Patent Claims

1. A filtration device characterized in that it comprises a filtering membrane (250) for filtering air from small particles, distant from the face (5009) and from the chin towards the front, to the sides and below the chin, and continuing from the chin (297), the filtering membrane (250) extends distantly towards the neck (80) to form a large space (5008) of filtered air with free access of exhaled air directed through the nose (5012) to the free space (232) below the nose and the free space (229) below the chin, and also to form a large active area (290) of the filtering membrane (250) to reduce the resistance imposed by the filtering membrane (250) to the passage of inhaled and exhaled air and thereby facilitate breathing and/or the filter membrane (250) is provided with a sealing rim (15) attached circumferentially around the perimeter of the filtering membrane (250) and adhering to the face (5009) for sealing the filtering membrane (250) to the face (5009) and further for putting away the filtering membrane (250) away from the face (5009) to increase the space (5008) of filtered air and thereby free air flow around the face and also to increase the active area (290) thereby for easier breathing.

2. A filtration device according to claim 1 , characterized in that the filtering membrane (250) is formed by a self-supporting face mask (2’) to maintain the shape in which it is distanced from the face (5009) or the shape of the distanced filtering membrane (250) is formed by a carrier (181), which is removably fixed on the filtering membrane or is integral with the filtering membrane (250.

3. A filtration device according to claim 2, characterized in that the carrier (181) is formed by one of: a structure (195) comprising a base (122) and a reinforcement (111), a permeable plastic net, preferably formed by pressing to the shape of a large-area face mask (2'') for enlarged active area (290), a metallic or plastic grid, which is a molding, preferably heat-moldable, in order to adapt the shape for ideal sealing to the face (5009).

4. A filtration device according to claim 3, characterized in that the reinforcements (111) are formed by wires (5001) of an expandable dome, fixed on the filtering membrane (250), which are arranged in parallel at intervals into a dome shape to achieve a large space (5008) and active area (290), wherein the reinforcements (111) are adapted for folding together by compression, wherein, in the folded shape the carrier (181) is of small size and it can be easily stored, and the reinforcements (111) can be spaced apart again to form a domed shape with the space (5008) of the filtered air, wherein, the reinforcements (111) are oriented horizontally or vertically.

5. A filtration device according to anyone of the preceding claims, characterized in that it comprises a chamber (183) made of an airtight fabric, which defines an airtight small space separated from the filtered air space (5008), wherein, a breathing out valve (34) and/or a breathing-in valve (35) is/are arranged on the chamber (183), and preferably, a breathing-out valve (34) is provided with a breathing-out face mask (210) for filtering of the breathed out air to protect the environment.

6. A filtration device according to anyone of the preceding claims, characterized in that the filtering membrane (250) comprises a large-size breathing out valve (34), preferably formed at least by two chambers with flaps (219) to put up low resistance to the air passing through.

7. A filtration device according to anyone of the preceding claims, characterized in that a bridge (178) is situated in the chin region (297), winch is adapted to change position of the filtering membrane (250) and its distancing away from the face (5009) for free breathing of outside unfiltered air in the active position of the bridge (178) and in the inactive position to allow full sealing of the filtering membrane (250) for breathing of the filtered air.

8. A filtration device according to anyone of the preceding claims, characterized in that tabs (206) are formed on the filtering membrane (250) in the form of a face mask (2), which are stacked one on top of the another in the folded state and they form a rectangle and on both sides of the face mask (2) they are fastened by a connection (207) formed by at least one of: sewing, welding, gluing, and the face mask (2) is provided with reinforcements (111) in tum-ups (206), and when the face mask (2) is extended in the direction of axis (246) by fastening to the face by means of the fastening (3, 3 ') or the fastening (3''), simplified with arch-shaped reinforcements (111) ensuring a domed shape of the mask (2) with free space (229) under the chin (297).

