Detachablechairarm.docx
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Detachablechairarm.docx
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Detachablechairarm
Detachablechairarm
FIELDOFTHEINVENTION
Thepresentinventionrelatesgenerallytochairsand,moreparticularly,tochairshavingadetachablechairarm.
BACKGROUNDOFTHEINVENTION
Chairsmayhavechairarmsandarmrestsinordertoprovideincreasedcomfortandtodecreasefatiguebyprovidingsupportfortheuser'sarmsandlateralsupportforthebody.Insomeinstances,itmaybedesirabletoremovethechairarmfromthechair.However,typicalchairarmsareattachedtothechairusingrelativelycomplexmechanismswhichrequiretoolstoassembleanddisassemble,whichnotonlymakeitdifficultforthetypicalusertoselectivelyremovethechairarmbutalsoincreasetheassemblyandmanufacturingcosts.
OBJECTSANDSUMMARYOFTHEINVENTION
Itisanobjectofthepresentinventiontoprovideanovelchairconstructionbywhichanarmrestmaybeeasilyandquicklyremovedfromorattachedtoachairwithouttheneedfortools.
Itisanotherobjectofthepresentinventiontoprovidealatchmechanismforpermittingthechairarmtobeselectivelyremovedfromorattachedtothechairwhichisreliable,simpleandeasilymanufactured.
Anotherobjectofthepresentinventionistoprovideasymmetricallatchmechanismwhichmaybeinstalledinanyorientation.
Afurtherobjectofthepresentinventionistoprovidearemovablechairarmwhichcanbeadaptedtoexistingchairs.
Thepresentinventionisgenerallydirectedtoachairarmandlatchmechanismwhichhasuniquestructuralfeatureswhichpermitthechairarmtobequicklyandeasilyattachedtoorremovedfromthechairwithouttheneedfortools.Thechaircomprisesamalememberwhichisattachedtoeitherthechairarmoraseatsupportstructureandafemalememberwhichcanbeattachedtotheotherofthechairarmortheseatsupportstructure.Thefemalememberhasaslotforreceivingandholdingthemalemembersothatthechairarmandtheseatsupportstructureareattachedtoeachother.Alatchisresilientlyandflexiblyattachedtothemalememberorthefemalememberforengagingtheotherofthemaleorfemalememberinordertopreventthemalememberfrombeingwithdrawnfromtheslotofthefemalememberuntilthelatchisintentionallydisengagedbytheuser.
Inoneembodiment,thechaircomprisesamountingandlatchmemberwhichisattachedtothechairarmtoformamaleassemblysectionandafemalememberwhichisattachedtobottomoftheseatsupportstructuretoprovideafemalesectionthereon.Thefemalememberhasaslotforreceivingandholdingthemountingmemberandanattachedarmsothatthechairarmandtheseatsupportstructurearefirmlyandpositivelyaffixedtoeachotherinamannerwhichalsoreadilypermitsintentionalremoval.Aresilientlatchisresilientlyandflexiblyjoinedtothemountingmemberforengagingthefemalememberinordertopreventthemalesectionfrombeingwithdrawnfromtheslotofthefemalememberuntilthelatchisdisengaged.Inoneexemplaryembodiment,thelatchisformedbytoesprojectingatbothendsofthemountingmemberforengagingthefemalemembertherebetweenandlockingthemaleandfemalesectionstogether.Thetrailingtoeengagesoneendofthefemalesectiontopreventfurtherinsertionofthemountingsection.Theleadingendofthemountingmembercanberesilientlyflexedinordertopermittheleadingtoetobeinsertedintotheslotandtoresilientlyengagethefemalememberoftheotherendoftheslot.Themountingmembermaybesymmetricaltopermiteitherendtobeinsertedintotheslot.
Theseandotherfeaturesandadvantagesoftheinventionwillbemorereadilyapparentuponreadingthefollowingdescriptionofembodimentsoftheinventionanduponreferencetotheaccompanyingdrawingswherein:
BRIEFDESCRIPTIONOFTHEDRAWINGS
FIG.1isanexplodedperspectiveviewofaportionachairshowingachairseat,onechairarm,andfemaleandmalesectionsofadetachablearmmountingmechanisminaccordancewithapreferredembodimentemployingteachingsofthepresentinvention;
FIG.2isafrontviewofthechairseat,thechairarmandthemountingmechanismofFIG.1inafirst,preparatoryposition;
FIG.3isafrontviewofthechairseatthechairarmandthelatchinanintermediatepositionaftertheinitialinsertionoftheleadingendofthemalesectionintothefemalesection;
FIG.4isafrontviewofthechairseat,thechairarmandthelatchinasecond,assembledpositionforattachingthechairarmandthechair;
FIG.5isanendviewofthefemalememberasinFIG.1,fromtherightendinFIG.7;
FIG.6isatopviewofthefemalememberofFIG.1;
FIG.7isacross-sectionalviewofthefemalememberofFIG.1takenalongline7--7inFIG.6;
FIG.8isatopviewofthelatchmemberofFIG.1;
FIG.9isacross-sectionalviewofthelatchmemberofFIG.1takenalongline9--9inFIG.8;
FIG.10isanendviewofthelatchmemberofFIG.1;
FIG.11isapartialfrontviewofachairseat,chairarmandmountingmechanismofanotherembodimentemployingteachingsofthisinvention,inthefirst,preparatoryposition;
FIG.12isafrontviewofthemechanismofFIG.11inasecond,assembledpositionforattachingthechairarmandthechair;
FIG.13isalowerperspectiveviewofpartofathirdembodimentemployingteachingsoftheinventionshowingafemalememberattachedtothechairseat;
FIG.14isapartialfrontviewofthechairseat,achairarmandthelatchmechanismofFIG.13inafirst,preparatoryposition;
FIG.15isapartialfrontelevationalviewofthemechanismofFIG.13showingthelatchinasecond,assembledpositionforattachingthechairarmandthechair.
