Presented by, Geeva D.K - 13 Ramya M - 37

8/14/2019 Presented by, Geeva D.K - 13 Ramya M - 37

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Presented By,Geeva D.K - 13Ramya M - 37Kabir - 48Nimal Sundar

74


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A chair is a raised surface used to siton, commonly for use by one person.

They have the seat raised above floor

level, supported by four legs The design may be made of porousmaterials, or be drilled with holes for

decoration; a low back or gaps canprovide ventilationA chair for more than one person is acouch, sofa, settee, or a bench


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For many centuries it was an article of state & dignity rather than that of ordinary use

"The chair" is still extensively used asthe emblem of authority in the Houseof Commons in the United Kingdomand Canada, and in many othersettingsNot until 16 th century it becamecommon anywhere


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In ancient Egypt chairs appear to havebeen of great richness and splendourFashioned of ebony and ivory, or of carved and gilded wood, they werecovered with costly materials,magnificent patterns and supported

upon representations of the legs of beasts or the figures of captives The earliest form of greek chair wentback to 5 to 6 centuries BC


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Chinese started the common usage of chairs &12 th century seating on floor was rare in china

Later in Europe, they brought in a changewhere chair ceased to be the privilege of state& became a standard item of furniture

The 20th century saw an increasing use of technology in chair construction like, all-metal

folding chairs, metal-legged chairs, theSlumber Chair, moulded plastic chairs andergonomic chairs


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The present invention generally relatesto furniture and, more particularly, tochairs constructed from blow-molded

plasticOne aspect is a chair that is constructedat least in part from plasticAnother aspect is a chair that isconstructed at least in part from blow-molded plastic


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Advantageously, the blow-molded plasticchairs may be durable, lightweight, easilymanufactured and strong.Hence, the chairs may be rapidly and easilymoved from one location to another

Yet another aspect is a chair that mayinclude a chair seat constructed from blow-molded plastic. The chair seat may includecurved upper and lower surfaces, which mayhelp increase the strength of the chair seatDesirably, the chair seat is sized andconfigured to comfortably support a personsitting in the chair


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A good chair is important because nowadaysmost of us spend of a good portion of everyday working on the chairs, using it for ourwork or entertainment

There are different types of jobs andoccupations out there that involve beingseated for extended periods of timeRight chair results increased comfort and

productivity at the work place and adecreased risk of back painsA chair also has the health benefit of beingan "active sitting" alternative


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Comfortable to sitAdjusting the important features of chairsStable while sittingComfortable armrestsSize flexiblitySwivel easily

Durablityfoldability


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No chair works for every user and situation - Aristotle

Referring to an "ergonomic chair" also distortsthe situation; many or most of these chairsincorporate some features that are generallybetter than most and other features that aregenerally worse.

Ergonomics (also known as Human Factors )

describes information about humans in"working" situations. Anthropometrics deals withinformation about human body size and shape.


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As an item of furniture is rarely used by only oneindividual, most furniture must accommodate thevariations of a wide range of end users.The "average" person is a mythical creature.

When measurements are taken from a targetpopulation for a particular design, a mid-point(termed the 50th "percentile") divides users intotwo groups - one above and one below the"average

dental chairs, class room chairs, auditoriumchairs, meeting chairs, office chairs, computerchairs.


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Seat height adjustability This allows the user to adjust the chair so thathis/her feet are on the floor, or theworksurface or keyboard is at an appropriateheight, or preferably both.

