CA2125955A1 - Razor, in particular a disposable razor - Google Patents

Abstract

ABSTRACT OF THE DISCLOSURE

In a razor with a handle-like lather container and detachable cap that covers and can be moved relative to a lather discharge valve of the lather container, which valve is enclosed by a linking ring, at least two projecting catches are devised as guide pieces in the cap approximately radially opposite each other on either side of a central pin, and can each be sunk into a corresponding slot in the linking ring, each slot being separated from a guide surface of the linking ring by a bead. Each slot can be flanked by two beads, which are adjoined by a wedge-shaped, upwardly inclined surface.

Description

'94 06~14 11:49 ~ 703 63753~ IIWR TUi~ER 82 `` 21259S5 ~azor dèvicc, in p~rtieular a throw-away r~zor The invention rclates to a ra~or devi.ce, in particul~r ~ throw-aw~y razor, ~s se~ ~orth in the cla~si~ying pOrtiOIl of ~he independ~nt claim.
A razor dcvioe ~ th~L kind is to be found in Europe~n p~tent application No 0 322 486. In ~he ~rrangement di~closed ~herein, ~n i.nternal fin of a cap i~ rot~t~d on ~ co11ar around a central ~xis, A
small rib which projccts frcm 1:he collar indicat~ tl1e ~ransition fron a rear~ard trar~portatlon position into an aCtuation po~ition follcwing same. In the actuation ~o~it:ion the intcn~a~ f~r of Uhe cap re~t~ on the gu~de surface ~nd i~ r~oved into t~le f~n ~osiLion l~pon f.urther rot~ry r~nent of the cap ~bout the axis of the valve tube ~s f~r ~B the reCeB6 pDrtion ~i~}l i~ p~r~llel to the axi~.
In a razor d~vice as ~l~wn in European p~tent specification No 101 767, the neck cxtends inclinedly relativc to the c~xi~ of the valve tube, while the port~on of the razor hea~, w~lich engages the fa~e of a user~ is dispvsod outside an extrapolation of the cros6-sectlonal prolongation of the handle portion and thc cap fixedly engages into the handle porti.on i.n the fonm of a s~.J~w-tyye or ~n~p-type fixing, BO th~t the cap i8 not releaso~ f~n ~he handle portion during nonmol ~huving ~0 oper~tions. ln order to extrflc~ the shaving foam a u~er must renove that sap fron the elongate a~ro~o]. ~ont~ine.r ~ich scrves a~ the ~o~n oontainer, ~nd re-fit it aft~r the sllavi.n~ operation.
In Gonsideration of that st~te of the art ~ld its deficiencie~, the inventor set himself the aim of slmplifying manufacture and handling of the razor device described in the opening part of ~lis specification, and in parti.cular improving th~ ~p~fat;i~llal ~afety thercof.
That object is attained by the teachilly se~ forth in the independent claims. FuIth~r advantageo~s configurations are set forth in the appen~ant claims.
~0 In accordance with the inv~ntion, di.sposed iTl the cap ~ an in~ert with an axial flow pas~ag~ a~ a central projection w~liGh ls neYr th~ contalner and throug~ .ie~ t-he flow passagc passes, wherein the ... . .

