Abstract
The invention relates to a pocket for a garment, in particular to a pocket comprising a rear side configured to be turned towards the body of a person and a front side which is connected to the rear side and configured to face away from the body of a person. The invention also relates to a garment provided with at least one pocket according to the invention.
Claims
1. Pocket for a garment, comprising: a rear side configured to be turned towards the body of a person, and a front side which is connected to the rear side and configured to face away from the body of a person, wherein the rear side is at least partly made of a radio-wave-reflecting first textile, which first textile comprises at least one metal-comprising thread, and wherein the front side is at least partly made of a radio-wave-reflecting second textile, which second textile comprises at least one metal-comprising thread.
2. Pocket according to claim 1, wherein the rear side is substantially completely made of the radio-wave-reflecting first textile.
3. Pocket according to claim 1, wherein the front side is partly made of the radio-wave-reflecting second textile, and wherein at least one other part of the front side is made of a material which is substantially permeable to radio waves, in particular a third textile.
4. Pocket according to claim 3, wherein the material which is substantially permeable to radio waves is substantially free from metal-comprising threads.
5. Pocket according to claim 3, wherein the second textile and the material which is substantially permeable to radio waves partly overlap one another.
6. Pocket according to claim 3, wherein the second textile and the material which is substantially permeable to radio waves are connected to one another, preferably stitched together.
7. Pocket according to claim 3, wherein at least a part of the material which is substantially permeable to radio waves is situated at a distance from the second textile.
8. Pocket according to claim 3, wherein the second textile forms at least a part of a peripheral edge of the front side of the pocket.
9. Pocket according to claim 8, wherein the peripheral edge of the front side of the pocket comprises an inner lateral edge, and wherein the second textile forms at least a part of the inner lateral edge.
10. Pocket according to claim 8, wherein the peripheral edge of the front side of the pocket comprises a bottom lateral edge, and wherein the second textile forms at least a part of the bottom lateral edge.
11. Pocket according to claim 1, wherein at least a part of the second textile is substantially strip-shaped, wherein the width of at least a part of the strip-shaped second textile is at least 5 millimetres.
12. Pocket according to claim 1, wherein at least a part of the second textile is substantially strip-shaped, wherein the width of at least a part of the strip-shaped second textile is at most 20 millimetres.
13. Pocket according to claim 1, wherein the first textile and/or the second textile comprises at least one thread which is provided with a metal coating.
14. Pocket according to claim 13, wherein the metal-coated thread comprises a non-metal core, wherein the weight ratio between the metal coating and the non-metal core is at least 0.11.
15. Pocket according to claim 1, wherein the first textile and/or the second textile comprises at least one thread which is completely made of metal.
16. Pocket according to claim 1, wherein the first textile and/or the second textile comprises at least one metal-comprising thread, wherein the metal is selected from the group consisting of: silver, copper, iron, aluminium, gold.
17. Pocket according to claim 1, wherein at least a part of the first textile and/or the second textile and/or the third textile is at least partly made of nylon, cotton, silk, linen and/or wool.
18. Pocket according to claim 1, wherein at least 20 percent of the first textile and/or the second textile consists of metal-comprising threads.
19. Pocket according to claim 1, wherein the first textile and the second textile are connected to each other and in particular stitched together.
20. Pocket according to claim 1, wherein the pocket is formed by a trouser pocket, a breast pocket and/or an inside pocket.
21. Garment provided with at least one pocket according to claim 1.
22. Garment according to claim 21, wherein the garment is selected from the group consisting of: a pair of trousers, a jacket, a shirt, a sweater, a T-shirt.
