IL266982A - Filter-cooler for hand rolled cigarettes - Google Patents

Description

תינדי תולגלוגמ תוירגיסל ררקמ-ןנסמ FILTER-COOLER FOR HAND ROLLED CIGARETTES FIELD OF THE INVENTION The present invention generally pertains to filter-cooler of hand-rolled cigarettes and to methods for filtering whilst cooling inhaled smoke.

BACKGROUND OF THE INVNETION Medical cannabis Interest in medical applications of cannabis has increased dramatically during the past twenty years. Benefit of using medical cannabis was reported or at least studied in a broad range of conditions, including pain control of many forms, including cancer pain, pain from headaches, pain from rheumatic conditions and various other disorders; nausea and vomiting prevention & control; anxiety; sleep disorders; spasticity in multiple sclerosis; appetite stimulation in patients with cancer or chronic diseases such as HIV, AIDS and nerve pain; abdominal pain in inflammatory bowel disease; disorders such as epilepsy which are associated with seizures; glaucoma; autoimmune diseases; and for its anti-tumor effects in certain cancers. Estimates suggest a total of $6.7 billion US was spent in North America on legal cannabis in 2016; see Silverstone, P H. "Medical Assessment of Cannabis Efficacy and Side-effects Scale (MACESS©): a simple evidence-based scale to determine clinical benefits and adverse events following medical cannabis use." Advances in Social Sciences Research Journal 5.12 (2018).

Medical cannabis smoking cigarettes A is a rolled cannabis cigarette. Unlike commercial tobacco cigarettes, joints are ordinarily hand-rolled by the user with rolling papers, though in some cases they are machine-rolled. Rolling papers are the most common rolling medium in industrialized countries; however, brown paper, cigarettes or beedies with the tobacco removed, receipts, and newspaper can also be used, particularly in developing countries. Modern papers are manufactured in a range of sizes from a wide variety of materials including rice, hemp, and flax, and are also available in liquorice and other flavoured varieties. A joint can vary in size, 1 typically containing between 0.25 to 1 g net weight of cannabis. Tobacco may or may not be used in the rolling process. In Europe, in certain Commonwealth nations, and more recently in North America, joints, or spliffs typically include a cigarette filter or a bit of rolled thin cardboard in one end to serve as a mouthpiece, commonly referred to as the crutch, filter, or roach.

Hand-rolled cigarettes for medical cannabis Roll-your-own cigarettes (also called RYO, MYO, rollies, roll-ups, burns, bingie, hand-rolled cigarettes, or rolls) refer to cigarettes made from loose tobacco and rolling paper. Roll-your-own products are sold in pouches or as tins of tobacco, sometimes including the rolling papers or cigarette tubes. Loose filters are available for purchase and can be added to the rolled cigarettes. RYO has become more popular in the United States in recent years, but relatively few smokers, only 6.7%, actually roll their own cigarettes. In contrast, this rate was 15% in Canada, 22% in Australia, and 30% in the UK.

Filters for machine (commercial-) cigarettes Filter of regular cigarettes are usually made of cellulose acetate fiber, paper or activated charcoal (either as a cavity filter or embedded into the cellulose acetate). Macroporous phenol-formaldehyde resins and asbestos have also been used in cigarette filters. The acetate and paper modify the particulate smoke phase by particle retention (filtration), and finely divided carbon modifies the gaseous phase (adsorption). Those filters are designed to reduce "tar" and nicotine smoke yields up to 50%, with a greater removal rate for other classes of compounds (e.g., phenols), but are ineffective in filtering toxins such as carbon monoxide.

Filter were suggested to reduce toxicity. Reduced yield of vapor phase irritants from activated charcoal filter cigarettes correlated with markedly decreased in vitro cytotoxicity and less pronounced morphological changes of the nose and lower respiratory tract in vivo; see Gaworski et al. (2009). Effect of filtration by activated charcoal on the toxicological activity of cigarette mainstream smoke from experimental cigarettes. Inhalation Toxicology 21, 688–704. Extracts from filter cigarettes induced less DNA damage than those from unfiltered cigarettes; see Cavallo et al. (2013). Cyto-genotoxic effects of smoke from commercial filter and non-filter cigarettes on human bronchial and pulmonary cells. Mutation Research 750, 1–11 2 Production-wise, cellulose acetate is made by esterifying bleached cotton or wood pulp with acetic acid. Of the three cellulose hydroxy groups available for esterification, between two and three are esterified by controlling the amount of acid (degree of substitution, DS- 2.35-2.55). The ester is spun into fibers and formed into bundles called filter tow. Flavors (menthol), sweeteners, softeners (triacetin), flame retardants (sodium tungstate), breakable capsules releasing flavors on demand, and additives coloring the tobacco smoke may be added to cigarette filters. Starch glues or emulsion-based adhesives are used for gluing cigarette seams. Hot-melt and emulsion-based adhesives are used for filter seams. Emulsion-based adhesives are used for bonding the filters to the cigarettes. The tip paper may be coated with polyvinyl alcohol.