'94 06~14 11:49 ~ 0703 637538 MWR TUR~ER 03 212595~

insert has an outer annu.ler edge fI~n~ wllich two retaining no8e8 project in parallel relationship w.i.th thc axis, which retaining nose~ can be Jowered into slots in t~e sliding g~lide ring al~d Lhus into the fo~m positlon, In additjon, it has been fsund ~e~irable for the surf~ce of 5 the gujde ring t~ definc a t~nsportatiorl ~osi~ion o~ the retalnlng noses, and a respccti.~e shoulder ~urface bctween ~hat sur~ce and the ~lot ~o define a r~diness po~ition.
However, in accordance with the i~ention, in the cap at lea8t two retaining noses are dispo~ed as guid~ ~or~.ions on both side~ of the ]O central proiection in a~roxin~tely radial~y ~ppositcly disposed relationship and ean each b~ wered into a respect~ve onc of plurality of slots in the gu~de ring; ~ach of said ~lots is separated by neans of a radia] bead or projection fran tlle guide sur~ace of the gu;~e ring and forms an obstae~e which C~l ~e Ielt and heal~, in the transition into the foa~n pos~tion; as ~ reSult, the user know~ whcn he is at the thre~hold of the foam position and deliberately an~
oon~ciously mov~ the c~p ;~t:o that y~-~ition. The arrang~ment of thæ
retaining no~es and the slots on~res a 6af~gu~d against accidental tilting of the cap out ~f thc axi.s ~f the devioe.
The feature tha~. thc guide surf~ee for each retaining no~e i~
pr~vided ~ith a retainillg slot for f,ixing t~le re~aining nose - ~nd ~ocking the c~p - in a shaving posj.tion, is vi.ewed a~ a ~,urther advantage in ~erms of handling of the razor dcvice. The retaining slot i~ delimited by a tha.eshold mean~ which is fw.~ed out of the guide 2~ 6urfa~e, and a ~tep ~'ront facc.
In a further ~nbodiment of ~ ding guide ring each of the 610t8 i6 flanked on ~oth ~ides by a p~ir ol beads or projection8; re6peotive taper 8urfaces risc from each thereof so that ~t the side of ~he bead or pr~jection, there i~ ~ very dccp J~ce.ss iu~ which a retsining no~e can be di~posed.
FDr the purposes of g~idance of the cap, it ha~ al50 been ~o~nd desirable for the retainin~ noses to ~eorea~e in rcspect of their crci8-~ecti.on tCWrdrdS their free edges so t}~t they can bo ea~ily engaged into the co-op~rating retaining means.

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` '94 ~6~14 11:50 ~ 0703 637538 11WR TURNER 04 2125~

hdvantageou~].y the rati.o of ~he ~pacing of the g~ide surface frc~ the surface of ~he guide ring to the spaciny thereof relative to the ~.oWest part of the slot. i~ t.o be abou~ 1:5. The height of the ~ead or projection ~nd/or the threshold rneanS is to corrc~pond to ~he gp~cing of that guide surface fr~n the surf~ce of the r~g.
In accordance ~ith a further fc~t~re of t~e i.nvention a ~atiD of the arcuate length of the guide surfece to ~ e arcu~te length of the ring s~rface dispDsed in f~nt thereof i~ about lsl ~nd/or a r~tio of the arcUate ]ength of thc ~Nidc surface to the arcuate length of the ring surface disposed in front lherco~ i6 about 4:1.
A particularly ~vanta~eou~ oonfiguretioll Or the razor device of the general kind sct forth ~s in accordance wit~- the invention; in thi~
ca~e also in the r~p at. lcast ~w~ retainin~ noses are disposed guide portions on both side~ of the cen~ral projcction in subgtantially radially oppo~i.tely dispo~ed relationship. Hnwev~r thcy proj~ct peg-l~ke at a spacin~ relative to the in~ide surface of the cap from r&dial flap portions formed thereon, in par~l~el relation6hip with the axi8, and c~n each be lo~ered int.o a respoct.ive Tecess in the guide ring the rece~8es being of corresponding cross-section and being closed towards the edge where~n as~oci~ted ~i.th e~oh rcce6s at one radj.al ~ide is an abut~ent limb which sticks ~p fro~ l-he ~rface of thc ~uidc ri~lg; the retaining no8e~ can be lowcred into the rec.esse~ to pro~uGe the ~oam po~ition.
In this embodiment an ~nnul~r radial rib projects beyond the peripheral suIface of the guide riny the diameter of thc ~nnular radial 25 r~b ~pproximately c~rresponding to the i.nside di~neter of the ~pper cap portion ~hich has thc .r~dial i:lap portions and whioh is ~eparated by a retaining rib that project~ t:~war~s ~le axis fron a 61.eeve-6haped lower c~p por~ion of larger diamcter.
In addition t.he hcight of thc r.~dial rib is o corre~pond to approxlmately a fifth of the ~le.ight of the guide ring, while the height of the ab~tment J~mb ~pproxim~tely ~rresponds to ~he height of the rad~al rib.

