Snap-Tie Cone Device

Abstract

A snap-tie cone device is provided. The invention is comprised of a device and method for securing formwork in concrete wall construction, comprising a snap tie formed from high tensile wire with integral and inner heads for anchoring and alignment within the form panels. The snap tie resists rotational forces through selected anti-twist portions and interacts with detachable cones designed to establish wall thickness and facilitate formwork removal. The cones are laterally installed onto the snap tie via a slit design enabling snap-on engagement. During use, cones are positioned against inner form surfaces and retained under compression, enabling concrete to be poured and cured while preserving dimensional stability. Following curing, the snap tie ends are broken off and the cones are either removed or retained within the concrete, based on construction requirements.

Description

CROSS-REFERENCE TO RELATED APPLICATION

[0001] The present application claims priority to, and the benefit of, U.S. Provisional Application No. 63 / 749,789, which was filed on January 27, 2025, and is incorporated herein by reference in its entirety.FIELD OF THE INVENTION

[0002] The present invention relates generally to the field of concrete forms. More specifically, the present invention relates to a device and method for securing formwork in concrete wall construction. Accordingly, the present disclosure makes specific reference thereto. Nonetheless, it is to be appreciated that aspects of the present invention are also equally applicable to other like applications, devices, and methods of manufacture.BACKGROUND

[0003] In the field of concrete construction, particularly in the formation of vertical structural elements such as foundations and footings, maintaining accurate wall dimensions is essential for both structural integrity and aesthetic appearance. Traditional methods utilize snap ties fitted with permanently affixed cones to maintain form spacing during concrete pouring. These snap ties are typically inserted through formwork panels and resist the lateral force exerted by fluid concrete, thereby ensuring wall uniformity. However, practical limitations arise when rebar cages are installed prior to the placement of the snap ties. In these cases, the pre-installed cones cannot be maneuvered into position within the limited access openings of the plywood formwork. This limitation necessitates the removal of cones from the snap ties, which compromises the original design intent of maintaining dimensional accuracy. Additionally, the absence of cones during the concrete curing process results in irregular wall surfaces and unsealed holes that require extensive patching. These patching operations are labor-intensive and increase overall project costs. Furthermore, the lack of adaptable cone designs impedes the efficiency of construction workflows and the aesthetic quality of the final concrete surface.

[0004] Therefore, there exists a long-felt need in the art for a snap-tie cone device that permits cone installation after rebar placement within plywood formwork. There also exists a long-felt need in the art for a snap-tie cone device that facilitates consistent wall dimensioning without requiring permanent cone attachment. Moreover, there exists a long-felt need in the art for a snap-tie cone device that reduces labor and material costs associated with patching unfinished or exposed concrete voids.

[0005] The subject matter disclosed and claimed herein, in one embodiment thereof, comprises a snap-tie cone device. The invention is comprised of a device and method for securing formwork in concrete wall construction, comprising a snap tie formed from high tensile wire with integral and inner heads for anchoring and alignment within the form panels. The snap tie resists rotational forces through selected anti-twist portions and interacts with detachable cones designed to establish wall thickness and facilitate formwork removal. The cones are laterally installed onto the snap tie via a slit design enabling snap-on engagement. During use, cones are positioned against inner form surfaces and retained under compression, enabling concrete to be poured and cured while preserving dimensional stability. Following curing, the snap tie ends are broken off and the cones are either removed or retained within the concrete, based on construction requirements.

[0006] In this manner, the snap-tie cone device of the present invention accomplishes all the foregoing objectives and provides a cone that is laterally attachable to a snap tie through a slit or snap-on mechanism, enabling installation after rebar placement and formwork assembly. The device further maintains the traditional function of cones in spacing form panels to achieve uniform wall thickness while offering improved flexibility in use. The cones can be selectively positioned along the snap tie, and depending on the material and design, may be removed or left embedded after the concrete has cured. These features streamline the construction process, enhance the quality of the final concrete finish, and significantly reduce the need for post-construction repairs.SUMMARY

[0007] The following presents a simplified summary to provide a basic understanding of some aspects of the disclosed innovation. This summary is not an extensive overview, and it is not intended to identify key / critical elements or to delineate the scope thereof. Its sole purpose is to present some general concepts in a simplified form as a prelude to the more detailed description that is presented later.

[0008] The subject matter disclosed and claimed herein, in one embodiment thereof, comprises a snap-tie cone device. The device is comprised of at least one snap tie primarily used in constructing vertical concrete structures such as footings and foundation walls. The snap tie is formed from a high tensile wire configured to resist forces exerted by fluid concrete during curing. Each end of the snap tie is comprised of at least one integral head that anchors to external formwork hardware. At least one inner head is positioned inward from each end to align with the inner surfaces of the concrete forms. The integral and inner heads may feature standard round or hexagonal shapes to accommodate varying formwork systems. Selected sections of the snap tie are configured to prevent twisting during removal after concrete curing. These anti-rotation features may include curved, flattened, or non-circular cross-sectional geometries such as oval or polygonal shapes.

[0009] The device is further comprised of at least one cone in sliding or snap-on engagement with the snap tie. The cone is not permanently affixed and is selectively attachable. The cone may have a frustoconical profile and be fabricated from plastic, metal, or composite materials, with length and composition selectable based on structural or formwork requirements. Certain embodiments of the cone may incorporate color-coding for easy identification or a textured outer surface to improve manual handling. The cone may be manufactured using additive manufacturing methods such as fused deposition modeling, stereolithography, or selective laser sintering, utilizing thermoplastics or engineering-grade resins.

[0010] One cone embodiment is comprised of a hollow frustoconical body with a cylindrical opening to receive the snap tie and a longitudinal slit for lateral snap-on engagement. Drainage channels may be included to facilitate moisture escape, and a peripheral flange may be provided for improved sealing against formwork and to reduce seepage.

[0011] An alternative cone embodiment features an internal structure with longitudinal reinforcing elements and cavities to reduce weight while maintaining structural integrity. This embodiment may also include embedded fiber reinforcements to enhance tensile strength and crack resistance, along with external indexing marks for alignment.

[0012] Additional features applicable to any cone embodiment may include fire-resistant coatings and magnetic inserts for temporary fixation to steel form panels. These features may be used individually or in combination to suit specific construction environments.

