CA1264266A - Inline poppet valve - Google Patents
Inline poppet valveInfo
- Publication number
- CA1264266A CA1264266A CA000496318A CA496318A CA1264266A CA 1264266 A CA1264266 A CA 1264266A CA 000496318 A CA000496318 A CA 000496318A CA 496318 A CA496318 A CA 496318A CA 1264266 A CA1264266 A CA 1264266A
- Authority
- CA
- Canada
- Prior art keywords
- poppet valve
- valve seat
- housing
- set forth
- poppet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
- F16K11/044—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with movable valve members positioned between valve seats
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Multiple-Way Valves (AREA)
- Lift Valve (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
An improved multi-position, multi-way valve assembly is disclosed herein which employs a plurality of poppet valve elements mounted on a single shaft for simultaneous operation, and a plurality of fixed and movable valve seats. The relative surface areas against which a pressurized fluid acts is controlled at least in part by a non-symmetrical poppet valve member construction. The poppet valve members each include a pair of opposing annular sealing surfaces of different diameters to define different surface areas.
An improved multi-position, multi-way valve assembly is disclosed herein which employs a plurality of poppet valve elements mounted on a single shaft for simultaneous operation, and a plurality of fixed and movable valve seats. The relative surface areas against which a pressurized fluid acts is controlled at least in part by a non-symmetrical poppet valve member construction. The poppet valve members each include a pair of opposing annular sealing surfaces of different diameters to define different surface areas.
Description
~2~66 The present invention relates generally to valve assemblies and more particularly to multi-position, multi-way valve assemblies utilizing a plurality of poppet type valve members mounted on a single actuating shaft.
This invention relates to the subject matter of copending Canadian Patent Application Serial NoO 473,921, filed February ~, 1985.
Heretofore it has been extremely difficult and costly to utilize poppet type valve members in multi-position, multi-way valve assemblies. One of the primary reasons for ~his difficulty resides in the fact that such valves typically provide a plurality of valve members or elements operated by a single actuating shaft. Because in poppet valves the valve member moves generally perpendicularly to the valve seat, it is necessary to position the respective valve seat5 within the valve assembly so as to assure a substantially simultaneous secure fluid-tight sealing engagement of all of the valve members therewith. This has required that exceedingly tight tolerances be adhered to which is not only very difficult in volume production but also is very costly.
It is also very desirable with such multi-position, multi-way valves to design the valve so that it is stable or self~sustaining in the various positions thus eliminating the need to apply a continuous acttlating force to maintain it in position.
26~
STATEMENT OF INV~`~TION
According to the present invention there i3 provided an inline poppet valve assembly which has a housing with a first valve seating surface and a second seating surface provided therein. A poppet valve member is secured to an actuator within the housing, the poppet valve member having first and second sealing surfaces, the first sealing surface being formed to close the first valve seating surface in response to the articulation of the actuater in one direction, and the second seating surface being formed to close the second valve seating æurface in response to the articulation of the actuator in the opposite direction. The first and second seating surfaces each define a predetermined surface area against which a pressurized fluid in the housing will apply an axially directed force, the predetermined surface area defined by one of the sealing surfaces being greater than the other of the sealing surfaces.
The present invention therefore provides a net pressure created force which is operable to maintain the valve assembly in either of its two positions. This is accomplished by selectively controlling the relative surface areas against which the pressurized fluid being controlled by the valve acts so as to thereby create a net pressure imbalance acting in a direction to hold the valve in the desired position. Thus in the present invention, the only actuating force required is that necessary to shift the valve assembly from one po~ition to the other and no external sustaining force is required to maintain it in that position.
In accordance with one feature of the disclosed embodiment of the invention, the relative surface areas against which the pressurized fluid acts i5 controlled at least in part by a non-symmetrical poppet valve member construction. Specifically, the poppet valve member is provided with first and second sealing surfaces which each define different predetermined surface areas against which the pressurized fluid in the bore of the housing will apply an axially directed force. In one embodiment according to the present invention, these sealing surfaces each comprise a continuous annular rib of elastomeric material. These annular ribs are disposed on opposite sides of the poppet valve member, and the diameter of one of the annular ribs is greater than the diameter of the other annular rib.
Additional advantages and features of the present invention will become apparent from the subsequent description and the appended claims taken in conjunction with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a section view of an embodiment of a two position, four way valve assembly in accordance with the present invention.
Figure 2 is an enlarged section view of one of ~264266 the poppet ~alve members shown in Figure 1 as viewed from line 2--2 of Figure 3.
Figure 3 is a plan view of the poppet valve member shown in Figure 4.
Figures 4 and 5 are planard side views of the washer-shaped core of the poppe~ valve member shown in Figure 4.
Figure 6 is an enlarged section view of one of the fixed valve seats shown in Figure 1.
Figure 7 is an enlarged section view of one of the movable valve seats shown in Figure 1.
- Figure 8 is a plan view of the movable valve seat shown in Figure 7.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring now to Figure 1, a valve assembly 200 in accordance with an embodiment of the present invention is ~hown. The valve assembly 200 is a two position four way valve. However, it will be appreciated from the description below that the principles of the present invention may also be used with other types of valves~
such as a two position two way valve. The valve assembly 200 generally comprises a housing 202, a first fixed valve seat member 204, a second fixed valve seat member 206, a first movable valve seat member 208, a second movable i2~ 2~i6 valve f~at ~er 210, n fir~t ~?o~et v~lve me~er 212, n ~e~orx~ E~t valve m~er 214, nnd ~n nctuator 216.
qbe ~ing 202 i~ pfclvided w~th n bore 218, ~ic~ enerally ~i~Fna~ ~y the re~erenc~ nu~ral 218. A~ ~n in P~gure 1, the di~æter of the b~re 218 ~6 sui~hly contalred to co~or~ to tl~e ~h~ o~
~he val~ s~at m~er~, ~8 ~U ~s to p~oYide ~propriate p~t~s for 1uid flow. ~e ~using 202 ~ al~o for~d with a ~nlet openir~ o~ port 220, a fi~it outlet ~ort æ2, a ~eaond outlet port 224, ~ first ~h~ t port 2~6, and a ~e4~1 exha~st port 228.
- ~ree *~er~i nre al~o provi~ed wit~in the ~3ir~g 202. ~e t c~er 230 is ye~erally di~ een the p~ lve ~er~
This invention relates to the subject matter of copending Canadian Patent Application Serial NoO 473,921, filed February ~, 1985.
Heretofore it has been extremely difficult and costly to utilize poppet type valve members in multi-position, multi-way valve assemblies. One of the primary reasons for ~his difficulty resides in the fact that such valves typically provide a plurality of valve members or elements operated by a single actuating shaft. Because in poppet valves the valve member moves generally perpendicularly to the valve seat, it is necessary to position the respective valve seat5 within the valve assembly so as to assure a substantially simultaneous secure fluid-tight sealing engagement of all of the valve members therewith. This has required that exceedingly tight tolerances be adhered to which is not only very difficult in volume production but also is very costly.