Seat depth adjustability Achieved either by backrest in-out

adjustability or a sliding seat pan , this

changes the front-to-back depth of the seat. Ashorter seat pan is necessary to allow smallpeople to use the chair's backrest, while adeeper one feels more stable to tallerindividuals


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Backrest angle adjustability Backrest angle adjustability allows the chair tosupport different degrees of recline, which inturn transfers some upper-body weight to the

chair backrest and lightens the load on thelower back's intervertebral discs. Armrests These support the arms, reducing the work of the shoulders and possibly the upper arms.Armrests can, however, be used inappropriatelyby inhibiting free motion of the arms duringactivities such as typing


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based on usesbarber's chair bar stool

beach chair patio chair

Based on design Adirondack chair barrel chair bean bag chair


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Based on the materialEames-PlywoodChesterfield-Leather

Bikini chair-Metal , molded plasticInflatable chair-fabricWalnut-savonarola chair


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Wheel chair


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Stacking chairsDentist chair Fighting chair


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Massage chair


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Made up of oakFirst used in august 06 1890Last used in 09 December 2007


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Sweet heart chairShower chairRockerSaddle chair

P R l d Wi h Ch i


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Patents Related With Chairssource: www.freepatentsonline.com

D186658 Folding chairs November, 1959 Spilman3021175 February, 1962 Norquist3094357 Chair June, 1963 Shwayder

3111344 Chair November, 1963 Hoven et al.

3146028 Collapsible seat August, 1964 Grosfillex

3159428 Compactly stackable chair December, 1964 Schier

3275371 September, 1966 Rowland

D214834 Folding chair August, 1969 Moore et al.3466084 September, 1969 Moore et al.

D215836 Chair and seat and back unittherefor

November, 1969 Bell, jr. Et al.

3669496 June, 1972 Chisholm3751109 Method of making a seat shell August, 1973 Dufton

3944280 Stackable chair March, 1976 Keeler

4035019 Armchairs having tubular frames

July, 1977 Gabourie

4057288 Stackable wheeled chair November, 1977 Schwartz et al.

4168669 Adjustable height tray table September, 1979 Arnoff
http://www.freepatentsonline.com/D186658.htmlhttp://www.freepatentsonline.com/3021175.htmlhttp://www.freepatentsonline.com/3094357.htmlhttp://www.freepatentsonline.com/3111344.htmlhttp://www.freepatentsonline.com/3146028.htmlhttp://www.freepatentsonline.com/3159428.htmlhttp://www.freepatentsonline.com/3275371.htmlhttp://www.freepatentsonline.com/D214834.htmlhttp://www.freepatentsonline.com/3466084.htmlhttp://www.freepatentsonline.com/D215836.htmlhttp://www.freepatentsonline.com/3669496.htmlhttp://www.freepatentsonline.com/3751109.htmlhttp://www.freepatentsonline.com/3944280.htmlhttp://www.freepatentsonline.com/4035019.htmlhttp://www.freepatentsonline.com/4057288.htmlhttp://www.freepatentsonline.com/4057288.htmlhttp://www.freepatentsonline.com/4035019.htmlhttp://www.freepatentsonline.com/3944280.htmlhttp://www.freepatentsonline.com/3751109.htmlhttp://www.freepatentsonline.com/3669496.htmlhttp://www.freepatentsonline.com/D215836.htmlhttp://www.freepatentsonline.com/3466084.htmlhttp://www.freepatentsonline.com/D214834.htmlhttp://www.freepatentsonline.com/3275371.htmlhttp://www.freepatentsonline.com/3159428.htmlhttp://www.freepatentsonline.com/3146028.htmlhttp://www.freepatentsonline.com/3111344.htmlhttp://www.freepatentsonline.com/3094357.htmlhttp://www.freepatentsonline.com/3021175.htmlhttp://www.freepatentsonline.com/D186658.htmlhttp://www.freepatentsonline.com/4168669.htmlhttp://www.freepatentsonline.com/4168669.html


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4168669 Adjustable height tray table September, 1979 Arnoff 4240663 Adjustable stacking chair December, 1980 Locher 4290645 Stacking chair September, 1981 Glickman et al.4304436 Stackable chair December, 1981 Rowland4305617 Chair construction December, 1981 BenoitD264405 Stackable chair or the like May, 1982 Adkinson4341419 Stackable chair with arm rests July, 1982 Sebel4366980 Stackable armchair January, 1983 RowlandD269831 Molded shell stack chair July, 1983 Crone4400031 Interlocking chair August, 1983 Dedecker 4418958 Plastics chair shell December, 1983 WatkinD272587 Stackable chair February, 1984 PambergD274392 Stacking chair June, 1984 Blodee4456296 Stackable armchair June, 1984 RowlandD275244 Chair August, 1984 Snodgrass4522444 Stacking chair June, 1985 Pollock 4548441 Stacking chair October, 1985 Ogg4655504 Stackable chair with ganging structure April, 1987 Weber

