The present invention is directed to an apparatus for stamping concrete with patterns, textures or both.
Concrete is a staple in the construction industry. It is a preferred material because of its costs. Concrete is typically poured in slabs. Typically, the poured concrete slabs are given a broom finish pattern, by merely sweeping over the concrete with a broom or the like and letting it harden and dry.
Other finish patterns can be put into concrete, to create other aesthetically pleasing surfaces. These finish patterns are typically “stamped” into the concrete by placing flat mats with patterns over the concrete, tamping the mats, with rods and the like, into contact with the wet concrete, and removing these flat mats.
This method of using the patterned mats is subject to numerous drawbacks. Initially, the amount of concrete that can be worked on in a day is limited. These amounts are typically about 15 yards per pour, three times a day, resulting in about 45 yards per day. Additionally, the tamping for each 15 yard portion takes time. Should other 15 yard portions be poured in parallel, they be tamped later in time, when the concrete is tightened, resulting in a non-uniform pattern being stamped into adjacent portions. Finally, stamping in this manner requires judgment of an experienced, well trained workperson, to judge when the stamping process will be optimal. This is because this kind of stamping can not be performed when the concrete is too wet or alternately, too “tight” or dry.
The present invention provides apparatus and methods for stamping large volumes of concrete in short time spans, with stamps, of patterns, textures or both. The resultant stamping is uniform over the entire series of concrete slabs. A single apparatus of the invention can be used on concrete when it is both wet and tightening, eliminating the need for switching stamps and/or machinery to achieve uniform stamping as the concrete is worked at different stages of its tightening. The apparatus is easy to operate and can be operated by concrete workers of all skill levels, eliminating errors associated with human judgment as well as the need for skilled concrete stamping personnel. The apparatus is also such that it does not require the preparation and stamping time, as associated with conventional stamping mats, allowing for more yards of concrete to be poured and subsequently stamped in a workday or work session, than with these contemporary methods and devices.
The present invention provides an apparatus, to which weight can be added, to accommodate stamping during the tightening of the concrete. By adding this weight, a uniform stamping can be achieved, with the resultant, stamp, of patterns, textures, or both being uniform among all of the slabs in a series of poured concrete slabs.
An embodiment of the invention is directed to a stamping apparatus. This stamping apparatus includes a roller, the roller including a surface defined by a stamp; and a receiver portion, for example, a support member, for receiving the roller in a rotatable engagement. The receiver portion is configured for weighting the roller. The stamp can include a pattern, a texture, or combinations of patterns and textures.
Another embodiment is directed to a stamping apparatus including a roller received by a receiver portion, for example, a support member. The roller includes a surface defined by a stamp, and the receiver receives the roller in a rotatable engagement, and includes at least one holder for holding removable weights. The stamp includes a pattern, a texture, or combinations thereof.
Another embodiment is directed to a stamping apparatus. This apparatus includes a roller, the roller including a surface of at least one layer including a stamp therein; and a receiver portion for receiving the roller in a rotatable engagement. This receiver portion also includes at least one holder for holding removable weights. The stamp includes a pattern, a texture, or combinations thereof.
Another embodiment is directed to a method for stamping concrete. This method includes providing a stamping apparatus including a roller, the roller including a surface defined by a stamp; and a receiver portion (e.g., a support member) for receiving the roller in a rotatable engagement, the receiver portion configured for weighting the roller; weighting to the receiver portion in accordance with the tightness of the concrete being worked; and moving the apparatus over the concrete being worked for stamping the concrete in accordance with the stamp. The weighting process can include adding, subtracting or simply not adding any weight to the receiver portion. The stamp includes a pattern, a texture, or combinations thereof.
Another embodiment is directed to a method for making a concrete stamp. This method includes providing a mold for a roller having a substantially cylindrical shaped cavity and an inner wall, the inner wall including an imprint corresponding to a stamp; placing material into contact with the inner wall to form a layer that includes a stamp corresponding to the imprint; and filling at least a substantial portion of the remaining cavity with a filler material to form a body for the roller. The roller can then be released from the mold. The imprint for the stamp can include a pattern, a texture or combinations thereof.
