U.S. patent application number 11/482249 was filed with the patent office on 2006-12-21 for multi-use block and retaining wall.
This patent application is currently assigned to Rockwood Retaining Walls Inc.. Invention is credited to Gerald P. Price, Raymond R. Price.
Application Number | 20060283128 11/482249 |
Document ID | / |
Family ID | 34313969 |
Filed Date | 2006-12-21 |
United States Patent
Application |
20060283128 |
Kind Code |
A1 |
Price; Raymond R. ; et
al. |
December 21, 2006 |
Multi-use block and retaining wall
Abstract
A retaining wall with a series of differently sized, pre-formed
blocks. Each block includes a projection and a recess, with the
projection and recess arranged and configured so that each
projection effectively engages a recess in an adjacent course to
connect and align adjacent courses in registry. Retaining walls
made of horizontal blocks may be stacked in columnar fashion or
running bond fashion. The location of the indexing surface on a
projection relative to the viewable surface of the block may be
varied to enable adjacent courses to be coplanar or tiered in a
variety of predetermined offset distances.
Inventors: |
Price; Raymond R.;
(Rochester, MN) ; Price; Gerald P.; (Rochester,
MN) |
Correspondence
Address: |
Patterson, Thuente, Skaar & Christensen, P.A.;4800 IDS Center
80 South 8th Street
Minneapolis
MN
55402-2100
US
|
Assignee: |
Rockwood Retaining Walls
Inc.
|
Family ID: |
34313969 |
Appl. No.: |
11/482249 |
Filed: |
July 7, 2006 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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|
10674731 |
Sep 30, 2003 |
7096635 |
|
|
11482249 |
Jul 7, 2006 |
|
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|
09798210 |
Mar 2, 2001 |
6651401 |
|
|
10674731 |
Sep 30, 2003 |
|
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Current U.S.
Class: |
52/604 |
Current CPC
Class: |
E04C 1/395 20130101;
E04B 2002/0269 20130101; E02D 29/025 20130101; E04B 2002/0215
20130101; E04B 2002/0263 20130101; E04B 2002/0204 20130101 |
Class at
Publication: |
052/604 |
International
Class: |
E04B 5/04 20060101
E04B005/04 |
Claims
1. A retaining wall comprising a plurality of horizontal, preformed
blocks dry-stacked in at least one course without pins or other
connectors and presenting a uniform course height dimension, each
block comprising a front, a rear, opposing sides, a top and a
bottom, the plurality of blocks including a first block defining a
first predetermined block height dimension, a second block defining
a second predetermined block height dimension different from the
first predetermined block height dimension, a third block defining
a third predetermined block height dimension different from the
first and second predetermined block height dimensions, and a
fourth block defining a fourth predetermined block height dimension
different from the first, second, and third predetermined block
height dimensions, wherein the uniform course height dimension is
evenly divisible by each of the first, second, third and fourth
block height dimensions whereby the stacked blocks define a
non-uniform pattern within the at least one course.
2. The retaining wall of claim 1, wherein one of the first, second,
third or fourth block height dimensions is substantially the
uniform course height dimension.
3. The retaining wall of claim 1, wherein one of the first, second,
third or fourth block height dimensions is substantially one-half
of the uniform course height dimension.
4. The retaining wall of claim 1, wherein one of the first, second,
third or fourth block height dimensions is substantially one-third
of the uniform course height dimension.
5. The retaining wall of claim 1, wherein one of the first, second,
third or fourth block height dimensions is substantially one-fourth
of the uniform course height dimension.
6. The retaining wall of claim 1, wherein the first block defines a
first block width dimension and at least one of the second, third
and fourth blocks define a block width dimension different from the
first block width dimension.
7. The retaining wall of claim 1 wherein each of the horizontal
preformed blocks comprises a front portion presenting a front
surface and a back surface and a rear portion, each block including
a single polyhedral projection extending outwardly from the block
top or bottom, the projection presenting an indexing surface and
presenting a first width dimension in a direction extending between
the front portion and the rear portion of the block, each of the
horizontal preformed blocks defining a recess on the opposite block
top or bottom where the projection is located, the recess extending
transversely across the block between the opposing sides, the
recess comprising a stop surface that is coplanar with the rear
surface of the front; with the projection and the recess extending
vertically in the same direction relative to the block, and with
the projection of each the horizontal preformed blocks arranged and
configured to be received in the recess of the block in an adjacent
course of blocks; and wherein the recess of the block presents a
second width dimension in the direction extending between the front
portion and the rear portion of the block, the second width
dimension greater than the first width dimension so as to enable
the indexing surface of the projection of a second block to engage
the back surface of the front of the block with no other portion of
the projection of the second block contacting the block, so as to
thereby position vertically adjacent blocks together in a
predetermined relation.