FIG.16isaplanviewofachairarmandthelatchmechanismofFIG.13inapreparatoryposition.
Whiletheinventionwillbedescribedanddisclosedinconnectionwithcertainpreferredembodimentsandprocedures,itisnotintendedtolimittheinventiontothosespecificembodiments.Ratheritisintendedtocoverallsuchalternativeembodimentsthatfallwithinthespiritandscopeoftheinvention.
DETAILEDDESCRIPTIONOFTHEPREFERREDEMBODIMENT
ReferringtoFIG.1,thereisshownabottomperspectiveviewofpartofachair10includingachairseat12andchairarm14andoneembodimentofamountingandlatchmechanism18inaccordancewiththepresentinventionwhichpermitsthechairarm14tobeselectivelyattachedtoandremovedfromthechair10.Inordertosimplifythefigures,thechairlegs,thechairback,andtheotherchairarm14havenotbeenshown.Thechairseat12hasagenerallyhorizontaltopsurface12atopermitausertositthereonandabottomsurface12b.Thechairarm14typicallyhasagenerallyverticalsupportbar20andanarmrest16atthetop20aofthesupportbar20.Thelowerendportion20bofthesupportbar20extendsgenerallyhorizontallyandisadaptedtobeattachedtothechair10inordertosupportthearmrest16inthedesiredpositionandorientationwithrespecttotheuser.
Thelatchmechanism18isadaptedtoholdthechairarm14andthearmrest16inadesiredpositionandorientationwithrespecttotheuser.Tothisend,thefemalemember24hasaconfigurationwhichaccommodatestheportionoftheseatsupportassemblytowhichitisaffixedandtoprovidetheslot26attheselectedorientation.Inordertoaccommodatethecurvedbottomsurface12bofthechairseat12,theupperportion30ofthefemalemember24hasacurveduppersurface32adaptedtomaintaintheslot26,andtheportion20bofthechairarm14inagenerallylevelorientation.ReferringtoFIGS.2and5,theslot26hasinletandoutletends26a,26bformedbyopposingtopandbottomwalls26c,26dandopposingsidewalls26e,26f.Theupperportion30ofthefemalemember24mayalsohaveapluralityoftransversereinforcingbars34foradditionalstructuralstrengthandsupportasbestshowninFIGS.5-6.Meansforattachingthefemalemember24tothechair10isprovided.Intheillustratedembodiment,thefemalemember24hasapluralityofholes28sothatthefemalemember24canbeattachedtothechairseat12byscrews,boltsandthelike.Otherattachingmeanswillbeapparenttothoseskilledintheart.
Inordertoattachthechairarm14tothechairseat12,themountingandlatchmember22isadaptedtobejoinedwiththeportion20bofthearmsupportbartoformamalemountingsectionwhichisinsertedintoandlatchedtothefemalemember24.Themember22hasagenerallyflatbase36delimitedbysides38,ends40andabottom44andtopsurface42andofaconfigurationtobeinsertedintotheslot26.Meansforattachingthemember22andthesupportbarportion20bofthechairarm14isprovidedtopreventrelativelateralmovementtherebetween.Intheillustratedembodiment,theattachingmeanscomprisesapluralityofprotuberances46projectingoutwardlyfromthetopsurface42ofmember22andwhichareadaptedtosnuglyengagewithinapluralityofcorrespondingholes48inthechairarm14asshowninFIGS.1-4.Whenthemember22andthesupportbar20areattachedtogether,itispreferredthattheprotuberances46beflushwithorbelowtheoppositesurfaceoftheassembledsupportbar20inordertominimizeobstructionswhenthesupportbar20andthemember22areinsertedintothefemalemember24.Eachprotuberance46mayalsohaveahole46aforpermittingascrewortheliketoaffixthemember22relativetothesupportbar20.Otherattachingmeanswillbeapparenttothoseskilledintheart.Themember22andthechairarm14mayalsobeformedasasingleintegralpiecemadeofmetal,plasticorothersuitablematerial.Itisalsopreferablefora
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