In the 1970s epidemiologic evidence relative to tobacco-related cancers and data for coronary heart disease indicated a reduced risk among filter smokers for these diseases. Between 1970 and 1980 some studies showed a 20-50% reduction in risk of lung cancer for long-term smokers of filtered cigarettes as compared to smokers of non-filtered cigarettes (IARC, 1986) but later studies indicated a similar risk for lung cancer in smokers of filtered and non-filtered cigarettes Cigarette paper for machine (commercial-) products and joints Cigarette paper is made from thin and lightweight "rag fibers" (nonwood plant fibers) such as flax, hemp, sisal, rice straw, and esparto. The paper is available in rolls and rectangular sheets of varying sizes, and has a narrow strip of glue along one long edge. It may be transparent, colored and flavored. It has a high filler content and a basis weight of 10- 28 g/m². To control the smoking properties, this paper has a porosity that is suited to the type of tobacco and contains additives that regulate burning. One critical paper characteristic is permeability; its primary physical influence is smoke dilution. Among the fillers used are calcium carbonate to influence the permeability and color, magnesium carbonate to improve ash color, or titanium oxide if a particularly white ash is required. Sodium potassium tartrate (Seignette's salt), sodium and potassium citrate are used as a combustion regulator in cigarette paper, increased levels result in faster burning papers. Poly(vinyl alcohol) in aqueous solution is used for cigarette adhesives. Permeability is defined as the measure of the volume of air that flows 3 through a specified area of cigarette paper in a given unit of time. It is measured in CORESTA units. US commercial filter cigarette brands have paper permeability between 14 and 51 CORESTA units. Increased cigarette paper permeability results in increased smoke dilution with air. Other specialty papers for tobacco products are Imitation cork paper is a brownish yellow colored paper used for the production of cigarette tips. It has an imitation cork imprint and joins the filter to the tobacco stick.Filter encasing paper is used for the production of acetate or cellulose filters. The tip paper may be covered with polyvinyl alcohol. Cigar or cigarillo casing paper holds the chopped tobacco together and serves as the inner casing.

SUMMARY OF THE INVENTION A filter-cooler for a hand-rolled cigarette, characterized by an elongated either polygonal or cylindrical envelope having a main longitudinal axis is hereto disclosed.

The envelope having external surface and internal surface; wherein at least one portion of at least one of the surfaces comprises one or more helical threads configured to provide the inhaled smoke with at least one turbulent flow around the main longitudinal axis, the threads selected from (a) externally protruding ridges, i.e., male or external threads, convex shape raised strips, buffers and fins; (b) internally protruding recesses, i.e., female or internal threads, convex shape soaked slots; and, (c) both the externally and internally threads.

Much similarly, the invention discloses methods for filtering whilst cooling inhaled smoke. Those methods are provided useful by utilizing the filter-cooler as defined herein above and after.

A filter-cooler for a hand-rolled cigarette, characterized by an elongated either polygonal or cylindrical envelope having a main longitudinal axis, is also disclosed.

The envelope is having external surface and internal surface; wherein at least one portion of at least one of the surfaces comprises one or more helical threads configured to provide the inhaled smoke with at least two turbulent flow around the main longitudinal axis, namely, at least one clockwise first flow and at least one second counter clockwise flow, the threads selected from (a) externally protruding ridges, i.e., male or external threads, convex shape raised strips, buffers and fins; (b) 4 internally protruding recesses, i.e., female or internal threads, convex shape soaked slots; and, (c) both the externally and internally threads.

