Note: Descriptions are shown in the official language in which they were submitted.
U~/13/~ U~ '~' ~003
JU~-13-97 FRI 10:41 CA 02207685 1997-06-13 JUN 13 '97 10:57RM
T~ANSLATIO~
,t~otn: . .
WO 96~ B~ PCT¦EP95~047gO
shaft, iin particul~r extru~er shaf~t, which is made up of
~egments:
Th~ invention rela~e~ an appa~aeus fo~ the the~mal,
mechanic:al, c~hem;ical and/or phy~ical txeatme~t c~f~ a ~roduct
in an in~erior ~3pace o~ a }l~using hy mean~ of at lea~3t one
ro'cata~ ~ extruder ~haft, which compri~e~ in~i~ridual segment~
conneçcf.d to one anothe~ by ~olt~, the bolt~ passing through
hole Ye~ion~ i~ the segments and being i~erted into
~reads ' ~hreaded holes or the like, and a circllm~erential
~;urface,o~ the extruder sh~ft being pro~ided with th~ead
~light~
Sh~ts o:~ thi~ kind ar2 r~q~ired in many sector~ o~
indu~t~y and technolc~gy. In general, a ~;plined sha~
cor~nected to a motor or a transmission, said ~plined shaft
eng~ging in female spline~ ~or~ned in an axial hole in the
~egment. In the ~rese~ ca~e, the main concern is with
~xt~ude~- ~hafts with ~crew flight~, the extr~der sha~ts
performing a desired thermal andJor r~ h~ni cal, chemical or
- phyl;ical .treatmeTlt of a product. Thi~ ~an~ that the segrnent~3
a~e act~d upc~rl by torsional forces, these being accepted
~hrough ~he engagement of the 8pl~ ned s~aEt in ~emale
.~plines .
.
LAWYEI~S' A~D M~RCH~S' T~SL~l~ON BUREAU INC~
l~g~l, FirlanciYI. Sclcnd~c Tcchnic~ cn~ r~
T~ l2~5~x~$y3l 1I B~O~DY/~,Y.~EWYORK.t~Y )~X~ F ~: (212~n
O~/13/~7 11:03 ~
JUN-13-97 ~RI 10:41 CA 02207685 1997-06-13 JUN 1~ '97 10 5~~~4
TR~'3I~no~
~rom: - 2 - -
. .
An 2!ppa~a~us o~ this kind is, di~closed, fo~ exa~n~le, in
9wiS9 Pate~t 674, 474 a}ld international patent appllcation
PCTJcH 8:lfoo~;9. In both case~, a product i9 broken up
~nechanlcally, in part~cular b~oken up into fi~ers, and
therrnall~ rea~ed, by two i~teracti~5 exr~uder shai~t~3.
The di adva~tage here, above all, i~; tha~ ~che ~eg~nen~s
ru~t sol.~d to the ~3~lined sha~ in the region of che fem~le
~line, pa~icu'~arly wllen txeating li~uid produots, ma3cing
t~ese -~;e~rnents extremely dif~icul~ ~o remo~re and, in
particul~r, to exchange
Thc segrtler~t~ fu~thermore require a relati~ely larye wall
~chickness in order to transmit the torsional force~ froTn the
F~c~ew flight~ ~o the splined shaft.
Xo~ves, the p:resent ~n~n~ ion is not ~estricted to 2~n
extruder sha~'c alone, but can be empl~yed ~ith any other
shaft made up c~ egn~t~.
It is a~ underlying ~}~j ec~ o~ ~he pre~ent in~en'cion to
ilr~ro~e the connec'cion between the segment~i and a sha~t and,
in particular, tO makQ it easier to ~ake the sha~t apart.
Thi~ objec ic achi~v~d by ~rlrtue of ~he $act tha'c the
~ 'chreads ~ threaded hole or ~h6 like and the hale ~ection
leading ~ the respec~ivel ad~ ac~3nt 9egt,~te~1t are ad~ oined by
a loca~i.on ~ace which hclds a guide ~u~3h ~h~lgh which ~he
bc1t i~ - insert~d.