94 ~16~14 1 1: 5~ 2; 0703 637538 11WR TURNER 05 212S9~5 Furth~r advantag~s, ~eal.l~es and details of ~he invention will b~
apparent from the lollowi~lg description of prcf~rred em~odinent~ and with reference to the drawings in whi~h:
Figure 1 i6 a front vi~w ol a tw~-part razor device with a S shaving ~o~m cartridge and a c~p c~rrying a blade hcad, Figure 2 i6 a pl~n vicw o Figure 1, Figure 3 is a view partly in section through Fig~re 1 wlth the cap rai~ed, Figure 4 is a view in par~.ial ~ect.ic)n through Figure 1 3hc~ing tr~nsfer of th~ cap i.nLo a fo~m position, Figure ') is a view on an elllarged ~c~le in pa~ti~l section approximately along ].ine V-V in F'i~ure 4 ~hrough the cap, Figure 6 is ~ plan vi~w of a sliding ~uide ring, Figure 7 i8 a perspectiv~ view of ~ y~r~ of thc guide ring, Figure 8 i6 ~ view in an axial direction into the i.nterior of ~he cap, Figur~ 9 js a vicw apprDximatcly c~)rrespor~ing to ~igure 6 of another embodiment, Figu~e 10 is a di~gr.~mmatic vi~w of a deveJoF~ent of Pig~re 9, Figures 11 and 13 ~re rear views of two embodiments of the cap, Figure 12 is a view in 6cction through ~'igure 11 taken oLcng line XII-XII therein, Figure 14 is a view in section t~)ugh Figure 13 taXen along line XIV-XIV therein, Z5 Figure 15 is a perspectiv~ vi.ew of a part of Figure 14, Fi.gure 1~ view of a ~urther gui~e ring which i.5 shown on a reduced scale in ccn~arison w; th Figurcs ~.~ and 14, Figure 1'7 is a ~ view of Figure 15, partly in 6cction taken along line XVII-XVIl thc~ein, ~'igure 1~ i8 ~ VJ ew in p~Itial section corresponding to Figure 3 6howing a ~rthcr e~bodiment, Figure 19 is a view in partial ~ti.on corrc~ponding to ~lguxe 4 with the cap in thc f.o3m position, '94 06~14 ;1:51ZC 0703 637538 MW~ TURNER 06 .
212~9~ -Figure Z0 is a 6ide v~ew of ~-he Figure 2]. str~c-ure, an~
Figure 21 i~ n view of a detai] on an ~llarged 8cale from Figure~ 18 3nd 19.
A shaving foam cartridge 10 has, at the end, which i~ the upper end in the drawin~, of ~ts cylindcr-like foan~ con~ainer 12, ~ coll~r 14 of a dismeter d of a~ou~ 20 mn ~nd a hei~llt l~ of about 8 mm, fron which ~ valve tube 16 of a v~lvc 18 (not ~hown in greater detail) projects upwardly~
~ le cylindrical ~].eeve portion 20 of ~ ~ap 22 of li~itbdly flexible material, on ~licll a neck 24 of U-8haped cross-seotion is fcon~d, i~ fit~ed on to thc sha~ing ~o~m cartridge 10 which is sub6tantially foDmed from rigi~ u~t~ri~l. The neck 24 goe~ into a blade head 26 WhiCh extends transvcI~e]y relati.ve ~hereto ~ whose surf~ee 27 i~ inclined a~ an ~ngle w of about 40 tow~rds t~ lon4i.tudinal axi~ A
15 of the shaving foam caltIidye 10, as shown in ~`igure 3, and covers a double blade 28 ~qhose sllaving edge Z9 extends a- a ~nall 8pacing relative to ~ prvtec~ive limb 30 of the blade head 26. Here and in the other embodirents, the dovice may use both a rigid blade head 26 and ~180 a so-calle~ pivo~ing head.
In the transpDrtation position of thc tw~-p~r~ razor device 32 t~e cop edge 36, as ~hown in Figure l, bear~ ag~ t a parallel ~rking area 38 o~ ~he shavin~ foam cartridge lO whi~, when the cap 22 is di3placed in the prc~ing direcLion x, i6 ccvcred Gver by same.
PrDvid~d in the c~p interior 40 on tl1e longitudinal axis A is ~
centra]. pro~ection 42 of the c~p ~, wi~l~ an axial pa~sa~e 44 and a shoulder ~tep 45 which can bc ~n therein. Extending from the Rx~l -pass~ge 44 i8 an incl~ned ~assage 46 w}l~4e m~uth c~ening 47 can be seen at the inclin~d back or outsidc ~UT fac~ ~s of Lhe neck 24 or the cap portion sdjoining s~me.
~0 1~ in~lined yassage 46 i~ disposed in a shap~d rib 48 of the cap 22, whic~ ~ of ~micirculal crv~ ec:~ion - extends radially fro~ ~he central projec~ion 42 and e~rries a radial linb pvrtion projecting f~om ~, . ~ :