A filter-cooler for a hand-rolled cigarette, characterized by an elongated either polygonal or cylindrical envelope having a main longitudinal axis with a distal portion extending to the c cigarette, and a proximal opposite portion facing the smoker is disclosed. The envelope is having external surface and internal surface. The cylinder having a substantially circular cross section being perpendicular to the main longitudinal axis, the cross section having a first circumference extended from about 9' o'clock to about 3' o'clock ('upper portion'), and a second circumference extended from about 3' o'clock to about 9' o'clock ('lower portion'); the envelope is pierced by a plurality of apertures having a cross section being perpendicular to the main longitudinal axis; at least one of the following is being held true: at least 10% of the apertures are characterized by a polygonal cross section; the polygonal cross section is selected from a member of a group consisting of quadrilateral shape, including a rectangular and trilateral shape, including equilateral, isosceles, scalene, triangular and rectangled triangle; the upper portion comprises at least 10% more apertures than the lower portion; the distal portion comprises at least 10% more apertures than the proximal portion; and the proximal portion comprises at least 10% more apertures than the distal portion.

A filter-cooler for a hand-rolled cigarette, characterized by an elongated, either polygonal or cylindrical envelope having a main longitudinal axis with a distal portion extending to the cigarette, and a proximal opposite portion facing the smoker is disclosed. The envelope having external surface and internal surface. The cylinder is having a substantially circular cross section being perpendicular to the main longitudinal axis, the cross section having a first circumference extended from about 9' o'clock to about 3' o'clock ('upper portion'), and a second circumference extended from about 3' o'clock to about 9' o'clock ('lower portion'); the envelope is pierced by a plurality of apertures having a cross section being perpendicular to the main longitudinal axis; at least one of the following is being held true: the distal end is truncated so that an open bore is provided throughout the envelope up from the distal end to the proximal portion; the distal end is at least partially closed; the close distal end is pierced by one or more apertures having a polygonal cross section; the close distal end comprises one or more apertures at its upper portion whilst it is intact, namely does not comprise apertures at its lower portion; the close distal end comprises at its upper portion either 10% more apertures or 10% more aperture (pierced hence open) surcface than at its lower portion; the polygonal cross section is selected from a member of a group consisting of quadrilateral shape, including a rectangular and trilateral shape, including equilateral, isosceles, scalene, triangular and rectangled triangle; and the upper portion comprises at least 10% more apertures than the lower portion.

The filter-cooler as defined in any of the above, wherein the either polygonal or cylindrical envelope having a main longitudinal axis is coil-wounded to form a screw- like outer, inner or both outer & inner coiled body.

The filter-cooler as defined in in any of the above, wherein the envelope is an open bored primary filter accommodating at least one secondary filer.

The filter-cooler as defined above, wherein the secondary filter is selected from a group consisting of continuous matter, purposive matter, particulated matter, granulated matter, fibrous matter, and tablated (being either pressed or condensed) matter.

The filter-cooler as defined above, wherein the secondary filtering matter is selected from inorganic materials, organic materials, composite materials, mixtures and combinations thereof.

The filter-cooler as defined above, wherein the secondary filter comprises a member of a group consisting of esterifying bleached cotton, wood pulp with acetic acid, including those with DS ranging from 2.35 to 2.55, flavoring agents, sweeteners, softeners, flame retardants, colorants, glues, adhesives; cellulose ester, including cellulose acetate and impregnated cellulose esters with dicarboxylic acid, polycarboxylic acid and their anhydrides, and propionic acid polyethylene glycol, triethyleneglycol diacetate, glycerin compounds, diacetate of polyethylene glycol, polyalkylene oxide, lower fatty acid esters of multivalent alcohols, polyethylene glycol, and the like; paper or activated charcoal (either as a cavity filter or embedded 6 into the cellulose acetate), macroporous phenol-formaldehyde resins and asbestos; and polyvalent metal salt of an acid selected from among organic and inorganic acids.

BRIEF DESCRIPTION OF THE FIGURES The current invention will be better understood and the nature of the objectives set forth above will become apparent when consideration is given to the following detailed description of the preferred embodiments. For clarity of explanation, the detailed description further makes reference to the attached drawings herein.

Figure 1 discloses a commercially available filter; Figure 2 discloses a filter according to one embodiment of the invention; and Figure 3 discloses a set of filters according yet other embodiments of the invention.

DETAILED DESCRIPTION OF THE REFERRED EMBODIMENTS The invention has been described using exemplary preferred embodiments. However, for those skilled in this field, the preferred embodiments can be easily adapted and modified to suit additional applications without departing from the spirit and scope of this invention. Thus, it is to be understood that the scope of the invention is not limited to the disclosed embodiments. On the contrary, it is intended to cover various modifications and similar arrangements based upon the same operating principle. The scope of the claims, therefore, should be accorded the broadest interpretations so as to encompass all such modifications and similar arrangements.