D290070 Stack chair June, 1987 Lange4674795

Chair frameJune, 1987 Nelson

4676552 Piece of furniture June, 1987 Hiller

D295588 Stackable chair May, 1988 Heitlinger et al.
http://www.freepatentsonline.com/4168669.htmlhttp://www.freepatentsonline.com/4240663.htmlhttp://www.freepatentsonline.com/4290645.htmlhttp://www.freepatentsonline.com/4304436.htmlhttp://www.freepatentsonline.com/4305617.htmlhttp://www.freepatentsonline.com/D264405.htmlhttp://www.freepatentsonline.com/4341419.htmlhttp://www.freepatentsonline.com/4366980.htmlhttp://www.freepatentsonline.com/D269831.htmlhttp://www.freepatentsonline.com/4400031.htmlhttp://www.freepatentsonline.com/4418958.htmlhttp://www.freepatentsonline.com/D272587.htmlhttp://www.freepatentsonline.com/D274392.htmlhttp://www.freepatentsonline.com/4456296.htmlhttp://www.freepatentsonline.com/D275244.htmlhttp://www.freepatentsonline.com/4522444.htmlhttp://www.freepatentsonline.com/4548441.htmlhttp://www.freepatentsonline.com/4655504.htmlhttp://www.freepatentsonline.com/D290070.htmlhttp://www.freepatentsonline.com/4674795.htmlhttp://www.freepatentsonline.com/4676552.htmlhttp://www.freepatentsonline.com/4676552.htmlhttp://www.freepatentsonline.com/4674795.htmlhttp://www.freepatentsonline.com/D290070.htmlhttp://www.freepatentsonline.com/4655504.htmlhttp://www.freepatentsonline.com/4548441.htmlhttp://www.freepatentsonline.com/4522444.htmlhttp://www.freepatentsonline.com/D275244.htmlhttp://www.freepatentsonline.com/4456296.htmlhttp://www.freepatentsonline.com/D274392.htmlhttp://www.freepatentsonline.com/D272587.htmlhttp://www.freepatentsonline.com/4418958.htmlhttp://www.freepatentsonline.com/4400031.htmlhttp://www.freepatentsonline.com/D269831.htmlhttp://www.freepatentsonline.com/4366980.htmlhttp://www.freepatentsonline.com/4341419.htmlhttp://www.freepatentsonline.com/D264405.htmlhttp://www.freepatentsonline.com/4305617.htmlhttp://www.freepatentsonline.com/4304436.htmlhttp://www.freepatentsonline.com/4290645.htmlhttp://www.freepatentsonline.com/4240663.htmlhttp://www.freepatentsonline.com/4168669.htmlhttp://www.freepatentsonline.com/D295588.htmlhttp://www.freepatentsonline.com/D295588.html


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D295588 Stackable chair May, 1988 Heitlinger et al.4749232 Stackable chair foldable back rest of adjustable inclination June, 1988 Guichon

D298492 Stackable chair or similar article November, 1988 Ochsner 4807929 Stackable chair with sliding compartment February, 1989 Balsbaugh

D300885 Stackable chair or similar article May, 1989 Ochsner 4913496 Stackable chair and method of manufacture April, 1990 Oke

D308305 Chair June, 1990 SnodgrassD312005 Chair November, 1990 Snodgrass4978168 Chair having retractable ganging apparatus and

cooperating stacking padDecember, 1990 Piretti

5002337 Stackable and linkable chairs March, 1991 Engel et al.D318959 Chair August, 1991 Fink 5039163 Reinforced flexible backrest assembly for a chair August, 1991 Tolleson