[0013] During operation, the snap tie spans opposing wall form panels, with cones positioned to establish wall thickness. After curing, the outer ends of the snap tie are broken off near the inner heads, and the formwork and cones are either removed or left in place, based on the cone design and material.

[0014] The invention also includes a method for using the device. The method involves providing a snap tie with integral and inner heads, laterally attaching a cone via a slit to the snap tie, positioning the cones against formwork panels, securing the assembly, pouring concrete, allowing curing, snapping off the snap tie ends, and optionally removing or leaving the cones embedded in the cured structure.

[0015] Accordingly, the snap-tie cone device of the present invention is particularly advantageous as it provides a cone that is laterally attachable to a snap tie through a slit or snap-on mechanism, enabling installation after rebar placement and formwork assembly. The device further maintains the traditional function of cones in spacing form panels to achieve uniform wall thickness while offering improved flexibility in use. The cones can be selectively positioned along the snap tie, and depending on the material and design, may be removed or left embedded after the concrete has cured. These features streamline the construction process, enhance the quality of the final concrete finish, and significantly reduce the need for post-construction repairs. In this manner, the snap-tie cone device overcomes the limitations of existing cones and methods of use known in the art.

[0016] To the accomplishment of the foregoing and related ends, certain illustrative aspects of the disclosed innovation are described herein in connection with the following description and the annexed drawings. These aspects are indicative, however, of but a few of the various ways in which the principles disclosed herein can be employed and are intended to include all such aspects and their equivalents. Other advantages and novel features will become apparent from the following detailed description when considered in conjunction with the drawings.BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The description refers to provided drawings in which similar reference characters refer to similar parts throughout the different views, and in which:

[0018] FIG. 1 illustrates an isometric view of a snap tie and cone of one potential embodiment of a snap-tie cone device of the present invention in accordance with the disclosed architecture;

[0019] FIG. 2 illustrates an expanded view of a central portion of a snap tie of one potential embodiment of a snap-tie cone device of the present invention in accordance with the disclosed architecture;

[0020] FIG. 3 illustrates an expanded view of an end portion of a snap tie of one potential embodiment of a snap-tie cone device of the present invention in accordance with the disclosed architecture;

[0021] FIG. 4 illustrates an isometric view of a cone of one potential embodiment of a snap-tie cone device of the present invention in accordance with the disclosed architecture;

[0022] FIG. 5 illustrates an isometric view of a cone of one potential embodiment of a snap-tie cone device of the present invention in accordance with the disclosed architecture;

[0023] FIG. 6 illustrates an isometric view of a cone of one potential embodiment of a snap-tie cone device of the present invention in accordance with the disclosed architecture; and

[0024] FIG. 7 illustrates a flowchart of a method of using one potential embodiment of a snap-tie cone device of the present invention in accordance with the disclosed architecture. DETAILED DESCRIPTION

[0025] The innovation is now described with reference to the drawings, wherein like reference numerals are used to refer to like elements throughout. In the following description, for purposes of explanation, numerous specific details are set forth to provide a thorough understanding thereof. It may be evident, however, that the innovation can be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form to facilitate a description thereof. Various embodiments are discussed hereinafter. It should be noted that the figures are described only to facilitate the description of the embodiments. They are not intended as an exhaustive description of the invention and do not limit the scope of the invention. Additionally, an illustrated embodiment need not have all the aspects or advantages shown. Thus, in other embodiments, any of the features described herein from different embodiments may be combined.

[0026] As noted above, there exists a long-felt need in the art for a snap-tie cone device that permits cone installation after rebar placement within plywood formwork. There also exists a long-felt need in the art for a snap-tie cone device that facilitates consistent wall dimensioning without requiring permanent cone attachment. Moreover, there exists a long-felt need in the art for a snap-tie cone device that reduces labor and material costs associated with patching unfinished or exposed concrete voids.

[0027] The present invention, in one exemplary embodiment, is comprised of a snap-tie cone device. The device is comprised of at least one snap tie primarily utilized in the construction of vertical concrete structures such as footings and foundation walls. The snap tie is formed from high tensile wire configured to withstand the forces exerted by fluid concrete during curing. Each end of the snap tie includes at least one integral head that engages with external formwork hardware. At least one inner head is positioned inward from each end to align with the inner surfaces of the concrete forms. The integral and inner heads may be formed in standard round or hexagonal shapes to accommodate different formwork configurations. Certain sections of the snap tie are shaped to prevent rotation during removal after curing, using features such as curved, flattened, or non-circular geometries, including oval or polygonal cross-sections.

[0028] The device is further comprised of at least one cone that engages the snap tie in a sliding or snap-on manner. The cone is selectively attachable and not permanently fixed. The cone may have a frustoconical shape and may be fabricated from plastic, metal, or composite materials, with dimensions and materials chosen based on specific structural or formwork needs. In some embodiments, the cone may include color-coding for identification or a textured exterior to assist with manual handling. Additive manufacturing methods such as fused deposition modeling, stereolithography, or selective laser sintering may be used to fabricate the cone using thermoplastics or engineering-grade resins.

[0029] One embodiment of the cone is comprised of a hollow frustoconical body with a cylindrical opening configured to receive the snap tie and a longitudinal slit for lateral snap-on engagement. The cone may include drainage channels to allow moisture to escape and a peripheral flange at the base to enhance sealing against the formwork and reduce concrete seepage.

[0030] An alternative cone embodiment includes an internal structure with longitudinal reinforcing elements and cavities to reduce weight while maintaining rigidity. This embodiment may also feature embedded fiber reinforcements to increase tensile strength and crack resistance, along with indexing marks on the outer surface to assist with alignment.

[0031] Additional features applicable to any cone embodiment may include fire-resistant coatings and magnetic inserts to temporarily fix the cone to steel form panels. These features may be applied individually or in combination to accommodate various construction environments.

[0032] During use, the snap tie extends between opposing wall form panels, and cones are positioned to define the final wall thickness. After the concrete has cured, the ends of the snap tie are broken off near the inner heads, and the formwork and cones are either removed or left embedded, depending on the cone material and design.