In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the invention. However, it will be understood by those skilled in the art that the present invention may be practiced without these specific details. In other instances, well-known methods, procedures, and components have not been described in detail so as not to obscure the present invention.

The subject matter regarded as the invention is particularly pointed out and distinctly claimed in the concluding portion of the specification. The invention, however, both as to organization and method of operation, together with objects, features, and 7 advantages thereof, may best be understood by reference to the following detailed description when read with the accompanying drawings.

It will be appreciated that for simplicity and clarity of illustration, elements shown in the figures have not necessarily been drawn to scale. For example, the dimensions of some of the elements may be exaggerated relative to other elements for clarity.

Further, where considered appropriate, reference numerals may be repeated among the figures to indicate corresponding or analogous elements.

Because the illustrated embodiments of the present invention may for the most part, be implemented using electronic components and circuits known to those skilled in the art, details will not be explained in any greater extent than that considered necessary as illustrated above, for the understanding and appreciation of the underlying concepts of the present invention and in order not to obfuscate or distract from the teachings of the present invention.

In the foregoing specification, the invention has been described with reference to specific examples of embodiments of the invention. It will, however, be evident that various modifications and changes may be made therein without departing from the broader spirit and scope of the invention as set forth in the appended claims.

Moreover, the terms “front,” “back,” “top,” “bottom,” “over,” “under” and the like in the description and in the claims, if any, are used for descriptive purposes and not necessarily for describing permanent relative positions. It is understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of operation in other orientations than those illustrated or otherwise described herein.

The connections as discussed herein may be any type of connection suitable to transfer signals from or to the respective nodes, units or devices, for example via intermediate devices. Accordingly, unless implied or stated otherwise, the connections may for example be direct connections or indirect connections. The connections may be illustrated or described in reference to a single connection, a plurality of connections, unidirectional connections, or bidirectional connections. However, different embodiments may vary the implementation of the connections. For example, separate unidirectional connections may be used rather than bidirectional connections and vice 8 versa. Also, plurality of connections may be replaced with a single connection that transfers multiple signals serially or in a time multiplexed manner. Likewise, single connections carrying multiple signals may be separated out into various different connections carrying subsets of these signals. Therefore, many options exist for transferring signals.

Although specific conductivity types or polarity of potentials have been described in the examples, it will be appreciated that conductivity types and polarities of potentials may be reversed.

Those skilled in the art will recognize that the boundaries between logic blocks are merely illustrative and that alternative embodiments may merge logic blocks or circuit elements or impose an alternate decomposition of functionality upon various logic blocks or circuit elements. Thus, it is to be understood that the architectures depicted herein are merely exemplary, and that in fact many other architectures can be implemented which achieve the same functionality.

Any arrangement of components to achieve the same functionality is effectively “associated” such that the desired functionality is achieved. Hence, any two components herein combined to achieve a particular functionality can be seen as “associated with” each other such that the desired functionality is achieved, irrespective of architectures or intermedial components. Likewise, any two components so associated can also be viewed as being “operably connected,” or “operably coupled,” to each other to achieve the desired functionality.

Furthermore, those skilled in the art will recognize that boundaries between the above described operations merely illustrative. The multiple operations may be combined into a single operation, a single operation may be distributed in additional operations and operations may be executed at least partially overlapping in time. Moreover, alternative embodiments may include multiple instances of a particular operation, and the order of operations may be altered in various other embodiments.

Also for example, the examples, or portions thereof, may implemented as soft or code representations of physical circuitry or of logical representations convertible into physical circuitry, such as in a hardware description language of any appropriate type. 9 However, other modifications, variations and alternatives are also possible. The specifications and drawings are, accordingly, to be regarded in an illustrative rather than in a restrictive sense.

In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word ‘comprising’ does not exclude the presence of other elements or steps then those listed in a claim. Furthermore, the terms “a” or “an,” as used herein, are defined as one, or more than one. Also, the use of introductory phrases such as “at least one” and “one or more” in the claims should not be construed to imply that the introduction of another claim element by the indefinite articles “a” or “an” limits any particular claim containing such introduced claim element to inventions containing only one such element, even when the same claim includes the introductory phrases “one or more” or “at least one” and indefinite articles such as “a” or “an.” The same holds true for the use of definite articles. Unless stated otherwise, terms such as “first” and “second” are used to arbitrarily distinguish between the elements such terms describe. Thus, these terms are not necessarily intended to indicate temporal or other prioritization of such elements. The mere fact that certain measures are recited in mutually different claims does not indicate that a combination of these measures cannot be used to advantage.