8. The retaining wall of claim 1, wherein the wall comprises a
plurality of courses.
9. The retaining wall of claim 8, wherein the plurality of
horizontal, preformed blocks are stacked one above the other in a
columnar fashion with one block in one course positioned directly
over another block in an underlying course.
10. The retaining wall of claim 8, wherein the plurality of
horizontal, preformed blocks are stacked one above the other in a
running bond fashion with each block in one course overlapping the
joint between a pair of blocks in an underlying course.
11. A method of constructing a retaining wall having a plurality of
courses of blocks dry-stacked without pins or connectors, each
course having a uniform course height dimension, the method
comprising: forming a plurality of concrete blocks, each block
comprising a front, a rear, opposing sides, a top and a bottom, the
plurality of blocks including a first block defining a first
predetermined block height dimension, a second block defining a
second predetermined block height dimension different from the
first predetermined block height dimension, a third block defining
a third predetermined block height dimension different from the
first and second predetermined block height dimensions, and a
fourth block defining a fourth predetermined block height dimension
different from the first, second, and third predetermined block
height dimensions, wherein the uniform course height dimension is
evenly divisible by each of the first, second, third and fourth
block height dimensions; assembling a first course of blocks using
at least one of each of the first, second, third, and fourth
blocks, the blocks arranged so as to define a non-uniform pattern
within the first course; and dry-stacking a second course of blocks
on the first course of blocks, the second course including at least
one of each of the first, second, third, and fourth blocks, the
blocks arranged so as to define a non-uniform pattern within the
second course.
12. A retaining wall system having at least one course presenting a
uniform course height dimension, the system including a plurality
of concrete blocks dry-stackable without pins or connectors, each
block comprising a front, a rear, opposing sides, a top and a
bottom, the plurality of blocks including a first block defining a
first predetermined block height dimension, a second block defining
a second predetermined block height dimension different from the
first predetermined block height dimension, a third block defining
a third predetermined block height dimension different from the
first and second predetermined block height dimensions, and a
fourth block defining a fourth predetermined block height dimension
different from the first, second, and third predetermined block
height dimensions, wherein the uniform course height dimension is
evenly divisible by each of the first, second, third and fourth
block height dimensions whereby the stacked blocks define a
non-uniform pattern within the at least one course.
13. The retaining wall system of claim 12, wherein one of the
first, second, third or fourth block height dimensions is
substantially the uniform course height dimension.
14. The retaining wall system of claim 12, wherein one of the
first, second, third or fourth block height dimensions is
substantially one-half of the uniform course height dimension.
15. The retaining wall system of claim 12, wherein one of the
first, second, third or fourth block height dimensions is
substantially one-third of the uniform course height dimension.
16. The retaining wall system of claim 12, wherein one of the
first, second, third or fourth block height dimensions is
substantially one-fourth of the uniform course height
dimension.
17. The retaining wall of claim 12, wherein the first block defines
a first block width dimension and at least one of the second, third
and fourth blocks define a block width dimension different from the
first block width dimension.
18. The retaining wall system of claim 12, wherein the plurality of
blocks are stacked one above the other in a columnar fashion with
one block in one course positioned directly over another block in
an underlying course.
19. The retaining wall system of claim 12, wherein the plurality of
blocks are stacked one above the other in a running bond fashion
with each block in one course overlapping the joint between a pair
of blocks in an underlying course.
20. The retaining wall of claim 12 wherein each of the plurality of
blocks comprises a front portion presenting a front surface and a
back surface and a rear portion, each block including a single
polyhedral projection extending outwardly from the block top or
bottom, the projection presenting an indexing surface and
presenting a first width dimension in a direction extending between
the front portion and the rear portion of the block, each of the
plurality of blocks defining a recess on the opposite block top or
bottom where the projection is located, the recess extending
transversely across the block between the opposing sides, the
recess comprising a stop surface that is coplanar with the rear
surface of the front; with the projection and the recess extending
vertically in the same direction relative to the block, and with
the projection of each the plurality of blocks arranged and
configured to be received in the recess of the block in an adjacent
course of blocks; and wherein the recess of the block presents a
second width dimension in the direction extending between the front
portion and the rear portion of the block, the second width
dimension greater than the first width dimension so as to enable
the indexing surface of the projection of a second block to engage
the back surface of the front of the block with no other portion of
the projection of the second block contacting the block, so as to
thereby position vertically adjacent blocks together in a
predetermined relation.
