Note: Descriptions are shown in the official language in which they were submitted.
CONTAINER FOR THE SPRAY-DISPENS~NG OF LIQUID
The pr~sent invention rel~te6 to contain~r~ ~or ~he ~pr~y
dispen3ing of liquid, h~vln~ a ~pray noz~le arranqed cn th@ top
of the container and a handle for a pump which i~ oaiated
with the ~ontainer and ha~ a pump cylinder, pi$~on rod and pump
pi~ton for producing a cu~hion ~f compras~ed air above the
~urface o~ ~he liquid.
Dispensers Or this ~ype are ext~n~iv~ly replaoing ~pray
devices which operate with propul~ion ag~nts whioh are
~nvironmen~ally objectionable. one device o~ this type is
known, ~or instance, ~ro~ US Pater,t 3,955,720, Fig. 12. The
pump handle of the can be locked on the container in tho basi~
po~ition. The top or hsad surfaae of the contalner ls pro~ided
~or thi~ purpos~ with a cons~riot~oh having a detent ~roove
d~velo~ed on its inner side. The plate~haped edg~ o~ ~he
handle engage~ into ~aid groove. In this way, any re~ldual
pressur~ remaining in the pump is prevented ~ro~ li~ting the
pUh~p }landle out of the basi~ po~ition and lnto an unde~ina~le
pro~ruding posltion. sincR the ha~dle can pass into this
locked position ~pon no~al a~tuation of the pump already a~
the full stroke, this measure, however, pro~e~ troublesom~ .
6ince th~ handle must then b2 p~lled out aga1n with di~iculty
at a tubu-lar connec~orpiec2 whi.ch ext~nds outward ~eyond ~he
plate. ~ll thi~ impairs the operation of su~h propellant-~ree
containers or ~ispen~ers~ Further~ore, ~he ~ction of heat c~n
lead to suGh Gonditions of exp~nsion that the in~ernal pre~ure
, ~
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overcome~ said detent. means, re~ulting in cr~eping out and aven
in a protr~ion which 1ift~ ofP the protective cover.
AoGi~ehtal contact with article~ contained in a b~g can re~ul~
un~avorably i~ ~h~ unde~ired rQle~s~ of th~ 3pray devic~. ~he
passage o~ ~ir i~to the in~ide of the container ~akes plaoe
fur~hermore a~ the b~ttom o~ the pump ~hich extend~ ~rom ~h~
top into the container. Dependi~g on ~he level o~ ~illing, the
air i~ ~orced through the liquid. This, a~ a rule, cau~e~ a
gur~ling noi~e~ There is furthermore the di~advantage that,
with the passage o$ time, liquid ~eaks outwa~d over the air-
feed path. This not only consti~u~es a loss but also decreases
the acaeptance of ~uch dispensers.
The object of the present in~ention i~ to develop ~
~i~p~n~r o~ ~his type in ~ manner wllich is more favorable from
~he standpoir~t o~ use and handl ing whlle avoiding the
a~ovemer~tioned disa~vantage of l:he springing bac~}; of the
piston .
This ob~ ~c~ is achieved by the inventioh ~et forth in
Claim 1.
~ h~ dependent clai~s contain advantageous further
develop~e~s of tha dls2ense~ o~ the invention.