It is also very desirable with such multi-position, multi-way valves to design the valve so that it is stable or self~sustaining in the various positions thus eliminating the need to apply a continuous acttlating force to maintain it in position.
26~
STATEMENT OF INV~`~TION
According to the present invention there i3 provided an inline poppet valve assembly which has a housing with a first valve seating surface and a second seating surface provided therein. A poppet valve member is secured to an actuator within the housing, the poppet valve member having first and second sealing surfaces, the first sealing surface being formed to close the first valve seating surface in response to the articulation of the actuater in one direction, and the second seating surface being formed to close the second valve seating æurface in response to the articulation of the actuator in the opposite direction. The first and second seating surfaces each define a predetermined surface area against which a pressurized fluid in the housing will apply an axially directed force, the predetermined surface area defined by one of the sealing surfaces being greater than the other of the sealing surfaces.
The present invention therefore provides a net pressure created force which is operable to maintain the valve assembly in either of its two positions. This is accomplished by selectively controlling the relative surface areas against which the pressurized fluid being controlled by the valve acts so as to thereby create a net pressure imbalance acting in a direction to hold the valve in the desired position. Thus in the present invention, the only actuating force required is that necessary to shift the valve assembly from one po~ition to the other and no external sustaining force is required to maintain it in that position.
In accordance with one feature of the disclosed embodiment of the invention, the relative surface areas against which the pressurized fluid acts i5 controlled at least in part by a non-symmetrical poppet valve member construction. Specifically, the poppet valve member is provided with first and second sealing surfaces which each define different predetermined surface areas against which the pressurized fluid in the bore of the housing will apply an axially directed force. In one embodiment according to the present invention, these sealing surfaces each comprise a continuous annular rib of elastomeric material. These annular ribs are disposed on opposite sides of the poppet valve member, and the diameter of one of the annular ribs is greater than the diameter of the other annular rib.
Additional advantages and features of the present invention will become apparent from the subsequent description and the appended claims taken in conjunction with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a section view of an embodiment of a two position, four way valve assembly in accordance with the present invention.
Figure 2 is an enlarged section view of one of ~264266 the poppet ~alve members shown in Figure 1 as viewed from line 2--2 of Figure 3.
Figure 3 is a plan view of the poppet valve member shown in Figure 4.
Figures 4 and 5 are planard side views of the washer-shaped core of the poppe~ valve member shown in Figure 4.
Figure 6 is an enlarged section view of one of the fixed valve seats shown in Figure 1.
Figure 7 is an enlarged section view of one of the movable valve seats shown in Figure 1.
- Figure 8 is a plan view of the movable valve seat shown in Figure 7.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring now to Figure 1, a valve assembly 200 in accordance with an embodiment of the present invention is ~hown. The valve assembly 200 is a two position four way valve. However, it will be appreciated from the description below that the principles of the present invention may also be used with other types of valves~
such as a two position two way valve. The valve assembly 200 generally comprises a housing 202, a first fixed valve seat member 204, a second fixed valve seat member 206, a first movable valve seat member 208, a second movable i2~ 2~i6 valve f~at ~er 210, n fir~t ~?o~et v~lve me~er 212, n ~e~orx~ E~t valve m~er 214, nnd ~n nctuator 216.
qbe ~ing 202 i~ pfclvided w~th n bore 218, ~ic~ enerally ~i~Fna~ ~y the re~erenc~ nu~ral 218. A~ ~n in P~gure 1, the di~æter of the b~re 218 ~6 sui~hly contalred to co~or~ to tl~e ~h~ o~
~he val~ s~at m~er~, ~8 ~U ~s to p~oYide ~propriate p~t~s for 1uid flow. ~e ~using 202 ~ al~o for~d with a ~nlet openir~ o~ port 220, a fi~it outlet ~ort æ2, a ~eaond outlet port 224, ~ first ~h~ t port 2~6, and a ~e4~1 exha~st port 228.
- ~ree *~er~i nre al~o provi~ed wit~in the ~3ir~g 202. ~e t c~er 230 is ye~erally di~ een the p~ lve ~er~
2:L2 z~nd 214.. lSe ~ nd c~er 232 asi generally disposed be~ ~e pQ}~t v21~21~ ~ ~ pi~ton general_y dei6ignat~ e r~erenc~
~ral 23~. ~e third c~ er 236 i~ gener~illy di~ ~xtwe~ t~e poE~ Y~ 4 aIId a pi~iton gen~ally ~e~ignatff~ e re~e~rence m2meral 238..
~ e ~!IC~UatOl: 216 inclu~i6i a oentr21 iE;h~t or roa 24~ u~?on ~c~
the E~t valve ~beri6 212 and 214 are ~ted. . ~Ihe ~ uator 216 al~
11&8 a E;pool 242 ~ic~ ~?aratefii the pc~et valYe ~nOEbe~i 2~ 2sn~3 214.
A~raingly~ t~e poppe~ vi~lve ~er ~ ~ e~ t}~ie ~ool nd t~e ~ 234~ z~nd the pC~et ~ e ~er 214 ~; ~E~
- - ~ei~ ~e ~pool 242 ~nd the p~on 238. q51e c~ination ~nd ~a~ o~
t~e spoo:L 242 and t~e ~ii6itCQ5 234 ~d 238 ~180 asEii~'c in ke~ tl~e po~t valYe mel~er5 ;1';> 1~X3 214 in a pO5itiOII generally perp~diQllar to the ~ft 24~
~ e ~ uat4r 21S ~l~o includes a ~ir clf s~oer~; 244 ~nd 246 ~ ~ort ~e cup sha~ eal m~beri~i 248 ~d 250. I~cknt~ 252 2snd 254 are isecured ~ener~l~ at the ends of ~e ~ 240 to re~ai~ t~e aboYe d~icr~}ed ca~?onen~ in pois~tion on the fi~ft 240. As wil~ iated e i~Xilled i31 the art, one or b~t ~ the erx3~ of the ~ 240 ~y . ~
~6a~616 L~e conn~c-t~d to ~ solenc~d valve 'co control the ~ on of t~e actuator 21.6 in ~n ~c~Dl. directlDn~ Al~ematively" one or ~re of the ~u~ing er~ 25~ ~1258 n~f be for~:d to prwide ~ corY3uit th~h ~ic~
id p~e~;sure m~y be ~pli~d to c~e an Dxial articul~on o~ t~e ~ uator 216. A~ o ~bo~n in Figure 1, it ~ be desir~ble ln ce ~ ain circ ~ t2ncefi to provide a piLton con~tructlon in which one o~ the pistons i6 smaller than tbe other. In thi~ aituation, a ~ylindrical ~leeve 26~ i6 ~nte~po~ea ~et~een the ~mzller ~etuLn) piston 23~ and the fixed yalye ~eat Dx~d~er 206.