5050933 Stacking chair with collapsible arms September, 1991 Tornero et al.

5064247 Wire rod office furniture stacking chair November, 1991 Clark et al.

D323079 Stackable chair January, 1992 Hubert5088792 Monolithic seat made of injected plastics material February, 1992 Guichon

5110186 Back assembly for wire rod office furniture stacking chair May, 1992 Clark et al.5123702 Interaction-high density stacking chair June, 1992 Caruso

5154474 Stackable line chair October, 1992 DesantaD333733 Stackable interlocking chair March, 1993 Sammons

5201108 Method of assembling office furniture wire rod April, 1993 Clark et al.
http://www.freepatentsonline.com/D295588.htmlhttp://www.freepatentsonline.com/4749232.htmlhttp://www.freepatentsonline.com/D298492.htmlhttp://www.freepatentsonline.com/4807929.htmlhttp://www.freepatentsonline.com/D300885.htmlhttp://www.freepatentsonline.com/4913496.htmlhttp://www.freepatentsonline.com/D308305.htmlhttp://www.freepatentsonline.com/D312005.htmlhttp://www.freepatentsonline.com/4978168.htmlhttp://www.freepatentsonline.com/5002337.htmlhttp://www.freepatentsonline.com/D318959.htmlhttp://www.freepatentsonline.com/5039163.htmlhttp://www.freepatentsonline.com/5050933.htmlhttp://www.freepatentsonline.com/5064247.htmlhttp://www.freepatentsonline.com/D323079.htmlhttp://www.freepatentsonline.com/5088792.htmlhttp://www.freepatentsonline.com/5110186.htmlhttp://www.freepatentsonline.com/5123702.htmlhttp://www.freepatentsonline.com/5154474.htmlhttp://www.freepatentsonline.com/D333733.htmlhttp://www.freepatentsonline.com/D333733.htmlhttp://www.freepatentsonline.com/5154474.htmlhttp://www.freepatentsonline.com/5123702.htmlhttp://www.freepatentsonline.com/5110186.htmlhttp://www.freepatentsonline.com/5088792.htmlhttp://www.freepatentsonline.com/D323079.htmlhttp://www.freepatentsonline.com/5064247.htmlhttp://www.freepatentsonline.com/5050933.htmlhttp://www.freepatentsonline.com/5039163.htmlhttp://www.freepatentsonline.com/D318959.htmlhttp://www.freepatentsonline.com/5002337.htmlhttp://www.freepatentsonline.com/4978168.htmlhttp://www.freepatentsonline.com/D312005.htmlhttp://www.freepatentsonline.com/D308305.htmlhttp://www.freepatentsonline.com/4913496.htmlhttp://www.freepatentsonline.com/D300885.htmlhttp://www.freepatentsonline.com/4807929.htmlhttp://www.freepatentsonline.com/D298492.htmlhttp://www.freepatentsonline.com/4749232.htmlhttp://www.freepatentsonline.com/D295588.htmlhttp://www.freepatentsonline.com/5201108.htmlhttp://www.freepatentsonline.com/5201108.html


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Method of assembling office furniture wire rodstacking chair

p ,

D338785 Stacking chair August, 1993 LangeD340812 Child's stackable chair November, 1993 Estomin et al.D344418 Chair February, 1994 FavarettoD346501 Chair May, 1994 Llusca5308146 Combination chair May, 1994 Chou5383712 Flexible chair January, 1995 PerryD360769 Chair August, 1995 Groulx et al.D362558 Chair September, 1995 ReinhardD364973 Chair December, 1995 De reuver D367185 Chair February, 1996 Olson5524963 Stacking interface device for chairs June, 1996 Barile5524966 Folding chair with tilting backrest June, 1996 PirettiD372596 Chair August, 1996 ReinhardD374129 Stackable chair October, 1996 TimmonsD374561 Chair October, 1996 Meijer D376485 Stacking chair December, 1996 Cretcher D376702 Stack chair December, 1996 Cretcher 5599068

Arcuately supported chair February, 1997 Kelley et al.