It is hence a first object of the invention to disclose a filter-cooler for a hand-rolled cigarette, characterized by an elongated either polygonal or cylindrical envelope having a main longitudinal axis, the envelope having external surface and internal surface; wherein at least one portion of at least one of the surfaces comprises one or more helical threads configured to provide the inhaled smoke with at least one turbulent flow around the main longitudinal axis, the threads selected from (a) externally protruding ridges, i.e., male or external threads, convex shape raised strips, buffers and fins; (b) internally protruding recesses, i.e., female or internal threads, convex shape soaked slots; and, (c) both the externally and internally threads.

Another object of the invention is to disclose methods for filtering whilst cooling inhaled smoke. Those methods are provided useful by utilizing the filter-cooler as defined herein above and after.

Another object of the invention is to disclose a filter-cooler for a hand-rolled cigarette, characterized by an elongated either polygonal or cylindrical envelope having a main longitudinal axis, the envelope having external surface and internal surface; wherein at least one portion of at least one of the surfaces comprises one or more helical threads configured to provide the inhaled smoke with at least two turbulent flow around the main longitudinal axis, namely, at least one clockwise first flow and at least one second counter clockwise flow, the threads selected from (a) externally protruding ridges, i.e., male or external threads, convex shape raised strips, buffers and fins; (b) internally protruding recesses, i.e., female or internal threads, convex shape soaked slots; and, (c) both the externally and internally threads.

Another object of the invention is to disclose a filter-cooler for a hand-rolled cigarette, characterized by an elongated either polygonal or cylindrical envelope having a main longitudinal axis with a distal portion extending to the c cigarette, and a proximal opposite portion facing the smoker, the envelope having external surface and internal surface; the cylinder having a substantially circular cross section being perpendicular to the main longitudinal axis, the cross section having a first circumference extended from about 9' o'clock to about 3' o'clock ('upper portion'), and a second circumference extended from about 3' o'clock to about 9' o'clock ('lower portion'); the envelope is pierced by a plurality of apertures having a cross section being perpendicular to the main longitudinal axis; at least one of the following is being held true: at least 10% of the apertures are characterized by a polygonal cross section; the polygonal cross section is selected from a member of a group consisting of quadrilateral shape, including a rectangular and trilateral shape, including equilateral, isosceles, scalene, triangular and rectangled triangle ; the upper portion comprises at least 10% more apertures than the lower portion ; the distal portion comprises at least 10% more apertures than the proximal portion; and the proximal portion comprises at least 10% more apertures than the distal portion.

Another object of the invention is to disclose a filter-cooler for a hand-rolled cigarette, characterized by an elongated, either polygonal or cylindrical envelope having a main longitudinal axis with a distal portion extending to the cigarette, and a proximal opposite portion facing the smoker, the envelope having external surface and internal 11 surface; the cylinder having a substantially circular cross section being perpendicular to the main longitudinal axis, the cross section having a first circumference extended from about 9' o'clock to about 3' o'clock ('upper portion'), and a second circumference extended from about 3' o'clock to about 9' o'clock ('lower portion'); the envelope is pierced by a plurality of apertures having a cross section being perpendicular to the main longitudinal axis; at least one of the following is being held true: the distal end is truncated so that an open bore is provided throughout the envelope up from the distal end to the proximal portion ; the distal end is at least partially closed ; the close distal end is pierced by one or more apertures having a polygonal cross section; the close distal end comprises one or more apertures at its upper portion whilst it is intact, namely does not comprise apertures at its lower portion ; the close distal end comprises at its upper portion either 10% more apertures or 10% more aperture (pierced hence open) surface than at its lower portion ; the polygonal cross section is selected from a member of a group consisting of quadrilateral shape, including a rectangular and trilateral shape, including equilateral, isosceles, scalene, triangular and rectangled triangle; and the upper portion comprises at least 10% more apertures than the lower portion .

Another object of the invention is to disclose a filter-cooler as defined in any of the above, wherein the either polygonal or cylindrical envelope having a main longitudinal axis is coil-wounded to form a screw-like outer, inner or both outer & inner coiled body .

