U.S. patent number 3,805,808 [Application Number 05/336,067] was granted by the patent office on 1974-04-23 for filter ejector.
This patent grant is currently assigned to Yoshinaga Prince Co., Ltd.. Invention is credited to Sadao Yoshinaga.
United States Patent |
3,805,808 |
Yoshinaga |
April 23, 1974 |
FILTER EJECTOR
Abstract
Apparatus is disclosed for removing tars and other deleterious
material from tobacco smoke including a cylindrical housing
including an entrance chamber for receiving the tobacco product,
such as a cigarette, and terminated at the inner end by a disk
having a selected number of apertures therethrough for the passage
of tobacco smoke. Further, channels are disposed within the disk to
direct the flow of smoke from the end of the tobacco product into
the apertures. An annular smoke guide is disposed on the rearward
side of the aforementioned disk to present an edge onto which the
smoke is directed by the disk apertures, whereby the tars and
various deleterious products may be deposited. Further, the smoke
is further drawn through a porous filter, whereby any remaining
deleterious products may be absorbed. Such filter apparatus may be
mounted within a holder including a mouthpiece having a passage
therethrough in communication with the aforedescribed filter
apparatus. In one illustrative embodiment, the mouthpiece is
connected to a resilient bushing and is resiliently biased against
an end of the filter apparatus to assure that air does not leak
about the outer surface of the tobacco product and filter
apparatus. In addition, the holder includes a cavity for mounting
therein the filter apparatus and for facilitating the rectilinear
movement of the mouthpiece to thereby enable the aforedescribed
filter apparatus to be ejected therefrom. In one illustrative
embodiment, the cigarette receiving opening of the cavity has
therein a resilient holding projection for securing the filter
apparatus within the cartridge, but permitting upon actuation of
the mouthpiece member, the rejection therethrough of the filter
apparatus.
Inventors: |
Yoshinaga; Sadao (Tokyo,
JA) |
Assignee: |
Yoshinaga Prince Co., Ltd.
(Tokyo, JA)
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Family
ID: |
26958202 |
Appl.
No.: |
05/336,067 |
Filed: |
February 26, 1973 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
Issue Date |
|
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276917 |
Aug 1, 1972 |
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Current U.S.
Class: |
131/182;
131/187 |
Current CPC
Class: |
A24F
13/10 (20130101); A24F 13/06 (20130101) |
Current International
Class: |
A24F
13/10 (20060101); A24F 13/00 (20060101); A24F
13/06 (20060101); A24f 013/10 () |
Field of
Search: |
;131/182,187 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Reich; Joseph S.
Attorney, Agent or Firm: Staas, Halsey & Gable
Parent Case Text
This is a Division of application Ser. No. 276,917, filed Aug. 1,
1972.
Claims
What is claimed is:
1. A filter ejector, comprising an inner member adapted at one end
thereof to be held in the mouth of a smoker and having a passage
for the flow of smoke therethrough, an outer tubular member, means
for mounting a portion of said inner member within said outer
tubular member for rectilinear sliding motion, said outer tubular
member including at one end a projection on the inner surface
thereof permitting a filter cartridge to be inserted within said
outer tubular member and held therein by said projection, said
filter cartridge including means permitting a cigarette to be
inserted and held therein, and means normally biasing said inner
member to a first position within said outer tubular member wherein
said filter cartridge may be inserted within said outer tubular
member while permitting the user to eject both the filter cartridge
and cigarette by sliding said inner member to a second position
against the force of said means normally biasing said inner member
to said first position such that said inner member engages said
cartridge and forces same through said projection thereafter
causing said cartridge and cigarette to slide out of said one end
of said outer tubular member.
2. A filter ejector as in claim 1, wherein said means normally
biasing said inner member to a first position comprises a helical
spring positioned between said inner and outer members, said outer
tubular member having an abutment adapted to be engaged by one end
of said spring and said inner member having an abutment adapted to
be engaged by the other end thereof.