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. '94 ~6~14 ~1:52 ~ 0703 637538 ~W~ TURI~E~ 07 212595~

the rib a cres~-like confi.guration, as a retaining or detent ~ose 50.
The retaining nose 50 dccreas~ or tapers in w:oss-~e~tion at its free edge 51 ~cee Figure 5).
Di~posed on tlle diam~ter 1~ whi~l is de~ined by the edge 51 i8 the edge 51 of a second rctainillg or det.ent nose 50~ wnich i~ olco 8haped out of the cap 22.
In the t:ransportat.;on ~ositi~n, the twn reLaini.ng no8es 50 ~nd 50a rest on a guide ~urface 68 ~t` a sliding guide ring 70 whi~h surnounds the valve 18 ar.ollT~ it:s valve tube 16 and is connected to the shav~ng foam cartridge J0. 'Jhe guide ring 70 i~ provided, on a di3meter E of a length g of ~8 mm in this case, ~ith twn ~loL6 72 which lie ln plHn view on the diam~ter ~, being of ~n internal wid~h i of ~bout 3 ~m, ~he slots being adJoined at one sid~ by a b~ad or ridge 74, toward8 the guide ~urface 6B. T~ guide surface 68 js d~limited st the other end by 15 a step front 8urface 76, a~nve which ie dispo~ed the surface 78 of the ~ing.
If the height m of the ring 70 is for example 5 mm, then the spacmg n of thc guidc surface 68 fT~m the ring ~3urfacc 78 is about 1.5 mm, With a rr~ximum periphoral lcngth of tlle guide surface 6a of ne~rly 20 ~m.
Puring transportation, the ~etaining nos~s 50, 50a re~t on the guide 8urface 68 and can be moved ag~inst the two beads or ridges 74 by ~tating the cap ~ (clockwise direction in Figure 6). Ihen, fron that readiness po~ition, the retaining no~es 50, 50~ are Jowered into the 810ts 72 for thc ~o~n positi.on, with a clear clicking noise on overco~i.ng the obstacles, by a pressure bein~ applied to a pr~s~ ~u~ace 80. In the f.oam position the valve t~be 16 i6 pressed downwardly by the ~houlder st~p and opens thc ~.~y for the foam to come ou~ of the interior o the container; the foam pa8ses through the p~sagcs 44, 46 to the mou~h opening 47 ~nd thus, pas~in~ through the neck 24, iss~les fron the rear ne~k ~urfaee 25.