Description
RELATED APPLICATIONS
[0001] This application is a continuation of U.S. patent
application Ser. No. 10/674,731, entitled MULTI-USE BLOCK AND
RETAINING WALL and filed Sep. 30, 2003, now U.S. Pat. No. ______,
which is a continuation-in-part of prior application Ser. No.
09/798,210, filed Mar. 2, 2001, entitled RETAINING WALL AND METHOD
OF WALL CONSTRUCTION now U.S. Pat. No. 6,651,401.
FIELD OF THE INVENTION
[0002] This invention relates generally to the construction of
retaining walls used in landscaping applications where such walls
are used to provide lateral support between differing ground
levels. More particularly, the present invention relates to a
retaining wall that uses a series of differently sized, pre-formed
horizontal and vertical blocks that operatively connect with each
other along adjacent courses to resist pressure exerted against the
wall by retained back-fill material and ground water.
BACKGROUND OF THE INVENTION
[0003] Retaining walls are widely used in a variety of landscaping
applications. Typically, they are used to maximize or create level
areas and also to reduce erosion and slumping. They may also be
used in a purely decorative manner. In the past, retaining wall
construction was labor intensive and often required the skills of
trained tradespeople such as masons and carpenters. More recently,
retaining wall construction has become significantly simplified
with the introduction of self-aligning, modular, molded blocks of
concrete that may be stacked in courses without the use of mortar
or extensive training. With these types of blocks, it is possible
to erect a retaining wall quickly and economically, and the
finished product creates the impression and appearance of a
conventional block and mortar retaining wall. The feature that
allows such blocks to be so easily and precisely assembled is the
interconnection between adjacent courses of blocks. Typically, each
block will include a projection and a recess located at oppositely
facing surfaces, such as a top surface and a bottom surface, for
example. The projection and recess are complimentarily shaped, with
the projection protruding beyond the bottom surface of the block
and with the recess extending inwardly from the top surface of the
block. In use, a projection of a first block is received within the
recess of a second block to interconnect and position the blocks
adjacent each other in a predetermined relation. With a plurality
of blocks, such interconnections make it possible to lay courses of
blocks in an accurate and expedient manner. Moreover, such an
assembled retaining wall is able to resist lateral forces exerted
by the material being retained and reduce bowing. Blocks having
these interconnections are usually the same size and may be
assembled in a coplanar arrangement in only a simple, running bond
pattern. In a variation of the aforementioned blocks, the
projection and recess may be arranged so that adjacent courses are
offset a predetermined amount. With this type of block, each
successive course may be offset from the preceding course by the
same amount so that the assembled wall is skewed at a predetermined
angle from the vertical. These blocks also have the same dimensions
to enable them to set in only a simple, running bond pattern.
[0004] A recent development in mortarless retaining walls has been
the advent of blended pattern retaining walls. These walls differ
from the aforementioned walls in that the preformed blocks used to
construct a retaining wall are differently sized. This feature
allows retaining walls to be assembled in a variety of patterns and
bonds. Usually, these types of preformed blocks are horizontally
and vertically oriented and have dimensions that are based upon an
incremental unit such as the thickness of a horizontal, preformed
block. For example, the thickness of a horizontal block is one
increment and the height of a vertical block is two increments.
With these types of preformed blocks, it is possible to construct a
retaining wall with no discernable courses. A drawback with such a
retaining wall is that setbacks are not possible and the assembled
retaining wall must be substantially vertical. Alternatively, a
retaining wall may be arranged in thick courses, and the blocks
within these thick courses may be randomly arranged. For example, a
course may be two incremental units high within which the
differently dimensioned preformed blocks are arranged. Or, the
course may be three incremental units high within which the
differently dimensioned preformed blocks are arranged. There are
several drawbacks with this type of wall. One drawback is that the
vertical blocks dictate the height of the course. Thus, if vertical
blocks are used, each entire course must be coplanar and all of the
blocks must lie in the same plane. Otherwise, the projections of
blocks in one course would not be able to be received within the
recesses in blocks of another course, and the interconnection would
be defeated. Another drawback with such this type of wall is that
the number of arrangements available within each course is limited,
and a truly random arrangement is not possible.