3. A filter ejector, comprising an inner member adapted at one end
thereof to be held in the mouth of a smoker and having a passage
for the flow of smoke therethrough, an outer tubular member, means
mounting a portion of said inner member within said outer tubular
member for rectilinear sliding motion, said outer tubular member
including at one end a projection on the inner surface thereof
permitting a filter cartridge to be inserted within said outer
tubular member and held therein by said projection, said filter
cartridge including means permitting a cigarette to be inserted and
held therein, and means normally biasing said inner member towards
said projection, the force of said means biasing said inner member
being insufficient of itself to move said cartridge over said
projection while permitting the user to eject both the filter
cartridge and cigarette by sliding said inner member further within
said outer tubular member in the direction in which the force of
said means normally biasing said inner member acts such that said
inner member engages said cartridge and forces same through said
projection thereafter causing said cartridge and cigarette to slide
out of said one end of said outer tubular member.
4. A filter ejector as in claim 3, wherein said means normally
biasing said inner member to a first position comprises a helical
spring positioned between said inner and outer members, said outer
tubular member having an abutment adapted to be engaged by one end
of said spring and said inner member having an abutment adapted to
be engaged by the other end thereof.
5. A filter ejector as in claim 2, wherein said abutment formed as
a part of said outer tubular member is spaced from said one end of
said outer tubular member a distance approximating the length of
said filter cartridge.
6. A filter ejector as in claim 4, including a second abutment
formed as a part of said outer tubular member and extending
inwardly thereof, said second abutment being spaced from said one
end of said outer tubular member a distance approximating the
length of said filter cartridge.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to filter apparatus and particularly those
filter apparatus adapted to be incorporated into cigar or cigarette
holders.
2. Description of the Prior Art
In the prior art, cigarette and cigar filter devices are known for
withdrawing various deleterious substances, such as tar, from the
tobacco smoke before being inhaled. Typically, atmospheric air
contains more or less humidity, depending upon the humidity of the
ambient environment. As the air is drawn through the burning
tobacco, the relatively high temperature of the tobacco transforms
this moisture into aqueous vapor. Simultaneously, the combustion of
the tobacco produces certain by-products including nicotine, tars,
resins, ash in the form of dust, and other deleterious products.
The nicotine, tars and resins and other volatile constituents of
these products of combustion are volatized in the combustion zone,
and in the normal operation of smoking, without appropriate filter
apparatus, they would be carried by the tobacco smoke and aqueous
vapor directly into the mouth, throat and lungs of the smoker,
where they condense or liquefy in the form of a dark brown, mobile
liquid.
In the past several years, the public has become deeply concerned
over the possible injurious effects of the combustion products from
tobacco. This concern has spurred the development of various
tobacco filtering apparatus to absorb to the degree possible these
deleterious products. The use of filters of absorbent material
heretofore employed, may remove some small part of these products
of combustion by absorption. However, the passage of such products
through these absorbent filters is so rapid and unobstructed that
they are extremely inefficient and a very considerable quantity of
the deleterious products may enter the mouth of the smoker.
Other devices have been devised for the filtering of tobacco smoke
to remove the aforementioned products. Screens and orifice-equipped
disks have been proposed, the effective opening for the flow of
smoke being quite minute; while some of the aforementioned products
may be removed thereby, it would be desirable to improve the
efficiency of such devices by first increasing the proportion of
deleterious products removed and further permitting a satisfying
flow of smoke through the filter device. Many filter devices now
proposed obstruct the flow of air and smoke therethrough to such an
extent that the smoker is forced to inhale with undue effort.
Further, there has been suggested suitable filter holders for
accepting filter devices of the prior art whereby the filter holder
may be re-used by inserting new filters. Typically, it would be
desirable if such filter holders could readily accept a replaceable
filter apparatus, and then after use and the filter has become
clogged with the removed tobacco products, the filter apparatus
could be replaced readily.
SUMMARY OF THE INVENTION
It is therefore an object of this invention to provide a new and
improved filter apparatus capable of efficiently removing
deleterious products from tobacco smoke, while permitting a
relatively easy flow of air through the filtering apparatus.
It is a further object of this invention to provide a new and
improved filter holder device capable of readily receiving and
discharging a filter apparatus therefrom.
In accordance with these and other objects of the invention, there
is provided filter apparatus adapted for efficiently removing the
deleterious products from tobacco smoke, including a housing having
at one end thereof an entrance chamber for receiving the end of a
tobacco product such as a cigarette, a disk terminating the
entrance chamber and having therein a plurality of openings to
permit the passage of smoke therethrough, and an annular guide
member disposed about the axis of the housing for presenting an
edge surface to the aforementioned openings upon which the
deleterious products may be deposited. In an illustrative
embodiment of this invention, a porous filter may be disposed
rearwardly of the annular guide member to form a further filtering
operation upon the tobacco smoke.