Another embodiment is directed to a stamping apparatus having a roller, including a surface defined by a stamp, a receiver portion for receiving the roller in a rotatable engagement, and a fluid transport system. The fluid transport system includes at least one conduit for providing fluid to the roller along the surface. The fluid facilitates release (separation) of the roller from the concrete, and can be for example, water, oil, a water-based composition, an oil-based composition, a petroleum-based composition, or the like. The at least one conduit is typically a single conduit or line that typically branches into sublines, or alternately a single subline. These sublines are configured for extending at least to the receiver portion for providing fluid to the roller along the surface.
Another embodiment is directed to a stamping apparatus having a roller, the roller including a surface defined by a stamp, a receiver portion for receiving the roller in a rotatable engagement, the receiver portion configured for weighting the roller; and a fluid transport system. This fluid transport system includes at least one conduit for providing fluid to the roller along the surface. The at least one conduit is typically a single conduit or line that typically branches into sublines, or alternately a single subline. These sublines are configured for extending at least to the receiver portion for providing fluid to the roller along the surface.
Another embodiment is directed to a method for stamping concrete. This method includes providing a stamping apparatus having a roller, the roller including a surface defined by a stamp, a receiver portion for receiving the roller in a rotatable engagement, and a fluid transport system, the system including at least one conduit for providing fluid to the roller along the surface. The apparatus is then moved over the concrete being worked for stamping the concrete in accordance with the stamp, and typically when needed, the fluid transport system is activated, releasing fluid onto the surface of the roller.
Another embodiment details a method for stamping concrete, where there is provided a stamping apparatus including a roller, the roller including a surface defined by a stamp, a receiver portion for receiving the roller in a rotatable engagement, the receiver portion configured for weighting the roller, and a fluid transport system, the system including at least one conduit for providing fluid to the roller along the surface. The receiver portion is weighted in accordance with the tightness of the concrete being worked, and the apparatus is moved over the concrete being worked for stamping the concrete in accordance with the stamp. Typically, when needed, the fluid transport system is activated, releasing fluid onto the surface of the roller.
Attention is now directed to the attached drawings, wherein like reference numerals indicate corresponding or like components. In the drawings:
Turning also to
Alternately, as shown in
These lateral members 36 are supported by a cross bar 40 of the support member 31. The lateral members 36 and cross bar 40 are typically of metal, such as aluminum, stainless steel or the like. This cross bar 40 typically attaches to the lateral members 36 by bolts, screws or other mechanical type fasteners. Additional securement may be with welds, adhesives and the like. Alternately, the support member 31 may be unitary member, formed of metal, such as aluminum, stainless steel or the like, with the lateral members 36 bent downward from the cross bar 40. A joint 42, typically pivotal, for receiving and engaging the handle 21 is typically attached to the cross bar 40, for example, by conventional fastening structures and methods.
The cross bar 40 itself is of a weight, such that a sufficient imprinting or stamping can be made in wet concrete. The cross bar 40 is also of sufficient strength such that it can support additional weight, that is placed onto it when desired. Weight holders, for example, posts 44, extend from the cross bar 40, that coupled with the surface 48 of the crossbar 40, support weights 50. These weights 50 are such that they can be added or removed by the user (as shown by the hand 51), depending on the dryness (tightness) of the concrete. These weights 50 are typically small weights, with holes in the middle, but other shapes and configurations of weights and corresponding weight holders on the cross bar 40 are also suitable.
This arrangement of weights 50 allows the apparatus 20 to be weighted adjustably, such that the concrete 22 can be imprinted uniformly, even though different portions of the concrete 22 are imprinted when the concrete 22 is at different stages of tightening (hardening). By allowing for adjustable weighting, a single apparatus 20 can be used for the entire area of concrete 22 that has been poured.
The stamp or imprint 26 defining the outer surface 28 of the roller 24 is typically in the layer of material 30. The stamp or imprint 26 is typically a pattern, such as bricks, a texture, such as a worn surface, or both (a pattern and a texture, for example, in various combinations), such as worn bricks. The layer of material 30 is typically an elastomeric or polymeric material, one such material being urethane rubber. However, other materials are also suitable, provided they are able to release from concrete, either alone or with the assistance of a release agent or coating.
