Abstract: A clean air apparatus includes a fan and a filter for producing a flow of clean air and for discharging the clean air from an outlet and towards a target clean area. The apparatus includes a Coanda effect device disposed at least adjacent the clean air means, which is arranged, in use, to induce a Coanda effect upon the flow of clean air. The apparatus includes guide means for guiding the clean air towards a target clean area in the form of an air curtain. A method for discharging clean air towards a target clean area in the form of an air curtain includes inducing a Coanda effect upon the flow of clean air using the Coanda effect device; and guiding the discharged clean air, downstream of the Coanda effect device, towards a target clean area in the form of an air curtain.

Abstract: Wounds dressings, systems, and methods are presented for removing liquid from a wound site into a dressing and moving air through the dressing to evaporate at least a portion of the removed liquid. The air is moved in one instance by a Coanda device incorporated into the dressing. Other systems, dressings, and methods are presented.

Abstract: A device for pneumatically conveying and guiding a multifilament thread has a closed conveying channel which has a thread inlet opening at one end and a thread outlet opening at the opposite end. An injector zone having at least one compressed air channel which opens into the conveying channel is formed between the thread inlet opening and the thread outlet opening, wherein the compressed air channel can be connected to a compressed air source. In order to avoid blowing air from flowing back from the injector zone at the thread inlet opening, a return flow channel is formed in a channel section of the conveying channel between the thread inlet opening and the opening of the compressed air channel, which return flow channel connects the conveying channel to ambient atmosphere.

Abstract: Centrifugal turbomachines, such a centrifugal compressors, centrifugal blower, and centrifugal pumps, having unique treatments that enhance their performance ranges. In one arrangement, the treatment involves injecting a relatively high-momentum flow proximate to the blade-tip clearance gap at the inlet to the impeller of the turbomachine in a manner that reenergizes flow at the gap. The injected high-momentum flow can be taken from a location downstream of the outlet of the impeller and/or from a flow external to the turbomachine. In another arrangement, the non-self-bleed-type treatment involves providing the centrifugal turbomachine with a secondary flow path upstream of the inlet to the impeller. In one example, the flow of working fluid to the secondary flow path is modulated according to the mass flow of the working fluid. During times of higher flow, the secondary flow path is opened, and at times of lower flow, the secondary flow path is closed.

Abstract: A smoking article having a tobacco rod of a smokable material and a filter system attached to the tobacco rod of smokable material. The filter system includes a first filter portion and a second filter portion, the second filter portion concentrically positioned with respect to the first filter portion and having a lower resistance to draw than the first filter portion during an initial puff on the smoking article. The second filter portion closes upon contact with the mainstream smoke of the initial puff, such that after the initial puff, the first filter portion has the lower resistance to draw.

Abstract: Disclosed is a method for forming an article with template shaped channels by (a) mixing a precursor with a fibrous template, (b) forming the mixture into a pre-determined shape, (c) curing the mixture to form a precursor composite, (d) carbonizing the precursor composite, and (e) decomposing the fibrous template to yield a shaped carbon article with template shaped channels.

Abstract: A filter element incorporating an adsorbent material is provided. The filter element may comprise a first section of filter material and a second section of filter material spaced apart to form a compartment therebetween. The compartment may be filled with one or more adsorbents or the compartment may be divided into two regions, wherein one compartment region is filled with an adsorbent and the other compartment region is either filled with an ion-exchange resin or remains empty. The section of filter material adjacent to the tobacco rod may include one or more channels therethrough for passaging smoke directly from the tobacco rod into the adsorbent-filled compartment. The mouth end section of filter material may contain a breakable capsule, wherein the breakable capsule is filled with a flavoring agent capable of altering the taste characteristics of mainstream smoke.

Abstract: The present invention is a small bubble generator in a water stage cleaning and cooling a smoke filled air stream. A demister is a second embodiment of the invention to remove entrained water droplets from a cleaned and cooled smoke filled air stream issuing from the water stage.

Abstract: The present invention pertains to the tobacco industry and may be used in the production of smokers' articles that include a mouthpiece and consist of a new product that conjugates the functional properties and qualities of cigarettes with a cardboard mouthpiece and of filter cigarettes. To this end, this smokers' article comprises a tobacco rod wrapped in a separate sleeve of cigarette paper as well as a flexible and elongated mouthpiece which is connected to said rod and has the size of a cardboard mouthpiece. The mouthpiece is made of a pressed fibrous material and includes a filter member, which is arranged on the tobacco rod side, which is integral with the tubular portion of the mouthpiece and which is made in the shape of a continuous cylinder having a diameter equal to that of the mouthpiece tubular portion. The tobacco rod is connected to the mouthpiece by a paper ring.

Abstract: A cigarette holder for extracting tar has first tar extractor with a stick and a first disc with apertures. A second tar extractor has a cylinder fitted to the stick and a second disc provided on one end of the cylinder and fitted in a flue of transparent resin. Smoke collision portions in the flue face the apertures. Smoke is compressed and accelerated when it passes through the apertures and expands again to collide with the smoke collision portions. It then collides with the second disc. Then the smoke is compressed and accelerated when it passes through the outer circumference of the second disc and the flue. Tar is extracted at each stage and the smoke is cooled by the second tar extractor before it reaches a mouth piece of the holder.