As a further aspect of this invention, the disk may have channels
or grooves disposed therein for directing the tobacco smoke into
the disk openings and decreasing the depth or width of the openings
to prevent clogging by the deleterious products. The edge of the
annular guide member may have a beveled portion whereby the
build-up of deposit upon the peripheral edge will not block the
flow of tobacco smoke through the disk openings. Further, the
annular guide member facilitates the flow of tobacco smoke through
the filter housing.
A still further aspect of this invention involves the use of the
aforementioned filter with a filter holder having an outer housing
and an inner mouthpiece disposed for rectilinear motion with
respect to the aforementioned housing. The outer housing has a
cavity therein for receiving the aforedescribed filter apparatus so
that the entrance cavity of the filter apparatus is disposed to
receive a cigarette or the like through an opening within the outer
holder housing. The inner mouthpiece may then be moved toward the
forward end to thereby eject the filter apparatus therefrom once
the filter apparatus has been spent by collection of deleterious
tobacco products.
In one illustrative embodiment of the filter holder of this
invention, spring-biasing means are incorporated to urge the inner
mouthpiece as described above against one end surface of the filter
apparatus to insure an air-tight seal therebetween, to prevent air
from flowing about the filter apparatus and into the central
passage of the mouthpiece. In a further embodiment of this
invention, the inner mouthpiece may have a resilient bushing
disposed about the inner passage to insure an air-tight seal
between the inner mouthpiece and the filter apparatus.
BRIEF DESCRIPTION OF THE DRAWINGS
These and other objects and advantages of the present invention
will become more apparent by referring to the following detailed
description and accompanying drawings, in which:
FIG. 1 is a partial, cross-sectioned view showing the filter
apparatus as incorporated into a holder in accordance with the
teachings of this invention;
FIG. 2 is a partial perspective view, partially broken away,
showing the filter apparatus of FIG. 1;
FIG. 3 is a partial perspective view partially broken away, of an
alternative embodiment of the filter apparatus of this invention in
which four openings are disposed within the inner disk member
thereof;
FIG. 4 is a sectioned view of a cigarette holder for receiving the
filter apparatus as shown in FIGS. 1, 2 and 3, in accordance with
teachings of this invention;
FIG. 5 is a side elevational view partially in section illustrating
the cigarette holder of FIG. 4; and
FIG. 6 is a sectioned view of another embodiment of the filter
holder of this invention whereby a seal is insured between the
inner mouthpiece thereof and the filter apparatus.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
With regard to the drawings and in particular to FIG. 1, there is
shown a tobacco smoke filter in accordance with the teachings of
this invention including an outer, cylindrical housing 10 having an
entrance through which a cigarette 20 may be inserted into an
entrance chamber 7. As indicated in FIG. 1, the housing 10 forms a
circular ridge 7a against which the edge of the cigarette 20 abuts.
The entrance cavity 7 is terminated by a disk 1 extending across
and blocking the flow of tobacco smoke through the housing 10. As
particularly illustrated in FIG. 2, the disc 1 has a groove or
channel 3 disposed thereacross for directing the tobacco smoke into
at least two openings 1a disposed at either end of the channel 3.
Significantly, the provision of the channel 3 reduces the depth or
axial dimension of the openings 1a through the disk 1 to thereby
reduce the possibility of clogging the disk openings 1a with the
deleterious particles. If the depth of the openings 1a is larger,
the openings 1a are liable to be filled with a deposit of tobacco
products and further, the removal of such deposit by oral suction
would become difficult. In an illustrative embodiment of this
invention, the depth or axial dimension of the openings 1a is 0.6mm
with a 0.6mm diameter.
As shown in FIG. 2, two openings 1a are provided. However, it will
be understood as shown in FIG. 3, that a greater number of openings
may be provided. For example, FIG. 3 shows a filter apparatus
having a cylindrical housing 30 in which there is disposed a disk
31 having a pair of grooves or channels 33a and 33b disposed at
right angles with respect to each other within the disk 31, with
two openings 31a disposed in each channel.