I~rning no~ to a de~cript-on c~ ~ke EopQet ~zlYe ~bers 212 auul ~14, it ~uld fir~t be note~ that ~he~e popEet Yalve ~R~beLs ~re o i~n~ical cc~nst~ucti~n. ~o~rdingly, ~y one ~ ~ po~e v~l~
pc~æt va~ve ~er 21~ i8 sbown ~n Eigure 2, A plan ~ies~ of the ~et valve ~ er 212 ia al~o s ~dn in Figure ~ e Eo ~ et valve ~ er 2:L2 generally ~ i~es. a ~Q~hex-~hqped letal core 262 an~ an ela~tomeric sh2ath 264 ~tich generally suLround~ the c~re 2~2. Figures 4 and ~ . ~bow t~o plan views of the ~tal core 262. ~ ~heath 264 is for2ed ~ith a fir~t ~eal~ng ~ur~a oe 266 a~d a ~ec~nd se~ g ~uIface 268. Each o~ ~ese E2alin~ sur~oes 266-268 compri~e ~ ccn~,Lnuous ~ rib ~av~ng 21 senerally semi-circular cross ~ec*iRn. As ~est Eeen in Figur~ 2, the ~2aling ~lrfaces 266-26~ are ~ Rn oE~o~ite EideS o tbe Eoppet valve ~x~d}er 212. ~dditicn~lly, it is ~p~rtant to note that ~be dia~eter ~R~ of the sealing surfa oe 266 L5 greater tb~n ~b2 di~metex ~L~ of the sealing ~urfaoe 268. As will be seen fram the ce~cxlp~ion belo~ th~-s ~ metrical constructlon of the ~eal:ing ~urfac~s 266-268 p~ovides a ~irable pressu~e i~alance ~thin the va!ve a~ly 200. I~ s~uld be ~preciated that the E~rtiallar po~t ~ e oonstrud:ion ~ in ~igure 2 ~; ~ot int~rlded to l;mit ~he F~e~t ~nvelltiQn, ~nd ~hat oth~
no~r:metric~l ~;e~ling ~3urfaoe constructio.~3 prwidi.~g the afor~ntione~
i26~66 p~ 3Ure i~31~ plcyed in the ~o~iate tlpplic~tion.
Referring both to ~?igures 1 ~nd 6, lt will be f~een tbat the f~;ced y ~ ea'c ~er~; 2D4 and 206 ~ave a generally ~ylindrical f~ e~
the ca~e of the poppet valve m~er~ e fixed valve ~e~t ~er~ 204 and 2û6 are iderltic~l, nnd therefore only ~he fi~ed valve ~eat ~ 206 ~
be de~cribe~, ~he s~n~l fix~d valve seat ~er ~06 i8 for~d ~> pcovide a ger~erally r~3ially ~ct~ling valve ~eat ~urfaoe 270. ~e val~e ~eat J3Urface 270 will be closed ~y the firfit rea~g ~urface 266 ' of the po~e ~alYe ~r 214. ~e fi~ed ~lve seat ~er 206 is ~180 pr~ded ~ith a piurali~y of 0~8 272 to ~e~nLt fluid c~nitation between the ~nd ort 224 2$3d t~e ~o~ e~l~3t port 228 ~ the ~e ~seat 27û ~;
open. ~e fi~ed valve ~eat m~er 206 i~ o ~o~d with ~n ~ially e~tendiDq ~ oe 274 ~ic~ engage~ e coaxially ~s~d f;leeve ~60. It ~21d be ~ ~t t~ sur~ac~e will be ~ e a~pE~æd ~eal ~r 2~8 ~n connection with t}~e fir~;t fix~ ~al~ seat ~er 204.
~ui~le z~nu~ el2~to~ric ~eal rings 276 and 278 are ~lso iri~:lu~d to ,ride a ~luid-'dght ~eal be~ t}le b~ 204 and the fixe~ valve ~at ~ber :!û6. Ad~itic~nally, ~t ~uld be noted $hat t~e :Eised valYe ~eat 3~er ;~O{i i~; ~orned W:~t31 a pluralit~y o circ~ferentially ~Eaoea y ~r~ es ~E~ at o~e end t~hereof.
R~erring to Figur~ 1, i ~nd 8, the ~vable valve seat ~eB 208 ~1 ~10 ~11 be de~cr~ E~e ~ Linoe the ~le ~eat ~r~; ~re ide~ti~l in cc~nstn~ction, only the ~ Ye se~t ~ex 21~ ed. ~e ~rable val~ eat ~er 210 includes ~ ~lir~ri~. portion 282 l~;hic~ i; fon~d with an ol*~ly fa~:ing ~lar grooy~ 284. An a~nular Eealir~g ring 2~ ~o~ed in th2 qroo~e 2B4 to pr~i~e a flui~ti~ht ~3eal beb~ the D~able ~alve ~eat ~er 210 2~nd the ~ ;~ng 202. :I:t ~ould be noted t~at the etterior 13urfaoe 2B~ the ~vable val~e Beat ~er 210 ~3 sized r~atiYe to tbe b~re 218 o the ~ir~ 204 to p~rmit the valve ~eat ma~er t~ Bl~de axially ith respect ~264266 to the l~ous~ng The IT.ovable valve ~eat ~ er 210 ~1E;O. inClU(~5 ~
annular flange portion 2~8 ~ch extends out~lrdly in ~ r~i~l~ direction frcqn olle end of the ~ylindrical portion 282. ~e fl~nge portion 288 pr~.~i~es a val~e ~eat surface 289 w~ich can be closed ~y ~e s~lla s~ling surfaoe 2~8' of the poppet valve m~er 214. q~e flan~e portion 288 is f~or~ea w~t}l a plurality of circu~erentially spaced out~iardly opening cavities 290. The flange portion 288 of the ~vahle valve seat ~er 210 ac~ as a stop to limit the axial ~v~nent of the valve seat:
~er. In on~ direction the flange portion 288 ~nll abut ~he housing 202~ ~ile in ~he other direction the flange portion will a~ut the fixed val~ ~;eat ~er 206. It should be notcd 'chat w~ e flange por~ion 288 of the n~ablf~ at D~er 210 engages ffie fi~c~ v~lve seat m~r~er 20~, ~e c~rlities 2~0 of the fixed valve sea~ ~rber and the ca lties 2gO
o~ ~e ~able v lve - ~at m~ber c~ine fo Ee~mit ~luid ~cation he ~a3~er 236 and the ~ce l~ets~e~ the housir~g 202 and the flange por'cion 288, and permit fluid c~catiorl be'cween l:he c~a~r~er 236 and the secon~. ou~let port 224.