[0033] The invention further includes a method of using the device. The method comprises providing a snap tie with integral and inner heads, laterally attaching a cone to the snap tie using a slit, positioning the cones against the formwork panels, securing the assembly, pouring concrete, allowing it to cure, breaking off the ends of the snap tie, and either removing or leaving the cones in the concrete structure.

[0034] Therefore, the device is particularly advantageous by enabling lateral attachment of the cone through a slit or snap-on mechanism, allowing installation after rebar placement and formwork assembly. The device retains the conventional function of spacing form panels for consistent wall thickness while offering enhanced flexibility in use. The cones are selectively positionable along the snap tie and, depending on design and material, may remain embedded or be removed after curing. These capabilities streamline the construction process, improve the final concrete surface quality, and reduce the need for post-construction repair. The snap-tie cone device thereby addresses and overcomes limitations found in prior art.

[0035] Referring initially to the drawings, FIG. 1 illustrates an isometric view of a snap tie 10 and cone 18 of one potential embodiment of a snap-tie cone device of the present invention in accordance with the disclosed architecture. In one embodiment, the device 5 is comprised of at least one snap tie 10, as illustrated in FIG. 1. The snap tie 10 is primarily utilized in the construction of vertical concrete walls, including footings and foundation walls. The snap tie 10 is comprised of a length of high tensile wire 12. The wire 12 is designed to withstand the substantial forces exerted by fluid concrete during the setting process.

[0036] Each end of the snap tie 10 is preferably comprised of at least one integral head 14. The integral heads 14 serve as anchoring features to engage external formwork hardware. Positioned inward from the ends of the snap tie 10 are at least one inner head 16, which are spaced to align with the inner surfaces of the concrete forms. The integral heads 14 and inner heads 16 may be standard round configurations. In alternate embodiments, the heads 14 and / or 16 may be formed as hexagonal heads or a mixture of both types to accommodate different tooling or formwork engagement mechanisms.

[0037] Referring to FIG. 2, selected portions 20 of the snap tie 10 are configured to prevent twisting of the snap tie 10 during extraction after the concrete has cured. In one embodiment, the portions 20 are curved along a plane perpendicular to the longitudinal axis of the snap tie 10. In alternate embodiments, the portions 20 may be configured as flattened sections or may possess non-circular cross-sections, such as oval or polygonal geometries, to achieve anti-rotation functionality.

[0038] The device 5 may also be comprised of at least one cone 18 in sliding engagement with the snap tie 10, as seen in FIG. 1. The cone 18 is not permanently affixed, as in conventional snap tie systems. Instead, the cone 18 is selectively attachable and detachable from the snap tie 10 structure, as elaborated in FIGS. 4 through 6. In one embodiment, the cone 18 comprises a plastic structure with a frustoconical profile and an axial length such as, but not limited to, 1 inch. Alternative lengths may be employed based on formwork thickness or structural requirements. The cone 18 may be made from materials such as, but not limited to, plastics, metals, and composites, including polymers, fiberglass-reinforced plastic, stainless steel, and high-density polyethylene.

[0039] In certain embodiments, the cone 18 may be color-coded to indicate length, material composition, or structural rating, simplifying identification and selection during construction. In another embodiment, the cone 18 may include a textured or ribbed outer surface 19 to enhance grip during manual handling and removal.

[0040] In certain embodiments, the cone 18 may be manufactured using additive techniques, such as 3D printing. A fused deposition modeling (FDM) process may be employed to fabricate the cone 18 using thermoplastic filaments. Alternatively, stereolithography (SLA) or selective laser sintering (SLS) processes may be used to produce higher-resolution versions of the cone 18 from engineering-grade resins or nylon-based powders.

[0041] Referring to FIGS. 4 and 5, a cone 40 is shown as a hollow frustoconical body comprising an outer periphery 42. A cylindrical opening 44 extends centrally along the longitudinal axis of the cone 40, dimensioned to receive and retain a segment of the snap tie 10. A slit 46 extends longitudinally through the outer periphery 42, connecting the outer surface of the cone 40 to the cylindrical opening 44. The slit 46 is dimensioned to permit the cone 40 to be laterally engaged with the snap tie 10, allowing for a snap-on installation. In one configuration, the cone 40 is fabricated as a monolithic structure, excluding the cylindrical opening 44 and the slit 46.

[0042] In additional embodiments, the cone 40 may be equipped with integrated drainage channels 90 extending from the cylindrical opening 44 to the outer periphery 42. The drainage channels 90 are configured to allow moisture to escape from the interior region of the cone 40, reducing the likelihood of corrosion at the interface between the snap tie 10 and the surrounding concrete. The cone 40 may further include a peripheral flange 91 at the base to provide improved sealing against the formwork surface and to reduce concrete seepage.

[0043] Referring to FIG. 6, a second embodiment is presented in the form of a cone 70. The cone 70 includes an outer periphery 72, a central cylindrical opening 74, and a slit 76, which permits lateral installation onto the snap tie 10. A primary distinction from the cone 40 lies in the internal structure. More specifically, the cone 70 is not a monolithic solid. Instead, a plurality of reinforcing structures 78 extend longitudinally along the inner body of the cone 70. The reinforcing structures 78 are generally planar plastic elements positioned radially around the cylindrical opening 74 and between the outer periphery 72 and the slit 76. The reinforcing structures 78 define a series of internal cavities 80. The cavities 80 reduce the material volume and weight of the cone 70 while preserving structural rigidity and snap-on functionality.

[0044] In further variations, the cone 70 may incorporate embedded fiber reinforcements 92, such as but not limited to glass fibers, carbon fibers, or aramid fibers. The fiber reinforcements 92 are preferably molded within the reinforcing structures 78 and are configured to enhance the tensile strength and crack resistance of the cone 70 without significantly increasing its weight. The cone 70 may also include indexing marks and / or alignment ridges 71 along the outer periphery 72 to aid in consistent visual orientation relative to the form panels.

[0045] Additional embodiments may incorporate fire-resistant coatings 94 applied to the cones 18,40,70 to improve thermal durability in high-temperature environments or fire-rated construction applications. Further variations may include magnetic inserts 96 embedded within the cones 18,40,70 to provide temporary magnetic fixation to steel form panels, aiding in alignment and placement without requiring additional mechanical support. These features may be applied individually or in combination depending on the application, environmental conditions, and formwork system used.

