Filter for smoking products

Abstract

The present invention relates to a filter (1) for smoke products, comprising a cylindrical or conical sleeve (10) with a hollow chamber (100) for receiving a filter element (11), wherein the sleeve (10) comprises at least one end opening (101) and at least one cover part (102) corresponding to the opening (101) for closing and releasing the opening (101), and the cover part (102) is reversibly arranged on the sleeve (10) and the cover part (102) comprises several air passage openings (1021), wherein the filter (1) comprises at least one spirally shaped filter element (11) that can be inserted through the opening (101) into the hollow chamber (100).The filter according to the invention is characterized in that the filter element (11) can be reversibly inserted into the hollow chamber 100, i.e., is designed to be removable from the hollow chamber (100), wherein the at least one end-side opening (101) is designed such that the filter element (11) can pass through it or be guided through it in order to ensure the reusability of the filter (1).

Description

Technical area

[0001] The present invention relates to a filter according to the preamble of claim 1. State of the art

[0002] Various filter variations are known from the state of the art, all of which share the common problem of having to be thrown away after a single use. This is due to the materials used. Almost every filter uses paper, which, although biodegradable, has no place in nature, as it is enriched with nicotine and other harmful substances after use. The same applies to meerschaum filters, activated carbon filters, wood filters, cellulose filters, etc.

[0003] Reusable filters made of glass are also known, but these are brittle and therefore not built to last. There is also a filter made of an aluminum tube, but this is already filled with activated carbon and is therefore also a disposable product. Another problem with all of these filters is the difficulty of accessing the interior. Accordingly, these filters cannot be refilled and reused.

[0004] Furthermore, a filter is known from the prior art (US 4,373,539 A), which consists of a cylindrical sleeve and has a hollow chamber for receiving a filter element and / or material, in which a spiral-shaped filter element is firmly received.

[0005] The documents DE 10 2019 113 489 B3, DE 196 34 760 A1, DE 20 2019 104 042 U1, and CN 1 13 367 380 A describe a filter for smoking products consisting of a cylindrical paper or cardboard tube (DE 10 2019 113 489 B3) with a hollow chamber for accommodating a filter element and / or material. The paper or cardboard tube has an opening at one end and a cover part (here a sieve) corresponding to the opening for closing and uncovering the opening. The cover part is reversibly arranged on the tube and comprises a plurality of air passages.

[0006] CN 1 14431 525 A and WO 2022 / 133 982A1 further describe filters or filter tip devices in which, in order to establish a reversible connection between a sleeve and a cover part, corresponding connecting means are provided on the sleeve and on the cover part, wherein the connecting means form a screw connection or a magnetic connection and the connecting means can be connected to one another by means of a permanent magnet. Description of the invention

[0007] The present invention is based on the object of eliminating the aforementioned disadvantages and of creating a filter which is designed to be reusable.

[0008] According to the invention, the above object is achieved according to the preamble of claim 1 in conjunction with the characterizing features. Advantageous embodiments and further developments of the filter according to the invention are specified in the dependent subclaims. Brief description of the drawings

[0009] Further objects, features, advantages and possible applications of the filter according to the invention will become apparent from the following description of an embodiment with reference to the drawings.

[0010] The drawings show Fig. 1 the filter according to the invention in an advantageous embodiment in a perspective view; Fig. 2 the filter according to the invention as in Fig. 1 in a lateral sectional view; Fig. 3 a further advantageous embodiment of the filter according to the invention in a lateral sectional view, in which a spiral-shaped filter element is accommodated; Fig. 4 the spiral-shaped filter element in a side view; Fig. 5 a top view of the sleeve with the filter element installed; Fig. 6 the filter according to the invention in a further advantageous embodiment in a perspective view; Fig. 7 a cover part according to the invention in an advantageous embodiment in a perspective view; Fig. 8 a further advantageous embodiment of the filter in a front and perspective exploded view; Fig. 9 the filter as in Fig. 8 in a closed sectional view and the cover with filter element; Fign. 10a, 10b a further advantageous embodiment of the filter with telescopic sleeve in side view in section in an extended ( Fig. 10a ) and a shortened state ( Fig. 10b ); Fig. 10c an air-permeable closure 1071 on the inner housing part. Implementation of the invention

[0011] As from Fig. 1 As can be seen, the filter 1 according to the invention for smoking products 1 consists of a cylindrical (or conical; not shown) sleeve 10 with a hollow chamber 100 for receiving a filter element and / or material 11.

[0012] The sleeve 10 comprises at least one end opening 101 and at least one cover part 102 (e.g. a cap) corresponding to the opening 101 for closing and releasing the opening 101, wherein the cover part 102 is reversibly arranged on the sleeve 10 and the cover part 102 comprises a plurality of air passage openings 1021.