~ e ~eration c~ the valve as~ly ~0~ ~11 nc~7 be descr~ed, In ~e l?osition of t~e actuator 216 ~ iII Eigl~re 3, ~e first ~;ealing surface 266 ~ the po~et valve ~er 212 ~2ill close the ~.~ ~;eat sur~ace o~ 1~e i~st ~Lxed valve seat m~rber 204, ~hile S~e seao~ seal~ng sur~aoe 268' o~ the po~et valve ~r~er 214 ~ill ~os~ the ~lve seat f;urface 289 of~ ~e ~eoond ~wvable Yalve seat m~er 21~. As will ~e ~ . .. . . . . . .
evi~nt from the di~cussions of ~he previous ~bodilænts, the ~al~e sea~
~u~face o the n~va~le valve ~at m~rber 210 will c~ose at or before the closin~ oi~ the valve seat surface of the fix~d valve ~eat n~;~er 204, ~li5 feature i~i due in part to the di~sions of ~he fixed va~ e ~eat:
n~ers 20g ana 206 ~ic~ cause a imaller distance "~ ~:>etwe~ ~e pop~
valve mffr~ers 212-214 and the n~ le valve saat m~ers 20~210 ~n the di5tance ~ n between the poppet valve ~ers and the fix~a v21v~ seat 26i6 ~r~.
~ en the ~ at ~urfaoe of the first ff~ced valve seat ~er 204 i~ closed, fluid ~tion i~ pennitted between the ~nlet port 220 ~nd the fl~;t outlet port 222 through the ~svities 2~0 ~nd 290. E'luid c~ni~tion will i~o be E~e~nted bet~en the first outlet port 222 and t~e first ~cha~t port ~26. ~e closure of the valve seat nu~f~:e 283 of t~e se~nd m~vable valve seat me*er 210 will permit ~luid cc~nicat~on betwe~ t~e s~on~l outlet port 224 and the second e~ st port 228. Fluid cc~uni~tion will ol~o be Erev~te~ betwe~ the lnlet port 220 and the secon~ outlet p~rt 224.
~ hen t~e a~Ltor 216 is artia~lat~ to the rlght, it sbould ~irst be ~oted t~at ~e se~nd mrltable ~alve E~eat ~10 w~ll be dr~m ~lon~
w~th t~e ~et valve ~er 214 un~l t~e flange p~on 288 engage~ the second ~i~ed valve ~eat ~er 206. q~e sec~nd poppet valv~ ~er 214 ~ill a)nt~n~ to ~ve to t~e right'until it~ urface 266' clo~;
the val~e seating ~urface Z~0 of the ~ea)nd fixed val~ eat ~er 206~
~gain, at or prior to the closing of thi6 val~e ~eat ~urfaoe, the ~ec~nd ~ealing ~urfaoe 268 o the p~ppet valve ~;ber 212 will c1~2 the valve ng surfaoe ~ t~e first ~vable ~alve ~t n~e~ 208. ~ clo~3ure of tlle Yalve seatinq ~urfaoe of ~e fir~t ~vable vrilve ~eat ~er 208 ~Lll peD~it fluid cc~ni~tion be~ the fir~3t outlet port: 222 ~nd tl~e ~rst ~t port 226. Fluid oa~ni~tio~l ~ill ~so ~e pc~ted ~et~ 2e ~nlet port 220 ~ 2e fir~t outlet port 222. ~e clo~ure a~
~e valve ~eating ~uJ face 270 will pe~Dit ~luid cr~nica~ia~ bet~een t~e ~nlet port 220 and the second outlet p0rt 224. Pluid oc~ni~tion ~ill also be E~evented between the ~e~nd outlet port 224 ~ e 13eaDnd e~hau~t port 228.
It w~ll be a~eciat~ fr~ the ~rego~ descrlE~on that the first and se~nd sealing ~urfaoes ~66-268 a~ the poppet v~Lve m~ers 212-~14 each de~ine a Er~letermirled surfaoe nrea ~ t whic~ a .
.' 9 ~i6~
pressurized fluid in the first chamber 230 of the housing 202 will apply an axially directed force. Since the diameter "K" of the first sealing surface 266 is greater than the diameter "L" of the second sealing surface 268, the predetermined surface area defined by the first sealing surface will be greater than that defined by the second sealing surface. Thus, with the valve assembly 200 in the position shown in Figure 1, the fluid pressure within the first chamber 230 will exert a greater force on the poppet valve member 212 than on the poppet valve member 214. Hence, there will be a net force acting in a left axial direction to maintain the poppet valve member 212 in the position shown. Similarly, when the actuat~r 216 is shifted to the right as shown by t~e phantom lines, the pressure exerted on the poppet valve member 214 will be greater than that exerted on the poppet valve member 212. Thus, the resulting pressure imbalance will maintain the valve assembly 200 stable in either of the two positions without the need for the application of an ongoing external force.
It should also be noted that the principles of the present invention embodied ln the valve assembly 200 may be employed in other types of valve assemblies having more than two poppet valve members or even one poppet valve member. Thus, a poppet valve assembly according to the present invention may include only a single poppet valve member, a single fixed valve seat member and a single movable valve seat member. It should also be ~2~ 6 appreciated that some of the principles of construction employed in the previous two embodiments may be employed in a valve assembly of the type shown in Figure 1.
Thus, there is provided by the present invention a valve assembly which employ a plurality of poppet valves mounted on a single actuating shaft and designed to a seat on a combination of fixed and movable valve seats whereby manufacturing tolerances may be easily accommodated.
While it will be apparent that th~ preferred embodiments of the invention disclosed are well calculated to provide the advantages and features above stated, it will be appreciated that the invention is susceptible to modification, variation and change without departing from the proper scope or fair meaning of the subjoined claims.
~ral 23~. ~e third c~ er 236 i~ gener~illy di~ ~xtwe~ t~e poE~ Y~ 4 aIId a pi~iton gen~ally ~e~ignatff~ e re~e~rence m2meral 238..
~ e ~!IC~UatOl: 216 inclu~i6i a oentr21 iE;h~t or roa 24~ u~?on ~c~
the E~t valve ~beri6 212 and 214 are ~ted. . ~Ihe ~ uator 216 al~
11&8 a E;pool 242 ~ic~ ~?aratefii the pc~et valYe ~nOEbe~i 2~ 2sn~3 214.
A~raingly~ t~e poppe~ vi~lve ~er ~ ~ e~ t}~ie ~ool nd t~e ~ 234~ z~nd the pC~et ~ e ~er 214 ~; ~E~
- - ~ei~ ~e ~pool 242 ~nd the p~on 238. q51e c~ination ~nd ~a~ o~
t~e spoo:L 242 and t~e ~ii6itCQ5 234 ~d 238 ~180 asEii~'c in ke~ tl~e po~t valYe mel~er5 ;1';> 1~X3 214 in a pO5itiOII generally perp~diQllar to the ~ft 24~
~ e ~ uat4r 21S ~l~o includes a ~ir clf s~oer~; 244 ~nd 246 ~ ~ort ~e cup sha~ eal m~beri~i 248 ~d 250. I~cknt~ 252 2snd 254 are isecured ~ener~l~ at the ends of ~e ~ 240 to re~ai~ t~e aboYe d~icr~}ed ca~?onen~ in pois~tion on the fi~ft 240. As wil~ iated e i~Xilled i31 the art, one or b~t ~ the erx3~ of the ~ 240 ~y . ~
~6a~616 L~e conn~c-t~d to ~ solenc~d valve 'co control the ~ on of t~e actuator 21.6 in ~n ~c~Dl. directlDn~ Al~ematively" one or ~re of the ~u~ing er~ 25~ ~1258 n~f be for~:d to prwide ~ corY3uit th~h ~ic~
id p~e~;sure m~y be ~pli~d to c~e an Dxial articul~on o~ t~e ~ uator 216. A~ o ~bo~n in Figure 1, it ~ be desir~ble ln ce ~ ain circ ~ t2ncefi to provide a piLton con~tructlon in which one o~ the pistons i6 smaller than tbe other. In thi~ aituation, a ~ylindrical ~leeve 26~ i6 ~nte~po~ea ~et~een the ~mzller ~etuLn) piston 23~ and the fixed yalye ~eat Dx~d~er 206.