As a result of this development a oontainer of this type
fo~ the spray dispensin~ o~ uid is obtained which ls of
increased value in us~. This result i~s ob~ained in the manner
that the pump cyli~der ~orms at its lowe; and a pressu~e~
rele,ase opaning which can b~ mGved over ~y ~he sealing sur~ace
of a cu~f whi~h forms the pump pis~on, ~ai~ opening, when ~he
pump pis~on i~ in it~ depre~ed po6ition, being in Plow
communic~ion wi~h ~ tubula~ cros8 ~ection of the pi~ton rod
whic~ i~ op~n ~oward~ the ou~side. The rele~e ~f pressure i~
ct~d b~hind th~ re~r ~f ~he piston body via the tubular
~ro~5 6ec~ion o~ ~he pis~on rod. The corresponding relQase of
tha pres~ure t~kes place suddenly. No sp*cial detent mea~s
whtch inc~ease the co~t of the syste~ ~re require~ ~he
actuating handle nevertheless ret~in~ it~ ba~ic po~ition ~imply
by th~ utilization of frictional force. Another advantageous
fea~ur~ o~ the in~rention is that the ~Uf~ iS olipp~l on~o a
central mandrel o~ the pis~on rod and a mushroom-~haped
projection of the ~andrel exten~s into the cup hollow o~ the
cuf~ an-~ has incisi~ns which e~tend to the wall of the mandrel
and ~re in flow communlcation ~lth a paE,sage. This assures the
des~red dependable valve fun~tion ~y extre~ely simple
~tru~tural means. I~ is fur~h~rlr~or~ proposed t.hat ~n encasing
tu~e be pla~ed ove~ the pum~ cylinder, E;aid ~ube he~ng in
clipped po~iti.on with respect to the pump cylinder and forming
the bottom of the pump cylinder. In this way, a ~eparate
bottom-forming struc~ural par~ is unnecessary. Another featur~
is ~hat the cap bo~om h~s ~n opening for ~he pa~sage of the
~ ntaXe ai~ through the tubu~ar piston ro~. ~he ~ccon~ri~
po~tion oî the grip-forming portio~ o the cap also restrain~
the user fro~ holdin~ the ~ub~lar piston rod closed. The
desire~ ~ed cf air is tharefore al~ays established upo~ pump
m~v~men~. Furthermore, the de~elopment ls characterized by an
association of the cuff arran~e.d on ~h~ end of the pi~on rod
:
wi~h a central passage so ~hat i~ forms a ~ealing ~ur~ace of an
air-inle~ valve a~ a result D~ relat~v~ di~placemen~ with
respect to the piston rod, the corresponding valv~-sea~ ~ur~a~
~eing ~ormed by an annular rib of th~ piston rod th~ annul~r-
rib diameter o~ which is larger than th~ ~entra~ passage. In
this way, the plston body forms at the sam~ ~ime a valve body.
It is furthermore proposed that the relative di~placement
con~is~ o~ an axial displacement and that ~he bottom of the cup
of th~ cup-shaped cuff close a~ leas~ one inle~-valve passage
hole ~n the reqion of the bottom o~ the pi~ton rod. The
pressure produced in the pu~,ping direction in ~ron~ o~ ~-he
pi6ton pushes the cu~ back and the ~ear of the lat~er applie~
itself ayain~t the other sealing ~urface. For an e~ually
ent1 tled dl~tributlon of the alr ~rawn in upon the return
s~ro}c~ it is ~dvan~ageo~ls to provide several pa~age holes
di~tributed ~t eq~ ngles ap~rt. One ~va~tageou~
developm~nt is furthermore obtained by an enc~sing tube which
surrounds th~ piston cylinder so a~ ~o itorm an alr-guid~n~e
~h~nrlel i~rom the l~wer ~nd ~ the pump ~Ip into the reglon of
the uppe.r part of the container, i~ termina~ing the~e as a~r-
bu~let opening. In this way, the co~pressed ~ir which ~ollects
above the ~urface of the l~quid is no longer forced gurgling
through the liquid but is drawn very silently into the
accu~ulator. Tha air assumes practically a U-shaped defleoted
path: en~ranc~ via ~he ~ubular piston rod, de~lec~ion at the
lower end o~ the cylinder, and entrance into the return-air
passage channel. In order to prevent the liquid f~o~ ~lowing
bao~c into the region o~ the aylinder, the air-outlet opening of
the air-pa~;~age ~hannel i~ cloGed by an outlet valve whlch i~
arranged direct:ly ~elow the cave~ of the container. Here,
also, the three-dimensional shape of ~he enca~ing ~u~e is
excell~ntly ~ltili zRd ~nd the outlet ~alVe ~ ~ ~o ~haped that it
can be placed a~; cover body over the ~naa~ing t:ubo. one u~Qful
further ~e~ture is th~ the cover body has a f~s~ening coll~r
which is clamped bet~een a screw connec:tion forming ~he pump
~ingle-hole and a pump-holdlng cap s~rewed thereon. The
fastening collar serves in thls connection at the ~ame time as
packing ring h~tween ~;aid par~s. The ba~ic ~la~tici~y or
flexibility of the matorial pe~mitC the ~urther devQlopment
~h~t the cover ~ody terminates in a valve llp comparable to a
bicy~le valve. The valve lip extends ov~r ~he air-outlet
openin~ It is furthermore found favorable for th~ pump handle
to grip c:ver ~he pu~.p-holding ~ap. SUah a 801ution is
pa~ticularly sa~r~ng in ~pace and also has a stabllizing effect
w~t:h re~pe~t to the a~:tual gripping zone and the handle.