[0013] A further advantageous embodiment of the invention - as exemplified in Fig. 5 is shown - provides that the sleeve 10 comprises openings 101, 101' at its two end sides as well as cover parts 102, 102' corresponding to the openings 101, 101' for closing and releasing the two openings 101, 101'.

[0014] For this purpose, a first connecting means 103 is provided and / or formed on the cylindrical or conical sleeve 10, preferably in the region of the at least one opening 101, 101', which correspondingly corresponds to a second connecting means 1020 on the cover part 102. The connecting means on the outer circumference of the at least one opening 101, 101' can, for example, be a thread that correspondingly corresponds to an internal thread on the cover part 102.

[0015] As from Fig. 3 and Fig. 6 As can be seen, the outer diameter AÖ of the at least one opening 101, 101' and / or of a sleeve part 104 forming the opening 101, 101' or of the first connecting means 103 of the sleeve 10 can advantageously be smaller than the outer diameter AH of the cylindrical or conical sleeve 10. The inner diameter IÖ of the opening 101, 101' particularly advantageously corresponds to the inner diameter IH of the sleeve 10 (see also Fig. 2 and Fig. 3 ). Furthermore (not shown) the inner diameter IÖ of the at least one opening 101, 101' can advantageously be smaller than the inner diameter of the cylindrical or conical sleeve 10. These variants each ensure that the cover part 102, 102' with its outer wall is flush with the outer wall of the sleeve 10.

[0016] The filter 1 further comprises at least one spiral-shaped filter element 11 which can be introduced into the hollow chamber 100 through the opening 101, wherein the invention provides that this filter element 11 can be reversibly introduced into the hollow chamber 100, i.e. is designed to be removable from the hollow chamber 100, wherein the at least one end opening 101 and / or the second opening 101' (in particular with regard to its inner diameter IÖ) is designed such that the filter element 11 fits through the opening 101, 101' or can be guided through it, in order to be able to ensure that the filter 1 can be reused by the possible removal of the filter element 11.

[0017] For this purpose, the filter element 11 is advantageously designed with its outer diameter AF smaller than or (almost) equal to the inner diameter IÖ of the opening 101, 101', wherein it is particularly advantageous if the outer diameter AF is smaller than the inner diameter of the sleeve 10 or particularly preferably (almost) corresponds to the inner diameter of the sleeve 10, so that it can be received there (as far as possible) in a form-fitting manner, but advantageously not necessarily in a force-fitting manner for easier removal and / or can be guided through the opening 101, 101'.

[0018] The spiral-shaped filter element 11 can advantageously also be used without activated carbon or preferably offers space if activated carbon is to be used.

[0019] The sleeve 10 and / or the cover part 102 and / or the spiral-shaped filter element 11 are advantageously made of metal, preferably of stainless steel.

[0020] In addition to the aforementioned advantages of the invention, the filter 1 according to the invention offers the consumer the possibility of determining the filter strength themselves: e.g., activated carbon yes / no, quantity of activated carbon, spiral yes / no, glass beads yes / no, cellulose yes / no. The filter 1 according to the invention can be completely cleaned and reused.

[0021] In another in the Fign. 8 and 9 In the illustrated embodiment of the invention, the first connecting means 103 on the cylindrical or conical sleeve 10 is designed as an internal thread, which extends into the hollow chamber 100 of the sleeve 10. Accordingly, the cover part 102 in this embodiment has a second connecting means 1020, which is designed as an external thread.

[0022] On the side of the sleeve 10 opposite the cover part 102, an opening 101' or receptacle is further advantageously provided, into which a flat, air-permeable first closure cap 105 can be received, preferably pressed, in a form-fitting and / or force-fitting manner.

[0023] Furthermore, an opening or receptacle 1022 is advantageously provided on the cover part 102, into which a flat, air-permeable second closure cap 106 can be received, preferably pressed, in a form-fitting and / or force-fitting manner.

[0024] In another in the Fign. 10a, 10b In the illustrated embodiment of the invention, the sleeve 10 of the filter 1 is adjustable in length, for example, telescopically, from 25 mm to 35 mm. For this purpose, the sleeve 10 consists, for example, of at least two telescopically connectable housing parts, namely an inner housing part 107' and an outer housing part 107".

[0025] As from Fig. 10c As can be seen, the inner housing part 107' particularly preferably has an air-permeable closure 1071 at one end and the opening 101 at its opposite end.

[0026] The two housing parts 107', 107" can further comprise at least one or more corresponding holding or fixing means 1070, which prevent(s) the inner housing part 107' from being completely pulled out of the outer housing part 107". This design solves the problem that filter 1 becomes relatively warm towards the end; excessively hot smoke can, in turn, lead to injuries in the throat and lungs.

