US3538924A - Cigarette filter - Google Patents

Description

United States Patent [72] Inventor Cornelishlruvsers 517 Fruitvale Ave., .Yuba City, California 95991 [21] AppLNo. 681,778 [22] Filed Nov. 9, 1967- [45] Patented Nov. 10,1970

[54] CIGARETTE FILTER 1 Claim, 3 Drawing Figs. s21'u.s.c| 131/261, 131/10.1,l31/173 [51] lnt.Cl ..A24f25/00, A24d H06 [50] FleldofSearch l31/10.1, 10.7,10.9,173,261,261(B),265

[56] References Cited UNITED STATES PATENTS 941,019 11/1909 lrving..... 131/261 1,826,331 10/1931 Traube... 131/10.9X 2,795,227 6/1957 Seldeen 131/109 3,125,100 3/1964 Jany 131/261 3,250,280 5/1966 Hu 131/10.1X

FOREIGN PATENTS 1,093,418 ll/l954 France 131/265 833,801 4/1960 61123131113111... 131/10] 383,144 11/1932 GreatBritain 131/261 Primary Examiner-Joseph S. Reich ends of the cartridge when one section is tapped toward the 1 other. The discs have smoke passing apertures such that smoke passing through the hollow projections can pass through the discs.

CIGARETTE FILTER This invention relates generally to cigarette filters. More specifically it relates to cigarette filters having self-contained cartridges.

A principal object of the present invention is to provide a cigarette filter which includes a filter cartridge which may be discarded together with the used cigarette.

Other objects of the present invention are to provide a cigarette filter wherein the cartridge may be kept in an air and moisture proof condition prior to use, even though positioned within the holder.

Yet a further object of the present invention is to provide a cigarette filter wherein the cartridge may be activated for operative use by simply tapping the interfitting sections together, the sections having self-contained means for piercing the opposite ends of the cartridge and thus expose the substance therewithin to smokebeing drawn through the filter.

These and other objects will be readily evident upon a study of the following specificationand the accompanying drawing wherein:

FIG. 1 is a perspective view of the present invention; FIG. 2 is a cross-sectional view taken on the line 2-2 of FIG.

FIG. 3 is a cross-sectional view similar to FIG. 2 and showing the parts separated.

Referring now to the drawing in detail, the reference numeral l representsa cigarette filter according to the present invention wherein there are a pair of interfitting sections 11 and 12. A cartridge 13 is positioned therebetween, the cartridge containing silica gel or other equivalent material for absorbing nicotine, tars or other harmful substances from cigarette smoke.

The first section 11 comprises a cylindrical member made from plastic or stiff paper, the first section containing a short white fiber filter 14 such as is commonly used in filter cigarettes. Adjacent the filter 14 there is a disc 15 positioned within the cylinder of section 11, the disc being provided with a plurality of projections 16 upon one side which are pointed at their ends, each of the projections having a central opening 17 therethrough that extends through the disc 15.

'The second section 12 is of a like construction including a cylinder 18 having short white fiber filter l4 and disc 15 the cylinder of the second section telescopes over the cylinder of the first section. It is to be further noted that each of the discs are located within their respective cylinders in a manner whereby the projections point toward each other as is shown in FIG. 2 of the drawing.

The cartridge 13 is made out of an aluminum foil cover 19 which encloses the silica gel 20. Prior to actual use, the cartridge is hermetically sealed from the air so that moisture cannot gain entrance thereinto.

ln operative use, the cartridge may be activated by simply tapping one end of the filter, thus causing the projections 16 to pierce the aluminum foil 19 of the cartridge and thus expose the silica gel. A conventional cigarette is fitted over one of the ends of the device and lighted. Smoke is then drawn through the filter, the smoke passing through the openings 17 of the discs and through the punctured openings caused by the projections in the aluminum foil and through the silica gel.

Thus there has been provided a construction wherein a cartridge may be maintained in a sealed condition until ready for actual use and which can be made activated in a relatively simple manner.

The cigarette together with its permanently fixed filter cartridge is discarded after being smoked.

While various changes may be made in the detailed construction, it is understood that such changes will be within the spirit and scope of the present invention as is defined by the appended claim.

claim:

1. In a cigarette filter, the combination of a pair of sections, said sections being slidably interfitting relative to each other, and a sealed cartridge containing silica gel being positioned between said sections, each of said sections comprising a cylindrical case, a short white fiber filter forming a closure at each end thereof, a circular disc adjacent to each filter, each circular disc having self-contained means for puncturing said cartridge, said disc comprising a plurality of projections extending from one side thereof, each of said projections being tapered toward a terminal end, and each of said projections having a central opening extending therethrough and through the body of said disc to allow cigarette smoke to pass therethrough, the terminal end of each said projection defining a sharp circular edge around said opening, said cartridge comprising a member formed of an aluminum foil covering which encloses said silica gel therewithin, and each of said projections of said discs being-pointed toward an end of said cartridge positioned between said first and said second section.

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