9. A filtration device according to anyone of the preceding claims, characterized in that it comprises a sealing means (291a) which is adapted to seal the respirators (286) or face masks (2) around the nose, and of cheeks in the nasal region by pressing against the face 5009 by pulling the fastening 3, in the area of the nose and of the cheeks, and which is located on both sides of the nose, wherefrom it continues to a selectable distance through a bend between the face and the nose towards the ears, preferably to halfway of the distance between the nose and ears or beyond, and the sealing means (291a) is made of a flexible material, preferably of a metal wire or plastic round cross-section piece, which allows the sealing means (291a) to be formed by pushing it, preferably by fingers, on both sides of the nose and the cheeks, in particular in the bend between the nose and the cheeks, to seal it to nose and the cheeks, and at the same time the sealing means (291a) has sufficient rigidity to overcome the tension of the fastening 3 of the filtration device to the sides towards the ears and not to deviate from the molded form, and to maintain the shape after forming and to prevent spontaneous returning to the original position before shaping, and preferably it is cold or hot formable by warming before application to the face, wherein, during forming the forming is performed on the face or before the application to the face, and it is adapted for application to the face for checking purposes between individual steps of the forming process for gradual forming of the sealing means (291a) for the face shape of a particular user.

10, Filtration device according to anyone of the preceding claims, characterized in that the sealing means (291a) is formed by a one-piece reinforcement (111 ') which is guided over the nose or is interrupted above the nose and consists of two reinforcements (111) arranged on both sides of the nose and at the point where the sealing means (291 a) is interrupted, the reinforcements (111) are connected by a connecting means (327) formed by the filtration device material (286) or another connecting means which is formed by a material allowing the connecting means (327) to bend nose for sealing.

11. A filtration device according to claim 10, characterized in that a sealing means (291a) is fastened to the filtration device (286) by a fastening (287a) fixedly or removably, outside or inside, wherein the fastening (287a) is achieved at least by one of: gluing, sewing, staples, insertion into a sewn or glued small sleeve, by insertion into a weld on sleeve or a combination thereof.

12. A filtration device according to anyone of the preceding claims, characterized in that to the filtration device (286), preferably to the membrane (250), is by means of fastening elements (201) fastened firmly or removably a carrier (181), preferably formed by a structure (195) with reinforcements (111) and a base (122) for creating of the largest possible active filter area (5b) and the smallest possible inactive filter area (5a) at the edge of the filtration device (286) adjacent the user’s face.

13. A filtration device according to anyone of the preceding claims, characterized in that the filtering membrane (250) forming the free space (229) under the chin (227) is formed by two membranes (250) of two respirators (286), and this of a first respirator (286‘) and a. second respirator (286“), which are connected by a connecting element (191) detachably or permanently, or it is made of one filtering membrane (250).

14. A filtration device according to anyone of the preceding claims, characterized in that the fastening (3) of the elastic rubber cords is guided behind the ears, to which it is preferably attached for pulling of the membrane (250) to the face, and to the fastening (3) is for alternative fastening of the membrane (250) attached the connecting element (108), or the connecting element (108) is attached directly to the face mask (2) or the membrane (250), and it consists of parts of the connected element (108A) on one side, and parts of the connected element ( 108B) on the other side, which are connected behind the head by a coupling (109), preferably magnetic one, to achieve a pull on the face mask (2) so as to seal better to the face, wherein, the pulling force is preferably adjustable by changing of the length of at least one of the parts of the connecting element (108) by means of an adjustable element (301).

15. A filtration device according to anyone of the preceding claims, characterized in that the carrier (181) is formed by two halves of reinforcements (111), which are interconnected by bases (122) of solid rigid material, preferably a wire, and the bases (122) together with the reinforcements ( 111) form two separate structures (195), each reinforcing one side of the membrane (250), and said structures (195) are adapted by means of a hinge (10), which connects them in the middle of the membrane (250), and around which they rotate, for tilting of both sides of the structure (195) together, and thereby, for reducing of the size of the membrane (250) for the storage purposes, and further to open both sides of the structure (195), and thereby prepare it for putting it on face ( 5009), and preferably for a large-area membrane (250) with a free space (229) under the chin, at least two mutually independent structures (195) are used to reinforce the front and rear parts of the membrane.