With regard to FIGS. 1 and 2, an annular smoke guide 2 is disposed
about the axis of the cylindrically-shaped housing 10 rearwardly of
the disk 1. More specifically, the smoke guide 2 has a circular
edge portion 2a aligned in an axial sense with respect to the
openings 1a, it being noted that the forward edge of the guide 2 is
spaced slightly rearwardly from the rear face of the disc 1. In the
embodiment shown in FIG. 3, a similar smoke guide would be disposed
rearwardly of the disk 31 having an edge portion disposed in
alignment with each of the openings 31a. As particularly shown in
FIG. 1, the smoke guide 2 has a beveled portion 2b, the function of
which will be explained in detail later. As illustratively shown in
both FIGS. 1 and 2, the smoke guide 2 is mounted upon a disk 8
disposed across and blocking the interior of the cylindrical
housing 10. The disk 8 has a plurality of openings 8a therein
disposed in a circular array centrally of the disk 8 and through
which the annular smoke guide 2 directs the tobacco smoke as the
smoker inhales.
A further stage of filtration is provided by a porous filter 4
disposed rearwardly of the disk 8. The filter 4 may be made of a
suitable porous material for absorbing those deleterious products
which have not already been removed by the filtering process
effected by the smoke guide 2. As seen in FIG. 1, a circular end
member 6 closes off the end of the filter apparatus and includes a
flange 6c abutting the end portion of the porous filter 4, for
retaining the porous filter 4 within the housing 10 against the
disk 8. The flange 6c forms an open cavity 5 on the rearward side
of the porous filter 4 to thereby increase the effective area of
the filter by increasing the area through which the smoke may flow
from the end surface of the filter 4. As shown in FIG. 1, an
opening 6a within the end member 6 is provided in communication
with the cavity 5 to permit the exit of the tobacco smoke.
In operation, the tobacco smoke is withdrawn as shown by the arrows
in FIG. 1 from the cigarette 20 and is directed by the channel 3
into the openings 1a of the disk 1. The constricted openings 1a
force the tobacco smoke into jets which are directed onto the
circular edge portion 2a, whereat tars, nicotine and other
deleterious products are deposited. Further, the plural openings 1a
encourage a high-speed venturi effect which spins the tobacco smoke
to centrifugally throw the heavy tar, nicotine and moisture onto an
inner wall surface 10b. As indicated by the arrows in FIG. 1, the
tobacco smoke is not drawn into the space between the smoke guide 2
and the inner wall surface 10b, but tends to return into the
central passageway within the annular smoke guide 2 to be drawn
through the openings 8a of the disk 8. As illustrated in the
embodiments of FIGS. 1, 2 and 3, more than one opening 1a is
provided. If only one opening is provided, the deposit from the
tobacco smoke will be on only a small portion of the edge 2a and
the available area for deposit will not be used effectively.
Significantly, the circular edge 2a has a beveled edge portion 2b
on the inside thereof to facilitate the collection of deposit
thereon whereby the deposit does not back up and block the openings
1a. It is particularly noted that the removal of deleterious
products is by a multiple process including not only the
bombardment of the surface portion 2a, but also the spinning of the
air by the mechanism of the disk 1 and the openings 1a therein,
whereby products are thrown against the surface 10b.
With regard to FIGS. 4 and 5, there is shown a filter holder in
accordance with teachings of this invention for receiving any of
the filter apparatus as shown in FIGS. 1, 2 and 3. More
specifically, there is shown an outer housing 46 of a generally
cylindrical, tapered configuration for receiving therein an inner
mouthpiece 43 having a central passage 43a disposed therethrough.
As indicated in FIG. 4, the mouthpiece 43 is coupled by suitable
threads to an inner guide tube 42, likewise having an inner passage
42a therethrough in alignment with the passage 43a of the
mouthpiece 43. The outer housing 46 is in turn connected, as by
screw threads, to a cylindrically-shaped member 47 forming a
chamber 48 for receiving the filter apparatus as described above.