. .
.
. LAWYERS~ ~D MERC~TS~ n~sL~TIoN s~EAu rr~ c.
~1~1. Fin~n~l. Sdc?,sific. ~tct~nlc~l ~n~ P~lcn~ Tr~
Td; 1 12J3~29~931 It BRO~D~ .~E~YOR~Ny lo~ f~: ~ztz)~2~8n
06/13/~7 11:03 ~ CA 02207685 l997-06-l3 JUN 13 '97 10:57~M
JUI~ 97 ~RI 10:4Z
TRANSL~TIO~
~om.
Thi'~ s~uide bu~h ~as ~h~ con~iderable adv~nt~ge that,
si~ce a nurllber o~ ~uch guide bush~3 are provided on a
circular ring, the tcrque forces ac~ing on the ~ha~t are
~plit iIitO comp~nent f~xces, which are taken l~y the guide
~u~3he~. iThe ~lse of a ~plined shaft i~ ~urt~er~nore super-
f l~us, ,~hereby making it impa~sible for the ~egment~ to rust
~c~lid wiith this splined sha~t. The ~act that the gllide ~ushe~3
are prefierably composed of s~ainle~ ste~l also en~ure~ that
there is. ~o ~3tir~g between the indivldual se~nent-q, thus
allowin~ ~hem to b~ ea~ily detached ~rom one anGt~e~ a~d
allowin~ indi~rldual ~3egme~ts tc be exchanged is~ a 8imple
Tn~nne r,
In ~dditi~n, ar~y axial space present in the ~egr~ents i5
no~ o~:cupied ~y che 8pl ~ned sha~t but can now be u~ed ~or a
medium fi~r coolir~g or hea~ he c~haft if re~uired.
It is ~urrhermore possi~le to maXe a sleeve ~hell around
the a~ot~emen~cioned axial space relatively thin if, ft~
exarllpl~, the ~1~3e~e 8~ell is provided with 6crew ~lights, ae
i5 the c~~;e with an extruder. The 6crew flights then
t~emsel~eQ streng~hen ~he relati~ely ~hin w~ll o~ the sleeYe
E3he7 1 .
~ 5~el n~ ~ e~ o~ e~ternal lubricat~cn points i9 ~urthe~lnore
con~ide~bly reduced ~ince the s~a~t can ~e connecred
directly to a tran~mi~s~on ~lange o~ a tran~mission sh~t ~y
w~y o~ a~ ~xter~al flan~e or directly to ~he tranfimi~sion
YERS'~D M ~RCHC4rrrS'TAl~YSI~ O~ R~n~AU I~C.
icn~ r.k~ d P~cm ~r
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- C.
U~/13/~7 11:~4 '~' ~ uu~
J~N-13-97 fRI 1~:4? CA 0220768~ l997-06-l3 JUN 13 '97 10---57R~
~RANSL'ATION
~l ange .
~21C~ location ~pace prefe;rably ha~ a depth whlch
, corre~po:ncE~ approxlmately to half a length of the g1lide bush.
A~ a result, the guide bu~es a~e ac~-orrnlorl~ted completely in
the co~ sp~ndin~ location space~3 following the a~embly o~
the ~hai~ o that to~ioncll or torque ~orcee are~ distri~uted
~n~. ~o~ y tcs the guide ~u~he~ as shear ~orces .
S~ n e a numbe~ of guicEe bushe~; are pro~rided orl a
ci2~cular ring. any 91ip ii3 also avoided by mearls o~ th~3 guide
~ush~ c is o~ no conae~uence here whether ~wO extruder
shaf~t~ teract and rotate l~s oppo~3ite directions or in the
sa~ne direction.