[0046] During use, the snap tie 10 spans between opposing wall form panels. The cones 18, 40, and / or 70 are then selectively positioned against the inner surfaces of the wall forms. The cones 18,40,70 provide a surface stop for the wall forms, establishing the final concrete wall thickness. After the concrete has cured, the outer ends of the snap tie 10 are snapped off at the break-back point near the inner heads 16, allowing the formwork and the cones to be removed or left embedded, depending on the cone design and material.

[0047] The present invention is also comprised of a method of using 200 the device 5, as seen in FIG. 7. First, a device 5 is provided comprised of at least one snap tie 10, wherein the snap tie 10 is comprised of a high tensile wire 12 and at least one pair of integral heads 14 located at opposite ends of the wire 12 [Step 202]. Then, at least one pair of inner heads 16 is positioned inward from the ends of the snap tie 10 to align with the inner surfaces of the form panels used in concrete construction [Step 204]. Next, a cone 18, 40, or 70 is provided in sliding or snap-on engagement with the snap tie 10, wherein the cone 18, 40, or 70 includes a cylindrical opening to receive a segment of the snap tie 10 and a slit extending from the outer surface to the cylindrical opening [Step 206]. The cone 18, 40, or 70 is then laterally engaged with the snap tie 10 by aligning the slit with a portion of the snap tie 10 and applying manual pressure to snap the cone onto the snap tie 10 [Step 208]. Next, the cones 18, 40, or 70 are selectively positioned along the snap tie 10 such that the base of each cone abuts the inner surface of the formwork panel and the nose of each cone is retained under compression by the inner heads 16 [Step 210]. Then, the snap tie 10 with the installed cones is placed between opposing wall form panels, and the ends of the snap tie 10 are secured using formwork hardware in engagement with the integral heads 14 [Step 212]. Next, fresh concrete is poured into the cavity formed between the panels and around the snap tie 10 and cones 18, 40, or 70 [Step 214]. After the concrete has cured, the ends of the snap tie 10 are snapped off at the break-back points near the inner heads 16, allowing the formwork to be removed [Step 216]. Finally, the cones 18, 40, or 70 are either removed or left embedded within the cured concrete structure, depending on the cone design and material used [Step 218].

[0048] Certain terms are used throughout the following description and claims to refer to particular features or components. As one skilled in the art will appreciate, different persons may refer to the same feature or component by different names. This document does not intend to distinguish between components or features that differ in name but not structure or function. As used herein, “snap-tie cone device” and “device” are interchangeable and refer to the snap-tie cone device 100 of the present invention.

[0049] Notwithstanding the foregoing, the snap-tie cone device 100 of the present invention and its various components can be of any suitable size and configuration as is known in the art without affecting the overall concept of the invention, provided that they accomplish the above-stated objectives. One of ordinary skill in the art will appreciate that the size, configuration, and material of the snap-tie cone device 100 as shown in the FIGS. are for illustrative purposes only, and that many other sizes and shapes of the snap-tie cone device 100 are well within the scope of the present disclosure. Although the dimensions of the snap-tie cone device 100 are important design parameters for user convenience, the snap-tie cone device 100 may be of any size, shape, and / or configuration that ensures optimal performance during use and / or that suits the user’s needs and / or preferences.

[0050] Various modifications and additions can be made to the exemplary embodiments discussed without departing from the scope of the present invention. While the embodiments described above refer to particular features, the scope of this invention also includes embodiments having different combinations of features and embodiments that do not include all the described features. Accordingly, the scope of the present invention is intended to embrace all such alternatives, modifications, and variations as fall within the scope of the claims, together with all equivalents thereof.

[0051] What has been described above includes examples of the claimed subject matter. It is, of course, not possible to describe every conceivable combination of components or methodologies for purposes of describing the claimed subject matter, but one of ordinary skill in the art may recognize that many further combinations and permutations of the claimed subject matter are possible. Accordingly, the claimed subject matter is intended to embrace all such alterations, modifications, and variations that fall within the spirit and scope of the appended claims. Furthermore, to the extent that the term “includes” is used in either the detailed description or the claims, such term is intended to be inclusive in a manner similar to the term “comprising” as “comprising” is interpreted when employed as a transitional word in a claim.

Examples

Embodiment Construction

[0025] The innovation is now described with reference to the drawings, wherein like reference numerals are used to refer to like elements throughout. In the following description, for purposes of explanation, numerous specific details are set forth to provide a thorough understanding thereof. It may be evident, however, that the innovation can be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form to facilitate a description thereof. Various embodiments are discussed hereinafter. It should be noted that the figures are described only to facilitate the description of the embodiments. They are not intended as an exhaustive description of the invention and do not limit the scope of the invention. Additionally, an illustrated embodiment need not have all the aspects or advantages shown. Thus, in other embodiments, any of the features described herein from different embodiments may be combined.

[0026] ...

CROSS-REFERENCE TO RELATED APPLICATION

[0001] The present application claims priority to, and the benefit of, U.S. Provisional Application No. 63 / 749,789, which was filed on January 27, 2025, and is incorporated herein by reference in its entirety.FIELD OF THE INVENTION

[0002] The present invention relates generally to the field of concrete forms. More specifically, the present invention relates to a device and method for securing formwork in concrete wall construction. Accordingly, the present disclosure makes specific reference thereto. Nonetheless, it is to be appreciated that aspects of the present invention are also equally applicable to other like applications, devices, and methods of manufacture.BACKGROUND

[0003] In the field of concrete construction, particularly in the formation of vertical structural elements such as foundations and footings, maintaining accurate wall dimensions is essential for both structural integrity and aesthetic appearance. Traditional methods utilize snap ties fitted with permanently affixed cones to maintain form spacing during concrete pouring. These snap ties are typically inserted through formwork panels and resist the lateral force exerted by fluid concrete, thereby ensuring wall uniformity. However, practical limitations arise when rebar cages are installed prior to the placement of the snap ties. In these cases, the pre-installed cones cannot be maneuvered into position within the limited access openings of the plywood formwork. This limitation necessitates the removal of cones from the snap ties, which compromises the original design intent of maintaining dimensional accuracy. Additionally, the absence of cones during the concrete curing process results in irregular wall surfaces and unsealed holes that require extensive patching. These patching operations are labor-intensive and increase overall project costs. Furthermore, the lack of adaptable cone designs impedes the efficiency of construction workflows and the aesthetic quality of the final concrete surface.