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~' . ' ' 94 ~16~14 1 1: 53 ~ ~17~13 63753g l)W~ TUR~`IER 08 -212~9~5 The user tako~ that: issuing ~having foam for his shave, mcves the cap ~2 into the transpor~ati~n position thereof, and can t~en use the blade head 26 in the usual m~nner.
In an ~nbod~nent. of thc gu;de ring 70 which i~ only indicated ln Figure 7, at a spacing z fI~m the s~ep ~ront face~ ~6 ~he ring may have threshold meatls B2 for rc6pectively defining a re~pec~ive rctain~ng 61vt 84 which receives o~le o~ tlle retaining noSes 50, 50a, t~ hold it in the ~having position, me sliding guide rin~ 70a in Figurc~ 9 and 10 ha6 a re~pect~ve 10 bead or ridge 74 on each side of its ~lots 72; fr~n the bead or ridge 74 a shallow taper surface 6g risc~ ~t an angle wl to a centr~l crest line 92. The pair of cre~t line~ aJe di.sposed on a ca~non di~m~ter B. The taper surfac~ 69 guide each of the retaini.ng noses 50, 50a t~ the.flank of a becad o~ ~idge 74 against which they bear in hold~g rela~ion~hip.
Figure 12 shows a cap 20 w~ th a bl~de head Z~ wtlich has lateral m~unting anms 26a for a p;voting head. Thc cap 2~ has in it6 interior 40 fou~ retaining nose~ 5~, ~0~, as well as a stepped in~ernal annul3r collar 86 o~` a widLh q, whic~ i.s delimited upwardly ~y an ~nnular rib B8 and downwc~rdly by an inc~in~d ~mllll~r 6tep 90.
In the ombodi~ent ~hown in l~ u~ 13 and 14, the inclined annulor 6tep i~ the ~nderneath surface of a ret~ining rib 52 which i~
6haped out o~ the cap 22b and above whi.ch the cap in~ide dLameter dl is shorter than the lowcr i.nside di~meter d bcneath the retaining rib 52.
It extend~ at ~ small 6pacing b from ~ radial fl~p p~r~ion 54 of a 25 thickness c, whiCh .is fom~d Oll the i.nside surface 4]. of the cap and lies on a common diameter with a ~c~wld radial flap poItlon 54. A
retaining portion 56 Or rectangular cros~-section proje~t~ ~ro~ the radial flap portion 54 in paralld reJ.ati.onship with the axis. ~he retaining portion 56 ~ arranged both at ~ ~p~cing f f D the in~ide 3~ surface 41 of the ~ap and also at a ~l~ller spacing fJ from the inside edge 55 of the radi~l flap portic)n S4.

'94 06~14 11:53 2; 07~3 637538 11WR TURNER ~9 21259~5 R

~ s60ciat~d With those tW~ peg-like ~e~aining projection~ 56 of the C~p 22b, in the slid~1g g~ide ring 70b w~lich is fixed at the cartridge 6i~e, a~e twn rccesses 60 of corresponding cross:section, ~t the sane ~adia]. s~cing k: the reccsses 60 are Also dispoxed ~t a 8pacing f~ ~rcr. the central recesG 71 of the s)id.in~ guide rin~ 70b and at a spa~ing L relativc to the perip}leral 6urf~ce 62 of a projectin~
r.adial rib 6~ of the ring 70b: 1he dian~ter of the projecting radial ~ib 64 co ,c8ponds to the di~l~t:er dl of the ~pper cap portion.
~xtending at ~ rad~al sidc of the l~ceG5 ~0 of rectang~lar cr~s-section is a limb 74b which sticks up from the ring surface 7~b andwh08e height ~ apprvxin~ely oorr.e~sponds to the height sl (l mm) of the radial rib 64.
Each ~f the limbs ~q i5 disp]aced in para]].el relationshlp by hAlf the width of itG recess 60 fran its centre which is detenmined by the diameter. In additior1, as shown in Figure 16, the limbs 74 ~re di~posed m the dircct.ion of rotation o~ Lhe cap 22b ~s limiting nean~
for the travel of th~ ret~ining portion ~6 at thc l~ngitudinal slde o~
the ~eCess, which i~ e therefran.
~isposed ~t the other lol1y~t~inal 6idc of the rece6s i~ a knob ~0 75 which sti.cks up from the ring 70b a11d against whi.ch the retainlng portion 56 a~ibly 6trike~ durîng it~ :r.o~ry mov3nent and over whlch it must ~e moved to go in~o th~ ~oam p~sition.
In ~'ig~re 16 there ~re tw~ pairs of recesses 60 in order to simplify a8sembly of the ring 70b, th~t is to say matching of the ~5 di~meter 1' to the markin~ ~ which in thi~ case is in the for~ of an arrowhead and which indicat:es thc lw~tion at which the cap 2~b ~oves dcwnw~rdly into the f~m pO~itiOI1 aLter the rétaining portions 56 have audibly ~tJ~ck ag~inst thc limbs 74b.
A6 ~hown in Figurc ~U and the foll~win4 Figures, dispo~ed in the cap interi.or 40 0l1 the l~ngitudil1al axi.s A is a funnel-like rece~s 43 which tapers inward].y in opposite relationship to the actua~ion direc~ion x an~ which the axial p~ss~ye 44 of thc cap 22 opens.