D378553 Chair March, 1997 Newhouse

5626394 Tubular chair frame May, 1997 Perry
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Tubular chair frame y, y5632524 Combination chair May, 1997 Ikeda et al.D382415 Stackable chair August, 1997 LeibD389329 Stackable chair January, 1998 Krause et al.D390024 Stack chair February, 1998 Dejule

D391412 Chair March, 1998 James et al.D393757 Stacking chair April, 1998 Breen5738408 Stackable folding chair April, 1998 WuD393955 Chair May, 1998 Piretti5762396 Stackable chair and associated stacking support

assembly

June, 1998 Barile

D396563 Chair August, 1998 Meijer D397880 Stackable chair September, 1998 SaulD398457 Chair September, 1998 Maly5803540 Stackable arm chair September, 1998 Schwartz5813722

Stackable chair September, 1998 Smith

D400023 Chair October, 1998 Olson5845970 Yarn having wicker appearance and article made

there fromDecember, 1998 Schwartz

5860697 School chair January, 1999 Fewchuck 5863096 Stackable and laterally interlockable chairs January, 1999 Bartlmae

D405285 Stackin chair February, 1999 Balderi et al.
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5997094 Stackable chair with lumbar support December, Cvek
http://www.freepatentsonline.com/5997094.htmlhttp://www.freepatentsonline.com/5997094.html


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pp ,1999

D418319 Stackable chair with rounded back January, 2000 Van rhienenD418323 Stackable chair January, 2000 Van rhienenD419321 Stackable chair January, 2000 RhienenD419325 Stackable chair with rounded back January, 2000 Van rhienen

D420522 Stackable chair February, 2000 RhienenD421344 Chair March, 2000 Kaiser D422805 Stackable chair April, 2000 SmithD423805 Chair May, 2000 OlsonD423807 Stacking chair May, 2000 BartlmaeD429423 Stackable chair with enclosed sides August, 2000 Van rhienenD429911 Stackable chair August, 2000 Bartlmae6106061 Stackable leg-over-leg ganging chair August, 2000 Caruso et al.D430415 Stacking chair September,

2000Schultz

D432326 Chair October, 2000 Duffy et al.6131992 Foldable chair supported by rear supporting legs October, 2000 ChangD433576 Stackable chair November,

2000Hutton

D433578 High density stacking chair November,2000

Saul

D433836 Stacking chair November,2000

Barile, sr.

D435176 Chair December,2000

Turner et al.

D436751 Seating product January, 2001 Schacht6174029 Chair with leg reinforcement bar January, 2001 Swy

6234571 Indexing seat for folding chair May, 2001 Atkins et al.
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D443429 Collapsible blow-molded chair June, 2001 Mower et al.D447643 Chair September, 2001 ZempD449459 Seat October, 2001 Diez mintegi6345863 Folding chair with lumbar support and flexible back support February, 2002 Laws et al.D464208 Self-tilting chair October, 2002 KwonD465665 Folding chair November, 2002 Ritchie et al.

D465940 Chair November, 2002 NienD466712 Chair December, 2002 Haney et al.D468921 Ladderback chair January, 2003 KaganD470670 Chair February, 2003 Meyer D472745 Chair back and seat April, 2003 Haney et al.D477470 Folding chair July, 2003 Haney et al.D477926 Chair August, 2003 Haney et al.D477939 Backrest for a chair August, 2003 Haney et al.

6634717 Tilting chair October, 2003 KownD481550 Chair November, 2003 AstleD482540 Chair November, 2003 Ashby6644751 Shock absorbing seat November, 2003 Ratza et al.6679558 Integral blow-molded, steel reinforced automotive seating

structureJanuary, 2004 Adams et al.

6715838 Chair with seat support brackets April, 2004 Pflaster et al.D489192 Blow molded chair May, 2004 Jin et al.D498071 Chair November, 2004 Ashby et al.6871906 Portable folding chair March, 2005 HaneyD507425 Chair July, 2005 Ashby et al.D508339 Chair August, 2005 Astle7014261 Portable folding chair March, 2006 Haney7017986 Folding chair March, 2006 Degen et al.