Eu~ther advan~ageR, featu~es and details ~ the
in~en~ion will emerge ~rom the following de-~cription o~
p~eferre~ exemplary elTlh~imen~c~ and ~rom the d~awing, ln
which:
Figi~re 1 ~how~ an e~ploded repre~entation o~ a
lo~gi~ldLnal Rec~lon t~rcugh an extrude~ sha~e, which is
~langed to a tran~mission;
Fi~re 2 ~hows a lcngitudinal ~,ec~ion ~hrough the
~ extruder shaft i~ ac~ordanc~ wath Figurs 1 ~n th~ positlon of
u3e;
~ igure 3 s~ow~ an exploded represen~ation of a
longitud~nal section ~hrough a ~urther exemplary embodiment
Of a~ ex,trud~r shaft, which i9 flanged to a trans~nission;
LA~,RS'A~D ~RCHA~n~' ~RANsLAn~ BUREAUI~C.
L~l. F;~d~!~ ~leminc ~xh~ nd ~cn~ rr~c~
~cl: al2~34~Z9~31 1~ 11110~ 1W~y~tEwyoR~ ' l~g4 F~ 2Wm
tr~
U~ V I ll: U~
JUN--l3--97FRI l0:4~, CA 02207685 1997-06-13 JUN 13 '97 10 57R1~1
~IIO N
Fi~ure 4 shows a longit~; n~l sec~ion throùgh ~he
ex~rude~ shaft in accordance with Figure 3 in the posi~ion of
use;
Fi~ure ~ ~how~ an ~xploded represe~a~ion of a
long1tu~n~l ~ecti~n ~hrou~h a further exe~plary em~odiment
an e~truder ~haft, whic~ i~ flanged to a tranemission;
Figure 6 show~ an exploda~ rep~esentation of a
lo~gl~udinal sec~io~ throu~h a ~urth~r ~xemplary embodimen~
o~ an extrudRr shaft, ~hich i~ flanged ~o a tran~mi~
Fiaure 7 Yhow~ a cros~ ~ection thro~gh the extruder
sha~ ih the pos~ti~n ~ u~e in accordance with Figure 4,
along line V-~,
FiSures 8 and 9 show a longit~1 n~l ~ection through two
furt~er exe~plary em~odim~rl~s ~ extr1~der shaft~ in posi~ions
of use.
Acjording to Figure 1, ar~ extruder s~aft 1 co~npriseq a
plurality of laegments 2, ~ and 4. Each saglrlent ha~ an axial
hole 5 ir~ a slee~re shell 6, a circum~e~ential ~ur~ace 7 of
this slqe~e shell being pro~i~ed with screw ~lights 8~
Segment 2 ha~ a plurality o~ 6crew flights a, while segments
~ 3 and 4 ha~rc just one ~c~rew flight 8, ~or in~3tance.
Th~ 6egment~ 2, ~ and 4 are held tc~gether by a pl~l~ality
of bol~ g, thés,e bolt~ ~ pa~3sin~ ~hrough corre~3pondi~ hole~
in ~c~e ~egment~ 2, 3 and 4 and er~aging i~ ~oles. For this
purpose, ~egme~t 2 ~as po~k~ holes 10, a deep step ~n thi~
,
i L~WYE~S' ~D ~sERCH~r~rS~ TR~SL~T~O~ ~UREAtJ ~C
l. Fin~nei~l. Seb5!~1ill~ rc~hni~5nl ~ml P~lrn~ T. - ,-
~Jsu~ RO~DW~Y~5.~EW YOR~.~Y 10X~ F~5 U12) ~ n
C~ rl S U ~
v ~ v v ~-- ~ ~ u u ~
J~ - 13 - 97 FRI 10;4~ CA 02207685 l997-06-l3 JUN 13 ~97 10:57R~
.
'~ANSLA'rlON
~om -6-
. . , ~. v
po~:kec }iole lO being des1 gr~ed ~a a ~hreaded hole 11.