Fur~h~rm~r~, it 1~ advant~eous f ~r ~he pump handle and/or
spray noz zle each to have individual holes ~o be used a~
~illir,~ openings whi~.h lie approximately in th~ cen~ers o~ ~che
narrow-sid~ roundings of th~a ~ontainer, which is o~ elongated
~.ross section. The i~len~lcally developed individu~l holes
permit an option~l, i.e. ~ttachment (~i~). Therefore, ~or
example, the pump having the handle can be attached, it alway~
fitting regardless of what individual hole is in ~ront of the
n\oun~lng h~ad. The ~ame applie~ to th~ spray noz21e. The
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lniti~l equipment areat~s ln e~ch case a dlfferen~iating mean~
for the exaot alignment of the other individual hole~ on the
f~lling head. The functional part which is ~till l~cking i~
then attaahed~ Both indi~idual hol~o can e~en be usQd
simultan~ou~ly as fi~ling operllng~. Ther~ore, minl~um cycle
tim~s ca~ be ob~lned in ~he fillin~ line. Due to the fac~
that the indivi~ual hol~s li~ approximat~ly in ~he center~ ~
narrow-side round~.gs of ~he container, ~hich ~s of ~longated
~hape and cro6s seotlon, the tra~sport path c~n even be
~hort~ned, ainc~ ~he individu~l holes which are u~ed a~ filling
open~ng~ can ~e dir~c~ed ~ran~vers~ to the direation of
tran~por~. 0~ the other hand, i~ th~ ~lignmen~ whlch is more
favol-able for th~ provision with the ~unc~ional part~ ~ to
apply, it i6 advi6~bl~ to move the con~ainer in ~hQ directlon
o~ its longe~t ~id~ in ord~r to give th~ ~ripping tools, etc.,
t~e ~ecessa~y spa~e. Ac~ordingly, th~re are properti~s whic~
yo ar beyond the fun~amental advantagel3 of a con~ainer
developed ~s a double ~ottle. With raspect ~o khe advanta~e~ :
in us~, the ~aid cross-sectional shap~ i9 more ~d~orAble than a
cylind~ical shape, ~i~Ce th~ correspondi~g cro6~ ~a~ion
fuhotion6 as adv~ntageous safety against turning ~pon the
inlti~l filling as well a~ upon the ~u~sequen~ fllling. Such
high hol~i~g forc~s as, for inatanc~, in the. case of a
cylindric~l cont~in~r or con~iner of rot~tional ~ymmetry need
not be applie~ also ~ests bet~r in one'~ hand. ~he
position o~ th~ individual holea in the vicini~y of the narrow-
~ide roundings i therefor~ ah ex~remely logical pla~e: on the
.
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on~ han~, th~ ~u~thes~ po~sibl~ distance apart o:E the
~unctional part~ from each ot:her and, on th~ oth~r hand, a
conc~en~ra~d, easily viewed ~Lr~angemen~ of thes~3 functional
parts upon U8e. Since th~ individual holes are de~eloped on
~he ccntainer lt~elf, the container can ~e establi~hed a~ a
blow container. Thi~ i6 ~truc~urally ~imple and favor~bl~ from
a pri~e ~tandpoint. Further~ore, it is proposed that ~he pump
handle and spray nozzl~a each be provided with a head part which
interchangeably fits both individu~l h41e~. Such a head p~rt
czn advan~ageously be developed as an in~egral element of the
corrosponding ~unctional part a~td therefore, ~or instanc~, in
the ~orm of ~ screw ring, a screw cap or the 1 ike . The
contairter-side at~achmertt i8 then solved accordingly in ~lally
advan~ageo~s manner in the manner tha~ upward-facing screw
connec~lon ex~nd ~rom the cover~ The aorr~sponding
pclydirectionali~y of portion~ of the we~ll lead~, ~e~pite ~he
thinnest possible w~ll thia~ness, to an attachment base which
i~ in it~lf very ~able. The str~6es comi~g ~rom the
movement of the pump are al~o taken up )~etter. P'urthermore,
the pump handle is developed as a ~ap which is turn~ble
together wi~h the pump piston rod ~nd which hGts a downwardly
open cavity to grip ove~ the spray nozzle. In thi5 way, th~
pump ~andle is imp~trted a double func~ion sincs it, at the ~a~e
time, f~rm~ a widet~ed pro~ec1:ive cap. Here, the substantially
equally high neigh~oring po~ition and the ec~::entr~ c associatLon
of the pump piston rod, which n~w, at the same time, forms an
axi~ for turning, Qtre even m-asures of independent importance
~ince they form an anti~turn lock in th~t ~nd po~ition of
shor~ened lenqth. The for~-~it~ing langagQment avoids arly
turning in this position. Only ~ er intQntional lifting of
the c~p can thel latter be brough~ into protruding grip
position, which facllitates the pump actua~ion, similar ~or
injtance to a hook grip of a walking cane. It is ~urthermore
propo~ed ~hat the ~ase sur~a~e of the cap be geometrically
s{mllar to the head ~12r~ace of the ~ontainer. Such a cap re~ts
readily in one's hand, corresponding to ~he selected cros~-
~ec~i~nal shape of the container.
