EP2348914A1

EP2348914A1 - Three-dimensional burr fastener

Info

Publication number: EP2348914A1
Application number: EP09760644A
Authority: EP
Inventors: Jaros aw WARDAS
Original assignee: 3D Studium Form Przemyslowych I Reklamowych Jaroslaw Wardas
Current assignee: 3D Studium Form Przemyslowych I Reklamowych Jaroslaw Wardas
Priority date: 2008-10-30
Filing date: 2009-10-22
Publication date: 2011-08-03
Anticipated expiration: 2029-10-22
Also published as: EP2348914B1; WO2010050831A1; PL386387A1; ES2416954T3; PL2348914T3

Abstract

The object of invention is a three-dimensional burr fastener that can be used especially to form three-dimensional fastening elements. According to the invention, the three-dimensional burr fastener is characterised in that it consists of not less than three elements (4) joined together in a common base (3), each comprising a head (1) and a stem (2), where the diameter of the stem (2) is smaller than the diameter of the head (1) and/or the perimeter of the stem (2) is smaller than the perimeter of the head (1).

Description

THREE-DIMENSIONAL BURR FASTENER

The object of invention is a three-dimensional burr fastener that can be used especially to form three-dimensional fastening elements.

The hitherto known burr fasteners are in the form of flat strips which surfaces are covered with miniature hooks. Placing two strips one upon another enables interlocking of the hooks, thus forming a closure that is easy to do and undo. This solution is applied in production of clothes, sports equipment and in other everyday articles.

The purpose of the invention is to develop an inexpensive three- dimensional burr fastener of a simple design that owing to its design is able to form various detachable three-dimensional forms. According to the invention, the three-dimensional burr fastener consists of not less than three elements joined together in a common base, each comprising a head and a stem, where the diameter of the stem is smaller than the diameter of the head and/or the perimeter of the stem is smaller than the perimeter of the head. The fastener head is in the shape of a solid figure, preferably resembling a half-globe or a complex solid figure. The fastener stem is in the shape of a solid figure, preferably of a cylinder shape, and its perimeter in the "x-z" plane perpendicular to the straight axis going through the head, the stem and the base of the burr fastener is smaller than the perimeter of the head in the "x-z" plane and/or its diameter in the "x-z" plane perpendicular to the axis going through the head, the stem and the base of the. burr fastener is smaller than the diameter of the head in the "x-z" plane. The base of the burr fastener has its diameter and/or perimeter smaller, equal to or bigger than the diameter and/or perimeter of the stem and its shape is a three-dimensional form. The ratio of stem length to stem diameter is equal to, higher, lower or almost equal to zero. The axes of burr fastener stems attached to the base do or do not meet in the same point of the base. The axis of the stem directed to the base is a curve or a straight line or a broken line. The head and/or the stem of the burr fastener and/or the base are solids and/or opened and/or closed openwork figures. The head, the stem and the base are made of materials of different physical properties and at least one of those is elastic and/or flexible. At least one joint between the head, the stem and the base of the burr fastener is flexible and/or elastic. The three- dimensional burr fastener is joined together with other three-dimensional burr fasteners by means of the heads and the stems, by the heads getting stuck between and/or catching the heads and/or the heads getting stuck between and/or catching the stems and/or the stems getting stuck between and/or catching the stems. The object of invention has been shown in the example of embodiment in a drawing, where Fig. 1 shows an axonometric view of the three- dimensional burr fastener, Fig. 2 - shows an axonometric view of the three- dimensional burr fastener formed of several elements in a common base, Fig. 3 - shows an axonometric view of the way the burr fasteners are joined by the head getting caught between two stems, Fig. 4 - shows an axonometric view of the way the burr fasteners are joined by the stems getting caught between the stems, Fig. 5 - shows an axonometric view of the way the burr fasteners are joined by the head that is stuck between the heads, Fig. 6 - shows an axonometric view of the burr fastener element consisting of the head, the stem and the base of the perimeter and the area of section bigger than the perimeter of the head and bigger than the perimeter of the stem in the "x-z" plane perpendicular to the straight axis going through the head, the stem and the base, Fig. 7 - shows an axonometric view of the burr fastener element consisting of the head, the stem and the base of the perimeter and the area of section smaller than the perimeter of the head and bigger than the perimeter of the stem in the "x-z" plane perpendicular to the straight axis going through the head, the stem and the base, Fig. 8 - shows an axonometric view of the burr fastener element consisting of the head, the stem and the base of the perimeter and the area of section equal to the perimeter of the stem and smaller than the perimeter of the head in the "x-z" plane perpendicular to the straight axis going through the head, the stem and the base, Fig. 9 - shows an axonometric view of the burr fastener element consisting of the head and the stem, which base is the base of the burr fastener element, Fig. 10 - shows an axonometric view of an openwork head and an openwork stem, Fig. 11 - shows an axonometric view of an openwork head and a monolithic stem, Fig. 12 - shows an axonometric view of a three-dimensional burr fastener form made of three- dimensional burr fastener elements joined together in a common base, Fig. 13 - shows an axonometric view of two burr fasteners with mushroom heads joined together, Fig. 14 - shows an axonometric view of two burr fasteners with ball heads joined together, Fig. 15 - shows an axonometric view of two burr fasteners with disk heads joined together, Fig. 16 - shows an axonometric view of two burr fasteners with disk and mushroom heads joined together, Fig. 17 - shows an axonometric view of the burr fastener in the form of a chain with its outline shape similar to a cylinder, Fig. 18 - shows an axonometric view of one of the three-dimensional burr fastener forms made of a number of three- dimensional burr fastener elements with its outline shape similar to a half-globe, Fig. 19 - shows an axonometric view of the burr fastener element where the head and the base are ball-shaped and joined to the stem within boundaries clearly marked out, Fig. 20 - shows an axonometric view of the burr fastener element where the head and the base are drop-shaped and joined to the stem within boundaries marked out indistinctly, Fig. 21 - shows an axonometric view of the burr fastener element where the head is mushroom-shaped and joined to the ball-shaped base through the stem within boundaries clearly marked out, Fig. 22 - shows an axonometric view of the burr fastener element where the head is mushroom-shaped and joined to the drop-shaped base through the stem within boundaries marked out indistinctly, Fig. 23 - shows a cross-section of the sample burr fastener element where the head is bush-shaped and joined to the ball-shaped base through the stem, Fig. 24 - shows a cross-section of the sample burr fastener element where the head is bush-shaped and joined to the ball-shaped base through the stem, Fig. 25 - shows a cross-section of the sample burr fastener element with different heads, Fig. 26 - shows a cross- section of the sample burr fastener element with identical heads, Fig. 27 - shows a cross-section of a burr fastener part consisting of two heads and two stems joined together in a common base, and Fig. 28 - shows a top view of the burr fastener part shown in Fig. 27. The three-dimensional burr fastener, as shown in the drawing, consists of the heads 1 positioned on the stems 2 that are seated in the base 3. The head

