PASTE DISPENSER TOOTH-BRUSH

BROSSE A DENTS A RESERVE DE PATE DENTIFRICE

English Abstract

ABSTRACT Of THE DISCLOSURE

A pasta dispenser tooth-brush that is convenient and simple
to operats and is adapted to be conveniently carried on a person. This
paste dispenser tooth-brush comprises an intermediate tubular body,
a tooth-brush head secured at one end of the intermediate body, a tooth-
paste supply cartridge at the other and of the intermediate body, a cover
fitting over the tooth-brush with a tooth-paste axial passage in the
intermediate body, the latter forming a piston at one end screwing in the
tooth-paste supply cartridge to expel the tooth-paste toward the tooth-
brush through the axial passage, and an apertured cap at the open and
of the cartridge and screwed and unscrewed by the piston to either expel
the tooth-paste or to open the cartridge for refill.

Claims

1. A paste dispenser tooth-brush comprising, in combination,
an intermediate body with a tooth-paste passage therein, a tooth-brush
head secured to one end of the intermediate body and including a tooth-
brush with an intermediate passage and with paste outlet means in operative
communication with the tooth-paste passage of the intermediate body, the
other end of said intermediate body forming an integral piston having
external screw threads, the tooth-paste passage of said intermediate body
opening at the external end face of said piston, at least two spaced
projections protruding from said end face of said piston, a tooth-paste
supply cartridge having an open end and a closed opposite end, and having
an internal surface forming internal screw threads extending substantially
through the entire length of said cartridge, a rigid cap having external
screw threads, a tooth-paste passage extending therethrough and spaced
cavities at one and face, the external screw threads of said piston and
cap engageable with the internal screw threads of said cartridge, said
spaced cavities adapted to receive the projections of said piston with the
tooth-paste passage of said cap in communication with the tooth-paste
passage of said intermediate body, aaid cap closing the open and of said
cartridge when the latter is filled with tooth-paste, a pull-off
sticker closing the tooth-paste passage of eaid cap, removal of the latter
enabling eaid piston to be inserted into the open end of said cartridge
in threaded engagement with the internal threads thereof and with the
projections of said pistons engaging the cavities of said cap with the
tooth-paste passage of said intermediate body in register with the tooth-
paste passage of said cap and in communication wlth the supply of tooth-
paste in said cartridge, relative rotation of said cartridge and of the
assembly of said piston and of said cap in one direction causing expelling
of the tooth-paste within said cartridge through said tooth-pasts passagses
and once the tooth-paste supply in said cartridge is spent, said cartridge
can be detached from said piston by relative rotation of said cartridge
with respect to the assembly of said piston and cap in the opposite
direction.





2. A paste dispenser tooth-brush, comprising, in combination:
A. A tooth-brush head, including:
a) an elongated body, with a plurality of bristle tufts
extending perpendicularly thereto;
b) a tooth-paste passage, in the core of said body;
c) paste outlet means;
d) a cover, over said body, having internal screw threads;
. an intermediate body, comprising:
a) a tooth-paste passage, longitudinally of said intermediate
body in its core, said intermediate body passage being in
operative communication with the tooth-paste passage of
said head, said intermediate body being secured at a first
end to said head and to said cover by external screw threads,
and having a second end forming an integral piston having
external screw threads;.
b) a valve chamber, near said first end of the intermediate
body, where a valve member is slidable axially to selectively
intercept the flow of paste along said intermediate body
passage, said valve member being biased by a spring
toward its closing position, said spring being positioned
at one and of said valve member, and the other and of the
latter including A projection to be pushed down to open
said valve member;
c) an opening of said intermediate body passage, at the external
end face of said piston;
d) two spaced projections, at the least, protruding from said
end face of said piston;
C. a tooth-paste supply having an open and, secured to said second end
of said intermediate body, and a closed opposite end, and having
an internal surface forming internal screw threads extending
substantially through the entire length of said cartridge;


D. a rigid cap, closing the open end of said cartridge when the latter
is filled with tooth-paste, said cap having external screw threads;
a tooth-paste passage, extending through said rigid cap; spaced
cavities made in said rigid cap, the external screw threads of
said piston and cap engageable with the internal screw threads of
said cartridge, said spaced cavities adapted to receive the
projections of said piston with the tooth-paste passage of said
cap in communication with the tooth-paste passage of said
intermediate body;
E. a pull-off sticker, closing the tooth-paste passage of said cap,
removal of the latter enabling said piston to be inserted into
the open end of said cartridge in threaded engagement with the
internal threads thereof and with the projections of said piston
engaging the cavities of said cap with the tooth-paste passage of
said intermediate body in register with the tooth-paste passage
of said cap and in communication with the supply of tooth-paste in
said cartridge;
whereby relative rotation of said cartridge and of the assembly
of said piston and of said cap in one direction cause the
expelling of the tooth paste within said cartridge through said
tooth-paste passages; once the tooth-paste supply in said cartridge
is spent, said cartridge can be detached from said piston by
relative rotation of said cartridge with respect to the assembly
of said piston and cap in the opposite direction.