The o~j ect of the invention iEi explained in ~urther detail
below w.ith ~eference ~o two em~odiment~ shown in ~he drawing,
in which:
~ig. 1 ~hows the contain~r developed a~ dispenser in a
perspective view of the f irst embodim~nt,
protectivq cap at t~e s~me ~ime form.lng the pump
hnndle and being swurlg 1~0 out of ~he oorresponding
pro~ectivQ position 1
Fiq. ~ is a ve~ical section through this dispan~er in the
b~sic position;
Fig. 3 shows the dispenser according to the second
embodimQnt~ ~Ben in side view;
Fig. ~ is a top view thereof~
~ig. 5 ~hows this dispenser in eL vertioal section of the
attached separata protective ~ap;
Fig 6 is a se~tion along the line vI-VI of Fig ~, and
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Fig. 7 i5 a ~tion in acao~dance wi~h Fi~. 5 but on a
larger ~calR and in pump-ac~ua~ing po~i~ion.
~ he aontainer 1 which is to be ~;ed as dispense~- Sp is
inte~ded for the dispensing ~y ~prayin~ of 'i~uid 2~ ~or thi~
purpose, it has a function~ unit re~erred to A5 ~he ~pray
nczzl~ ~ and a funct~ onal unit re~erred ~o as the pump P. The
two of the~ ar~ located, accessiblQ for actuation, a~o~e a head
sur~ace 3 o~ tha container 1, over which there exten~ ~ head
part 4 of the noz~1~ D and a head pa~t 5 of the pump P.
The con~ainer i i9 developed a~ ~ ~lo~ ~ont~i~er. ~ pump
cylinde~ 6, ~t~rting fro~ th~ head part S, extend~ into ~he
ln~ e oX the contair-er 1 ain~os~ to its ~ottom 1 ' . ~he bottom
spli~ 90 ~s t3 produce the i~pression of a sort of double
~o~tle.
r~3er tube 7, on the o~h~r hand, ex~ends from the head
piec~ 4 o~' t~lQ nozzle D parallel to the p~p P,
Pump ~yl lnder 6 and riser tube 7 extend over ~he
predomi~ant part o~ th~iir l6ng~h into t~le llquid ~, ~h~ sur~ace
of which lyin~ in ~he uppar third of th~! container 1 is
da~ignated 8.
For ~ne pa~sage ~f ~he corre~ponding func~ion~l unit~ (P,
D), ~her~ are two eiqually large, i~entically shaped ~ndividual
holes 10 on the head ~urface 3, or, more preci3~1y, in the
~n~a~ner cover ~ These holes are extended upward t~ form
correspondin~ly iden~ically ~haped thxeaded connections 11,
throllyh the external thr~ads of which ~he head pie~ies 4, 5 are
~crewed.
' -` , ` `'~ ` ~
.
~ he heigh~ of the thr~ad~d conn~ations 11 corrQ~pond~
approximately to half the in~id~ diameter o~ ~he individual
hole6 lo.
As can b~ noted from the drawings, parti~ularly Fi~
and 4, the individual holes 10 lie approximately in the cent~r
x and x of narrow-side convex rounding~ 12 o~ the container 1
which is of elongated cr~ 6ection. Ref erence i5 had, in
particular, to Fig. 4. From it, i~ can also b~ no~ed tha~
there i~ con~erned an ellipti~al C~OS5 ~ection the wide-side
convex raundin~s o~ which are de~igna~d 13~ Of course, an
oval could also ~e concerned. EvPn a slightly concave
depres~ion of the wide-side roundings 13 woul~ still fall
within the chara~ter o~ the ~lat body o~ the container 1.
The iden~ically shaped region of the individuai holes 10
permit~ optional attachment of the pump P or ~pray nozzle D so
that, upon the initial o~cupying o~ th~ one i~dlvidual hole ~0,
the o~her ind~idual ho~e then acts as :Filling openin~ and,
vice versa, in wh~oh connection clear orien~ation featu~es are
already e~tab~ished ~y the correqpon~ing initial attachm~n~, a~
~ r~u~t o~ which ths fillin~ openlng can be po~itionad
preol~ely in the filling line. Furthermore, both individual
holes 10 ~an ao~ simultar,eously ~ filling openiR~s depending
on ~he exis~ing si~uation, with corresponding subse~uent
at~achmen~ of the fu~ction units.