Another object of the invention is to disclose a filter-cooler as defined in any of the above, wherein the envelope is an open bored primary filter accommodating at least one secondary filer .

Another object of the invention is to disclose a filter-cooler as defined in any of the above, secondary filter is selected from a group consisting of continuous matter, purposive matter, particulated matter, granulated matter, fibrous matter, and tablated (being either pressed or condensed) matter .

Another object of the invention is to disclose a filter-cooler as defined in any of the above, the secondary filtering matter is selected from inorganic materials, organic materials, composite materials, mixtures and combinations thereof . 12 Another object of the invention is to disclose a filter-cooler as defined in any of the above, secondary filter comprises a member of a group consisting of esterifying bleached cotton, wood pulp with acetic acid, including those with DS ranging from 2.35 to 2.55, flavoring agents, sweeteners, softeners, flame retardants, colorants, glues, adhesives; cellulose ester, including cellulose acetate and impregnated cellulose esters with dicarboxylic acid, polycarboxylic acid and their anhydrides, and propionic acid polyethylene glycol, triethyleneglycol diacetate, glycerin compounds, diacetate of polyethylene glycol, polyalkylene oxide, lower fatty acid esters of multivalent alcohols, polyethylene glycol, and the like; paper or activated charcoal (either as a cavity filter or embedded into the cellulose acetate), macroporous phenol- formaldehyde resins and asbestos; and polyvalent metal salt of an acid selected from among organic and inorganic acids.

Reference is now made to figures 2 and 3 presenting in an out of scale manner a filter- cooler for a hand-rolled cigarette, characterized by an elongated either polygonal or cylindrical envelope having a main longitudinal axis, the envelope having external surface and internal surface; wherein at least one portion of at least one of the surfaces comprises one or more helical threads configured to provide the inhaled smoke with at least one turbulent flow around the main longitudinal axis, the threads selected from (a) externally protruding ridges, i.e., male or external threads, convex shape raised strips, buffers and fins; (b) internally protruding recesses, i.e., female or internal threads, convex shape soaked slots; and, (c) both the externally and internally threads.

A filter-cooler for a hand-rolled cigarette, characterized by an elongated either polygonal or cylindrical envelope having a main longitudinal axis, is also disclosed.