Description

` ~s~z~
This invantion rel~tes to a tooth-bruRh uf ths type adapted
to disp~n~ the tooth-paste to the pristles of the tooth brueh haadO
The term tooth-brush head is uaed hers to define the bristlss
and the body Dn which the bri~tla~ are 3scured.
It is a genersl object o~ the present in~ention to provide a
paste dispen~er tooth-bru~h of convenient ~nd simple construction ~nd
operation.
It 18 Another ob3ect of the present invention to provide a paate
di~p~nser tooth-bru~h that 1~ sdapted tD be conveniently carri~d by a
person eithar clipped to one'~ pocket or ~u~p~nded to one'a n~ck by
chain or strlng.
It i8 e further ob~ect of the pre~ent invsntiqn to provids
a paste dispenssr tooth-brush wherein tha tooth-brush i~ diapensed from
a container or c~rtridge that may be r~fllled from a convsntional tooth-
paR~s tube or ~ay be readily replacad by a refill cartr$dge.
The invention will now be described in detail with refer~nce
to a epecific embodiment thareo~ which ie illustrated9 by w~y of example,
in the accompanying drawings, in which:
Figure.l i8 a perspectiue view of a paste dlsp0nser tooth-

brush according to the present invention ~nd ~hown in clo~ed pnsition~
Figure.2 i8 ~n exploded per~pective view of th~ sa~e paste di~-
~pen~er tooth-brush;
Flgure 3 18 a longit,udinal croa~-~ection through the same p~ste
dispenser tooth-b~u3h;
Figure 4 i~ a perspective view of one end of a tooth-pa~te supply
oartridg~ forming part of the sa~e paste di~p~n~er tooth bru~hs
FiQUra 5 i8 ~ longitudin~l cro~s-section through the sa~a tooth-
brueh but at 909 comp~red to ths cro~o-seotion of Figure 3;
; Figure 6 ie ~n enlsrged detsll view of a portion of Figur~ 3,
particul~rly illustrat~ng ~ pa~te control vslve; ~nd
~i' Figure 7 i9 ~ tr~n~va~e cro~s~sct1Dnal view ae ~aen along

line ~ n Figur~ 3.
Ths illustr~ted p~ste di~penser teath bru~h co~pri~es an



~ 2 --

821

int0rmediate body l,of generally cylindricsl shape, definlng an internal
longitudinal or axial pas~age 2 axtending ~rom snd to and theraof for
th~ passage of t~oth-paAte. Th~ intermadi~te body 1 i~ provid~d with
external screw threads 3 and 4 on it8 oppositH ~nds reRpactivaly, The
interm~diate body 1 i8 also provided with ~ rsdial bore ext~nding
th~ethrough and ~ormlng ~ valv~ chambar 5 intercepting the axial
tooth-pa3te pssssge 2. A value membsr 6 i8 slid~bls axially in the
valve ohambar to selectivsly ~nteroept the flow of tooth~past0 along the
tooth-past~ pasgage 2. A spring 7 biasos the tooth-paste control ualue
6 toward its c109~ ng po~ition and i8 held oaptive by a cap or plug ~.
The valvæ member 6 includes a projection 9 to ba pu~hed down to open
the tooth-pa~te control val~e. The end 9~ the intermadiate body 1
which is provided with the external ecraw threads 4 is ~ormed with sn
axial racess lO.
A tooth-brush head 11 i9 attachad to tha intermsdiate body 1 ~nd
comprisss an elongated body 12 end tooth-brush bri~tle~ 13. Tha elon~
gated body 12 ha~ a shank portion 14 Recured endwise ~nto the sxial
cavity lO in the ~nd ot the inter~ediste body 1. The tooth-b~ush body
12 i~ provided wlth tooth~p~ste eutlet ports 15 in communic~tion through
th0 shank 14 with the tooth-pa~te passage 2 ln th0 intsrmedi~te body 1.
A cov0r, or cap 16, i~ ecr0wad over the tooth-bru~h head 11 by
angagement with the external ~crsw threads 4. The couer 16 i9 provided
with a pocket attachment clip 17 and an apertured lug or eys 1~ Por
carrying of the tooth-brush in one 18 pocket or su~pended by a chain or
string.
At tha other end of the int0rmediatè body 1, thare iB prcvided
9 tooth-paqta supply holder in ths ~orm o~ a Gap or cartridge 19.
Th0 cartridgs 19 h~e ~ clos~d end 20 and an axislly opposite open and
with internal screw threads 21 extending throughout the lsngth therao~.
A cap, or plug 22,i~ provided with 0xte~nal scr~w thraads to be screwed into
` tha cartr~dge ~9 and c}ose the 0ame. The cap, or plug 227 i~ providad

with an axial paste outlat hols9 or p~ssaga 23, through which the tooth-
pssta will ba expellsd. A pair o~ r~c~s~e0, or cavitia~ ~4, ars providfld

-- S --

l~S~1~32~

in th0 cap or plug 22. The correeponding end of thH intermediat0 body 1
is prouided with a pair of prajections, or pins 25, registering with th0
cavities 24 to engag~ in the latt~r for bodily rotation of the cap or plug
22 with the intermediate body 1 relative to the cartridge lg~
It will be noted that the cartridge 19 forms a cylindrical tooth-
paste chamber with its internal screw threads cooperating with the external
screw thraads 3 to form a ~cr~w-threaded connection betwesn the cartridge or
cap 19 and the intermediate body 1. This screw-threaded connection i~ used
to secure the cartridge 19 on tha 0nd of the intermediate body and it i9
0 al50 advantageously used to expel the tooth-paste out of the cartridgs
through the communicating passage defined by the elements 23, 2, 15. This
i9 dons by screwing in the ~crew thresd~ 3 and thH plug 22 b~dily tharawith
to force the tooth-paste out through the central outl~t 23 in the plug.
Thus, the corre~ponding end of the intermediats body acts as a piston in
coop~ratlon with ths plug 22.
The cartridge, or cap 19, may be rafilled by the usar by unscrewing
thn plug 22 and using, say, a conventional tooth-paste tube. The cartridge
19 may also be di~cardad when ampty to be replsced by a full cartridge sold for
that purpose, such as with a pull-off stickar 26, to close the outlet 23
pending its use.


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