Description
[0010] The invention will be explained by means of non-limiting exemplary embodiments illustrated in the following figures, in which:
[0011] FIGS. 1a and 1b show a diagrammatic representation of a first possible embodiment of a rear side and a front side of a pocket for a garment according to the invention;
[0012] FIGS. 2a and 2b show a diagrammatic representation of a second possible embodiment of a rear side and a front side of a pocket for a garment according to the invention;
[0013] FIGS. 3a and 3b show a diagrammatic representation of a first garment provided with a pair of pockets according to the invention;
[0014] FIGS. 4a and 4b show a diagrammatic representation of a second garment provided with a pair of pockets according to the invention;
[0015] FIG. 5a shows a diagrammatic representation of the propagation of an incident radio wave in a multi-layered structure consisting of a layer of textile and a layer of body tissue;
[0016] FIG. 5b shows a diagrammatic representation of the propagation of an incident radio wave in a multi-layered structure consisting of a layer of textile enriched with metal threads according to the invention and a layer of body tissue;
[0017] FIG. 6 shows a graph in which the results of empirical measurements of the transmission values of three trouser pockets which may or may not allow radio waves to penetrate are shown; and
[0018] FIG. 7 shows a graph in which transmission values are shown as a function of the frequency, measured for different types of trouser pockets which are at least partly made of radio-wave-reflecting textile.
[0019] FIG. 1a shows a diagrammatic representation of a first possible embodiment of a rear side (2) of a pocket (1) for a garment according to the invention, which rear side (2) is configured to be turned towards the body of a person. The rear side (2) is configured to be connected to the front side (3) of the pocket (1), as is illustrated in FIG. 1b. In this case, the hatched portion (R1) shows the portion of the rear side (2) of the pocket (1) which is partly made of radio-wave-reflecting first textile (4). In the illustrated embodiment, the pocket (1) is configured to function as a trouser pocket of a pair of trousers. The pocket (1) is designed such that an electronic appliance placed in the pocket, such as for example a mobile telephone, is substantially completely covered by a radio-wave-reflecting first textile (4) on the side turned towards the body. The remaining part (7) of the rear side (2) may be made of a conventional textile.
[0020] FIG. 1b shows a diagrammatic representation of a front side (3) of a pocket (1) for a garment according to the invention, which front side (3) is configured to face away from the body of a person. The front side (3) of the pocket (1) is configured to be connected to a rear side (2) of the pocket (1), as is illustrated in FIG. 1a. In this case, the hatched portion (R2) shows the portion of the front side (3) of the pocket (1) which is made of a radio-wave-reflecting second textile (5). In the illustrated embodiment, the second textile (5) is strip-shaped. In this case, the second textile (5) forms at least a part of the bottom lateral edge of the front side (3) of the pocket (1). The strip-shaped second textile (5) has a predetermined width (b). The second textile (5) is connected to a third textile (6), which third textile (6) is made of a textile which is permeable to radio waves.
[0021] FIG. 2a shows a diagrammatic representation of a second possible embodiment of a rear side (12) of a pocket (11) for a garment according to the invention, which rear side (12) is configured to be turned towards the body of a person. The rear side (12) is configured to be connected to the front side (13) of the pocket (11), as is illustrated in FIG. 2b. The illustrated embodiment of the pocket (11) is in particular suitable for use as a breast pocket of, for example, a jacket. The rear side (12) of the pocket (11) is substantially completely made of a radio-wave-reflecting first textile (R3, 14).
[0022] FIG. 2b shows a diagrammatic representation of a front side (13) of a pocket (11) for a garment according to the invention, which front side (13) is configured to face away from the body of a person. The front side (13) of the pocket (11) is configured to be connected to the rear side (12) of the pocket (11), as is illustrated in FIG. 2a. The longitudinal edges of the front side (13) of the pocket (11) are made of a radio-wave-reflecting second textile (15). The reflecting edge has a width (b). The second textile (15) is connected to a third textile (16), which third textile (16) is substantially permeable to radio waves. The front side (13) is configured to be connected to the longitudinal edges of the rear side (12) by means of the outside of the longitudinal edges of the front side (13), as is illustrated in FIG. 2a.
