US3416541A - Cigarette filter - Google Patents

Cigarette filter Download PDF

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Publication number
US3416541A
US3416541A US50487965A US3416541A US 3416541 A US3416541 A US 3416541A US 50487965 A US50487965 A US 50487965A US 3416541 A US3416541 A US 3416541A
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Prior art keywords
filter
cigarette
smoke
portion
moisture
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Expired - Lifetime
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Jr Andrew C Hoover
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Andrew C. Hoover Jr.
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    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SMOKERS' REQUISITES
    • A24DCIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00Tobacco smoke filters, e.g. filter-tips, filtering inserts; Mouthpieces for cigars or cigarettes
    • A24D3/04Tobacco smoke filters characterised by their shape or structure
    • A24D3/045Tobacco smoke filters characterised by their shape or structure with smoke acceleration means, e.g. impact-filters

Description

Dec. 17, 1968 A. c. HOOVERJR CIGARETTE FILTER Filed Oct. 24. 1965 IN VENTOR. Ali/095W C. #00 VA? JR.v

A T TOR/VF Y 3,416,541 CIGARETTE FILTER Andrew C. Hoover, Jr., 1112 N. Washington, Tacoma, Wash. 98406 Filed Oct. 24, 1965, Ser. No. 504,879 3 Claims. (Cl. 131-266) ABSTRACT OF THE DISCLOSURE A cigarette smoke filter is added to a cigarette during manufacture and, if not, it is subsequently fitted to an end of a cigarette, extending the longitudinal configuration of a cigarette to include a moisture chamber composed of an outer space which surrounds a central passageway that is interconnected to the outer space by radial passageways, and beyond the moisture chamber, further extending the resulting overall cigarette assembly, are a charcoal filter and a cellulose filter.

This invention pertains to filters for eliminating harmful tobacco ingredients otherwise carried by smoke to be inhaled by a cigarette smoker.

The purpose of the invention is to provide a cigarette filter which successfully eliminates most harmful tobacco ingredients from smoke before it reaches the mouth of a smoker by causing cigarette smoke to vaporize moisture, to pickup moisture and upon cooling down to deposit tar.

This effective smoke moistening cigarette filter is constructed and operated, both as an auxiliary accessory to be fitted by a smoker to each of his cigarettes and as an integral part of the manufactured cigarette.

A preferred embodiment of this cigarette filter, serving as an accessory or cigarette holder, is illustrated in the drawing wherein:

FIGURE 1 is a perspective view of a cigarette filter with portions removed to show its interior, without moisture added, and its alignment for attachment to a cigarette which is partially illustrated;

FIGURE 2 is a side view of a cigarette filter of FIG- URE l, with additional portions removed to show, with arrows, the flow of smoke from a cigarette, shown in part, through the filter and into the mouth of a person, whose face and hand are indicated in dotted lines; and

FIGURE 3 is a cross sectional view through the moisture chamber of the filter of FIGURES 1 and 2, taken along line 3-3 of FIGURE 2, indicating a liquid level and arrangement of fluid passages.

The cigarette filter illustrated in these FIGURES 1, 2 and 3 is arranged as an accessory or holder to be added to a cigarette, but as noted previously its structure is adaptable to its inclusion in a cigarette during manufac turing. In whatever precise structure, the filter may be presented, its functioning will be as indicated in the following detailed description of this illustrated embodiment.

The body 10 or shell of filter 12 is of tube construction with its inside diameter at a cigarette receiving end 14 being large enough to grip a cigarette end 16. Such end 16 is inserted partially into filter 12, making an overall assembly of a filtered cigarette. This assembly is thereafter handled by a smoker through his finger grip of filter 12. He then utilizes the overall assembly of filter 12 and cigarette 18 in like manner to his use of any cigarette, but thereafter having the benefit of a filtering action of this filter 12.

Besides first cigarette receiving end portion 14, filter 12 has three basic additional portions. The second portion 22 of these located beyond cigarette end 16, confronts cigarette smoke to control its flow, in, around, through, and out of this second portion 22 which is partially filled with a liquid 24. The third portion 28 is an in line charnited States Patent Patented Dec. 17, 1968 ice coal filtering unit 30. The fourth portion 32 is an in line white cellulose filter 34. I

To make this in line arrangement of filtering agents very effective, second portion 22, has a major central tunnel 40 through its center which flares outwardly at each end to the inside diameter of filter 12 forming a funnel entry 42 and exit 44. At locations along tunnel 40 or conduit 40 are-radially directed passageways or nozzles 50. The nozzles project into an otherwise completely enclosed airy and moisture chamber 52, which is formed around conduit or tunnel 40 within body or shell 10 of filter 12 and terminated at each of its ends by funnel entry 42 and funnel exit 44.

Liquid 24, such as water, is stored in chamber 52 preferably at the illustrated level where it will remain regardless of positioning of filter 12. Nozzles 50 are not placed near any end of moisture filter section 22 so unassisted or unintentional moisture loss through dripping or direct flow is avoided.