BRIEF SUMMARY OF THE INVENTION
[0005] The present invention comprises a plurality of horizontally
elongated and vertically elongated, preformed blocks that may be
assembled to form a retaining wall. Each horizontal preformed block
includes a front member and a rear member connected to each other
by a web, opposing sides, a top portion and a bottom portion. The
horizontal blocks may be formed in a series of predetermined
incremental thicknesses whose additive thickness is equal to the
height of the vertical block. For example, the horizontal blocks
may have incremental thicknesses of one, two and three units, while
the vertical preformed block is three units tall. Thus, the
horizontal blocks may be stacked in whatever units which, when
added together, would be three units tall.
[0006] The front member of each horizontal block includes a
rearwardly facing portion having stop surfaces that are aligned
with each other and are used to operatively connect adjacent
courses of blocks. Each horizontal block also includes a recess and
a projection located at oppositely facing support surfaces,
respectively. Preferably, the recess is located at the top of each
block and extends downwardly with respect to the top support
surface of each block forming a through slot with open ends in
spaced relation to the front member of each block. An important
feature of the recess in these blocks is that the recess includes a
stop surface that is in alignment with stop surfaces of the
rearwardly facing portion of the front member of each block.
Together, these stop surfaces form a single stop surface that
extends substantially along the length of each horizontal block.
This greatly increases the utility of each block because it allows
the blocks of an adjacent upper course of blocks to be slidingly
positioned with respect to a lower course of blocks as the
retaining wall is being constructed. This adds to the number of
possible arrangements of blocks and helps one construct a stronger
retaining wall because aligned vertical joints between adjacent
courses may be easily avoided.
[0007] The projection on the horizontal block extends downwardly
with respect to the bottom surface of each block. Preferably, the
width of the projection is substantially equal to the width of web
that connects the front and rear members together. Each projection
includes an indexing surface that is configured to operatively
contact a stop surface of an adjacent course of blocks.
[0008] Each vertical preformed block includes a front member and a
rear member connected to each other by upper and lower webs,
opposing sides, a top portion and a bottom portion. The front
member of each vertical block includes a rearwardly facing portion
having a stop surface. Each vertical block also includes a recess
and a projection located at oppositely facing support surfaces,
respectively. Preferably, the recess is located at the top of each
block and extends downwardly with respect to the top support
surface of each vertical block forming a through slot with open
ends in spaced relation to the front member of each block. The
recess in these blocks includes a stop surface that is coincident
with the stop surface of the front member, and, as with the
horizontal blocks, the stop surface extends substantially along the
width of each vertical block.
[0009] As with the horizontal block, the projection on the vertical
block extends downwardly with respect to the bottom surface of each
block, and preferably its width is coincident with the width of the
vertical block. Each projection of the vertical block also includes
an indexing surface that is configured to operatively contact the
stop surface of an adjacent course of blocks.
[0010] Another important feature of the aforementioned blocks
relates to the operative connections that occur between the
projections and recesses of adjacent courses of blocks. This is
achieved by using blocks that have a stop surface which is fixed
relative to a common feature of the blocks, such as the viewable
surface, and blocks which have indexing surfaces located at a
series of predetermined distances from a common feature of the
blocks, also such as the viewable surface. For example, to
construct a coplanar wall, one would select those blocks where the
indexing surfaces are at a first predetermined position.
Alternatively, to construct a wall that tilts at a slight angle
with respect to the vertical, a different set of blocks with
indexing surfaces located at a second predetermined position would
be used. And, to construct a wall which tilts at a greater angle
with respect to the vertical, yet another set of blocks with
indexing surfaces located at a third predetermined position would
be used, and-so-on. This feature may be combined with the other
features discussed above to produce a myriad of retaining wall
configurations that may include combinations with different
setbacks and/or no setbacks.
[0011] An object of the present invention is to provide a retaining
wall that may be assembled without the use of mortar.
[0012] Another object of the present invention is to increase the
number of arrangements possible between adjacent blocks in a
retaining wall.
[0013] Yet another object of the present invention is to reduce
undesired lateral movement between adjacent courses in a retaining
wall.
[0014] A feature of the present invention is that vertical,
preformed blocks have a height that is equivalent to two or more
stacked horizontal preformed blocks.
[0015] Another feature of the present invention is that the
horizontal, preformed blocks may have the same thickness or may
have complimentary thickness whose additive thickness is equal to
the height of vertical, preformed blocks.
[0016] Another feature of the present invention is that the courses
of blocks may be assembled in a coplanar or one of several
predetermined offset relations.