1, the stem 2 and the base 3 can take on different geometric forms and make the element 4 of the three-dimensional burr fastener that has been shown in Fig. 6, Fig. 7, Fig. 8, Fig. 9, Fig. 19, Fig. 20, Fig. 21 , Fig. 22, Fig. 23 and Fig. 24. Burr fastener options consisting of a larger number of heads 1 and stems 2 joined together in a common base 3 have been shown in Fig. 2, Fig. 12, Fig. 17, Fig. 18, whereas the three-dimensional burr fasteners joined together have been presented in Fig. 3, Fig. 4, Fig. 5, Fig. 13, Fig. 14, Fig. 15, Fig. 16. Making the joint of at least two three-dimensional burr fasteners possible requires meeting of conditions defined by mathematical dependencies that have been shown in Fig. 27 and Fig. 28, which has demonstrated the axis 5 going through the shortest distance between the two nearest heads 1_. And thus, when identical three-dimensional burr fasteners are joined, as shown in Fig. 3, the condition must be met that d<b and/or c<b and/or e-i≥f and/or f<b, and/or when three-dimensional burr fasteners are joined, as shown in Fig. 4, the condition must be met that c>f and/or g+i≥f and/or a<b, and/or when three-dimensional burr fasteners are joined, as shown in Fig. 5, the condition must be met that b>a and/or g+i≥i+h. Whereas identical three-dimensional burr fasteners cannot be joined in cases when a>b and/or e>b and/or d>b and/or g+i<h and/or b<f. Moreover, "a" dimension is a distance between the heads 1 in the axis 5, "b" dimension is the width of the head in the axis 5, "c" dimension is a distance between the stems 2 in the place where the heads 1 are joined to the stems in the axis 5, "d" dimension is a distance between the stems 2 in the place where the stems 2 are joined to the base 3 in the axis 5, "e" dimension is a distance between the base 3 and the widest "b" dimension of the head 1, "f dimension is the thickness of the stem 2 in the axis 5, "g" dimension is the height of the stem

2, "h" dimension is a distance from the widest "b" dimension of the head 1. to the top of the head 1, and "i" dimension is a distance from the place where the stem 2 is joined to the head 1 to the widest "b" dimension of the head 1.