'94 a6~14 11:54 2; ~703 637538 MWR TURNER 10 2125~$t~

Tcnminating beneath the rece~s 43 is an ~xial flow pass~ge 61 of a cap in~ert 62 of a height e of about Z0 mm with a part-spherical ~pper end and a lower annular recess 63 around a ~entral projcction~64 through which pas6es the axial ll~w passage 61 and who~e ~xial ~ength i8 ~horter 5 than the ~eight t o~ an outer annular edge 65 of the ~ap in6ert 62 fr~
whiCh a pair of retaini.ng no~es 66 pr~ject downwardly on a diameter.
ln the transportation position the retaining no6cs 66 rest-on the 8urfaoe 71 of a sli.ding gu.ide riny 70 whioh surrowld~ the valve 18 and its valve tu~e 16 and which i~ c.~nnected to thc ~h~ving foam c~rtrldge 10 (Figure~ 20 and ~J). Thc ri.ng 70 is provid~d on a diameter g o~ ln thi~ case 18 ~m with two axi~-parallel ~lots 72 of a width i of about 3 mm, each of which i~ adjoin~d b~ a rcspeCt.ive shoulder 73. I~ the helgh~
m of the r.ing 70 i~ for cxanple 5 mm, then the spacing b of the surfaee of the 8ho~1der 73 ~rom th~ ring ~urface 71 i~ for example 1 ~m, with a maxim~n periphcr.al length y of thc surf~ce of ~le shoulder 73 of 5 ~m.
During transportation t~lereLorc in this ca~e ~lso the ret~inin~
noses 66 r~st on the ring ~urLace 6J and can be moved m to t~he actuation po6ition by n~tating the cap ~2 (clockwise direction in Fig~re 21) on to the ~houldcr ~urface 7:~. Then, ~rnm that actuation po~ition, the .-20 retaining nose~ 66 ar.e lowero~ i.n~o thc ~lot~ 72 to giv~ the fo~m :~
po~ition. ~n th~t po~it.ion thc v.~lve tubc 16 is pressed downwardl~ and opens the w~y l`or thc fo.~m to pass ~ut of the interior of the oontainer, the foam pa~sing through the passages 6J, 44 and 46 to Lhe m~uth cpening 47 ~nd thus, pa~si.ng throu~h 1he neck '~4, is6uing fl~fn the rearward neck ~5 sur~aoe 25.

Claims (15)

1. A razor device, in particular a disposable razor, having a handle-like foam container and a cap which is releasable therefrom and which is formed by means of a neck on a blade head and which covers over a foam outlet valve, which is surrounded by a sliding guide ring, of the foam container, and is mounted movably relative to same into a foam position, wherein associated with a valve tube of the outlet valve of the foam container is a passage in a central projection of the cap, which communicates with a mouth opening provided at the back face of the cap or the neck, characterised in that disposed in the cap (22) is an insert (62) with an axial flow passage (61) and a central projection (64) which is near the container and through which the axial flow passage passes, wherein the insert has an outer annular edge (65) from which two retaining noses (66) project in parallel relationship with the axis, which retaining noses can be lowered into slots (72) in the sliding guide ring (70) and thus into the foam position.

2. A device as set forth in claim 1 characterised in that the surface (71) of the sliding guide ring (70) defines a transportation position of the retaining noses (66) and a respective shoulder surface (73) between said ring surface and said slot (72) defines a readiness position.

3. A razor device, in particular a disposable razor, having a handle-like foam container and a cap which is releasable therefrom and which is formed by means of a neck on a blade head and which covers over a foam outlet valve, which is surrounded by a sliding guide ring, of the foam container, and is mounted movably relative to same into a foam position, wherein associated with a valve tube of the outlet valve of the container is a passage in a central projection of the cap, which communicates with a mouth opening provided at the back face of the cap or the neck, characterised in that in the cap (22) at least two retaining noses (50, 50a, 50b) are disposed as guide portions on both sides of the central projection (42) in approximately radially oppositely disposed relationship and can each be lowered into a respective slot (72) in the guide ring (70), wherein each slot (72) is separated by means of a radial bead (74) from the guide surface (68) of the guide ring (70).