[0004] Therefore, there exists a long-felt need in the art for a snap-tie cone device that permits cone installation after rebar placement within plywood formwork. There also exists a long-felt need in the art for a snap-tie cone device that facilitates consistent wall dimensioning without requiring permanent cone attachment. Moreover, there exists a long-felt need in the art for a snap-tie cone device that reduces labor and material costs associated with patching unfinished or exposed concrete voids.

[0005] The subject matter disclosed and claimed herein, in one embodiment thereof, comprises a snap-tie cone device. The invention is comprised of a device and method for securing formwork in concrete wall construction, comprising a snap tie formed from high tensile wire with integral and inner heads for anchoring and alignment within the form panels. The snap tie resists rotational forces through selected anti-twist portions and interacts with detachable cones designed to establish wall thickness and facilitate formwork removal. The cones are laterally installed onto the snap tie via a slit design enabling snap-on engagement. During use, cones are positioned against inner form surfaces and retained under compression, enabling concrete to be poured and cured while preserving dimensional stability. Following curing, the snap tie ends are broken off and the cones are either removed or retained within the concrete, based on construction requirements.

[0006] In this manner, the snap-tie cone device of the present invention accomplishes all the foregoing objectives and provides a cone that is laterally attachable to a snap tie through a slit or snap-on mechanism, enabling installation after rebar placement and formwork assembly. The device further maintains the traditional function of cones in spacing form panels to achieve uniform wall thickness while offering improved flexibility in use. The cones can be selectively positioned along the snap tie, and depending on the material and design, may be removed or left embedded after the concrete has cured. These features streamline the construction process, enhance the quality of the final concrete finish, and significantly reduce the need for post-construction repairs.SUMMARY

[0007] The following presents a simplified summary to provide a basic understanding of some aspects of the disclosed innovation. This summary is not an extensive overview, and it is not intended to identify key / critical elements or to delineate the scope thereof. Its sole purpose is to present some general concepts in a simplified form as a prelude to the more detailed description that is presented later.

[0008] The subject matter disclosed and claimed herein, in one embodiment thereof, comprises a snap-tie cone device. The device is comprised of at least one snap tie primarily used in constructing vertical concrete structures such as footings and foundation walls. The snap tie is formed from a high tensile wire configured to resist forces exerted by fluid concrete during curing. Each end of the snap tie is comprised of at least one integral head that anchors to external formwork hardware. At least one inner head is positioned inward from each end to align with the inner surfaces of the concrete forms. The integral and inner heads may feature standard round or hexagonal shapes to accommodate varying formwork systems. Selected sections of the snap tie are configured to prevent twisting during removal after concrete curing. These anti-rotation features may include curved, flattened, or non-circular cross-sectional geometries such as oval or polygonal shapes.

[0009] The device is further comprised of at least one cone in sliding or snap-on engagement with the snap tie. The cone is not permanently affixed and is selectively attachable. The cone may have a frustoconical profile and be fabricated from plastic, metal, or composite materials, with length and composition selectable based on structural or formwork requirements. Certain embodiments of the cone may incorporate color-coding for easy identification or a textured outer surface to improve manual handling. The cone may be manufactured using additive manufacturing methods such as fused deposition modeling, stereolithography, or selective laser sintering, utilizing thermoplastics or engineering-grade resins.

[0010] One cone embodiment is comprised of a hollow frustoconical body with a cylindrical opening to receive the snap tie and a longitudinal slit for lateral snap-on engagement. Drainage channels may be included to facilitate moisture escape, and a peripheral flange may be provided for improved sealing against formwork and to reduce seepage.

[0011] An alternative cone embodiment features an internal structure with longitudinal reinforcing elements and cavities to reduce weight while maintaining structural integrity. This embodiment may also include embedded fiber reinforcements to enhance tensile strength and crack resistance, along with external indexing marks for alignment.

[0012] Additional features applicable to any cone embodiment may include fire-resistant coatings and magnetic inserts for temporary fixation to steel form panels. These features may be used individually or in combination to suit specific construction environments.

[0013] During operation, the snap tie spans opposing wall form panels, with cones positioned to establish wall thickness. After curing, the outer ends of the snap tie are broken off near the inner heads, and the formwork and cones are either removed or left in place, based on the cone design and material.

[0014] The invention also includes a method for using the device. The method involves providing a snap tie with integral and inner heads, laterally attaching a cone via a slit to the snap tie, positioning the cones against formwork panels, securing the assembly, pouring concrete, allowing curing, snapping off the snap tie ends, and optionally removing or leaving the cones embedded in the cured structure.

[0015] Accordingly, the snap-tie cone device of the present invention is particularly advantageous as it provides a cone that is laterally attachable to a snap tie through a slit or snap-on mechanism, enabling installation after rebar placement and formwork assembly. The device further maintains the traditional function of cones in spacing form panels to achieve uniform wall thickness while offering improved flexibility in use. The cones can be selectively positioned along the snap tie, and depending on the material and design, may be removed or left embedded after the concrete has cured. These features streamline the construction process, enhance the quality of the final concrete finish, and significantly reduce the need for post-construction repairs. In this manner, the snap-tie cone device overcomes the limitations of existing cones and methods of use known in the art.