I~rning no~ to a de~cript-on c~ ~ke EopQet ~zlYe ~bers 212 auul ~14, it ~uld fir~t be note~ that ~he~e popEet Yalve ~R~beLs ~re o i~n~ical cc~nst~ucti~n. ~o~rdingly, ~y one ~ ~ po~e v~l~
pc~æt va~ve ~er 21~ i8 sbown ~n Eigure 2, A plan ~ies~ of the ~et valve ~ er 212 ia al~o s ~dn in Figure ~ e Eo ~ et valve ~ er 2:L2 generally ~ i~es. a ~Q~hex-~hqped letal core 262 an~ an ela~tomeric sh2ath 264 ~tich generally suLround~ the c~re 2~2. Figures 4 and ~ . ~bow t~o plan views of the ~tal core 262. ~ ~heath 264 is for2ed ~ith a fir~t ~eal~ng ~ur~a oe 266 a~d a ~ec~nd se~ g ~uIface 268. Each o~ ~ese E2alin~ sur~oes 266-268 compri~e ~ ccn~,Lnuous ~ rib ~av~ng 21 senerally semi-circular cross ~ec*iRn. As ~est Eeen in Figur~ 2, the ~2aling ~lrfaces 266-26~ are ~ Rn oE~o~ite EideS o tbe Eoppet valve ~x~d}er 212. ~dditicn~lly, it is ~p~rtant to note that ~be dia~eter ~R~ of the sealing surfa oe 266 L5 greater tb~n ~b2 di~metex ~L~ of the sealing ~urfaoe 268. As will be seen fram the ce~cxlp~ion belo~ th~-s ~ metrical constructlon of the ~eal:ing ~urfac~s 266-268 p~ovides a ~irable pressu~e i~alance ~thin the va!ve a~ly 200. I~ s~uld be ~preciated that the E~rtiallar po~t ~ e oonstrud:ion ~ in ~igure 2 ~; ~ot int~rlded to l;mit ~he F~e~t ~nvelltiQn, ~nd ~hat oth~
no~r:metric~l ~;e~ling ~3urfaoe constructio.~3 prwidi.~g the afor~ntione~
i26~66 p~ 3Ure i~31~ plcyed in the ~o~iate tlpplic~tion.
Referring both to ~?igures 1 ~nd 6, lt will be f~een tbat the f~;ced y ~ ea'c ~er~; 2D4 and 206 ~ave a generally ~ylindrical f~ e~
the ca~e of the poppet valve m~er~ e fixed valve ~e~t ~er~ 204 and 2û6 are iderltic~l, nnd therefore only ~he fi~ed valve ~eat ~ 206 ~
be de~cribe~, ~he s~n~l fix~d valve seat ~er ~06 i8 for~d ~> pcovide a ger~erally r~3ially ~ct~ling valve ~eat ~urfaoe 270. ~e val~e ~eat J3Urface 270 will be closed ~y the firfit rea~g ~urface 266 ' of the po~e ~alYe ~r 214. ~e fi~ed ~lve seat ~er 206 is ~180 pr~ded ~ith a piurali~y of 0~8 272 to ~e~nLt fluid c~nitation between the ~nd ort 224 2$3d t~e ~o~ e~l~3t port 228 ~ the ~e ~seat 27û ~;
open. ~e fi~ed valve ~eat m~er 206 i~ o ~o~d with ~n ~ially e~tendiDq ~ oe 274 ~ic~ engage~ e coaxially ~s~d f;leeve ~60. It ~21d be ~ ~t t~ sur~ac~e will be ~ e a~pE~æd ~eal ~r 2~8 ~n connection with t}~e fir~;t fix~ ~al~ seat ~er 204.
~ui~le z~nu~ el2~to~ric ~eal rings 276 and 278 are ~lso iri~:lu~d to ,ride a ~luid-'dght ~eal be~ t}le b~ 204 and the fixe~ valve ~at ~ber :!û6. Ad~itic~nally, ~t ~uld be noted $hat t~e :Eised valYe ~eat 3~er ;~O{i i~; ~orned W:~t31 a pluralit~y o circ~ferentially ~Eaoea y ~r~ es ~E~ at o~e end t~hereof.
R~erring to Figur~ 1, i ~nd 8, the ~vable valve seat ~eB 208 ~1 ~10 ~11 be de~cr~ E~e ~ Linoe the ~le ~eat ~r~; ~re ide~ti~l in cc~nstn~ction, only the ~ Ye se~t ~ex 21~ ed. ~e ~rable val~ eat ~er 210 includes ~ ~lir~ri~. portion 282 l~;hic~ i; fon~d with an ol*~ly fa~:ing ~lar grooy~ 284. An a~nular Eealir~g ring 2~ ~o~ed in th2 qroo~e 2B4 to pr~i~e a flui~ti~ht ~3eal beb~ the D~able ~alve ~eat ~er 210 2~nd the ~ ;~ng 202. :I:t ~ould be noted t~at the etterior 13urfaoe 2B~ the ~vable val~e Beat ~er 210 ~3 sized r~atiYe to tbe b~re 218 o the ~ir~ 204 to p~rmit the valve ~eat ma~er t~ Bl~de axially ith respect ~264266 to the l~ous~ng The IT.ovable valve ~eat ~ er 210 ~1E;O. inClU(~5 ~
annular flange portion 2~8 ~ch extends out~lrdly in ~ r~i~l~ direction frcqn olle end of the ~ylindrical portion 282. ~e fl~nge portion 288 pr~.~i~es a val~e ~eat surface 289 w~ich can be closed ~y ~e s~lla s~ling surfaoe 2~8' of the poppet valve m~er 214. q~e flan~e portion 288 is f~or~ea w~t}l a plurality of circu~erentially spaced out~iardly opening cavities 290. The flange portion 288 of the ~vahle valve seat ~er 210 ac~ as a stop to limit the axial ~v~nent of the valve seat:
~er. In on~ direction the flange portion 288 ~nll abut ~he housing 202~ ~ile in ~he other direction the flange portion will a~ut the fixed val~ ~;eat ~er 206. It should be notcd 'chat w~ e flange por~ion 288 of the n~ablf~ at D~er 210 engages ffie fi~c~ v~lve seat m~r~er 20~, ~e c~rlities 2~0 of the fixed valve sea~ ~rber and the ca lties 2gO
o~ ~e ~able v lve - ~at m~ber c~ine fo Ee~mit ~luid ~cation he ~a3~er 236 and the ~ce l~ets~e~ the housir~g 202 and the flange por'cion 288, and permit fluid c~catiorl be'cween l:he c~a~r~er 236 and the secon~. ou~let port 224.