Ad~ ~i~ir~,g the threaded hole ll 1~ a widened loca ion spac~e
lZ, intc~ which a guide ~u~3h 13 can be inser~ed in the
po8i~,0rr of use. ~L depth t of thi3 location space 12
~o~reE3pcndQ approxima~el~ to hal~ a ler~gth 1 o~ the guide
bu~h 13
Shf f~llowing segment 3 has a respecti~re location space
12 1 a~c. 12 . 2 on each side of a hole section 14 . The location
~pace 12, i serves to hold 'che ~ther half of the guide ~u~h
13, while lc~c~tion -~pace 12 . Z ~er~es ~o hold a guide bush
13.1 between s~rn~nt 3 and ~egment g. In a co~responding
manne~, ~egment 4 also has a location ~pace 12 . 3 f or holding
the ~ec~nd part of the suide buqh 13 . l.
Ad~¦oining location ~pace 12 . 3 i9 a ~urther hole section
15, whicp opens into a wid~ned ~ead ~3pace 16. ~rhi8 head space
16 E;er~es to hold a head ~1 o~ ~he bol~ 9.
Se~ent 4 ~ur~hermore ha~ a disk space 18 in ~ w~ich an
e~d platie 19 can be inserted. Thi~3 end plate 19 is secured by
short ~c~eews 2 0 ~7hich ~as8 through ~tepped holes 21 in rhe
end plat~ 19 and eng~ge in t}~eaded holes 22 ~ n ~egm~nt 4 .
A ~ n~ction ~la~ge 23, wh- ch 1~ kewi~e has thrsaded
hole8 2~, i8 placed against se~nent 2 at the ot~e~ end ~rom
p~cket hole la. A tran~mission fla~ge 26 on a t~an~3miEE3ion
sha~t 27l can ~e connected to the cor~ect~on ~lange 23 ~y
b<~l~s 2 5i. Ir~ thiE3 arra~gement, the ~olts 25 pa~s through the ---.
.
r~w~ERs~ AND MFRCHA',~ TR~SL~nOr~ BUREAU l~lC.
, Fia~r~ Sc4nlinc,'r~hnlc~l ~n~ P-t~nl 1'
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C~
06/13/~7 11:05 ~ . ~009
JU~ - 13-97 FRI 10'4~1CA 02207685 l997-06-l3 JUN 13 '97 i0 ~7R~
T~NSL~ON
Ji~m; -7-
tran~3m~~18~0n fl~ge 26 and are ~3crewed into the threaded
hole~ 2~.
In . Figure 2, it can b2 ~;een that segme~ts 2, 3 and ~ and
~he erld plate 19 are j oine~ together by the corrsspondlng
bolt:3 ~ and short ~ rews a~ to gi~e the extruder gha~ 1. The
entire extruder sha:~t 1 ~ J3 furthermore :Elxed on the
t~ansmi~ n fla~ge 26 o~ t:he transmis~ion ghaft 27, via ~he
connecti.on flange 23, by mean~3 of the ~olts 25.
Th~: extruder ~3haft 1 and ~he tr~n~ sion components are
in ~chis ca~3e 9ea'ced iI~ a housing which i:i made up of various
cham~er section~ 28 . l to 28 . 7 . ~t is al~ po~sible to see an
inlet 29, through which material to be ~reated can ~e
i~trodu~ed into an interior space 20.
Th~ exem~lary emb~dimen~ of a~ extruder shaft 1.1 in
aceordan~e with ~igUrea 3 and 4 differg from that ~;hc~wn in
~igures 1 and 2 ~ n that a 8egme~t 3 .1 is o~ s~bstantially
wlde~ de8ig~ and is pro~rided with a plurali~y of ~;cre~
f lights 8 'ch~n ~egment 3 in ~igure 1. In correE~Fonding
fashion, add~tional conn~cting ~crews 3~ are pro~rided ~or
connectir~g se~merlt 3.1 ~o ~egment 2, these screw3 being
. ~cce~si~le to a oo~responding ~;crew~n~ tool throu~h ths
loca~ion. ~pace 12 . 2 and p~rt of hole ~l~ction 14 .1. In this
~a~, it i~; moreover possible to co~nec~ a large nl~rnbe~
~egments to one ano~cher (see Figure 6, extruder sha~t 1. 3) .