4. A razor device, in particular a disposable razor, having a handle-like foam container and a cap which is releasable therefrom and which is formed by means of a neck on a blade head and which covers over a foam outlet valve, which is surrounded by a sliding guide ring, of the foam container and is movable relative thereto from a readiness position into a foam position, wherein associated with a valve tube of said outlet valve is a passage disposed in a central projection of the cap which communicates with a mouth opening provided at the back face of the cap or the neck, characterised in that in the cap (22b) at least two retaining noses (56) are disposed as guide portions on both sides of the central 1 projection (42) in approximately radially oppositely disposed relationship, which retaining noses project peg-like at a spacing (f) relative to the inside surface (41) of the cap from radial flap portions (54) formed thereon, in parallel relationship with the axis, and can each be lowered into a respective recess (60) in the guide ring (70b), the recesses being of corresponding cross-section and being closed towards the edge, wherein associated with each recess (60) at one radial side is an abutment limb (74b) which sticks up from the surface (78b) of the guide ring, wherein in front of same the retaining noses (56) can be lowered into the recesses (60) to produce the foam position.

5. A device as set forth in claim 4 d characterised in that two retaining noses (56) lie on a common diameter (D).

6. A device as set forth in claim 3 characterised in that two retaining noses (50, 50a; 50b) are disposed on a common diameter (D).

7. A device as set forth in claim 3 or claim 6 characterised in that the guide surfaces (68) for each retaining nose (50, 50a, 50b) are provided with a retaining slot (84) for fixing the retaining nose in a shaving position.

8. A device as set forth in claim 3 or claim 7 characterised in that the retaining slot (84) is delimited by a threshold means (82) which is formed out of the guide surface (68), and a step front face (76).

9. A device as set forth in claim 3 or claim 6 characterised in that two radial beads (74) flank the slot (72) and at least one taper face (69) with an inclined surface extends from one bead of the one slot to one bead of the other slot, wherein possibly an upwardly inclined taper face (69) extends from each of the two beads (74) and both taper faces form a radial crest line (92) and/or a plurality of crest lines are disposed on a common diameter (B).

10. A device as set forth in at least one of claims 3 or 6 through 9 characterised in that the retaining noses (50, 50a, 50b) are reduced in cross-section towards their free edges (51).

11. A device as set forth in one of claims 3 through 10 characterised in that the height of the bead (74) and/or the threshold means (82) corresponds to the spacing (n) of the guide surface (68) from the ring surface (78).

12. A device as set forth in one of claims 1 through 11 characterised by a ratio of the spacing (n, b) of the guide surface (68) or the shoulder surface (73) from the surface (78) of the ring (70) to the spacing (m) thereof to the lowest point of the slot (72) of 1:5 and/or by a ratio of the arcuate length of the guide surface (68) to the arcuate length of the ring surface (78) disposed in front thereof of 1:1 or 4:1.

13. A device as set forth in claim 4 or claim 5 characterised in that an annular radial rib (64) projects beyond the peripheral surface of the guide ring (70b), the diameter of the annular radial rib corresponding approximately to the inside diameter (dl) of the upper cap portion which has the radial flap portions (54) and which is separated by a retaining rib (52) that projects towards the axis, from a sleeve-shaped lower cap portion of larger diameter (d), wherein possibly the height (sl) of the radial rib (64) approximately corresponds to a fifth of the height (m) of the ring (70b).

14. A device as set forth in claim 4 or claim 13 characterised in that the height (s) of the abutment limb (74b) approximately corresponds to the height (sl) of the radial rib (64), wherein possibly the abutment limb (74b) and/or the knob (75) are/is displaced parallel by half the width (p) of the recesses (60) out of their common diameter (E).

15. A device as set forth in claim 4 or claim 14 characterised in that at least one knob (75) disposed opposite the abutment limb (74b) on the other longitudinal side of the recess (60) wherein possibly the abutment limb (74b) and/or the knob (75) are/is displaced parallel by half the width (p) of the recesses (60) out of their common diameter (E).