Significantly, a spring-biasing member 41 is incorporated within
this filter holder for biasing the guide tube 42 to the right, as
shown in FIGS. 4 and 5. More specifically, the guide tube 42
includes a circular projection 42a against which one end of the
spring 41 abuts. Further, an annular member 45 is disposed within a
circular groove 47a of the cylindrical member 47 to retain the
other end of the spring 41. The cylindrical member 47 includes a
projection or notch 47b for retaining the filtering apparatus
within the cavity 48 with its discharge opening 6a in communication
with the inner passage 42a of the guide tube 42. The filter
apparatus may be easily inserted within the member 47 by pressing
the filter apparatus which may be made typically of a suitable
flexible plastic, through the entrance opening of the member 47
past the circular notch 47b, whereby the notch 47b abuts and
retains the leading edge of the filtering apparatus. In order to
discharge the filter apparatus, the mouthpiece 43 is grasped and is
directed to the left, as shown in FIGS. 4 and 5, to thereby cause
the guide tube 42 to abut the disk 6 and to force the filter
apparatus through the front opening of the member 47.
In the embodiment of the filter holder shown in FIGS. 4 and 5, the
filter apparatus is not resiliently secured within the holder, but
is disposed within the opening formed by the member 47 which is
dimensioned axially to receive a filter apparatus of like
dimension. Therefore, a gap between the filter and the holder may
sometimes occur because of dimensional errors of the filter and/or
the holder. In a further embodiment of this invention as shown in
FIG. 6, a suitable biasing means such as a coil spring 11 is
inserted within the filter holder to direct a guide tube 12 toward
the end surface of the filter apparatus whose housing is indicated
by the numeral 10. More specifically, the guide tube 12 includes a
surface 12b against which one end of the spring 11 abuts and the
outer housing 16 of the holder includes a second surface 16a
against which the other end of the spring 11 abuts so that the
spring 11 provides a biasing force against the guide tube 12 in a
direction to the left, as shown in FIG. 6. The guide tube 12
includes an annularly-shaped, resilient bushing 14 disposed at one
end thereof for abutting against the end surface of the filter. The
biasing action of the spring 11 and the resiliency of the bushing
14 insure an airtight seal between the guide tube 12 and the filter
apparatus whereby air cannot seep around the filter apparatus and
into a central passage 12c of the guide tube 12.
The leading or other end of the filter apparatus is retained within
a cylindrical member 17 which is attached to the outer housing 16,
by a circular projection 17a which abuts against a series of
detents 10a diposed upon the periphery of the filter apparatus
housing 10. In the embodiment shown in FIG. 6, the biasing force of
the spring 11 is smaller than the stopping force of the projection
17a, as exerted upon the detents 10a.
In order to remove the filter apparatus, a mouthpiece 13, which is
connected with the guide tube 12, is directed strongly to the front
direction or left, as shown in FIG. 6, to disconnect the detents
10a from the rim 17a, whereby the filter apparatus is discharged
from the cylindrical member 17. In this step, the rectilinear
movement of the guide tube 12 with respect to the outer housing 16
is limited by an annularly shaped stopper member 15 disposed within
a groove of the cylindrical member 17, which abuts against a
surface 12a of the guide tube 12. The biasing action of the spring
11 compensates for dimensional error either in the filter holder or
the filter apparatus. In an illustrative embodiment of this
invention, the stroke of the rectilinear motion of the guide tube
12 is in the order of 5mm, which is sufficient for the compensation
of normal dimensional errors in the length of the cartridge or
filter holder. Further, the cylindrical member 17 may be made of a
wear-resistant material such as a suitable metal, e.g., aluminum,
to insure that the repeated rejection of the filter apparatus does
not have a harmful effect upon the life of the filter holder.
Thus, there has been shown a new and improved filter apparatus
capable of efficient removal of deleterious particles from tobacco
smoke by a plurality of filtering actions in which: (1) a swirling
action may be imparted to the filter smoke, whereby deleterious
particles are centrifugally thrown therefrom, (2) a plurality of
jets of the smoke particles are directed onto an impact surface and
(3) a porous filter is used to remove any remaining particles that
may be left. Further, there is shown a new filter holder for such
filter apparatus whereby the insertion and removal of the filter
apparatus is easily achieved.
Numerous changes may be made in the above-described apparatus and
the different embodiments of the invention may be made without
departing from the spirit thereof; therefore, it is intended that
all matter contained in the foregoing description and in the
accompanying drawings shall be interpreted as illustrative and not
in a limiting sense.
* * * * *