L~YERS'A~D ~lE~CHA~rrS'TR~NS ~llO~ BtnREAU INC.
~I.F;~i~ ~;tn i~ c~;c~ ~nd ~lo~.~J'~--
S~ 12)~LL~U~'3~ RO~tW~Y.~EW YO~ ~Y lOo~ F~:l21~ n
Cc~ t,t ~,.~
u~ u~ -a~ .
J~-l3-97 ~RI 10'.44 CA 02207685 l997-06-l3 JUN 13 '97 10 5~ lQ
T~SLAnO~
In the ~;a~ne ~7ay, hc~ever, ~es~rnen'C 3 .1 can al~o be
~nn~ct~d directly to a tran3m~ ~ion flange ;~6.1 }:~y t~e
c~ne-~t; ng sc~e~s 31, a~ ~hown in E~igu~e 5 Thls ~ran~ sion
flange ~6.1 ~ s 6eated in a t:~an~mi~&io~ 33 . It ~ s ~urthe~more
i~c~ t0d here that seall~g rina:3 34 1 arld 34 . 2 can be
qicuated between t~e indlvidual segmenl g 4 and 3.1 and the
tras~e~mi~i3ion rlange 2 6 .1 .
Ure 7 sho~:~ a h~using plate 20 . 6, which ~r~ound~; t~
l~terio:~ spa~es 30.1 and ~.2 ~or halding two ext:~uder shaîts
la and lb. Hole~ 3Z a.re fo.rmed in ~he hou~3ing place to allo~
sut-ce~s i~re housi~ plates IO be coupled to one another .
Xole ~3ection 14 .1 and the location qEIace 12 . 2 fo~ che
guide b~sh 13 . 1 ~an be s~e~ in the extruder a~af t . - ~
In ~n exempla~y en~hoti~ ment cf a twin-cham~er ext~uder in
accordance with Figure 8, an exrruder shaf~ 1. 3 ~i~nilar to
tha~ i~ Fi ~ re ~ i~ inserted into the co~responding chaniber
ectiors 2a. How~er, a friction plate 35 i~ provided in the
hou~ 28 at th~ outle~ o~ ~he extruder sha~t 1,3, this
~ricti~ plat8 forming a dl9charge openi~g 36 for the
matericL1 trea~ed. This di~charge opening 36 i8 cor~Lected to
the i~rior of the ex~rud~ via an annular space, denoted ~y
arrows 37. ~Sel~:, i~ particular, is discharged ~om the
pla~;ti~s ~egion th~o~gh thi~ ~nnula~ space.
I1~ a ~u~ther ~Ye~pl a~y e~o~ i m~t O~ th~ in~ention 3ho~n
in Fig ~re 5, in con~ra~t , a cone 3 9 i ~ inser~ed into
~wYERs- AND I~RcllANTS' ~RA~ISL~T~Or~ BURI~AU ~C.
~ E Fln~nc;~l, Scienlifi~ tccbnk~l ~ad ~enL r
T~l: al2) 3~934l~31 11 B~O.~DW~Y. t.lEW YORK. t ~
JUN - 13 - 97 FRI l0.~ CA 02207685 1997-06-13 JUN 1~ '97 ,10.:57R~
TRANS~IION
J~m~
di~charqe plates 38 Thiq cone ls ~anrlecc~d tCl a connection
plat~ 41 by a ~crew 40 This cone 39 too i~; ~upported
relativ~ to ~he ~egment ~ ~y corresponding guide bushes 13.
Th~ cone 39 fCX~I~ with ~he discha~ge platea 38 a conical
~3pace 4~ t~rough which the product tO be treated can ~e
f7ur~her broken up in~c~ fibe~s and di~charged.
,
t~W~ER5' A~D MERCHA~S' ~R~sl~TION BU~AU I~C.
~1. Fin~n~l~l. SCI~Ii~c t~hr~k~ ~nl S~
te}: 121Z~429311Ri31 11 B~OADW~Y.~EWY~R~Y 10G~ F~: ~12)~
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