[0017] An advantage of the present invention is that the use of
differently sized and oriented preformed blocks permits a retaining
wall to be configured into a myriad of configurations.
[0018] Another advantage of the present invention is that each
course presents a substantially contiguous, aligned stop surface
against which indexing surfaces of projections of an adjacent
course of blocks are positioned.
[0019] Additional objects, advantages and features of the invention
will be set forth in part in the description which follows, and in
part will become apparent to those skilled in the art upon
examination of the following or may be learned by practice of the
invention. The objects and advantages of the invention may be
realized and attained by means of the instrumentalities and
combination particularly pointed out in the appended claims.
BRIEF DESCRIPTION OF THE DRAWINGS
[0020] FIG. 1 is a front, perspective, partial view of one
embodiment of a completed, coplanar retaining wall of the present
invention;
[0021] FIG. 2 is a perspective view of an embodiment of the
preformed blocks of the present invention taken from a position in
front of and above the block;
[0022] FIG. 3 is another perspective view of the block of FIG. 2
taken from the same position, with the block in an inverted and
outwardly facing orientation;
[0023] FIG. 3 is another perspective view of the block of FIG. 2
taken from the same position, with the block in an inverted and
outwardly facing orientation;
[0024] FIG. 4 is a perspective view of another embodiment of the
preformed blocks of the present invention taken from a position in
front of and above the block;
[0025] FIG. 5 is an inverted perspective view of the block of FIG.
4 taken from a position in front of and above the block;
[0026] FIG. 6 a partial side view illustrating a first setback and
the interface between adjacent courses of blocks;
[0027] FIG. 7 is a partial side view illustrating a second setback
and the interface between adjacent courses of blocks;
[0028] FIG. 8 is a partial side view illustrating coplanar
alignment and the interface between adjacent courses of blocks;
[0029] FIG. 9 is a side elevational view of an embodiment
illustrating various setbacks which are possible with the blocks of
the present invention;
[0030] FIG. 10 is a front, perspective, partial view of an
embodiment of a completed, variable setback retaining wall of the
present invention;
[0031] FIG. 11 is a front perspective view of an embodiment of a
retaining wall with horizontal blocks stacked one above the other
in a columnar fashion in accordance with the present invention;
and
FIG. 12 is a front perspective view of an embodiment of a retaining
wall with horizontal blocks stacked one above the other in a
running bond fashion in accordance with the present invention.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0032] With reference to the drawings, FIG. 1 shows one embodiment
of a retaining wall 10 comprising a plurality of horizontally and
vertically oriented preformed blocks 30A, 30B, 30C, and 90 of the
present invention. As will be discussed later in greater detail,
the horizontal, preformed blocks 30A, 30B, and 30C may be formed in
different incremental thickness, and are combinable so that their
total thickness is equal to the height of the vertical, preformed
blocks 90. As shown in FIG. 1, the horizontal, preformed blocks
30A, 30B, 30C may be selected and stacked in combinations of twos
and threes. That is, block 30A and block 30C, two blocks of 30B,
and three blocks of 30C. It will be understood, that each course of
blocks may be defined by the height of the vertical blocks 90.
Thus, beginning with the lower left segment of the wall 10, the
first course 12 comprises two stacked 30A blocks, a vertical block
90, two stacked 30A and 30C blocks, two stacked 30C and 30A blocks,
a vertical block 90 etc. The second course 14 is similarly
constructed, beginning from the upper left segment of the wall 10
with a vertical block 90, three stacked 30C blocks, a vertical
block 90, and so on. Note that the first and second courses 12, 14
are shifted linearly with respect to each other along their top and
bottom surfaces, respectively, by a distance of about one-half the
width of a vertical block 90. This configuration assures that
vertical joints do not span adjacent courses. This not only
strengthens the retaining wall but also allows the blocks to be
arranged in a more random fashion. Note that even though the first
and second courses 12, 14 are arranged to present a more or less
planar viewable surface, an extremely large number of combinations
of blocks are possible, limited only by the imagination of a
designer or an assembler. As a further note, while the viewable
surfaces 34, 94 of the front members 32, 92 of the horizontal and
vertical blocks 30, 90, respectively, are depicted as being
roughened, it is understood that blocks having other surface
finishes and textures may be used.
