Fixedseatingarrangementhavingaswingarmshrou.docx
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Fixedseatingarrangementhavingaswingarmshrou.docx
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Fixedseatingarrangementhavingaswingarmshrou
Fixedseatingarrangementhavingaswingarmshroudwithaslidingshieldmember
BACKGROUNDANDSUMMARYOFTHEINVENTION
Thisinventionrelatestofixedseatingarrangements,andmoreparticularlytoaswingarmshroudwithaslidingshieldmemberforrestrictingaccesstopinchpointsonaswingarmassemblyofafixedseatingarrangement.
Fixedseatingarrangementsincorporatingcantileveredswingarmsareawellknownalternativetotraditionalseatingarrangements.Fixedseatingarrangementsutilizingswingarmassembliesarecommonlyfoundinlecturehalls,classrooms,laboratories,andrestaurants.ExamplesofsuchfixedseatingarrangementsareillustratedinProtzmanetal.,U.S.Pat.No.3,535,999,Bareckietal.,U.S.Pat.No.3,486,790,Ostertag,U.S.Pat.No.3,709,555,andAllen,U.S.Pat.No.5,683,065,thedisclosuresofwhichareherebyincorporatedbyreference.
Eachofthenotedpatentsdisclosescommondesignfeaturesincorporatedintofixedseatingarrangementsutilizingswingarmassemblies.Manyoftheseseatingarrangementstypicallyincludeanelongatedtableorcountersupportedbyanupwardlyextendingpedestal.Thepedestalispermanentlysecuredtothefloorviaabasemember.Attachedtothepedestalnearthebasememberistypicallyatleastonelaterallyextendingchairsupportarm.Thesupportarmisattachedtothepedestal,forexample,byatubularsupportsleeve.Apivotalconnectionisinterposedbetweenthesleeveandthechairsupportarm.Thepivotalconnectionallowsthechairtobepivotedonthecantileveredsupportarmwithinapredeterminedrangebetweenasittingpositionnearthetableandanentryorexitpositionawayfromthetable.Thepivotalconnection,however,whilebeneficialinprovidingeaseofentryandexitfromachair,createspotentiallyhazardouspinchpoints.
Inresponsetothisproblem,thepriorarthasdemonstratednumerouspossiblesolutions.Forexample,Allen,U.S.Pat.No.5,683,065,disclosesajournalboxandcoverconfiguredtoshieldportionsoftheconnectionofthecantileveredsupportarmandthepedestal.Thejournalbox,however,doesnotcompletelyrestrictaccesstothepinchpointandislimitedtosupportarmsthathangfromapedestal.Furthermore,thejournalboxdoesnotprovideaneasymeanstoremovetheboxifmaintenanceontheassemblyisrequired.
Protzman,U.S.Pat.No.3,535,000,Bareckietal.,U.S.Pat.No.3,486,790andothersdonotprovideanyadditionalshieldmembers.Instead,theseassemblieshaveattemptedtoalleviatetheproblembyprovidingatightfitwithinthejointstructureformedbetweentheannularhousingandthesupportflanges.Thisapproachisunsatisfactorybecause,evenwhenthefixedseatingarrangementisinitiallyinstalledandthejointistightlyarranged,therestillexistthinpinchpointscapableofsnagginglooseclothingorpaper.Astheassemblyundergoesadditionaluseinthelecturehallorotherarea,thematerialsbegintowear,thejointsloosenandthepinchpointsbecomemoredefined,therebycreatingahazardforfingersaswellasclothing,booksandpapers.Furthermore,becausethearearemainsexposed,itbecomespronetoaccumulationofdust,dirtandgreaseandothercontaminants.
Itcanthusbeappreciatedthatthereisaneedforanimprovedprotectivememberforthepivotalconnectionofcantileveredswingarmseatingarrangements.Inviewoftheforegoing,itisoneobjecttoprovideashroudthatrestrictsaccesstopinchpointsassociatedwithswingarmassemblieswhilemaintainingadesiredmaximumoperativerangeandavoidingtheproblemsassociatedwithpriorartfixedseatingarrangements.
Itisanotherobjectofthesubjectinventiontoprovideashieldassemblythatmaybeutilizedinconnectionwithanyvarietyoffixedseatingcomponentsandswingarmarrangements,andisnotlimitedtoanypreferredswingarmarrangement.
Astillfurtherobjectoftheinventionistoprovideaprotectiveshroudwithaslidingshieldmemberwhichdoesnotrequiresignificantmodificationstoexistingfixedseatingarrangements.Yetanotherobjectoftheinventionistoprovidesuchashroudwhichiseffectivebutisrelativelyinexpensivetomanufacture.
Consistentwiththeforegoingobjects,thepresentinventioncontemplatesaprotectiveshroud,ashieldassemblywithaslidingshieldmemberconfiguredtorestrictaccesstothepinchpointsinaswingarmassembly,andamethodofrestrictingaccesstopinchpointsinaswingarmassembly,whicharedisclosedinsuitabledetailtoenableoneofordinaryskillinthearttomakeandusetheinvention.