D519292 Folding chair with armrests April, 2006 AshbyD523254 Lightweight folding chair June, 2006 Nye et al.

Y R k
http://www.freepatentsonline.com/D443429.htmlhttp://www.freepatentsonline.com/D447643.htmlhttp://www.freepatentsonline.com/D449459.htmlhttp://www.freepatentsonline.com/6345863.htmlhttp://www.freepatentsonline.com/D464208.htmlhttp://www.freepatentsonline.com/D465665.htmlhttp://www.freepatentsonline.com/D465940.htmlhttp://www.freepatentsonline.com/D466712.htmlhttp://www.freepatentsonline.com/D468921.htmlhttp://www.freepatentsonline.com/D470670.htmlhttp://www.freepatentsonline.com/D472745.htmlhttp://www.freepatentsonline.com/D477470.htmlhttp://www.freepatentsonline.com/D477926.htmlhttp://www.freepatentsonline.com/D477939.htmlhttp://www.freepatentsonline.com/6634717.htmlhttp://www.freepatentsonline.com/D481550.htmlhttp://www.freepatentsonline.com/D482540.htmlhttp://www.freepatentsonline.com/6644751.htmlhttp://www.freepatentsonline.com/6679558.htmlhttp://www.freepatentsonline.com/6715838.htmlhttp://www.freepatentsonline.com/D489192.htmlhttp://www.freepatentsonline.com/D498071.htmlhttp://www.freepatentsonline.com/6871906.htmlhttp://www.freepatentsonline.com/D507425.htmlhttp://www.freepatentsonline.com/D508339.htmlhttp://www.freepatentsonline.com/7014261.htmlhttp://www.freepatentsonline.com/7017986.htmlhttp://www.freepatentsonline.com/D519292.htmlhttp://www.freepatentsonline.com/D523254.htmlhttp://www.freepatentsonline.com/D523254.htmlhttp://www.freepatentsonline.com/D519292.htmlhttp://www.freepatentsonline.com/7017986.htmlhttp://www.freepatentsonline.com/7014261.htmlhttp://www.freepatentsonline.com/D508339.htmlhttp://www.freepatentsonline.com/D507425.htmlhttp://www.freepatentsonline.com/6871906.htmlhttp://www.freepatentsonline.com/D498071.htmlhttp://www.freepatentsonline.com/D489192.htmlhttp://www.freepatentsonline.com/6715838.htmlhttp://www.freepatentsonline.com/6679558.htmlhttp://www.freepatentsonline.com/6644751.htmlhttp://www.freepatentsonline.com/D482540.htmlhttp://www.freepatentsonline.com/D481550.htmlhttp://www.freepatentsonline.com/6634717.htmlhttp://www.freepatentsonline.com/D477939.htmlhttp://www.freepatentsonline.com/D477926.htmlhttp://www.freepatentsonline.com/D477470.htmlhttp://www.freepatentsonline.com/D472745.htmlhttp://www.freepatentsonline.com/D470670.htmlhttp://www.freepatentsonline.com/D468921.htmlhttp://www.freepatentsonline.com/D466712.htmlhttp://www.freepatentsonline.com/D465940.htmlhttp://www.freepatentsonline.com/D465665.htmlhttp://www.freepatentsonline.com/D464208.htmlhttp://www.freepatentsonline.com/6345863.htmlhttp://www.freepatentsonline.com/D449459.htmlhttp://www.freepatentsonline.com/D447643.htmlhttp://www.freepatentsonline.com/D443429.html


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Year Patent

s

Remark

1959 -

1980

17

1981-

1999

100 57 in98,99,00

2000-

2006

51


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Inventor No. of PatentsVan rhienen 11Haney et al. 7

Bartlmae 4

Olsen 4Rowland 4


34/36

3 rd PartyPatent EvaluationPatent Score

Higher Patent Score ----- Higher Chancesof getting Patent


35/36


36/36

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Presented by, Geeva D.K - 13 Ramya M - 37

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