[0023] FIGS. 3a and 3b show a diagrammatic representation of a first garment (30) provided with a pair of pockets (31a, 31b) according to the invention. In this case, FIG. 3a shows the rear sides (32a, 32b) of the pockets (31a, 31b) and FIG. 3b shows the corresponding front sides (33a, 33b) of the pair of trousers (30). The rear sides (32a, 32b) are made of a radio-wave-reflecting first textile (34a, 34b). The front sides (33a, 33b) are partly made of a radio-wave-reflecting second textile (35a, 35b) and partly made of a third textile (36a, 36b) which is substantially permeable to radio waves. A mobile telephone (37) is situated in the first pocket (31a), in which case the mobile telephone (37) is substantially completely covered by the radio-wave-reflecting first textile (34a) on the side turned towards the body. The radio-wave-reflecting second textile (35a) on the front side (33a) of the first pocket (31a) is designed such that the vital body parts are screened off from radio waves and/or radiation originating from the mobile telephone (37). In the illustrated embodiment, only the side wall of the front side (33a, 33b) turned towards the vital body parts is made of a radio-wave-reflecting second textile (35a, 35b). Optionally, an adjacent part of the side wall may also be made of a radio-wave-reflecting textile, as is illustrated in FIG. 1b.
[0024] FIGS. 4a and 4b show a diagrammatic representation of a second garment (40) provided with a pocket (41) according to the invention. The figures show a jacket (40) provided with a possible embodiment of a pocket (41) according to the invention. In this case, FIG. 4a shows the rear side (42) of the pocket (41) and FIG. 4b the front side (43) connected to the rear side (42). In this case, the rear side (43) is configured to be turned towards the body of the person wearing the jacket (40). The front side (43) is configured to face away from the body of the person. The illustrated mobile telephone (47) is substantially completely covered by the radio-wave-reflecting first textile (44) of the rear side (42) of the pocket (41). In the illustrated embodiment, the longitudinal edges of the front side (43) of the pocket (41) are completely made of a radio-wave-reflecting second textile (45). In this case, the reflecting longitudinal edges completely surround the mobile telephone (47). The remaining portion of the front side (43) consists of a third textile (46) which is substantially permeable to radio waves, so that the reception of the mobile telephone (47) is not impeded. In the illustrated embodiment of the garment (40), only the breast pocket (41) is partly made of a radio-wave-reflecting textile, but it is also conceivable for the other pockets (48a, 48b) to also be partly made of a radio-wave-reflecting textile.
[0025] FIG. 5a shows a diagrammatic representation of the propagation of an incident radio wave (110a) in a multi-layered structure consisting of a layer of conventional textile (112) which is substantially permeable to radio waves and a layer of body tissue (111). The incoming radio wave (110a) passes through the first textile layer (112) virtually completely and is then absorbed by the body tissue (111). The figure shows that the incoming wave (110a) passes through the textile (112), see wave (110b), and then largely passes through the body tissue (111), see wave (110c). Another part of the wave (110b) moving through the textile (112) is reflected as wave (110b) and subsequently allowed to pass through as wave (110b). In practice, multiple reflections may take place. Also, it is probable that a small part of the wave (110a) is absorbed by the textile (112).
[0026] FIG. 5b shows a diagrammatic representation of the propagation of an incident wave (120a) in a multi-layered structure consisting of a radio-wave-reflecting textile (124) and a layer of body tissue (121). The radio-wave-reflecting textile (124) comprises a layer of textile (122) provided with a radio-wave-reflecting layer (123). In this case, the reflective layer (123) consists of a textile enriched with metal threads, as used in a front side and/or rear side of a pocket according to the present invention. The incoming radio wave (120a, 120b) is virtually completely reflected by the reflective layer (123), with a reflection wave (20b, 20b) being formed. In the illustrated diagram, a small part of the incoming radio wave (120a) passes through the reflective layer (123) and propagates further to the body tissue (121). It is conceivable for multiple reflections to occur in the textile (122) provided with the reflective layer (123). A simple example of such multiple reflections is shown in the illustrated figure, reference being made to the illustrated radio waves (120b, 120b, 120b, 120c, 120c, 120c, 120d, 120e, 120f) which all originate from the primary incoming wave (120a). The figure indicates that virtually a complete incoming field of radio waves is reflected by the radio-wave-reflecting textile (124), and in particular by the reflective layer (123), so that only a small amount of radio-frequency energy passes through to the body tissue.
