 144, 146 are preferably longitudinally continuous. As is
shown in the dotted form of seal 140' in addition to the
resiliently maintained sealing action of sealing portion 140, fins
142, 144, 146 serve to engage the wall surface 150 and provide for
greater sealing action. The sealing fins 142, 144, 146 are
preferably of reduced average thickness with respect to the sealing
portion 140 and as a result provide increased resiliency to fill
voids in the wall surfaces. It will be appreciated, that in most
instances, a single sealing fin 142 will provide more than adequate
supplementary sealing means, but two, three or more such fins may
be employed, if desired. Also, the sealing portion 140 may be
positioned to be in surface to surface contact with the wall
surface 150 in addition to the fin contact.
Referring now to FIGS. 11 and 12, a modified form of seal 160 which
is adapted to be sealed by resiliently deforming the same upwardly
is shown. In this form, fins 162, 164, 166 project from the lower
surface of the seal 160 and are directed generally downwardly and
outwardly. In FIG. 12 the seal is shown as being resiliently
upwardly deformed and the sealing element 160 and 162, 164, 166 are
in sealing engagement with wall surface 168. As was true in
connection with fins 142, 144, 146, a single fin 162, 164, 166 will
generally provide adequate supplemental sealing means, but
additional fins may be employed, if desired. It should further be
noted that while for purposes of illustration the preferred
orientation of the fins has been shown and described, fins which
project generally vertically or angularly inwardly may also be
employed, if desired. For purposes of simplicity of manufacture and
adaptability of the product for various uses, a sealing element 160
may be provided with both upper and lower fins.
The guard elements and corner elements (as well as the splice
elements) may be made from a wide range of materials. Among the
preferred materials are plastics such as vinyls, polyesters and
polyolefins or rubber or combinations thereof. Among the specific
preferred materials are polyvinyl chloride, polyethylene and
polypropylene. A generally advantageous practice of this invention
results in the manufacture of a guard element or corner element
which has a body portion composed of a substantially rigid plastic
material and a sealing element composed of a resilient plastic
material. This may readily be accomplished by dual extrusion
processes. In fact, one might, for example, employ a polyvinyl
chloride for both the body portion and seal portion, but provide a
significant quantity of plasticizer in the material out of which
the seal will be made in order to provide the desired resilient
sealing characteristics.
While it generally will not be necessary to provide means for
anchoring the protective structures of the present invention to the
ground, hidden anchoring means such as downwardly projecting stakes
or nails depending from a splice section as is suggested in my U.S.
Pat. No. 3,619,944 or other suitable means may be provided, if
desired.
It will therefore be appreciated that the vegetation inhibiting
member of this invention provides an effectively sealed structural
retardant to undesired vegetation growth against exterior wall-like
surfaces and more specifically generally vertical wall-like
surfaces. Where a multi-sided object is to be completely protected
the guard elements and corner elements of this invention may be
suitably joined to provide a closed frame-like vegetation
inhibiting structure. This may readily be accomplished by a
uniquely designed splice element which is adapted to be slidingly
received within adjacent frame elements to provide a concealed butt
type joint. The exterior appearance of the frame member provides a
uniform aesthetically pleasing appearance. The frame is provided
with a resilient sealing strip which is substantially coextensive
therewith and adapted to effectively resiliently seal substantially
coextensively against the wall-like surfaces.
It will further be appreciated that the vegetation inhibiting
member of this invention may be economically manufactured and
readily installed by means of unskilled or semi-skilled labor. The
vegetation inhibiting member may be economically manufactured from
plastic materials by conventional means such as extrusion, molding
or dual extrusion.
While for purposes of specific illustration reference has been made
throughout the discussion to a tombstone-like grave marking
structure, it will be appreciated that the invention may be
employed with a number of types of structures having exterior
wall-like surfaces adjacent to the earth such as against buildings,
walkways, patios and in gardens, for example.
While for purposes of illustration reference has been made herein
to generally straight guard elements usable either alone or joined
to establish a generally rectangular frame, it will be appreciated
that the invention is equally applicable to curved or
longitudinally irregularly configurated members usable either alone
or joined to create other forms of closed frames including circular
or oval shaped frames.
Whereas particular embodiments of the invention have been described
above for purposes of illustration, it will be evident to those
skilled in the art that numerous variations of the details may be
made without departing from the invention as defined in the
appended claims.
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