~ he pos~ibility of exchange~bility Whi~h has been
explained can be noted clearly fxo.~ a compari~on o~ Figs. 1 and
~ and 1 and 5. In Fig. 1, ~h~ ~pray n~zæle D iB located o~ ~he
l~f~ whil~ in the other figur~ i~ is on ~he ri~ht .
Tha vi~ible part of ~h~ Punction~l uni~ "pump P" is its
pump handle 14. Tha pump handle 14 is shaped differerltly in
the two etnbodiment~ shown. In the 6econd em~odiment (for
example, Fig. 5), th& pump h~ndlQ 14 pas~ in~o a c:ap 15 which
grips as a pro~ective cap over ~he nead piece 5 o:~ ~hR pump P.
The head piece ~ is in ~his case in the ~orm of a pump-holding
cap, i . e. screw cap, which is scr~wed onto the thr~aded
connection 11 present there.
A s can be clearly no~ed from Fig. 7, the cap 15 extP-nd6
~rom the upper encl of a ~ubular piston rod 1~. ~t i~ an
in~grAl component of this piston rod 16 of circular cros~:
~ect:i on. It ~orm~ a downwardly open cavity 1~ which i&
a~ncentr~ c tG the tube cros~ sectlon 17 o~ the piston rod 16.
The downward facing edge of the circ:ular c:ap 15 terminate~
direa~ly ln ~rcnt o~ the head sur~ace ~ of ~he container 1 when
ths piston ro~ 16 is in ite basia position.
In the ob~ect in accordance with th~ first ~mbodiment, a
~urtner $unction xesults with res~ect to the cap 15, in
combinatlon with a top cap 19 which protect~vely extends over
both f~c~i~nal units, i.e. p~mp handle 14 and spray noz21e D,
in the pushed-to~st~e~ basi~ position. This CAp 19 exten~ in
the same way a~ des~ribed ~rom tha upper end of the piston rod
16. It can be p~lled, t~gether with ~he pis~on rod 16, upw~rd
into the position of release shown in dash-dot line in FigO 1 .
By turning it 180', e~sily half o~ ~ts contour ~xtends over the
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elongated cros~ ~ecticn o~ ~he container ~, namely i~ the
length of t}le lonyer ellipse ~xis of the contain~r. Naturally,
~0 ' ~otation in one or the other dir~otior~ ~ ~; als~
~u~f icient, depending on what the per~on operating it aonsider~
more conveni~nt. For right-handed person~ or laft-~anded
per~ons~ individu~l po~ibllltle~ of adju~tment with regar~ to
thi~ exiæt. The cavlty lO which, in thi~ e al~o, i~ open in
downward direc~ion, there~r~ ~eleases the spray nozzla D by
pulling the cap 15 in upward direction. The c~vity is a~apted
to the conical shape of the head piece 4 ~o that by movlng the
cap 15 up, a subs~an~ially ~elf-centRring ac~ion is o~Ained.
In thi~ connection, the b~se surface or the edge of th~ ~ap lS
a~ume~ a subst~nti~lly congruent alignment with respect to the
head s~.lr~a~e 3 o~ the container 1. These 6urfaces are in any
~vent sub~tantially simila~ in thelr contour.
In both embodiments, the air ~orced into the inside o~ the
container 1 i~ drawn in via the ~ubular cross sec~ion 17 o~ the
pis~on rod 16. For this purpose, th~ bott~m of the ~ap 15
leavea an opening 20 ln bo~h embodimen~s~. Th~ tu~ular cross
sec~-ion of the piston rod 16 is retainecl prac~ically ov~r ~h~
ontire lehgth thereof so tha~ ~he transfer o~ the ~rawn-in air
from th~ pu~p aha~.ker 21 takes place in the region of t~e low~r
~nd o~ ~h~ pump Qyllnder 6~ For this purpose/ a pi~ton is
~ea~ed a~ the lower end o the plston rod 16. The pi~ton i~
dev~loped as a cuff 22. ~he edge of the cu~f, which terminate~
in a sealing lip `2~/ forms a cup the opening of which faces
downward. ~he ~ealing lip 23 ~lidQs over tha inner wall
~urEace oE the pump cylinder 6.