~ e ~eration c~ the valve as~ly ~0~ ~11 nc~7 be descr~ed, In ~e l?osition of t~e actuator 216 ~ iII Eigl~re 3, ~e first ~;ealing surface 266 ~ the po~et valve ~er 212 ~2ill close the ~.~ ~;eat sur~ace o~ 1~e i~st ~Lxed valve seat m~rber 204, ~hile S~e seao~ seal~ng sur~aoe 268' o~ the po~et valve ~r~er 214 ~ill ~os~ the ~lve seat f;urface 289 of~ ~e ~eoond ~wvable Yalve seat m~er 21~. As will ~e ~ . .. . . . . . .
evi~nt from the di~cussions of ~he previous ~bodilænts, the ~al~e sea~
~u~face o the n~va~le valve ~at m~rber 210 will c~ose at or before the closin~ oi~ the valve seat surface of the fix~d valve ~eat n~;~er 204, ~li5 feature i~i due in part to the di~sions of ~he fixed va~ e ~eat:
n~ers 20g ana 206 ~ic~ cause a imaller distance "~ ~:>etwe~ ~e pop~
valve mffr~ers 212-214 and the n~ le valve saat m~ers 20~210 ~n the di5tance ~ n between the poppet valve ~ers and the fix~a v21v~ seat 26i6 ~r~.
~ en the ~ at ~urfaoe of the first ff~ced valve seat ~er 204 i~ closed, fluid ~tion i~ pennitted between the ~nlet port 220 ~nd the fl~;t outlet port 222 through the ~svities 2~0 ~nd 290. E'luid c~ni~tion will i~o be E~e~nted bet~en the first outlet port 222 and t~e first ~cha~t port ~26. ~e closure of the valve seat nu~f~:e 283 of t~e se~nd m~vable valve seat me*er 210 will permit ~luid cc~nicat~on betwe~ t~e s~on~l outlet port 224 and the second e~ st port 228. Fluid cc~uni~tion will ol~o be Erev~te~ betwe~ the lnlet port 220 and the secon~ outlet p~rt 224.
~ hen t~e a~Ltor 216 is artia~lat~ to the rlght, it sbould ~irst be ~oted t~at ~e se~nd mrltable ~alve E~eat ~10 w~ll be dr~m ~lon~
w~th t~e ~et valve ~er 214 un~l t~e flange p~on 288 engage~ the second ~i~ed valve ~eat ~er 206. q~e sec~nd poppet valv~ ~er 214 ~ill a)nt~n~ to ~ve to t~e right'until it~ urface 266' clo~;
the val~e seating ~urface Z~0 of the ~ea)nd fixed val~ eat ~er 206~
~gain, at or prior to the closing of thi6 val~e ~eat ~urfaoe, the ~ec~nd ~ealing ~urfaoe 268 o the p~ppet valve ~;ber 212 will c1~2 the valve ng surfaoe ~ t~e first ~vable ~alve ~t n~e~ 208. ~ clo~3ure of tlle Yalve seatinq ~urfaoe of ~e fir~t ~vable vrilve ~eat ~er 208 ~Lll peD~it fluid cc~ni~tion be~ the fir~3t outlet port: 222 ~nd tl~e ~rst ~t port 226. Fluid oa~ni~tio~l ~ill ~so ~e pc~ted ~et~ 2e ~nlet port 220 ~ 2e fir~t outlet port 222. ~e clo~ure a~
~e valve ~eating ~uJ face 270 will pe~Dit ~luid cr~nica~ia~ bet~een t~e ~nlet port 220 and the second outlet p0rt 224. Pluid oc~ni~tion ~ill also be E~evented between the ~e~nd outlet port 224 ~ e 13eaDnd e~hau~t port 228.
It w~ll be a~eciat~ fr~ the ~rego~ descrlE~on that the first and se~nd sealing ~urfaoes ~66-268 a~ the poppet v~Lve m~ers 212-~14 each de~ine a Er~letermirled surfaoe nrea ~ t whic~ a .
.' 9 ~i6~
pressurized fluid in the first chamber 230 of the housing 202 will apply an axially directed force. Since the diameter "K" of the first sealing surface 266 is greater than the diameter "L" of the second sealing surface 268, the predetermined surface area defined by the first sealing surface will be greater than that defined by the second sealing surface. Thus, with the valve assembly 200 in the position shown in Figure 1, the fluid pressure within the first chamber 230 will exert a greater force on the poppet valve member 212 than on the poppet valve member 214. Hence, there will be a net force acting in a left axial direction to maintain the poppet valve member 212 in the position shown. Similarly, when the actuat~r 216 is shifted to the right as shown by t~e phantom lines, the pressure exerted on the poppet valve member 214 will be greater than that exerted on the poppet valve member 212. Thus, the resulting pressure imbalance will maintain the valve assembly 200 stable in either of the two positions without the need for the application of an ongoing external force.
It should also be noted that the principles of the present invention embodied ln the valve assembly 200 may be employed in other types of valve assemblies having more than two poppet valve members or even one poppet valve member. Thus, a poppet valve assembly according to the present invention may include only a single poppet valve member, a single fixed valve seat member and a single movable valve seat member. It should also be ~2~ 6 appreciated that some of the principles of construction employed in the previous two embodiments may be employed in a valve assembly of the type shown in Figure 1.
Thus, there is provided by the present invention a valve assembly which employ a plurality of poppet valves mounted on a single actuating shaft and designed to a seat on a combination of fixed and movable valve seats whereby manufacturing tolerances may be easily accommodated.
While it will be apparent that th~ preferred embodiments of the invention disclosed are well calculated to provide the advantages and features above stated, it will be appreciated that the invention is susceptible to modification, variation and change without departing from the proper scope or fair meaning of the subjoined claims.
Claims (18)
1. An improved inline poppet valve assembly. comprising:
a housing having a first valve seating surface and a second valve seating surface provided therein;
a poppet valve member secured to an actuator within said housing, said poppet valve member having first and second sealing surfaces, said first sealing surface being formed to close said first valve seating surface in response to the articulation of said actuator in one direction, and said second sealing surface being formed to close said second valve seating surface in response to the articulation of said actuator in the opposite direction, said first and second sealing surfaces each defining a predetermined surface area against which a pressurized fluid in said housing will apply an axially directed force, the predetermined surface area defined by one of said sealing surfaces being greater than the other of said sealing surfaces.
a housing having a first valve seating surface and a second valve seating surface provided therein;
a poppet valve member secured to an actuator within said housing, said poppet valve member having first and second sealing surfaces, said first sealing surface being formed to close said first valve seating surface in response to the articulation of said actuator in one direction, and said second sealing surface being formed to close said second valve seating surface in response to the articulation of said actuator in the opposite direction, said first and second sealing surfaces each defining a predetermined surface area against which a pressurized fluid in said housing will apply an axially directed force, the predetermined surface area defined by one of said sealing surfaces being greater than the other of said sealing surfaces.