The material layer 30 may be as thick as desired, provided the desired imprint or stamp 26 is contained therein. This material layer 30 is typically supported by foam 54 or other filling material, that fills the cavity 110 (and accordingly, the interior of the roller 24, defining a body 55 for the roller 24), surrounded by the material layer 30 during manufacturing of the roller 24, as shown in
Turning to
A leveling stand 104 is placed below the mold 100. The surface 101 of the mold 100 is then coated with a material, typically urethane rubber or other curable material, to the desired thickness, to form the material layer 30 that retains the imprint. The material layer 30, for example, is a rubber layer, that is left to cure. This material layer 30 surrounds a cavity 110 in the mold 100. A cap 112, for fitting over the open end of the mold 100, is placed over the open end of the mold 100, for example in a friction fit. The cap 112 includes openings 114, 115. A rod 116, that becomes the axle 32 in the finished roller 24 is placed into aligned openings 115, 117 (in the leveling stand 104) and temporarily affixed in place by bolt assemblies 118 or other suitable fastening means. Once the rubber has cured, foam is added to the cavity 110 through the openings 114, where it hardens (forming the body 55 for the roller 24). The ends of the now formed roller 24 (
The alternate roller 24 of
As shown in
Turning also to
Rubber, such as urethane, or other polymeric material, typically that is curable, is then poured into the mold 100, in the space between the surface 101 and the core 130 (PVC pipe). The rubber or other polymeric material then cures, to form the material layer 30′ for the roller 24′ of the apparatus 20′ shown in
Alternately, the rod 116 need not be included and the core 130 can be filled as detailed above (with the opening 117 in the leveling stand 104 plugged, as detailed above). Axle portions, such as those 32a, 32b of
In an alternate apparatus 220, as shown in
Turning back to
The sublines 333 are constructed to be retained in the rings 331a to extend beyond the support member 331, so as to provide fluid, such as lubricant or release fluid (typically in a spray stream 335) to the roller 24 (on its surface 28). The sublines 333 typically terminate in spray nozzles 336 or the like, to allow for distribution of the fluid from the tank 325 over the entire roller 24.
Alternately, the sublines 333 could be positioned so as to release fluid directly onto the concrete 370 (
The tank 325 is typically a vessel, closed by a lid 337 or other similar closure. The tank 325 is typically portable, in the form of a backpack, and includes straps 339 for receiving the arms of a user 360 (
The line 326 extends from the tank 325 through the handle 341 (similar to the handle 21 detailed above, except that it accommodates the line and includes openings 345 for the sub-lines 333). Alternately, a tank need not be used and the line 326 can connect to any other sprayer system.
The handle 341 also supports a grip 351, typically spring biased (movable in accordance with the arrow 352), that activates a pressuring member (not shown), When squeezed inward, toward the handle, pressure is placed on the line 325 by the pressuring member, causing fluid to be released from the sublines 333, onto the roller 24.
Turning to
Although not shown, should a support capable of accommodating weights be used, as the concrete 22 tightens, weights 50 can be added to the apparatus 320. Operation would be similar to that for the apparatus 20 as detailed above. Weighting (as well as removal of weights 50) continues for as long as desired, depending on the tightness of the concrete 370. This pulling of the apparatus 320 continues until all of the desired concrete area has been stamped.
Turning now to
Alternately, the line 325 can be positioned such that it releases the fluid directly onto the concrete 370 (
Thus, there has been shown and described apparatus and processes for stamping concrete It is apparent to those skilled in the art, however, that many changes, variations, modifications, and other uses and applications for the above described embodiments are possible, and also such changes, variations, modifications, and other uses and applications which do not depart from the spirit and scope of the invention are deemed to be covered by the invention, which is limited only by the claims which follow.
This application is a continuation-in-part of U.S. patent application Ser. No. 10/603,340, entitled: CONCRETE STAMPING APPARATUS, filed on Jun. 25, 2003. U.S. patent application Ser. No. 10/603,340 is incorporated by reference herein.
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86 05863 | Apr 1986 | FR |
Number | Date | Country | |
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20040265059 A1 | Dec 2004 | US |
Number | Date | Country | |
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Parent | 10603340 | Jun 2003 | US |
Child | 10697364 | US |