The envelope having external surface and internal surface; wherein at least one portion of at least one of the surfaces comprises one or more helical threads configured to provide the inhaled smoke with at least two turbulent flow around the main longitudinal axis, namely, at least one clockwise first flow and at least one second counter clockwise flow, the threads selected from (a) externally protruding ridges, i.e., male or external threads, convex shape raised strips, buffers and fins; (b) internally protruding recesses, i.e., female or internal threads, convex shape soaked slots; and, (c) both the externally and internally threads. 13 A filter-cooler for a hand-rolled cigarette, characterized by an elongated either polygonal or cylindrical envelope having a main longitudinal axis with a distal portion extending to the c cigarette, and a proximal opposite portion facing the smoker, is also disclosed. The envelope having external surface and internal surface; the cylinder having a substantially circular cross section being perpendicular to the main longitudinal axis, the cross section having a first circumference extended from about 9' o'clock to about 3' o'clock ('upper portion'), and a second circumference extended from about 3' o'clock to about 9' o'clock ('lower portion'); the envelope is pierced by a plurality of apertures having a cross section being perpendicular to the main longitudinal axis; at least one of the following is being held true: at least 10% of the apertures are characterized by a polygonal cross section; the polygonal cross section is selected from a member of a group consisting of quadrilateral shape, including a rectangular and trilateral shape, including equilateral, isosceles, scalene, triangular and rectangled triangle ; the upper portion comprises at least 10% more apertures than the lower portion ; the distal portion comprises at least 10% more apertures than the proximal portion; and the proximal portion comprises at least 10% more apertures than the distal portion. A filter-cooler for a hand-rolled cigarette, characterized by an elongated, either polygonal or cylindrical envelope having a main longitudinal axis with a distal portion extending to the cigarette, and a proximal opposite portion facing the smoker is also disclosed. The envelope having external surface and internal surface; the cylinder having a substantially circular cross section being perpendicular to the main longitudinal axis, the cross section having a first circumference extended from about 9' o'clock to about 3' o'clock ('upper portion'), and a second circumference extended from about 3' o'clock to about 9' o'clock ('lower portion'); the envelope is pierced by a plurality of apertures having a cross section being perpendicular to the main longitudinal axis; at least one of the following is being held true: the distal end is truncated so that an open bore is provided throughout the envelope up from the distal end to the proximal portion ; the distal end is at least partially closed ; the close distal end is pierced by one or more apertures having a polygonal cross section; the close distal end comprises one or more apertures at its upper portion whilst it is intact, namely does not comprise apertures at its lower portion ; the close distal end comprises at its upper portion either 10% more apertures 14 or 10% more aperture (pierced hence open) surface than at its lower portion ; the polygonal cross section is selected from a member of a group consisting of quadrilateral shape, including a rectangular and trilateral shape, including equilateral, isosceles, scalene, triangular and rectangled triangle; and the upper portion comprises at least 10% more apertures than the lower portion. A filter-cooler wherein its polygonal or cylindrical envelope is having a main longitudinal axis is coil-wounded to form a screw-like outer, inner or both outer & inner coiled body is also disclosed. A filter-cooler as defined in any of the above is further disclosed wherein the envelope is an open bored primary filter accommodating at least one secondary filer .A filter-cooler as defined in any of the above is further disclosed wherein a secondary filter is selected from a group consisting of continuous matter, purposive matter, particulated matter, granulated matter, fibrous matter, and tablated (being either pressed or condensed) matter. A filter-cooler as defined in any of the above, is also disclosed, wherein a secondary filtering matter is selected from inorganic materials, organic materials, composite materials, mixtures and combinations thereof. Lastly, a filter-cooler as defined in any of the above is disclosed wherein a secondary filter comprises a member of a group consisting of esterifying bleached cotton, wood pulp with acetic acid, including those with DS ranging from 2.35 to 2.55, flavoring agents, sweeteners, softeners, flame retardants, colorants, glues, adhesives; cellulose ester, including cellulose acetate and impregnated cellulose esters with dicarboxylic acid, polycarboxylic acid and their anhydrides, and propionic acid polyethylene glycol, triethyleneglycol diacetate, glycerin compounds, diacetate of polyethylene glycol, polyalkylene oxide, lower fatty acid esters of multivalent alcohols, polyethylene glycol, and the like; paper or activated charcoal (either as a cavity filter or embedded into the cellulose acetate), macroporous phenol- formaldehyde resins and asbestos; and polyvalent metal salt of an acid selected from among organic and inorganic acids.

While certain features of the invention have been illustrated and described herein, many modifications, substitutions, changes, and equivalents will now occur to those of ordinary skill in the art. It is, therefore, to be understood that the appended claims are intended to cover all such modifications and changes as fall within the true spirit of the invention.

ABSTRACT The present invention discloses methods of filtering and cooling and a filter-cooler for a hand-rolled cigarette. The filter-cooler is characterized, according to a few embodiments of the invention, by an elongated either polygonal or cylindrical envelope having a main longitudinal axis. The envelope having external surface and internal surface. At least one portion of at least one of the surfaces comprises one or more helical threads configured to provide the inhaled smoke with at least one turbulent flow around the main longitudinal axis. The threads are selected from externally protruding ridges, i.e., male or external threads, convex shape raised strips, buffers and fins; internally protruding recesses, i.e., female or internal threads, convex shape-soaked slots; and, both externally and internally threads. ,םיאיצממה םשב פ"ועו ד"וע ,רלסרב ליא 'רד 19

Claims (10)

1. A filter-cooler for a hand-rolled cigarette, characterized by an elongated either polygonal or cylindrical envelope having a main longitudinal axis, said envelope having external surface and internal surface; wherein at least one portion of at least one of said surfaces comprises one or more helical threads configured to provide the inhaled smoke with at least one turbulent flow around said main longitudinal axis, said threads selected from (a) externally protruding ridges, i.e., male or external threads, convex shape raised strips, buffers and fins; (b) internally protruding recesses, i.e., female or internal threads, convex shape soaked slots; and, (c) both said externally and internally threads.

2. A filter-cooler for a hand-rolled cigarette, characterized by an elongated either polygonal or cylindrical envelope having a main longitudinal axis, said envelope having external surface and internal surface; wherein at least one portion of at least one of said surfaces comprises one or more helical threads configured to provide the inhaled smoke with at least two turbulent flow around said main longitudinal axis, namely, at least one clockwise first flow and at least one second counter clockwise flow, said threads selected from (a) externally protruding ridges, i.e., male or external threads, convex shape raised strips, buffers and fins; (b) internally protruding recesses, i.e., female or internal threads, convex shape soaked slots; and, (c) both said externally and internally threads.