2. A poppet valve assembly as set forth in Claim 1 wherein the predetermined surface area defined by said first sealing surface is greater than the predetermined surface area defined by said second sealing surface.
3. A poppet valve assembly as set forth in Claim 1 wherein said first and second sealing surfaces are disposed on opposite sides of said poppet valve member.
4. A poppet valve assembly as set forth in Claim 1 wherein said first and second sealing surfaces each generally comprise a continuous annular rib of elastomeric material.
5. A poppet valve assembly as set forth in Claim 4 wherein the diameter of one of said annular ribs is greater than the other of said annular ribs.
6. A poppet valve assembly as set forth in Claim 5 wherein both of said annular ribs have a generally semi-circular cross section.
7. A poppet valve assembly as set forth in Claim 1 wherein said poppet valve member comprises a metalic washer-shaped core and an elastomeric sheath covering at least both sides of said core. said sheath being formed with a continuous annular rib on opposite sides of said core, the diameter of one of said annular ribs being greater than the other of said annular ribs.
8. A poppet valve assembly as set forth in Claim 7 wherein said sheath generally surrounds said core.
9. A poppet valve assembly as set forth in Claim 1 wherein said actuator includes a shaft and a pair of spools concentrically disposed on said shaft, said poppet valve member being interposed between said spools.
10. An improved inline poppet valve assembly, comprising:
a housing;
a fixed valve seat and a movable valve seat provided in said housing;
a poppet valve member secured to an actuator within said housing, said poppet valve member having first and second sealing surfaces, said first sealing surface being formed to close said fixed valve seat in response to the articulation of said actuator in one direction, and said second sealing surface being formed to close said movable valve seat in response to the articulation of said actuator in the opposite direction, said first and second sealing surfaces each defining a predetermined surface area against which a pressurized fluid in said housing will apply an axially directed force, the predetermined surface area defined by one of said sealing surfaces being greater than the other of said sealing surfaces.
a housing;
a fixed valve seat and a movable valve seat provided in said housing;
a poppet valve member secured to an actuator within said housing, said poppet valve member having first and second sealing surfaces, said first sealing surface being formed to close said fixed valve seat in response to the articulation of said actuator in one direction, and said second sealing surface being formed to close said movable valve seat in response to the articulation of said actuator in the opposite direction, said first and second sealing surfaces each defining a predetermined surface area against which a pressurized fluid in said housing will apply an axially directed force, the predetermined surface area defined by one of said sealing surfaces being greater than the other of said sealing surfaces.
11. A poppet valve assembly as set forth in Claim 10 wherein said movable valve seat is axially movable within said housing in response to the articulation of said actuator.
12. A poppet valve assembly as set forth in Claim 11 wherein said movable valve seat includes a cylindrical portion formed with an outwardly facing annular groove, an annular sealing element disposed in said groove for providing a seal between said movable valve seat and said housing, and an annular flange portion extending outwardly in generally radial direction from one end of said cylindrical portion, said flange portion being formed with a plurality of circumferentially spaced outwardly opening cavities.
13. A poppet valve assembly as set forth in Claim 12 wherein said flange portion of said movable valve seat cooperates with one end of said first valve seat to limit axial movement of said movable valve seat in one direction.
14. A poppet valve assembly as set forth in Claim 13 wherein said one end of said fixed valve seat is formed with a plurality of circumferentially spaced axially extending cavities.
15. A poppet valve assembly as set forth in claim 10 wherein said housing includes first, second and third ports which are disposed in said housing relative to said poppet valve member such that:
the closure of said fixed valve seat permits fluid communication between said first and second ports, while preventing fluid communication between said second and third ports, and the closure of said movable valve seat permits fluid communication between said second and third ports, which preventing fluid communication between said first port and said second port.
the closure of said fixed valve seat permits fluid communication between said first and second ports, while preventing fluid communication between said second and third ports, and the closure of said movable valve seat permits fluid communication between said second and third ports, which preventing fluid communication between said first port and said second port.
16. An improved inline poppet valve assembly, comprising:
a housing having an axial bore;
first and second fixed valve seats disposed in the bore of said housing;
first and second movable valve seats disposed in the bore of said housing; and first and second poppet valve members secured to an actuator that is axially movable within the bore of said housing, each of said poppet valve members having first and second sealing surfaces;
said first sealing surface of said first poppet valve member being formed to close said first fixed valve seat and said second sealing surface of said second poppet valve member being formed to close said second movable valve seat in response to the articulation of said actuator in one direction;
said second sealing surface of said first poppet valve member being formed to close said first movable valve seat and said first sealing surface of said second poppet valve member being formed to close said second fixed valve seat in response to the articulation of said actuator in the opposite direction;
said first sealing surfaces of said first and second poppet valve members each defining surface areas of a first predetermined size, and said second sealing surfaces of said first and second poppet valve members each defining surface areas of a second predetermined size, said first predetermined surface areas being greater than said second predetermined surface areas.
a housing having an axial bore;
first and second fixed valve seats disposed in the bore of said housing;
first and second movable valve seats disposed in the bore of said housing; and first and second poppet valve members secured to an actuator that is axially movable within the bore of said housing, each of said poppet valve members having first and second sealing surfaces;
said first sealing surface of said first poppet valve member being formed to close said first fixed valve seat and said second sealing surface of said second poppet valve member being formed to close said second movable valve seat in response to the articulation of said actuator in one direction;
said second sealing surface of said first poppet valve member being formed to close said first movable valve seat and said first sealing surface of said second poppet valve member being formed to close said second fixed valve seat in response to the articulation of said actuator in the opposite direction;
said first sealing surfaces of said first and second poppet valve members each defining surface areas of a first predetermined size, and said second sealing surfaces of said first and second poppet valve members each defining surface areas of a second predetermined size, said first predetermined surface areas being greater than said second predetermined surface areas.