The three-dimensional burr fastener can also be fitted with bush-shaped heads that have fastening capabilities themselves. Such a case has been shown in Fig. 26, where the bush-shaped heads 1. are in the form as shown in Fig. 24. Owing to such a shape of the heads 1_, one can form large three- dimensional burr fasteners that can be joined to smaller ones. The three- dimensional burr fastener, as shown in Fig. 25, can also consist of different heads 1., made of the elements 4 arranged as in Fig. 25, which enables obtaining even stronger joints between the three-dimensional burr fasteners.

The three-dimensional burr fastener can be used as a structural component of reinforcement of reinforced-concrete construction components that have been made so far as openwork three-dimensional structures made of long reinforcement bars of various cross-sections and diameters. Bars are joined together with stirrups to make a beam-shaped three-dimensional form. Stirrups are most often in the shape of a closed or not closed rectangular and they are joined to bars detachably using tie wire or permanently by welding. The disadvantage of the known concrete reinforcement is high labour demand connected with its construction resulting from the fact that when tie wire is used, many knots must be tied, and when the welding methods is applied, many spot welds must be made. Labour demand connected with construction of concrete reinforcement has also high impact on the unit cost of reinforcement that grows additionally due to the fact that highly competent technical staff must be employed.

The three-dimensional burr fastener can also be used as a block for construction of three-dimensional forms, such as coverings for playgrounds, ski landing areas, blocks for children and flowerpot structures or filling to protect transported products.

Claims

Patent claims

2. A three-dimensional burr fastener, characterised in that it consists of not less than three elements (4) joined together in a common base (3), each comprising a head (T) and a stem (2), where the diameter of the stem (2) is smaller than the diameter of the head (V) and/or the perimeter of the stem (2) is smaller than the perimeter of the head (V).

3. The burr fastener according to claim 1 , characterised in that the head (V) is in the shape of a solid figure, preferably resembling a half-globe or a complex solid figure.

3. The burr fastener according to claim 1 , characterised in that the stem (2) is in the shape of a solid figure, preferably of a cylinder shape, and its perimeter in the "x-z" plane perpendicular to the straight axis going through the head (1), the stem (2) and the base (3) is smaller than the perimeter of the head (1) in the "x-z" plane and/or its diameter in the "x-z" plane perpendicular to the axis going through the head (1), the stem (2) and the base (3) is smaller than the perimeter of the head (V) in the "x-z" plane and/or its area of section in the "x-z" plane perpendicular to the axis going through the head (V), the stem (2) and the base (3) is smaller than the area of head (1) section in the "x-z" plane.

4. The burr fastener according to claim 1 , characterised in that the common base (3) has its diameter and/or perimeter smaller, equal to or bigger than the diameter and/or perimeter of the stem (2) and its shape is a three-dimensional form.

5. The burr fastener according to claim 1 or 3, characterised in that the ratio of stem (2) length to stem (2) diameter is equal to, higher, lower or almost equal to zero.

6. The burr fastener according to claim 1 or 3 or 5, characterised in that the axes of the stems (2) do not meet in one point in the volume of the base (3).

7. The burr fastener according to claim 1 or 3 or 5, characterised in that the axes of the stems (2) meet in one point in the volume of the base (3).

8. The burr fastener according to claim 1 or 3 or 5, characterised in that the axis of the stem (2) directed to the base (3) is a curve or a straight line or a broken line.

9. The burr fastener according to claim 1 , characterised in that the head (V) and/or the stem (2) of the element (4) and/or the base (3) are solids and/or opened and/or closed openwork figures.

10. The burr fastener according to claim 1 , characterised in that the head (i), the stem (2), the base (3) are made of materials of different or identical physical properties and at least one of those is elastic and/or flexible.

11. The burr fastener according to claim 1 , characterised in that at least one joint between the head (1), the stem (2), the base (3) of the element (4) is flexible and/or elastic.

12. The burr fastener according to claim 1 , characterised in that it is joined together with other three-dimensional burr fasteners by means of the heads (1) and the stems (2), by the heads (!) getting stuck between and/or catching the heads (1) and/or the heads (!) getting stuck between and/or catching the stems (2) and/or the stems (2) getting stuck between and/or catching the stems (2).