Ths pi~ton or cuf~ 22 acts at th~ ~am~ tim~ al~o a~ air-
inle~ valv~ Vl. For this purpos~, the piston, which i6 fo~me~
of ~lexible or el~s~ic material, i~ displaceabl~ relative to
the pi ton rod 16~ The relative di~plaoement is limited and
d~igna~ed ~y the ~ree pae~age y in Fig. 7. D~pending on the
direction of movement of the piston rod 16, the botto~ o~ ~ha
p~ ston whioh ~5 yut ded with frictional loa~c rest~ on itC raar
or ~ron~ on ~he piston-rod ~ide. In thi~ way, the air passage
~8 ~lo~ked or rel~ased.
Upon the forward st~roke of ~he piston-rod 16, namely
displace~ent in ~he direction of the redu~tion in ~ize of pump
~hamber 21, the rear of the bo~tom of the cup rest~ against an
an~ular rib 24 which i~ locat~d conc~ntri~ally ~o ~he
lo~qit.udinal-center axl~ of the pl~ton rod 16 and is arranged
on ~he end th~reof. ~hiE~ rib forms a valve~fieat surface. ~n
this way, inlet-valv~ passage hole~ 26 arranged i~ the bo~to~
reqion 25 of the piston rod 16 are closed. The individu~l
inlet-v~lv~ passage holefi 26 are distribu~ed at an e~ual an~le
a~ar~ and extend in the vicinity o~ the inner wall o~ the ~ube
Gros~ se~tio~ 17. ~he back of the cu~ act~ as ~e~ling
surfa~e.
On the oth~r hand, if the ~up bot~om of the piston 22
off from ~aid annular rib 2~, a~ ~akes placo by th~
pulling out of the piston rod 16, the pa~h is free for the
~rawing in o~ the ~ex~ portion of air, the lnlet~valve passa~
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holQ~ ~6 rQceivihg flow co~un~catio~ with ~ aentral opaning 27
in ~he bot~om of th~ cup. Th~ pa sag~ 27 i~ ~ormed by
corresponding clearance be~ween ~he cu~ 22 and a oRntrally
lying mandrel 28 which axially guides lt. The latter fir~ly
ad~oins ~he bo~tom side of the bot~om re~ion 25 of the pi~ton
rod 16 and termin~te~ in a mushroom-shaped projection 29. Th~
cu~f 22 or piston is clipped onto this mandrel 28. The upward-
fa~inq lower side o~ the mu3hroom-shap~d projection 29 create6
the 1 imi~ I ng stop in this direction ~or ~he piston, which is
displaceable with the axial free path y.
For the relea~e o~ the flow path upon the drawing-in
process, the mushroom-shaped project~on 29 ha~ notch-like
rad.ial~y opening inclu~ions 30 which exte~d up to the wall of
th~ mandrel. Dçspl~e the appli~ation of the lower and of ~he
clip projec~ion 29, the path through the pump cha.mber 21 i6 in
this way alway~ kept open. Qn the other hand, upon application
against ~he annular rlb 24, the aforementioned blocking of the
~low path via the pis~on results 6ince the diameter o~ the
kni~-shaped annular ~ib 24 is ~reater than the inside di~meter
of the ~entral pa~sag~ 27.
~ he pi~ton ro~ 1~ is connected in non-106able manner to
the pump ~ylinder 6. ~or this purpose, ~here is a
circum~erential stop 31 in or close to the bottom region ~5 on
the ou~er wall o~ the piston rod 16, ~aid stop cooperating with
a ~atiny s~op 32 on the head piece 5.
~ xi~lly spaced from and substantially ~liyned wi~h th~
hottom region 25 there is an addi~ional annul~r rib ~1 which,
~.. . ..
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however, serves predominantly for quidance and, on thQ othQr
hand, however, acts as second detent step. For th~ attachin~
and pulling oul of the pi~ton ro~ 1~ an i~ention~l act is
re~uired.
The air which pas~s6 vi~ the inl~t valve ~1 ~nto th~ pump
chamber 21 1~ conveyed from the low~r pump end up into th~
region o~ th~ upper part o~ the con~ainer. For this purpo~e,
the pu~p P has an air-outlet opening 33 dlrectly below the
container cover ~. Th~s air-outlet opening 33 is controlled.
An air-outlet valve V2 serve~ ~ox ~his. The ~onnectlon ~e~ween
the lower er.d of ~he pump P and the ~ald air-outle~ opening is
produced by an ~ir-p~ssage channel 34. The la~ter i~ formed by
erti~all~- longitudinally extending yroove in the outer wall
of the tubllla~ pump cyllnder 6. Reference is had to Fig. 6.
