US3330284A - Filtration means for filter cigarettes - Google Patents

Description

F. P. SEMAN ETAL 3,330,284

FILTRATION MEANS FOR FILTER CIGARETTES Filed May 21, 1964 July 11, 1967 l4 IO 20 n5 I14. 15 I5 FIG. 3 F|G.5

FIGJ} INVENTORS' FREDRICK P. SEMAN DAVID O. GLENN BY CONSTANTIN GOOSSEV' United States Patent 3,330,284 FILTRATION MEANS FOR FILTER CIGARETTES Frederick P. Seman, 607 Hardscrabble Road 16505;

David 0. Glenn, 321 W. th St. 16507; and Constantin Goossev, 737 E. 9th St. 16501, all of Erie, Pa.

Filed May 21, 1964, Ser. No. 369,134 3 Claims. (Cl. 13110.5)

This invention concerns a barrier in a cigarette which may be used with or without a filter tip. This invention relates to an aerodynamic and heat radiant device in a cigarette through which smoke changes its temperature, speed, humidity, and creates pressure turbulence to remove undesirable substances from the smoke.

According to the invention, there is provided a cigarette with a tip applied to one end. The tip may be formed as a tubular member secured to the cigarette. The tubular member is cylindrical in shape and has a porous material therein which serves as an absorber of nicotine, tars, and solid particles from the tobacco smoke passing through our disk. The filter tip renders the cigarette cleaner and more comfortable to hold in the mouth than a cigarette having an ordinary bare tip.

The porous filter material may be made of various vegetable or synthetic materials and may be made of such materials as synthetic fibers, fiberglass, rock wool, cellulose, charcoal activated powdered material such as kaolin or the like.

It is, accordingly, an object of the present invention to provide a cigarette with a smoke barrier employing the filter as an absorbent material for tar and liquids deposited in the process of passing through small slots.

Another object of the invention is to provide a filtration device employing heat radiant and aerodynamic principles.

Another object of this invention is to provide a barrier which will remove the objectionable tar and foreign matter.

Another object of this invention is to employ a white and shiny reflective material which holds the heat back from the mouth end.

With the above and other objects in view, the present invention consists of the combination and arrangements of parts hereinafter more fully described, illustrated in the accompanying drawing and more particularly pointed out in the appended claims, it being understood that changes may be made in the form, size, proportions, and minor details of construction without departing from the spirit or sacrificing any of the advantages of the invention.

In the drawing:

FIG. 1 is a longitudinal partial cross sectional view of a cigarette according to the invention;

FIG. 2 is a view taken on line 2-2 of FIG. 1;

FIG. 3 is a view taken on line 33 of FIG. 2;

FIG. 4 is a view similar to FIG. 2, of another embodiment of the unique filter disk; and

FIG. 5 is a view taken on line 55 of FIG. 4.

Now with more particular reference to the drawing, the cigarette shown has a paper wrapper 11 of a conventional type with tobacco 12 therein.

3,330,284 Patented July 11, 1967 The filter body indicated at 18 is attached to the paper in the usual manner and has the filter material 13 therein which may be of the materials referred to, such as synthetic fibers, fiberglass, rock wool, cellulose, activated charcoal powder, or the like.

A second disk 14 may be spaced from the first filter 14 with filter material 13" therebetween. The disks themselves may be made of porous cardboard material sandwiched between plastic coatings 20 and 20'. The cardboard material itself may be absorbent of noxious materials such as tars and otherwise. The disks 14 themselves may be between A and X in thickness to accomplih optimum results, although other thicknesses will function successfully.

It has been discovered that the V-shaped notches cause the smoke passing therethrough adjacent the center to have a higher velocity than that near the outer periphery; therefore, since the smoke adjacent their outer periphery travels around a longer path, the net velocity of the smoke in the center and the outside periphery is approximately equal.

While four slots are shown, the slots could be any number between one and six. It has been discovered that if slots in excess of ix are used, the effect is minimized.

The disk 14 may be of a suitable white material such as, for example, plasticizer cardboard, plastic or the like, and it has the radially extending sharp V-shaped notches 15 cut therein. These sharp notches are cut at an angle as shown in FIG. 3 so that they give smoke a swirling or spiral action and give it a higher velocity adjacent the center than at the outside due to the V-shaped notches and the fact that they are wider at the outside than adjacent the center. The smoke passes through these notches in spiral ribbons with the ribbon thinner adjacent the center due to the notch shapes.

In the embodiment of the invention shown in FIGS. 4 and 5, the disk shown can be used with the cigarette shown in FIG. 1. Instead of the spiral V-shaped notches, rectangular shaped notches 114 and 115 are cut in the disk extending radially outwardly. These notches extend approximately half way from the periphery to the center of the disk. Thus, the smoke that comes through these notches comes through in ribbons of uniform thickness and smoke is diffused by the filter material and velocity changed drastically and, therefore, it causes the tar and nicotine to be filtered therefrom.

The filter material adjacent the disk may be impregnated with an aqueous solution of calcium chloride or some other hygroscopic material which will absorb some of the water vapor from the air and thereby remove it from the smoke.

The foregoing specification sets forth the invention in its preferred practical forms but the structure shown is capable of modification within a range of equivalents without departing from the invention which is to be understood is broadly novel as is commensurate with the appended claims.

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:

1. In combination, a cigarette and a filter and a disk disposed therebetween,

a 3 4 said disk being relatively thin and having radially ex- References Cited tending, circurnferentially spaced notches therein, i V UNITED STATES PATENTS said notches being adapted to pass smoke from sa d 7 t cigarette to said filter in spaced ribbons with the inr 879,796 2/1908 PlaPe 131 210 side of said ribbons spaced from the center of said 5 2,360,628 10/1944 Wnght 131216 X cigarette, said notches being defined by a pair of 2445476 7/1948 Folkman' confronting Wall portions each of which is inclined 236L219 1/1959 P 131 10 to the central axis of the cigarette and in a longi- 3,079,926 3/1963 Llttchfield et 131 10 tudinal direction thereof whereby smoke is directed 3,167,076 1/1965 F 1311O 'into said filter material a spiral path. 10 3,174,487 3/1965 Mlssler 131' 210 '2. The combination recited in claim 1 wherein FOREIGN PATENTS said notches terminate midway between the periphery 436,432 10/1935 Great Britain;

of said disk and the center thereof. 3. The combination recited in claim 1 wherein SAMUEL KOREN, Primary Examiner.

7 said filter is impregnated With a hygroscopic material. 15 JOSEPH S, REICH; Exrtminer.

Claims (1)

1. IN COMBINATION, A CIGARETTE AND A FILTER AND A DISK DISPOSED THEREBETWEEN, SAID DISK BEING RELATIVELY THIN AND HAVING RADIALLY EXTENDING, CIRCUMFERENTIALLY SPACED NOTCHES THEREIN, SAID NOTCHES BEING ADAPTED TO PASS SMOKE FROM SAID CIGARETTE TO SAID FILTER IN SPACED RIBBONS WITH THE INSIDE OF SAID RIBBONS SPACED FROM THE CENTER OF SAID CIGARETTE, SAID NOTCHES BEING DEFINED BY A PAIR OF CONFRONTING WALL PORTIONS EACH OF WHICH IS INCLINED TO THE CENTRAL AXIS OF THE CIGARETTE AND IN A LONGITUDINAL DIRECTION THEREOF WHEREBY SMOKE IS DIRECTED INTO SAID FILTER MATERIAL IN A SPIRAL PATH.

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