[0033] Referring now to FIGS. 2 and 3, each horizontal, preformed
block 30 includes a front member 32, a rear member 42, opposing
sides 44a, 46a, a top 50 and a bottom 60. The front member 32
includes a viewable surface 34 having a predetermined texture and
finish. As mentioned above, it is understood that the viewable
surface 34 may be provided with other textures and finishes, as
desired. The front member 32 also includes a rearwardly facing back
surface 36 in spaced relation from the viewable surface 34, with
the back surface 36 including stop surfaces 38, 40. As will be
discussed later, the stop surfaces 38, 40 enable adjacent courses
of blocks to be operatively connected to each other.
[0034] For purposes of this application, the term operatively
connect is understood mean that movement between adjacent courses
of blocks in response to pressure exerted by retained material and
water is resisted by complimentary confronting surfaces in adjacent
courses of blocks.
[0035] Referring again to FIGS. 2 and 3, each horizontal block
includes a rear member 42 having opposing sides 44b, 46b, interior
surfaces 48a, an exterior surface 48b, a top 50, and a bottom 60.
Rear member 42 is held in spaced relation from the front member 32
by a web 74. The web 74 includes opposing sides 76, 78, an upper
surface 80 and a lower surface 82. With regard to FIG. 2, the top
50 of the block includes top support surfaces 52, 54 that are
configured to operatively contact bottom support surfaces 62, 64 of
overlying courses of blocks (See, FIGS. 6-9). The top 50 of the
block 30 also includes a recess 56 that extends downwardly from the
upper surface 80 of the web 74, and downwardly relative to the top
support surfaces 52, 54. The recess 56 includes a stop surface 58
that is in alignment with the stop surfaces 38, 40 of the back
surface 36 of the block 30. Together, these stop surfaces 38, 40
and 56, extend substantially along the entire width of the block 30
and greatly expand the operative connection range available to a
practitioner. Preferably, the stop surfaces 38, 40, and 58 will be
located a certain, fixed distance measured from a feature common to
all of the blocks, such as the viewable surface 34. The bottom 60
of the block 30 includes corresponding bottom support surfaces 62,
64 that are configured to operatively contact top support surfaces
of underlying courses of blocks (See, FIGS. 6-9). The bottom 60 of
the block 30 includes a projection 66 that constitutes the other
part of the operative connection between adjacent courses of
blocks. The projection 66 extends downwardly from the lower surface
82 of the web 74 and downwardly relative to the bottom support
surfaces 62, 64. The projection 66 includes an indexing surface 68
that is configured to operatively contact the stop surface(s) of an
adjacent course of blocks. As will be described later in greater
detail, the indexing surface 68 differs from the stop surfaces in
that there are a plurality of fixed distances measured from a
feature common to all of the blocks, such as the viewable surface
34, at which an indexing surface 68 may be located.
[0036] As described previously, and as shown in the FIG. 1, the
thickness of block 30 may be formed incrementally. That is, the
horizontal blocks may be formed in such a manner to allow stacked
blocks 30 to be equal in height to a vertical block 90. And, while
the incremental units chosen may be quite small, the preferred
incremental thicknesses are approximately one-third, one-half, and
two-thirds of the height of a vertical block 90. For example, the
horizontal blocks may have incremental thicknesses of one, two and
three units, while the vertical preformed block is three units
tall. Thus, the horizontal blocks may be stacked in whatever units
which, when added together, would be three units tall.
[0037] Referring now to FIGS. 4 and 5, each vertical, preformed
block 90 includes a front member 92, a rear member 100, opposing
sides 102, 104, a top 110 and a bottom 120. The front member 92
includes a viewable surface 94 having a predetermined texture and
finish. However, it is understood that the viewable surface 94 may
be provided with other textures and finishes, as desired. The front
member 92 also includes a rearwardly facing portion 96 in spaced
relation from the viewable surface 94, with the rearwardly facing
portion 96 including a stop surface 98. As will be discussed later,
the stop surface 98 enables adjacent courses of blocks to be
operatively connected to each other.
[0038] For purposes of this application, the term operatively
connect is understood mean that movement between adjacent courses
of blocks in response to pressure exerted by retained material and
water is resisted by complimentary confronting surfaces in adjacent
courses of blocks.