[0016] To the accomplishment of the foregoing and related ends, certain illustrative aspects of the disclosed innovation are described herein in connection with the following description and the annexed drawings. These aspects are indicative, however, of but a few of the various ways in which the principles disclosed herein can be employed and are intended to include all such aspects and their equivalents. Other advantages and novel features will become apparent from the following detailed description when considered in conjunction with the drawings.BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The description refers to provided drawings in which similar reference characters refer to similar parts throughout the different views, and in which:

[0018] FIG. 1 illustrates an isometric view of a snap tie and cone of one potential embodiment of a snap-tie cone device of the present invention in accordance with the disclosed architecture;

[0019] FIG. 2 illustrates an expanded view of a central portion of a snap tie of one potential embodiment of a snap-tie cone device of the present invention in accordance with the disclosed architecture;

[0020] FIG. 3 illustrates an expanded view of an end portion of a snap tie of one potential embodiment of a snap-tie cone device of the present invention in accordance with the disclosed architecture;

[0021] FIG. 4 illustrates an isometric view of a cone of one potential embodiment of a snap-tie cone device of the present invention in accordance with the disclosed architecture;

[0022] FIG. 5 illustrates an isometric view of a cone of one potential embodiment of a snap-tie cone device of the present invention in accordance with the disclosed architecture;

[0023] FIG. 6 illustrates an isometric view of a cone of one potential embodiment of a snap-tie cone device of the present invention in accordance with the disclosed architecture; and

[0024] FIG. 7 illustrates a flowchart of a method of using one potential embodiment of a snap-tie cone device of the present invention in accordance with the disclosed architecture. DETAILED DESCRIPTION

[0025] The innovation is now described with reference to the drawings, wherein like reference numerals are used to refer to like elements throughout. In the following description, for purposes of explanation, numerous specific details are set forth to provide a thorough understanding thereof. It may be evident, however, that the innovation can be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form to facilitate a description thereof. Various embodiments are discussed hereinafter. It should be noted that the figures are described only to facilitate the description of the embodiments. They are not intended as an exhaustive description of the invention and do not limit the scope of the invention. Additionally, an illustrated embodiment need not have all the aspects or advantages shown. Thus, in other embodiments, any of the features described herein from different embodiments may be combined.

[0026] As noted above, there exists a long-felt need in the art for a snap-tie cone device that permits cone installation after rebar placement within plywood formwork. There also exists a long-felt need in the art for a snap-tie cone device that facilitates consistent wall dimensioning without requiring permanent cone attachment. Moreover, there exists a long-felt need in the art for a snap-tie cone device that reduces labor and material costs associated with patching unfinished or exposed concrete voids.

[0027] The present invention, in one exemplary embodiment, is comprised of a snap-tie cone device. The device is comprised of at least one snap tie primarily utilized in the construction of vertical concrete structures such as footings and foundation walls. The snap tie is formed from high tensile wire configured to withstand the forces exerted by fluid concrete during curing. Each end of the snap tie includes at least one integral head that engages with external formwork hardware. At least one inner head is positioned inward from each end to align with the inner surfaces of the concrete forms. The integral and inner heads may be formed in standard round or hexagonal shapes to accommodate different formwork configurations. Certain sections of the snap tie are shaped to prevent rotation during removal after curing, using features such as curved, flattened, or non-circular geometries, including oval or polygonal cross-sections.

[0028] The device is further comprised of at least one cone that engages the snap tie in a sliding or snap-on manner. The cone is selectively attachable and not permanently fixed. The cone may have a frustoconical shape and may be fabricated from plastic, metal, or composite materials, with dimensions and materials chosen based on specific structural or formwork needs. In some embodiments, the cone may include color-coding for identification or a textured exterior to assist with manual handling. Additive manufacturing methods such as fused deposition modeling, stereolithography, or selective laser sintering may be used to fabricate the cone using thermoplastics or engineering-grade resins.

[0029] One embodiment of the cone is comprised of a hollow frustoconical body with a cylindrical opening configured to receive the snap tie and a longitudinal slit for lateral snap-on engagement. The cone may include drainage channels to allow moisture to escape and a peripheral flange at the base to enhance sealing against the formwork and reduce concrete seepage.

[0030] An alternative cone embodiment includes an internal structure with longitudinal reinforcing elements and cavities to reduce weight while maintaining rigidity. This embodiment may also feature embedded fiber reinforcements to increase tensile strength and crack resistance, along with indexing marks on the outer surface to assist with alignment.

[0031] Additional features applicable to any cone embodiment may include fire-resistant coatings and magnetic inserts to temporarily fix the cone to steel form panels. These features may be applied individually or in combination to accommodate various construction environments.

[0032] During use, the snap tie extends between opposing wall form panels, and cones are positioned to define the final wall thickness. After the concrete has cured, the ends of the snap tie are broken off near the inner heads, and the formwork and cones are either removed or left embedded, depending on the cone material and design.

[0033] The invention further includes a method of using the device. The method comprises providing a snap tie with integral and inner heads, laterally attaching a cone to the snap tie using a slit, positioning the cones against the formwork panels, securing the assembly, pouring concrete, allowing it to cure, breaking off the ends of the snap tie, and either removing or leaving the cones in the concrete structure.

[0034] Therefore, the device is particularly advantageous by enabling lateral attachment of the cone through a slit or snap-on mechanism, allowing installation after rebar placement and formwork assembly. The device retains the conventional function of spacing form panels for consistent wall thickness while offering enhanced flexibility in use. The cones are selectively positionable along the snap tie and, depending on design and material, may remain embedded or be removed after curing. These capabilities streamline the construction process, improve the final concrete surface quality, and reduce the need for post-construction repair. The snap-tie cone device thereby addresses and overcomes limitations found in prior art.

[0035] Referring initially to the drawings, FIG. 1 illustrates an isometric view of a snap tie 10 and cone 18 of one potential embodiment of a snap-tie cone device of the present invention in accordance with the disclosed architecture. In one embodiment, the device 5 is comprised of at least one snap tie 10, as illustrated in FIG. 1. The snap tie 10 is primarily utilized in the construction of vertical concrete walls, including footings and foundation walls. The snap tie 10 is comprised of a length of high tensile wire 12. The wire 12 is designed to withstand the substantial forces exerted by fluid concrete during the setting process.

[0036] Each end of the snap tie 10 is preferably comprised of at least one integral head 14. The integral heads 14 serve as anchoring features to engage external formwork hardware. Positioned inward from the ends of the snap tie 10 are at least one inner head 16, which are spaced to align with the inner surfaces of the concrete forms. The integral heads 14 and inner heads 16 may be standard round configurations. In alternate embodiments, the heads 14 and / or 16 may be formed as hexagonal heads or a mixture of both types to accommodate different tooling or formwork engagement mechanisms.