Abstract: The invention is a tar retention device for insertion in the smoke path of a cigarette between the point of combustion and the smoker. The device is comprised of a chamber with an inlet duct formed on the side of the point of combustion and outlet side facing the smoker. The inlet duct is narrower than the outlet duct and each duct tapers towards their respective ends inside of the chamber. The difference in dimensions of the inlet and outlet ducts creates a hypobaric action within the chamber causing the deposition of tar within the chamber.

Abstract: A tobacco smoke containment apparatus and method therefor having the characteristics of limiting the exhaust of harmful smoke particles as well as reducing the overall risk of accidental fire by containing a smoking tobacco product inside a closed receptacle.

Abstract: A cigarette-holder is disclosed which is provided with a filter member as well as with a device for regulating draught, which device allows the amount of nicotine inhaled to be progressively reduced. The device comprises a small metallic pipe that holds, on one end, the cigarette. The pipe is inserted with the opposite end into the cigarette-holder containing a filter member. The filter member is made up of a small hollow cylinder of diameter less than the pipe diameter, and it obstructs the smoke flow into the cigarette-holder by leaving just a small through-hole and delimits an annular space wherein smoke becomes further cooled before being inhaled. The filter is also made up of a bowl-like plugging member that reduces the outlet cross section of the holder. The bottom of the bowl-like plugging member faces the end of the pipe containing the cigarette. The plugging member has cuts in its side wall and a peg-like terminal portion in its bottom.

Abstract: A smoke retention device having a collapsible chamber and an insert threadable into said collapsible chamber for holding a combustible material. A bag is secured over one end of the chamber and held in place by an elastic band. Valve mechanisms allow the user to draw air through the insert said air being directed through the combustible material and exhaling air back to the insert said exhaled air being directed through a second aperture back into the container.

Abstract: A smoke catcher device which catches essentially 100% of secondary smoke products such as cigarettes, cigars and pipes. The device comprises a housing having an interior space. The smoke product is installed in the housing such that the burning end of the product is in the interior space and the lip end is on the ouside of the housing. The housing also comprises a smoke intake opening and an exhaust port. The secondary smoke is exhausted through an appropriate filter system or to a smoke dump place. In use a smoker sucks smoke through the lip end of the smoke product and exhales the smoke into the smoke intake opening.

Abstract: The mouth-piece comprises a tubular body which accommodates a filter element which defines, with the inner walls of the tubular body, a first collection chamber for the combustion products, while a second collection chamber for the condensation products is defined in the same tubular body by a slot which extends into the tubular body and is rigidly connected thereto. The filter element has a nucleus of truncated cone shape, which is completely inserted inside the tubular body and has a face in abutment with the end of a cigarette.

Abstract: A smoker's pipe that includes a hollow shank, a bowl assembly mounted at one end of the shank and a bit connected to the other end of the shank. The pipe also comprises in one embodiment a flow separator which respectively directs the smoke and liquid components of the smoke fluid into a gaseous smoke conduit and a liquid conduit, part of each conduit being in the shank and part of each conduit being in the bit. Also included is a rotatable connector that sealingly connects the two parts of each conduit together, yet also permits relative rotation of the bit and shank.

Abstract: The outer shell of a removable smoke filtering cartridge for fitting inside a cigarette holder is formed from two coaxially abutting tubes separated by a wall with a hole. A tubular inner lip around the hole extends into the space within the first tube, a trough being defined around this lip. A cup is mounted within the first tube remote and facing away from the wall, intercepting across the first tube except for one or more narrow spaces defined between the cup and the first tube inner wall. The parts of these narrow spaces nearer the wall communicate to the space between the cup and the wall. One or more small apertures are formed through the side wall of the cup and communicate the space within the cup to the narrow spaces. A disk is mounted across the first tube against the side of the cup remote from the wall.

Abstract: A cigarette holder body terminates at one end in a hollow mouthpiece which opens to a pair of cylindrical passages one of which holds the unlit end of the cigarette while the other holds a smoke catcher cartridge. One way flap valves are interposed between the unlit end of the cigarette and the mouthpiece and downstream of the smoke catcher cartridge which automatically open and close oppositely such that during inhaling smoke passes through the first passage to the smoker while, during exhaling smoke is forced to pass through the other passage bearing the smoke catcher cartridge. The body may comprise a hinged two-part plasting molding snap latched to closed position and bearing integral opening tabs on respective body halves.

Abstract: A mouthpiece which comprises two filters for purifying tobacco smoke: a rough purification filter and a fine purification filter. The rough purification filter is intended to convert the resin vapors contained in the smoke into a liquid and to settle down the vapors on the inner surface of the body, and the fine purification filter is fabricated from a porous sintered metal material catching up to 80 per cent of the toxic agents.