16. A filtration device according to anyone of the preceding claims, characterized in that at least two baffles (294) are mounted on the reinforcements (111), rotating together with the reinforcements (111) around the hinge (10), which are connected to each other by a strap (293) for ensuring of the required opening of both parts of the structure (195) of the carrier (181) to adjust the distance of the carrier (181) and thus of the membrane (250) from the cheeks, or the size of the opening is adjusted by shortening of the of the membrane (250) circumference attached to the face (5009) by a shortening means (6000), preferably formed by a clip (313), which also adjusts the seal of the membrane (250) to the face (5009).

17. A filtering device according to anyone of the preceding claims, characterized in that it comprises a filtering membrane (250) fixed to the head by fastenings (3) and/or by fastening (3003) of the circumference of the membrane (250) or of the rim (15) to the face (5009) by a fastening means (19), preferably with glue, or adhesive tape, wherein, the adjustment of the circum ference size of the filtering membrane (250) to the size of the face (5009) is carried out by adjusting the length of the adjustable section of the filtering membrane (250) by means of a connecting means (19), preferably formed by at least one of: glue (141) adhesive tape (213), clip (313), a Velcro (268), whereby the total circumference of the filtering membrane (250) is adjusted to the desired length so that the membrane seals on the user’s face (5009), wherein, a large space (5008) and a large active area (290) of the filtering membrane (250) is preferably achieved by moving the membrane (250) away from the face by installing a rim (15) and/or a carrier (181) formed by a carrier (181 ') in the face (5009) area and/or a carrier (181") under the chin (297).

18. A filtration device according to anyone of the preceding claims, characterized in that the filtering membrane (250) is adapted by means of a carrier (181), preferably a carrier (181 ’) in the space of the face (5009), and/or a carrier (181 ”) under the chin (297) to form a space under the nose (5012) and/or a space under the chin (297) for free flowing of the breathed out air directed by the nose (5012) under the nose (5012) and/or the chin (297) and its releasing through the filtering membrane (250) from the space (232) under the nose (5012) and/or the space (229) under the chon (297) to the free space.

19. A filtering device according to anyone of the preceding claims, characterized in that the filtering membrane (250) is adapted by means of a rim (15) or a part of the rim (15) to form a space (229) under the chin (297) by increasing the distance of the filtering membrane (250) from itself by the rim (15) for free flowing of the breathed out air.

20. A filtration device according to anyone of the preceding claims, characterized in that by the fastening of the filtering membrane (250) along the circumference or of the rim (15) along the circumference of the filtering membrane (250), by a fastening means, preferably by glue, a space under the nose (232) is formed in an optional place for free flowing of the breathed out air towards the chin and/or under the chin.

21. A. filtration device according to anyone of the preceding claims, characterized in that the filtering membrane (250) is adapted for easy production in a shape unfolded into a plane and/or for transporting it in the state folded around the axis (G), and it is adapted for installation by the user by applying it in the unfolded state to the face (5009) and bysecuring it by means of a fastening (3) to the head and/or by gradual gluing of the circumference of the membrane (250) or of the rim (15) along the circumference (250) of the membrane to the face (5009), wherein the lower part of the filtering membrane (250) or the lower part of the rim (15) is connected or is adapted to be connected by a connecting means (19), preferably formed by one of: glue, or an adhesive tape, a Velcro, a clip for final length adjustment of the circumference of the filtering membrane (250) to the face (5009) of the user for sealing by adjusting the length of the adjustable section (250b) of the filtering membrane (250).

22. A filtration device according to anyone of the preceding claims, characterized in that it comprises reinforcements (111’ ), preferably formed by a nasal wire (5001) and/or reinforcements (111), preferably formed by a side wire for adjusting of the shape of the filtering membrane (250) to the shape of the face (5009) of a user.