Inaccordancewithoneaspectoftheinvention,ashieldassemblyincludesahousingunitdefiningabasereceivingregion.Thehousingincludesanopeninginanupperwall,whichisconfiguredtoallowatablesupportpedestaltoextendtherethrough.Thehousingfurtherincludesasidewallopeningconfiguredtoallowlateralmovementofapivotablechairswingarm,andashieldmemberhavingedgeareasthatextendbeyondtheedgesofthesidewallopening.Thatis,theshieldmemberislongerandwiderthanthesidewallopening.Theshieldmemberisslidablyconnectedtothehousing,andisconfiguredtofitaroundthepivotableswingarm,torestrictaccessintothebasereceivingregionofthehousing.Theshieldassemblyincludesupperandlowerinteriorgrooveslocatedneartheupperandloweredges,respectively,ofthehousingsidewallopening,andwhichslidablyretainandreceivetheshieldmember.Thehousingmaybeformedoftwohalvesconfiguredtoattachtooneanotherviaasnapfitarrangementincludingopposedattachmenttabsandtabreceivingrecesses.Theshieldmemberincludesacircularopeningconfiguredtoreceivethepivotableswingarmtherethrough,andaslotextendingfromtheopeningtoallowtheshieldmembertobepositionedonthepivotableswingarm.
Inaccordancewithanotheraspectoftheinvention,amethodofrestrictingaccesstothepinchpointsofaswingarmassemblyincludesthestepsofprovidingashieldmemberforafixedseatingassemblythatincludesahousingunitdefiningatablebasereceivingregion,andanopeninginanupperwallofthehousingunitconfiguredtoallowatablesupportpedestaltoextendtherethrough.Thehousingincludesasidewallopeningconfiguredtoallowlateralmovementofapivotablechairsupportarmconnectedtothepedestal,andashieldmemberthatisbothlongerandwiderthanthesidewallopening,andwhichisconfiguredtofitaroundthepivotablechairsupportarm.Themethodfurtherincludesthestepsofplacingtheshieldmemberoverthechairsupportarmandplacingthehousingaroundatablebase,suchthattheshieldmemberengagesthehousing.
Inaccordancewithanotheraspectoftheinvention,aprotectiveshroudforaswingarmassemblyincludesahousingwithatleastonesideopeningforaccommodatingpivotablemovementofaswingarm.Thehousingisconfiguredtobeplacedovertheswingarmadjacentitsinnerend,andincludesaslidablyattachedshieldmemberconfiguredtofitaroundtheswingarm.Theshieldmemberisconfiguredtomovewithinthehousingwhentheswingarmismovedrelativetothehousing,andrestrictsaccessintothehousinginteriorregionfromthesideopening.
These,andother,aspectsandobjectsofthepresentinventionwillbebetterappreciatedandunderstoodwhenconsideredinconjunctionwiththefollowingdescriptionandtheaccompanyingdrawings.Itshouldbeunderstood,however,thatthefollowingdescription,whileindicatingapreferredembodimentofthepresentinvention,isgivenbywayofillustrationandnotoflimitation.Manychangesandmodificationsmaybemadewithinthescopeofthepresentinventionwithoutdepartingfromthespiritthereof,andtheinventionincludesallsuchchangesandmodifications.
BRIEFDESCRIPTIONOFTHEDRAWINGS
Thedrawingsillustratethebestmodepresentlycontemplatedforcarryingouttheinvention.Inthedrawings:
FIG.1isanisometricviewofafixedseatingarrangementincorporatingtheswingarmshroudconstructedaccordingtothepresentinvention;
FIG.2isanexplodedisometricviewillustratingthecomponentsoftheswingarmshroudincorporatedintheseatingarrangementillustratedinFIG.1;
FIG.3isapartialsectionviewoftheshroudtakenalongline3-3ofFIG.2;
FIG.4isapartialsectionviewoftheshroudtakenalongline4-4ofFIG.3;
FIG.5isapartialsectionviewoftheshroudtakenalongline5-5ofFIG.4;
FIG.6isanenlargedpartialsectionviewoftheofaportionoftheshroudillustratedinFIG.3,showingtheswingarmandshieldinafirstposition;and
FIG.7isanenlargedpartialsectionviewsimilartoFIG.6,showingtheswingarmandshieldinasecondposition
DETAILEDDESCRIPTIONOFTHEINVENTION
Indescribingthepreferredembodimentoftheinventionwhichasillustratedinthedrawings,specificterminologywillberesortedtoforthesakeofclarity.However,itisnotintendedthattheinventionbelimitedtothespecifictermssoselectedanditistobeunderstoodthateachspecifictermincludesalltechnicalequivalentswhichoperateinasimilarmannertoaccomplishasimilarpurpose.Forexample,theword“connected”ortermssimilartheretoareoftenused.Suchtermsarenotlimitedtodirectconnectionbutincludeconnectionthroughotherelementswheresuchconnectionisrecognizedasbeingequivalentbythoseskilledintheart.
ReferringtoFIGS.1and2,afixedseatingarrangement20incorporatingtheinventiveswingarmshroud22ofthepresentinventionisillustrated.Whiletheinventiveaspectsoftheswingarmshroud22areapplicabletoawidevarietyofcantileveredswingarmassemblies,for
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