The per~p~e~al alo3ing of the air-passag~ channel 34 is
produced by an encasing tu~e 35 which is placed, restin~ well
ayain~t it, on the pump cylinder ~. Sa:Ld encasin~ tube 35 i~
~;Ubs~ tizllly of ~ea}cer sh~p~ and ~y it!s bottom 36 forms ~he
lower closur2 ~ the pump cha~nber ~ In ~he region of thi~
bo~tom 3 6 there is provided ~ cl lp mounting in the m~nner that
~ Flip ~ro~ection 37 enters the~e into a co~espond1ng groove
on the ou~er surf a~ of ~h~ ~ump cyl inder 6 . The cl ip
projection 3' lies i.n a groGve ~8 which is cr~ated as a resul~
o~ the cu~ing of the bottom 36.
For the p~ssage of ~he displac~d air into the air-p~s~age
chann~l 3~ of small volume on the right, said ~hannel has, in
dot,rn-~ard-direc:ted extension, ~ v~rtica1 ~ran3vers~ ~lot which,
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at the same time, is op~n ~owards th~ pump chamber ~1 ~o as to
for~ a pr~ssure-r~lie~ opening 39. As soon as the 6ealing lip
~3 of the ¢uff 22 or pis~on r~aches kh~ pr~ surs-relie~ open~ng
39, there is communic~tion with ~ha atmo~phere via the baak of
the piaton throu~h lnlet-valve paEisage holes ~ 6 towardsl ~he
tube cross s~ction 17 which pas~es at th~ uppQr snd into the
op~ning 20.
Th~ aforementioned control o~ the air-outlet op~ning 3~ is
assumed by a so-called ~icycle valve which is switched into the
U-shaped return path o~ the air. Thi~ i5 a cover ~ody 40 of
ru~ber or 6imilar elastic material or plastic which i5 in t~e
sh~pe of a section of hose. The cover body 40 i~ pushed ~rom
below onto ~he pu~F cylinder 6. The cover body 40 passe~ in~o
a valve li~ 41 of r~duced thicknes~, The valve lip finds its
~al~e-seating sur~ac.e on the outer sur~ace of the cover tu~e
35. Th~ end surface 42 of the latter i~ beveled on the
outside. ~ ~as an angle of about 45' with tip on top so that
the annular, previously free-standing va~lve lip 41 can be mov~d
below without di~ficulty upon the mounting of ~he pump. ~he
end sur~ace 42 te~min~tes -- as ~an be note~ parti~ularly
clearly ~rom Fig. 7 - at a definite distance in ~ront of the
end there o~ ~he air-passage c~annel 34. The portion of t~e
~lve lip which is raised by the outer surface o~ the pump
cylinder ~ pe~mi~ the production there, ~ue to the
~onstruction in rotational sy~me~ry, o~ an anhul~r channel 43
where~y ~he air can escape in the ~anner of a check valve over
the entire circumference of the pump cross section there.
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On thc e~d faaing away from thQ valvo lip 41 and thar~foro
the upper end, the cover body 40 passQs ~nto a fastening collar
44 . The collar 1~ e~ on the end of th~ threaded connQctor 11 o:~
the one individual hole lo and ~ct~ there at the ~ame time as~
annular seal on the said threaded connQctor 11.
T~a ann~lar cover of a pump-hol~ing cap, r~fe~red to a~
~crew cap ~5, d~veloped direo~ly on tho pump cylindor 6,
ext~nds ove~ the fastening collar 4~. The ~readed engagement
permits a ~irm ~i~ht~ning of the fastening collar 44 and thu~ a
good seal hetween pump P and container 1~
Equivalent ~ealing ccndit~ons prev~il al~o in t~e ~econd
individual holé 10 ~rovided with the spray nozzl~ D, since
here, ~l~o, an annular seal 46 lies on the end sur~ace o~ ~he
thread~d co~nector 11, a ~crew cap 47 ~eing arranged over ~aid
~eal. Th~ ~wo screw caps 45 and 47 have sawtooth threa~s, in
suçh a m~nner tha~ a horizontal flank which r~ce.ives high
~orces lyiny perpendicul~r ~o ~he direo~ion o~ ewi~g 1B
~res~n~. The external thread of ~hc threaded connector 11 i9
adapted to thi~. The air ~lo~ in the threaded ~oint i~
intended merely to indicate thè directlon. 0~ course, ~he
horizontal flanks of the thread contact each other without any
gap.
~ he spray nozzle D is of conventional con~t~uation and
will be only brie~ly des~ribed. ~ consists of a pushbutton 48
which actuates a spray ~alv~ V3. Thi~ button i~ continued in a
centr~ ram 49 ~hich i~ held under spring load i~ t~e ~asic
position. The compression .spring acting on it bear~ the
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r~.ferQnce nu~ber 50 and is ~eated in an in~ert pa~ ~ 51, t~o
upp~r sec ion of ~hich forms a s~ring chamber ~or the
c~mp~e~ioh ~priny 50 while i~ lower ~eat~on form~ a
connecti~n to reeiYe the riE;er ~ube 7.