[0027] FIG. 6 shows a graph which shows the results of empirical measurements of the transmission values of a pair of trouser pockets which are at least partly made of radio-wave-reflecting textile and a trouser pocket which is made of a textile which is permeable to radio waves. In this case, the X axis shows the frequency of the emitted signal in MHz and the Y axis shows the measured transmission values in dB. For the measurements, use is made of a pair of antennas, with a first antenna transmitting a signal and a second antenna measuring this signal at a distance. In this case, the signal-transmitting antenna is situated in a trouser pocket during each experiment. A reference measurement was carried out prior to the start of the measurements. The distance between both antennas is the same for all measurements. The metal threads used during the experiments were silver yarns, in particular nylon thread provided with a silver coating. The silver yarn comprises 18 percent by weight of silver and another 82 percent by weight of nylon. Three different trouser pockets were tested, i.e. a conventional trouser pocket which allows radio waves to pass through, a trouser pocket in which only the rear side is substantially completely made of a radio-wave-reflecting textile and a trouser pocket in which the rear side is substantially completely made of a radio-wave-reflecting textile and in which the rear side is connected to a front side of the trouser pocket which is made of a radio-wave-reflecting textile on the peripheral edge.
[0028] The graph indicates that the transmission value for the conventional trouser pocket, which is made of a textile which is permeable to radio waves is equal for all emitted frequencies. The measured transmission value is 3.3 dB across the entire frequency band. This transmission value is related to an insulation value of 53%.
[0029] It can be seen that the use of a trouser pocket in which the rear side of the pocket is made of a radio-wave-reflecting textile results in a reduction in the transmission values. For example, the transmission value measured at a frequency of 2.4 GHz is 4.2 dB. This corresponds to an insulation value of 62%.
[0030] However, the greatest effect is achieved by using a trouser pocket which comprises a radio-wave-reflecting textile on both sides. During the illustrated experiment, the trouser pocket on the front side is made of a reflective layer which is situated along the peripheral wall with a width of 10 mm.
[0031] FIG. 7 shows a graph in which transmission values are illustrated as a function of the frequency, measured for different types of trouser pockets which are made of radio-wave-reflecting textile. For the measurements, a trouser pocket has been used of which only the rear side is made of radio-wave-reflecting textile and several trouser pockets of which both the rear side is made of radio-wave-reflecting textile and a part of the front side is made of radio-wave-reflecting textile. The metal threads used in the experiments consist of the above-described silver yarn.
[0032] For the measurements, use is made of a pair of antennas, with a first antenna transmitting a signal and a second antenna measuring this signal at a distance, in which case the first antenna is situated in the trouser pocket. The measurements are performed for three different mutual positions of the antennas, with the angle between both antennas being respectively 30, 0 or 30. These positions simulate the situation of a wearer of trousers provided with trouser pockets while walking.
[0033] The transmission values for the trouser pocket in which both the rear side and the front side of the trouser pocket comprise a textile enriched with metal threads are average values of measurements of trouser pockets having a reflective layer on the peripheral wall with widths of 5, 10, 15 and 20 mm, respectively. Experimentally, it has been found that a reflective wall having a minimum width of 5 mm on the front side of the pocket already results in a significant drop in the measured transmission values. A widening of the reflective wall affects the transmission value, but the latter will remain in the same range for widths of 5 to 20 mm.
[0034] The graph shows that the transmission values depend on the mutual position of the antennas. The graph also shows that the use of textile enriched with metal thread on the front side of the trouser pocket results in a significant reduction in the transmission values. In practice, this means an improved protection of the body tissue against the emitted radiation.
[0035] It will be clear that the invention is not limited to the exemplary embodiments illustrated and described here, but that countless variants are possible without departing from the scope of the attached claims which will be obvious to someone skilled in the art. In this case, it is conceivable for various inventive concepts and/or technical measures of the above-described variant embodiments to be completely or partly combined without moving away from the inventive idea described in the attached claims.
[0036] The verb comprise and conjugations thereof used in this patent document are understood to not only mean comprise, but also the expressions contain, substantially contain, formed by, and conjugations thereof.