3. A filter-cooler for a hand-rolled cigarette, characterized by an elongated either polygonal or cylindrical envelope having a main longitudinal axis with a distal portion extending to said c cigarette, and a proximal opposite portion facing the smoker, said envelope having external surface and internal surface; said cylinder having a substantially circular cross section being perpendicular to said main longitudinal axis, said cross section having a first circumference extended from about 9' o'clock to about 3' o'clock ('upper portion'), and a second circumference extended from about 3' o'clock to about 9' o'clock ('lower portion'); said envelope is pierced by a plurality of apertures having a cross section being perpendicular to said main longitudinal axis; at least one of the following is being held true: a. at least 10% of said apertures are characterized by a polygonal cross section; 16 b. said polygonal cross section is selected from a member of a group consisting of quadrilateral shape, including a rectangular and trilateral shape, including equilateral, isosceles, scalene, triangular and rectangled triangle; c. said upper portion comprises at least 10% more apertures than said lower portion; d. said distal portion comprises at least 10% more apertures than said proximal portion; and e. said proximal portion comprises at least 10% more apertures than said distal portion.

4. A filter-cooler for a hand-rolled cigarette, characterized by an elongated, either polygonal or cylindrical envelope having a main longitudinal axis with a distal portion extending to said cigarette, and a proximal opposite portion facing the smoker, said envelope having external surface and internal surface; said cylinder having a substantially circular cross section being perpendicular to said main longitudinal axis, said cross section having a first circumference extended from about 9' o'clock to about 3' o'clock ('upper portion'), and a second circumference extended from about 3' o'clock to about 9' o'clock ('lower portion'); said envelope is pierced by a plurality of apertures having a cross section being perpendicular to said main longitudinal axis; at least one of the following is being held true: a. the distal end is truncated so that an open bore is provided throughout said envelope up from the distal end to said proximal portion; b. the distal end is at least partially closed; c. the close distal end is pierced by one or more apertures having a polygonal cross section; d. the close distal end comprises one or more apertures at its upper portion whilst it is intact, namely does not comprise apertures at its lower portion; e. the close distal end comprises at its upper portion either 10% more apertures or 10% more aperture (pierced hence open) surcface than at its lower portion; f. said polygonal cross section is selected from a member of a group consisting of quadrilateral shape, including a rectangular and trilateral 17 shape, including equilateral, isosceles, scalene, triangular and rectangled triangle; and g. said upper portion comprises at least 10% more apertures than said lower portion.

5. The filter-cooler as defined in any of claims 1-4 and its dependent claims, wherein said either polygonal or cylindrical envelope having a main longitudinal axis is coil-wounded to form a screw-like outer, inner or both outer & inner coiled body.

6. The filter-cooler as defined in any of claims 1-4 and its dependent claims, wherein said envelope is an open bored primary filter accommodating at least one secondary filer.

7. The filter-cooler of claim 6, wherein said secondary filter is selected from a group consisting of continuous matter, purposive matter, particulated matter, granulated matter, fibrous matter, and tablated (being either pressed or condensed) matter.

8. The filter-cooler of claim 7, wherein said secondary filtering matter is selected from inorganic materials, organic materials, composite materials, mixtures and combinations thereof.

9. The filter-cooler of claim 7, wherein said secondary filter comprises a member of a group consisting of esterifying bleached cotton, wood pulp with acetic acid, including those with DS ranging from 2.35 to 2.55, flavoring agents, sweeteners, softeners, flame retardants, colorants, glues, adhesives; cellulose ester, including cellulose acetate and impregnated cellulose esters with dicarboxylic acid, polycarboxylic acid and their anhydrides, and propionic acid polyethylene glycol, triethyleneglycol diacetate, glycerin compounds, diacetate of polyethylene glycol, polyalkylene oxide, lower fatty acid esters of multivalent alcohols, polyethylene glycol, and the like; paper or activated charcoal (either as a cavity filter or embedded into the cellulose acetate), macroporous phenol- formaldehyde resins and asbestos; and polyvalent metal salt of an acid selected from among organic and inorganic acids.

10. A method for filtering whilst cooling inhaled smoke comprising step of utilizing the filter-cooler as defined in any of claim 1 to 9. 18