The insert p~rt 51 is clippe~ into the Co~er ~f ~he
ce.ntrally interrupted ~crew c~p 47. There ie involved here a
d.ish-~hap~d portion which b~ar~ on it6 top a sealin~ ring 52
and c~aTnps the la~ter ~inst the bottom o~ the cover of the
screw ~3ap 47. Th~ hole edge of thP sealing ring S2 lies in
tig~.tl.y .~allng ma~ner ill ~r~nt of a transver6e. channel of the
ram 4~, whl~h tran~rse ch~nnel 43 is c~nneoted W~ th ~n outlet
channel ~4 in the cer,tRr of the ram 49. The latter conduct~
the su~tan~e ~o ~e dispensed to a nozzle 55.
The ce,n~ral region below the sealin~ rin~ 5~ is removed
and ls in flow ~on~mur.ic~tion via ~ne or more ai.r ~hannels 56
With the com~ress~d air sp~ce of ~h~ cont~iner 1.
As socn as ~he pushbutton 4 8 is d~pressed, th~ edge of ~he
hol~ o~ ~he sealing rlr~g 52 leav~ the peripheral mouth of the
t:r~ns~er~3e. chanr~ 1 53. ~hus, the liquicl ~lowing i~ within th~
r~e ~ube 7 oan p~ss, ~u~ 'co the pressure above the surface o~
the llq~id ~, i.nto ~e deli~,ery ~ath, with the admission of
optinlally a~omizing air via the air channel~ 56.
Bri.efly ~ummarized, the c~eratlon i~ as fo1lows: By
~ctuat.ion of the pump handle 14 in ~h~3 direction indicated by
~he double-ende~ arrow ~, air is dr~wn via th~ inlet-v~lve
pass~ge o~;enings 2~ into the pump ch~nber 21 upon t~e p~lllng
out p~ ~e piston r~d 161 ~h~.s i5 possible since the cuff 22
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or pistvn lifts with fri~cion lock o~ ~ro~a the ansular r~b 24.
'l~he a-ir passes throuqh the passage ~7 as well as the lnci~ions
30. Upon reaching the end posltion, th~ piston rod is pres~ed
downward. Th~ rear of the piston applies i.t~lf in s~aling
manner against the ann~lar rib 24. Th~ ~ir enclosed in the
pump ch~mher 21 pas3e~ via the pre~su~e-r~lt e~ opening 3~ into
the air pa~a~e channel 34 whiçh exten~1s in opposite direction,
so as to pass into the upper part o~ the container in the
r~gion of the air-outle~ valve V2, In ~orre~pon~ing m~nne~,
the valve lip 41 ~ s off re~iliently. Upon reaching the end
po~ition, the ~ealing l~p 2~ of the pi~ton pas~;e~ over the
pressure-relief op2ning 39. ~ue to the commllnication with the
atmospher~, ~her~ i8 immedia~ely a relief of pres~ur~ iA ~he
pum~ chamber 21 so that no residual p~e~ure i~ pre~ent which
coulcl aause a creeping or 6pringing back of the pi~ton ~od 16.
~f~er a few pump strokes, E;ufi~io1ent pr~s,-lr~ is present and
the dispe~ser Sp is now ready ~or use.
In ths em~o~iment shown in P'lg~ 1, in or~r to ~ing abo~lt
th~ basic po~itiorl of I he dispen~e~, the ~opcap 19 whi~h ~ct6
th~re ~6 pump handle 14 need merely be E~wung in~o ~he po~ition
~hown in doc-da~:h line in or~er thel~ to en~er into the position
~hown in ~ig. 2.
:~n the ~econd embocii~r.e2lt the separate top ::ap bears the
re~renae nulllbe~
~ he optior~al eguipping of ~he lndividual holes 10 h~s
alre~dy ~eer, discussed in detail in the pr~amb' e to ~h~
~pe~i~ication .
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The features o~ the invention disclosed in the above
specit`ication, tlle drawing and ~he claims can be of importance
both individually and in any de~ired combination ~or the
reductlon to practic~ of th~ inv~ntion. All features disclo~ed
are essential ~o the invention. There i~ herewith al~o
include~ in the di~closur~ of the applioation the entire
diEi~losure of the corresponding/acc:ompanying priority papers
~copy of ~rior appli~ation).
.
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