[0037] Referring to FIG. 2, selected portions 20 of the snap tie 10 are configured to prevent twisting of the snap tie 10 during extraction after the concrete has cured. In one embodiment, the portions 20 are curved along a plane perpendicular to the longitudinal axis of the snap tie 10. In alternate embodiments, the portions 20 may be configured as flattened sections or may possess non-circular cross-sections, such as oval or polygonal geometries, to achieve anti-rotation functionality.

[0038] The device 5 may also be comprised of at least one cone 18 in sliding engagement with the snap tie 10, as seen in FIG. 1. The cone 18 is not permanently affixed, as in conventional snap tie systems. Instead, the cone 18 is selectively attachable and detachable from the snap tie 10 structure, as elaborated in FIGS. 4 through 6. In one embodiment, the cone 18 comprises a plastic structure with a frustoconical profile and an axial length such as, but not limited to, 1 inch. Alternative lengths may be employed based on formwork thickness or structural requirements. The cone 18 may be made from materials such as, but not limited to, plastics, metals, and composites, including polymers, fiberglass-reinforced plastic, stainless steel, and high-density polyethylene.

[0039] In certain embodiments, the cone 18 may be color-coded to indicate length, material composition, or structural rating, simplifying identification and selection during construction. In another embodiment, the cone 18 may include a textured or ribbed outer surface 19 to enhance grip during manual handling and removal.

[0040] In certain embodiments, the cone 18 may be manufactured using additive techniques, such as 3D printing. A fused deposition modeling (FDM) process may be employed to fabricate the cone 18 using thermoplastic filaments. Alternatively, stereolithography (SLA) or selective laser sintering (SLS) processes may be used to produce higher-resolution versions of the cone 18 from engineering-grade resins or nylon-based powders.

[0041] Referring to FIGS. 4 and 5, a cone 40 is shown as a hollow frustoconical body comprising an outer periphery 42. A cylindrical opening 44 extends centrally along the longitudinal axis of the cone 40, dimensioned to receive and retain a segment of the snap tie 10. A slit 46 extends longitudinally through the outer periphery 42, connecting the outer surface of the cone 40 to the cylindrical opening 44. The slit 46 is dimensioned to permit the cone 40 to be laterally engaged with the snap tie 10, allowing for a snap-on installation. In one configuration, the cone 40 is fabricated as a monolithic structure, excluding the cylindrical opening 44 and the slit 46.

[0042] In additional embodiments, the cone 40 may be equipped with integrated drainage channels 90 extending from the cylindrical opening 44 to the outer periphery 42. The drainage channels 90 are configured to allow moisture to escape from the interior region of the cone 40, reducing the likelihood of corrosion at the interface between the snap tie 10 and the surrounding concrete. The cone 40 may further include a peripheral flange 91 at the base to provide improved sealing against the formwork surface and to reduce concrete seepage.

[0043] Referring to FIG. 6, a second embodiment is presented in the form of a cone 70. The cone 70 includes an outer periphery 72, a central cylindrical opening 74, and a slit 76, which permits lateral installation onto the snap tie 10. A primary distinction from the cone 40 lies in the internal structure. More specifically, the cone 70 is not a monolithic solid. Instead, a plurality of reinforcing structures 78 extend longitudinally along the inner body of the cone 70. The reinforcing structures 78 are generally planar plastic elements positioned radially around the cylindrical opening 74 and between the outer periphery 72 and the slit 76. The reinforcing structures 78 define a series of internal cavities 80. The cavities 80 reduce the material volume and weight of the cone 70 while preserving structural rigidity and snap-on functionality.

[0044] In further variations, the cone 70 may incorporate embedded fiber reinforcements 92, such as but not limited to glass fibers, carbon fibers, or aramid fibers. The fiber reinforcements 92 are preferably molded within the reinforcing structures 78 and are configured to enhance the tensile strength and crack resistance of the cone 70 without significantly increasing its weight. The cone 70 may also include indexing marks and / or alignment ridges 71 along the outer periphery 72 to aid in consistent visual orientation relative to the form panels.

[0045] Additional embodiments may incorporate fire-resistant coatings 94 applied to the cones 18,40,70 to improve thermal durability in high-temperature environments or fire-rated construction applications. Further variations may include magnetic inserts 96 embedded within the cones 18,40,70 to provide temporary magnetic fixation to steel form panels, aiding in alignment and placement without requiring additional mechanical support. These features may be applied individually or in combination depending on the application, environmental conditions, and formwork system used.

[0046] During use, the snap tie 10 spans between opposing wall form panels. The cones 18, 40, and / or 70 are then selectively positioned against the inner surfaces of the wall forms. The cones 18,40,70 provide a surface stop for the wall forms, establishing the final concrete wall thickness. After the concrete has cured, the outer ends of the snap tie 10 are snapped off at the break-back point near the inner heads 16, allowing the formwork and the cones to be removed or left embedded, depending on the cone design and material.

[0047] The present invention is also comprised of a method of using 200 the device 5, as seen in FIG. 7. First, a device 5 is provided comprised of at least one snap tie 10, wherein the snap tie 10 is comprised of a high tensile wire 12 and at least one pair of integral heads 14 located at opposite ends of the wire 12 [Step 202]. Then, at least one pair of inner heads 16 is positioned inward from the ends of the snap tie 10 to align with the inner surfaces of the form panels used in concrete construction [Step 204]. Next, a cone 18, 40, or 70 is provided in sliding or snap-on engagement with the snap tie 10, wherein the cone 18, 40, or 70 includes a cylindrical opening to receive a segment of the snap tie 10 and a slit extending from the outer surface to the cylindrical opening [Step 206]. The cone 18, 40, or 70 is then laterally engaged with the snap tie 10 by aligning the slit with a portion of the snap tie 10 and applying manual pressure to snap the cone onto the snap tie 10 [Step 208]. Next, the cones 18, 40, or 70 are selectively positioned along the snap tie 10 such that the base of each cone abuts the inner surface of the formwork panel and the nose of each cone is retained under compression by the inner heads 16 [Step 210]. Then, the snap tie 10 with the installed cones is placed between opposing wall form panels, and the ends of the snap tie 10 are secured using formwork hardware in engagement with the integral heads 14 [Step 212]. Next, fresh concrete is poured into the cavity formed between the panels and around the snap tie 10 and cones 18, 40, or 70 [Step 214]. After the concrete has cured, the ends of the snap tie 10 are snapped off at the break-back points near the inner heads 16, allowing the formwork to be removed [Step 216]. Finally, the cones 18, 40, or 70 are either removed or left embedded within the cured concrete structure, depending on the cone design and material used [Step 218].