As indicated by flow arrows in FIGURE 2, when a cigarette 18 is burning at one end 56, and is being smoke-d, smoke flows into funnel 42 entering tunnel 40 or conduit 40. While attempting to pass on through, sufficient volume of such flow is by-passed through nozzles 50 to warm and vaporize water 24 in moisture chamber 52. The vapor mixes with the smoke and resulting moisture laden nicotine and tars being dropped from the smoke stream and entrapped in filter portion 22. Additional moisture is carried by smoke returning through other follow on nozzles 50 resulting in mixing moisture throughout the entire flow of smoke through moisture filter section or portion 22.

When a smoker is not drawing on his filtered cigarette, smoke in conduit 40 enters the radial passageways or nozzles 50 and goes on into chamber 52 in the same manner that smoke fills all portions of a room when persons are extensively smoking, for example, in a conference room. Then when a smoker draws in smoke the venturi effect pulls moisture laden smoke from chamber 52 back through radial passageways or nozzles 50 and into conduit 40 further dampening all smoke passing directly through conduit 40 during the draw.

This dampened smoke is further filtered and dried as it is drawn through charcoal filter 30 and initially white cellulose filter 34. As the remaining moisture is further withdrawn, additional harmful ingredients entrained in and by the moisture are also removed. Smoke leaving this cigarette filter is drier and free of many portions of ingredients which are considered harmful in unfiltered smoke.

I claim:

1. A cigarette smoke filter having a body providing:

(a) an end portion for receiving the end of a cigarette,

(b) a second portion downstream from said end portion, said second portion including a central tunnel portion of reduced diameter and having outwardly flared end portions, the maximum diameter of the end portions substantially equalling the internal diameter of the filter body, said central tunnel portion providing with the filter body a chamber filled in part below its center with a liquid, said tunnel portion being further provided with radial passageways between the reduced diameter portion and the chamber wall to receive and guide smoke into the chamber whereby the smoke in the chamber is moisturized and then passes back into the central tunnel.

2. A cigarette filter, as claimed in claim 1, having (c) a further filtering portion downstream from said second portion for mechanically filtering the moisturized smoke.

3. A cigarette filter, as claimed in claim 2, wherein said further filter portion includes a third portion downstream from said second portion, said third portion containing charcoal particles and a final portion following said third 3,318,315 5/ 1967 Orter 131-17 3 X portion and including cellulose material. 3,318,316 5/1967 Banderas et a1. 131 10.7 X

Referenccs Cited UNITED STATES PATENTS 5 LUCIE H. LAUDENSLAGER, Przmary Exammer. 3,125,100 3/1964 Jany 131-173 X US. Cl. X.R.

3,251,365 5/1966 Keith 6161 131 10.7 3,315,687 4/1967 Menges 131-173X

US3416541A 1965-10-24 1965-10-24 Cigarette filter Expired - Lifetime US3416541A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3669128A (en) * 1970-11-09 1972-06-13 Joseph H Cohen Device for filtering tobacco smoke
FR2414330A1 (en) * 1978-01-12 1979-08-10 Cohen Fernand Crutch of adjustable length
EP0025280A1 (en) * 1979-09-10 1981-03-18 Imperial Chemical Industries Plc Electrostatically actuated valve
US5549124A (en) * 1988-08-29 1996-08-27 Dorsey; David A. Water filter for cigarettes
WO2004010803A1 (en) * 2002-07-26 2004-02-05 Semen Pogosyan A filter for smoking articles and a smoking article with that filter
CN105105331A (en) * 2015-09-22 2015-12-02 浙江凯实激光科技股份有限公司 Built-in type smoke purifying filter

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125100A (en) * 1964-03-17 Filter cartridge for cigarette holders
US3251365A (en) * 1963-03-04 1966-05-17 Ii Charles H Keith Tobacco smoke filter
US3315687A (en) * 1964-03-05 1967-04-25 Menges Curt Filter insert for cigarette holders and the like
US3318315A (en) * 1964-06-18 1967-05-09 Ralph H Orter Cigarette holder and smoker
US3318316A (en) * 1964-11-04 1967-05-09 Banderas Luis Parra Plastic filter for cigarettes

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125100A (en) * 1964-03-17 Filter cartridge for cigarette holders
US3251365A (en) * 1963-03-04 1966-05-17 Ii Charles H Keith Tobacco smoke filter
US3315687A (en) * 1964-03-05 1967-04-25 Menges Curt Filter insert for cigarette holders and the like
US3318315A (en) * 1964-06-18 1967-05-09 Ralph H Orter Cigarette holder and smoker
US3318316A (en) * 1964-11-04 1967-05-09 Banderas Luis Parra Plastic filter for cigarettes

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3669128A (en) * 1970-11-09 1972-06-13 Joseph H Cohen Device for filtering tobacco smoke
FR2414330A1 (en) * 1978-01-12 1979-08-10 Cohen Fernand Crutch of adjustable length
EP0025280A1 (en) * 1979-09-10 1981-03-18 Imperial Chemical Industries Plc Electrostatically actuated valve
US5549124A (en) * 1988-08-29 1996-08-27 Dorsey; David A. Water filter for cigarettes
WO2004010803A1 (en) * 2002-07-26 2004-02-05 Semen Pogosyan A filter for smoking articles and a smoking article with that filter
CN105105331A (en) * 2015-09-22 2015-12-02 浙江凯实激光科技股份有限公司 Built-in type smoke purifying filter

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