[0039] Referring again to FIGS. 4 and 5, each vertical block 90
includes a rear member 100 that is held in spaced relation from the
front member 92 by upper and lower webs 106, 108, respectively, and
opposing sides 102, 104. With regard to FIG. 4, the top 110 of the
block 90 includes top support surfaces 112, 114 that are configured
to operatively contact bottom support surfaces of overlying courses
of blocks (See, FIGS. 6-9). The top 110 of the block 90 also
includes a recess 116 that extends downwardly relative to the top
support surfaces 112, 114 and which includes a stop surface 118
that is coincident with the stop surface 98 of the rearwardly
facing portion 96. As can be seen in FIGS. 4 and 5, the stop
surface 98 (or alternatively 118 in this particular instance)
extends along the entire width of the block 90. Preferably, the
stop surface 98 will be located a certain, fixed distance measured
from a feature common to all of the blocks, such as the viewable
surface 94. The bottom 120 of the block 90 includes corresponding
bottom support surfaces 122, 124 that are configured to operatively
contact top support surfaces of underlying courses of blocks (See,
FIGS. 6-9). The bottom 120 of the block 90 includes a projection
126 that constitutes the other part of the operative connection
between adjacent courses of blocks. The projection 126 also extends
downwardly relative to the bottom support surfaces 122, 124 and
includes an indexing surface 128 that is configured to operatively
contact the stop surface(s) of an adjacent course of blocks. As
will be described later in greater detail, the indexing surface 128
differs from the stop surface in that there are a plurality of
fixed distances measured from a feature common to all of the
blocks, such as the viewable surface 94, at which an indexing
surface 128 may be located.
[0040] As described previously, and as shown in the FIG. 1, the
height of the vertical block 90 is based upon an incremental unit,
such as the thickness of the thinnest horizontal block.
[0041] Before describing FIGS. 6, 7 and 8 in detail, it should be
understood that the operative connection between vertical and
horizontal blocks is essentially the same and the blocks depicted
in FIGS. 6, 7, and 8 could be any combination of horizontal and
vertical blocks. For purposes of simplification, however, the
blocks shown in FIGS. 6-9 will be identified and described with the
convention that each upper course block is a vertical block 90 and
each lower course block is a horizontal block 30. Using the
aforementioned convention, the operative connections between
adjacent courses of vertical blocks as depicted in FIGS. 6, 7 and
8, will now be discussed.
[0042] FIG. 6 illustrates an operative connection in which a
viewable surface 94 of vertical block 90 is offset from a viewable
surface 34 of a horizontal block 30 by a first predetermined
distance 16. As can be seen, the bottom support surfaces 122, 124
of the vertical block 90 are in substantial contact with the top
support surfaces 52, 54 of the horizontal block 30, and the
indexing surface 128 of the projection 126 of vertical block 90 is
in substantial contact with the stop surface (38, 40, 58) of the
back surface 36 and/or recess 56 of the horizontal block 30.
[0043] FIG. 7 illustrates an operative connection in which a
viewable surface 94 of vertical block 90 is offset from a viewable
surface 34 of a horizontal block 30 by a second predetermined
distance 18. And, FIG. 8 illustrates an operative connection in
which a viewable surface 94 of vertical block 90 is coplanar with a
viewable surface 34 of a horizontal block 30. It should be noted
that the recesses depicted in the aforementioned FIGS. 6, 7, and 8
are configured to be sufficiently large enough to accommodate
projections of varying sizes, and the only surfaces at which a
contacting relation must be established in order to operatively
connect or restrain adjacent courses of blocks so that they are
able to resist forces exerted by retained material are the stop and
indexing surfaces of the recesses and projections,
respectively.
[0044] FIG. 9 illustrates an embodiment in which a plurality of
horizontal blocks having different incremental thicknesses are
operatively connected to each other in a plurality of stacked
relations, or groups. As described previously, and as shown in the
FIGS. 1 and 9, the thickness of horizontal block 30 may be formed
incrementally to allow stacked horizontal blocks 30 to be equal in
height to a vertical block 90. For example, a preferred horizontal
block 30 incremental thickness of one, two and three units with
approximately one-third, one-half, and two-thirds of the height of
a vertical block 90 is shown in FIG. 9 by horizontal blocks 30C,
30B and 30C respectively.
[0045] Further shown in FIG. 9 are the viewable surfaces of the two
lowermost horizontal blocks 30A, 30C that are offset from each
other by a first predetermined distance 16. The viewable surfaces
of the second and third horizontal blocks 30C, 30B are offset from
each other by a second predetermined distance 18, and the viewable
surfaces of the two uppermost horizontal blocks 30B, 30B are
coplanar.
[0046] FIG. 10 illustrates an embodiment in which a retaining wall
includes a plurality of blocks, some of which have been setback.