[0048] Certain terms are used throughout the following description and claims to refer to particular features or components. As one skilled in the art will appreciate, different persons may refer to the same feature or component by different names. This document does not intend to distinguish between components or features that differ in name but not structure or function. As used herein, “snap-tie cone device” and “device” are interchangeable and refer to the snap-tie cone device 100 of the present invention.

[0049] Notwithstanding the foregoing, the snap-tie cone device 100 of the present invention and its various components can be of any suitable size and configuration as is known in the art without affecting the overall concept of the invention, provided that they accomplish the above-stated objectives. One of ordinary skill in the art will appreciate that the size, configuration, and material of the snap-tie cone device 100 as shown in the FIGS. are for illustrative purposes only, and that many other sizes and shapes of the snap-tie cone device 100 are well within the scope of the present disclosure. Although the dimensions of the snap-tie cone device 100 are important design parameters for user convenience, the snap-tie cone device 100 may be of any size, shape, and / or configuration that ensures optimal performance during use and / or that suits the user’s needs and / or preferences.

[0050] Various modifications and additions can be made to the exemplary embodiments discussed without departing from the scope of the present invention. While the embodiments described above refer to particular features, the scope of this invention also includes embodiments having different combinations of features and embodiments that do not include all the described features. Accordingly, the scope of the present invention is intended to embrace all such alternatives, modifications, and variations as fall within the scope of the claims, together with all equivalents thereof.

[0051] What has been described above includes examples of the claimed subject matter. It is, of course, not possible to describe every conceivable combination of components or methodologies for purposes of describing the claimed subject matter, but one of ordinary skill in the art may recognize that many further combinations and permutations of the claimed subject matter are possible. Accordingly, the claimed subject matter is intended to embrace all such alterations, modifications, and variations that fall within the spirit and scope of the appended claims. Furthermore, to the extent that the term “includes” is used in either the detailed description or the claims, such term is intended to be inclusive in a manner similar to the term “comprising” as “comprising” is interpreted when employed as a transitional word in a claim.

Examples

Embodiment Construction

[0025] The innovation is now described with reference to the drawings, wherein like reference numerals are used to refer to like elements throughout. In the following description, for purposes of explanation, numerous specific details are set forth to provide a thorough understanding thereof. It may be evident, however, that the innovation can be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form to facilitate a description thereof. Various embodiments are discussed hereinafter. It should be noted that the figures are described only to facilitate the description of the embodiments. They are not intended as an exhaustive description of the invention and do not limit the scope of the invention. Additionally, an illustrated embodiment need not have all the aspects or advantages shown. Thus, in other embodiments, any of the features described herein from different embodiments may be combined.

[0026] ...

Claims

1. A snap-tie cone device comprising:a cone comprising a hollow frustoconical body having an opening dimensioned to receive a snap tie and a longitudinal slit extending from an outer surface of the cone to the opening.

2. The snap-tie cone device of claim 1, wherein the cone is comprised of a peripheral flange.

3. The snap-tie cone device of claim 1, wherein the outer surface of the cone is comprised of a textured outer surface of a ribbed outer surface.

4. The snap-tie cone device of claim 1, wherein the cone is comprised of a drainage channel.

5. The snap-tie cone device of claim 1, wherein the cone is comprised of a reinforcing structure extending longitudinally between the opening and the outer surface.

6. The snap-tie cone device of claim 5, wherein the cone is comprised of an embedded fiber reinforcement within the reinforcing structure.

7. The snap-tie cone device of claim 5, wherein the cone is comprised of an alignment ridge or an indexing mark.

8. A snap-tie cone device comprising:a snap tie comprising an integral head and an inner head positioned inward from an end of the snap tie; anda cone in sliding or snap-on engagement with the snap tie, the cone comprising a hollow frustoconical body having an opening dimensioned to receive the snap tie and a longitudinal slit extending from an outer surface of the cone to the opening.

9. The snap-tie cone device of claim 8, wherein the inner head and the integral head are round.

10. The snap-tie cone device of claim 8, wherein the inner head and the integral head are hexagonal.

11. The snap-tie cone device of claim 8, wherein the snap tie is comprised of a portion that is curved.

12. The snap-tie cone device of claim 8, wherein the snap tie is comprised of a portion that is non-circular.

13. The snap-tie cone device of claim 8, wherein the snap tie is comprised of a portion that is flat.

14. The snap-tie cone device of claim 8, wherein the cone removably attaches to the snap-tie.

15. The snap-tie cone device of claim 8, wherein the cone is comprised of a peripheral flange.

16. The snap-tie cone device of claim 8, wherein the outer surface of the cone is comprised of a textured outer surface of a ribbed outer surface.

17. The snap-tie cone device of claim 8, wherein the cone is comprised of a drainage channel.

18. The snap-tie cone device of claim 8, wherein the cone is comprised of a reinforcing structure extending longitudinally between the opening and the outer surface.

19. The snap-tie cone device of claim 18, wherein the cone is comprised of an embedded fiber reinforcement within the reinforcing structure.

20. A method of using a snap-tie cone device, the method comprising the following steps:providing a snap-tie cone device comprised of an integral head and an inner head inward from an end of the snap tie, and providing a cone in sliding or snap-on engagement with the snap tie, the cone comprising an opening and a slit extending from an outer surface to the opening;engaging the cone with the snap tie laterally by aligning the slit with a portion of the snap tie and applying manual pressure to snap the cone onto the snap tie;positioning the cone such that a base of the cone abuts an inner surface of a form panel and a nose of the cone is retained under compression by the inner head;placing the snap tie with the cone installed between a pair of opposing wall form panels and securing the end of the snap tie using a formwork hardware in engagement with the integral head;pouring a concrete into a cavity formed between the pair of opposing wall form panels and around the snap tie and cone;snapping off the end of the snap tie at break-back points near the inner head after the concrete has cured; andremoving or leaving the cone embedded within the concrete once cured.

Images