[0027] As from Fig. 11As can be seen, the two housing parts 107', 107" can advantageously be connected to one another by means of a reversible connection. The connection is particularly preferably formed by a screw connection with an internal thread on the outer housing part 107" and an external thread 1072 on the inner housing part 107'. The screw connection is preferably formed to form a length-variable adjustment between the inner housing part 107' and the outer housing part 107". List of reference numbers

[0028] 1 Filter 10 Cylindrical or conical sleeve 11 Spiral-shaped filter element 100 Hollow chamber 101, 101' (opposite) opening(s) 102, 102' (opposite) cover part(s) 103 First connecting means (area) on the sleeve 104 Sleeve part 105 Air-permeable first closure cap 106 Air-permeable second closure cap on the cover 107', 107" Telescopically connectable housing parts of the sleeve 1020 Second connecting means on the cover part 1021 Air passage openings on the cover part 1021' Air passage openings on the opposite cover part 1021" Opposite air passage openings on the sleeve 1022 Opening or receptacle on the cover part 1030 Thread on the connecting means or on the sleeve part 1070 Holding means 1071 Air-permeable Closure 1072External thread on the inner housing part AFOuter diameter of the filter element AHOuter diameter of the sleeve IFInner diameter of the filter element IÖInner diameter of the opening IHInner diameter of the sleeve

Claims

1. A filter (1) for smoking products, comprising a cylindrical or conical sleeve (10) with a hollow chamber (100) for receiving a filter element (11), wherein the sleeve (10) comprises at least one end opening (101) and at least one cover part (102) corresponding to the opening (101) for closing and releasing the opening (101), and the cover part (102) is reversibly arranged on the sleeve (10), and the cover part (102) comprises a plurality of air passage openings (1021), wherein the filter (1) comprises at least one spiral-shaped filter element (11) that can be inserted into the hollow chamber (100) through the opening (101), characterized in thatthe spiral-shaped filter element (11) can be reversibly introduced into the hollow chamber 100, i.e. is designed to be removable from the hollow chamber (100), wherein the at least one end opening (101) is designed such that the filter element (11) fits through it or can be guided through it.

2. Filter (1) according to claim 1, characterized in that the spiral-shaped filter element (11) is made of stainless steel, titanium or tungsten.

3. Filter (1) according to claim 1 or 2, characterized in that a first connecting means (103) is provided and / or formed on the cylindrical or conical sleeve (10) in the region of the at least one opening (101, 101'), which corresponds accordingly to a second connecting means (1020) on the cover part (102).

4. Filter (1) according to one of the preceding claims, characterized in thatthe outer diameter (AÖ) of the at least one opening (101, 101') and / or of a sleeve part (104) forming the opening (101, 101') or of the first connecting means (103) of the sleeve (10) is smaller than the outer diameter (AH) of the cylindrical or conical sleeve (10).

5. Filter (1) according to one of the preceding claims, characterized in that the inner diameter (IÖ) of the opening (101, 101') corresponds to the inner diameter (IH) of the sleeve (10).

6. Filter (1) according to one of the preceding claims, characterized in that the first connecting means (103) on the cylindrical or conical sleeve (10) is designed as an internal thread which extends into the hollow chamber (100) of the sleeve (10).

7. Filter (1) according to one of the preceding claims, characterized in that the cover part (102) has a second connecting means (1020) which is designed as an external thread.

8. Filter (1) according to one of the preceding claims, characterized in thaton the side of the sleeve (10) opposite the cover part (102) there is formed an opening (101') or receptacle into which a flat, air-permeable first closure cap (105) can be received, preferably pressed, in a form-fitting and / or force-fitting manner.

9. Filter (1) according to one of the preceding claims, characterized in that an opening or receptacle (1022) is formed on the cover part (102), into which a flat, air-permeable second closure cap (106) can be received, preferably pressed, in a form-fitting and / or force-fitting manner 10. Filter (1) according to one of the preceding claims, characterized in that the sleeve of the filter (1) is adjustable in length 11. Filter (1) according to claim 10, characterized in that the length adjustment is carried out by a telescopic design of the sleeve (10).

12. Filter (1) according to claim 11, characterized in thatthe sleeve (10) consists of at least two telescopically connectable housing parts, namely an inner housing part (107') and an outer housing part (107").

13. Filter (1) according to claim 12, characterized in that the inner housing part (107') has an air-permeable closure (1071) at one end and the opening (101) at its opposite end.

14. Filter (1) according to claim 11 or 12, characterized in that the two housing parts (107', 107") comprise at least one or more mutually corresponding holding or fixing means (1070), which prevents the inner housing part (107') from being completely pulled out of the outer housing part (107").

15. Filter (1) according to one of the preceding claims, characterized in thatthe two housing parts (107', 107") are connected to one another by means of a reversible connection, wherein the connection is preferably formed by a screw connection with an internal thread on the outer housing part (107") and an external thread (1072) on the inner housing part (107').

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