Beginning with left side, there are two horizontal blocks 30B, 30B
that are stacked one above the other in a group, with the upper
block 30B set back from the lower block 30B a predetermined
distance. Next, there are two horizontal blocks 30A, 30C that are
stacked one above the other in another group, with the upper block
30A set back from the lower block 30A a predetermined distance.
Next, there is a vertical block 90 that is set back a predetermined
distance. And finally, there is a horizontal block 30A. Thus, the
lowermost horizontal blocks of this embodiment are in alignment
with each other, while the uppermost horizontal blocks and the
vertical blocks are in alignment with each other. Note that the
course as depicted is equal to the height of the vertical block.
More importantly, with this invention it is possible to have
setbacks between adjacent stacked and/or vertical blocks within
each course. Thus the possible arrangement of blocks is greatly
increased to provide a nearly limitless variety of configurations
available to a practitioner.
[0047] Shown in FIG. 11 is a retaining wall embodiment where a
plurality of horizontal preformed blocks 30 are stacked one above
the other in a columnar fashion 130. One block 30 in one course is
positioned directly over another block 30 in an underlying course.
Blocks 30 stacked in a columnar fashion 130 may also be positioned
in one course in a predetermined relation with blocks 30 in an
adjacent course as the indexing 68 and stop surfaces 62, 64 of
adjacent courses of blocks 30 are brought into registry with each
other. Another predetermined relation for positioning the blocks 30
is a setback wall in which one block is offset a first
predetermined distance from another such that the wall has a
constant upwardly receding slope or batter. A third type of
predetermined relation for positioning the blocks contemplated by
the invention is a setback with a variable upwardly receding slope
in which a plurality of predetermined distances is used to offset
one block from another.
[0048] Blocks 30 stacked in a columnar fashion 130 of the present
invention provide the advantage of allowing the viewable surface 34
of a horizontal block 30 to be positioned in a variety of
predetermined relations to another viewable surface 34 of another
block 30. Blocks 30 stacked in a columnar fashion 130 may be
positioned in a coplanar relation to another viewable surface 34. A
coplanar relationship between the viewable surfaces 34 of
horizontal blocks 30 can be understood by modifying FIG. 8 such
that the vertical block 90 is replaced by another horizontal block
30. Similarly, by replacing the vertical block 90 with another
horizontal block 30 in FIGS. 6 and 7, one can appreciate two other
types of viewable surface relations made possible by blocks 30
stacked in a columnar fashion 130. The distance between the
viewable surface 34 of lower block 30 from the viewable surface 34
of the upper block 30 is shown by a first predetermined distance
16. Thirdly, in a setback retaining wall with columnar stacks 130,
horizontal blocks 30 of the present invention may be offset from
each other by a plurality of predetermined distances. A
modification of FIG. 7 would show the difference between the two
viewable surfaces 34 of the two horizontal blocks 30 as a
predetermined distance 18.
[0049] FIG. 12 illustrates an embodiment of a running bond 140 type
of stacked retaining wall of the present invention. The same
advantages provided by the invention to a columnar stacked
retaining wall 10 are also provided for a running bond 140 stack of
horizontal blocks 30. The indexing 68 and stop surfaces 62, 64 may
be used to position blocks 30 in one course into a predetermined
relation with blocks 30 of an adjacent course. In a running bond
140 stack of blocks 30, the viewable surfaces 34 of the blocks 30
in one course may be positioned into a predetermined relation with
blocks 30 of an adjacent course as the indexing 68 and stop
surfaces 62, 64 of the adjacent course of blocks 30 are brought
into registry with each other. Both the blocks 30, and the viewable
surfaces 34 of the blocks 30, respectively, may be positioned in a
predetermined relation with each other in a running bond 140
retaining wall 10. In a running bond 140 retaining wall 10, blocks
with a plurality of predetermined distances may be positioned in a
coplanar relation, a constant batter relation, or a variable batter
relation.
[0050] A significant advantage to the present invention can be seen
in FIG. 12 with a running bond 140 stacked retaining wall. A recess
in preexisting blocks offered limited width, which consequently
limited the placement options of the horizontal blocks 30 laterally
along the course of the wall. The present invention recess 56
extends continuously and completely through the block 30. Now a
block in a running bond pattern may be moved laterally as much as
desired in either direction, providing more options and
patterns.
[0051] The present invention having thus been described, other
modifications, alterations or substitutions may present themselves
to those skilled in the art, all of which are within the spirit and
scope of the present invention. It is therefore intended that the
present invention be limited in scope only by the claims attached
below:
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