17. A poppet valve assembly as set forth in Claim 16 wherein said housing is formed with an inlet port, first and second outlet ports, and first and second exhaust ports, said ports being disposed in relation to said poppet valve members such that:
the closure of said first fixed valve seat permits fluid communication between said inlet port and said first outlet port while preventing fluid communication between said first outlet port and said first exhaust port, the closure of said second movable valve seat permits fluid communication between said second outlet port and said second exhaust port, while preventing fluid communication between said inlet port and said second outlet port, the closure of said first movable valve seat permits fluid communication between said first outlet port and said first exhaust port, while preventing fluid communication between said inlet port and said first outlet port, and the closure of said second fixed valve seat permits fluid communication between said inlet port and said second outlet port, while preventing fluid communication between said second outlet port and said second exhaust port.
the closure of said first fixed valve seat permits fluid communication between said inlet port and said first outlet port while preventing fluid communication between said first outlet port and said first exhaust port, the closure of said second movable valve seat permits fluid communication between said second outlet port and said second exhaust port, while preventing fluid communication between said inlet port and said second outlet port, the closure of said first movable valve seat permits fluid communication between said first outlet port and said first exhaust port, while preventing fluid communication between said inlet port and said first outlet port, and the closure of said second fixed valve seat permits fluid communication between said inlet port and said second outlet port, while preventing fluid communication between said second outlet port and said second exhaust port.
18. A poppet valve assembly as set forth in Claim 16 or 17 wherein each of said sealing surfaces generally comprises a continuous annular rib of elastomeric material.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US68575584A | 1984-12-24 | 1984-12-24 | |
| US685,755 | 1984-12-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1264266A true CA1264266A (en) | 1990-01-09 |
Family
ID=24753547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000496318A Expired - Fee Related CA1264266A (en) | 1984-12-24 | 1985-11-27 | Inline poppet valve |
Country Status (13)
| Country | Link |
|---|---|
| JP (1) | JPH0756349B2 (en) |
| CN (1) | CN85109004A (en) |
| AU (1) | AU5150385A (en) |
| BR (1) | BR8506460A (en) |
| CA (1) | CA1264266A (en) |
| DD (1) | DD245704A5 (en) |
| DE (2) | DE3542062C2 (en) |
| ES (1) | ES8705101A1 (en) |
| FR (1) | FR2575263B1 (en) |
| GB (1) | GB2168789B (en) |
| IT (1) | IT1200872B (en) |
| SE (1) | SE8506038L (en) |
| ZA (2) | ZA859722B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5558125A (en) * | 1994-09-06 | 1996-09-24 | Ingersoll-Rand Company | Air winch control valve |
| DE19909918A1 (en) * | 1999-03-06 | 2000-09-14 | Bosch Gmbh Robert | Pilot-operated directional valve |
| JP3774334B2 (en) * | 1999-06-17 | 2006-05-10 | 株式会社テージーケー | Four-way selector valve |
| CN103388600A (en) * | 2013-08-02 | 2013-11-13 | 徐州重型机械有限公司 | Aloft work engineering machine and servo hydraulic system thereof |
| RU2549756C1 (en) * | 2014-05-20 | 2015-04-27 | Открытое акционерное общество "Конструкторское бюро химавтоматики" | Valve |
| CN104482252B (en) * | 2015-01-06 | 2017-04-05 | 胡甜甜 | A kind of integrated reversing valve |
| CN104776079B (en) * | 2015-03-30 | 2017-03-22 | 济南夫驰科技有限公司 | Multi-connected integrated assembling valve seat |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1028841B (en) * | 1955-05-07 | 1958-04-24 | Erich Herion | Multi-way switch valve with special pressure relief |
| US3087760A (en) * | 1960-07-14 | 1963-04-30 | Bendix Westinghouse Automotive | Multiple brake system |
| JPS441198Y1 (en) * | 1965-08-10 | 1969-01-17 | ||
| GB1224873A (en) * | 1966-12-20 | 1971-03-10 | Martonair Ltd | Fluid operable valve |
| FR1530861A (en) * | 1967-07-07 | 1968-06-28 | Knorr Bremse Gmbh | Dispensing valve |
| US3587156A (en) * | 1967-09-19 | 1971-06-28 | Systems Design Co Inc | Method of manufacturing a pressurized fluid control valve |
| US3848637A (en) * | 1973-05-07 | 1974-11-19 | Ite Imperial Corp | High speed four-way valve |
| JPS50115627U (en) * | 1974-03-04 | 1975-09-20 | ||
| IT1169423B (en) * | 1983-05-26 | 1987-05-27 | Luciano Migliori | DISTRIBUTOR VALVE FOR PNEUMATIC CIRCUITS |
| DE3322912A1 (en) * | 1983-06-25 | 1985-01-03 | Wabco Steuerungstechnik GmbH & Co, 3000 Hannover | Multi-way seat valve |
| GB2154707B (en) * | 1984-02-22 | 1988-09-14 | Ross Operating Valve Co | Inline poppet valve |
-
1985
- 1985-11-19 GB GB08528424A patent/GB2168789B/en not_active Expired
- 1985-11-27 CA CA000496318A patent/CA1264266A/en not_active Expired - Fee Related
- 1985-11-28 DE DE3542062A patent/DE3542062C2/en not_active Expired - Fee Related
- 1985-11-28 DE DE8533506U patent/DE8533506U1/en not_active Expired
- 1985-12-12 IT IT23182/85A patent/IT1200872B/en active
- 1985-12-13 CN CN198585109004A patent/CN85109004A/en active Pending
- 1985-12-17 AU AU51503/85A patent/AU5150385A/en not_active Abandoned
- 1985-12-18 FR FR858518772A patent/FR2575263B1/en not_active Expired
- 1985-12-19 ZA ZA859722A patent/ZA859722B/en unknown
- 1985-12-19 ZA ZA856751A patent/ZA876751B/en unknown
- 1985-12-20 DD DD85284924A patent/DD245704A5/en not_active IP Right Cessation
- 1985-12-20 SE SE8506038A patent/SE8506038L/en not_active Application Discontinuation
- 1985-12-23 ES ES550325A patent/ES8705101A1/en not_active Expired
- 1985-12-23 BR BR8506460A patent/BR8506460A/en unknown
- 1985-12-24 JP JP60291786A patent/JPH0756349B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FR2575263B1 (en) | 1989-02-10 |
| FR2575263A1 (en) | 1986-06-27 |
| ZA876751B (en) | 1987-11-25 |
| IT8523182A0 (en) | 1985-12-12 |
| GB2168789A (en) | 1986-06-25 |
| GB8528424D0 (en) | 1985-12-24 |
| AU5150385A (en) | 1986-07-03 |
| GB2168789B (en) | 1988-08-17 |
| DD245704A5 (en) | 1987-05-13 |
| JPH0756349B2 (en) | 1995-06-14 |
| BR8506460A (en) | 1986-09-02 |
| ZA859722B (en) | 1987-10-28 |
| DE3542062A1 (en) | 1986-07-03 |
| SE8506038D0 (en) | 1985-12-20 |
| JPS61157880A (en) | 1986-07-17 |
| DE8533506U1 (en) | 1988-07-07 |
| ES8705101A1 (en) | 1987-04-16 |
| CN85109004A (en) | 1986-11-05 |
| ES550325A0 (en) | 1987-04-16 |
| SE8506038L (en) | 1986-06-25 |
| IT1200872B (en) | 1989-01-27 |
| DE3542062C2 (en) | 1997-02-27 |
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