CA2077821A1 - Chair back stand adjustable for height - Google Patents
Chair back stand adjustable for heightInfo
- Publication number
- CA2077821A1 CA2077821A1 CA 2077821 CA2077821A CA2077821A1 CA 2077821 A1 CA2077821 A1 CA 2077821A1 CA 2077821 CA2077821 CA 2077821 CA 2077821 A CA2077821 A CA 2077821A CA 2077821 A1 CA2077821 A1 CA 2077821A1
- Authority
- CA
- Canada
- Prior art keywords
- fixed
- moving element
- height
- oscillating
- lever
- 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.)
- Abandoned
Links
- 238000011084 recovery Methods 0.000 claims abstract 2
- 230000000295 complement effect Effects 0.000 claims 1
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/36—Support for the head or the back
- A47C7/40—Support for the head or the back for the back
- A47C7/402—Support for the head or the back for the back adjustable in height
Landscapes
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
- Cosmetics (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
Abstract
"CHAIR BACK STAND ADJUSTABLE FOR HEIGHT"
ABSTRACT
The invention relates a chair back stand adjustable for height composed of a vertical fixed element (12), a moving element (13) which can be vertically moved on the fixed one and supports the back, and stop means (19) to clamp at different heights the moving element on the fixed one. Stop means is an oscillating lever installed on a supporting block (21) set on the fixed element and it is provided with a stop peg (23) which interacts with positioning notches (18) on the moving element and with a control push-button which contains recovery springs.
Fig. 3
ABSTRACT
The invention relates a chair back stand adjustable for height composed of a vertical fixed element (12), a moving element (13) which can be vertically moved on the fixed one and supports the back, and stop means (19) to clamp at different heights the moving element on the fixed one. Stop means is an oscillating lever installed on a supporting block (21) set on the fixed element and it is provided with a stop peg (23) which interacts with positioning notches (18) on the moving element and with a control push-button which contains recovery springs.
Fig. 3
Description
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t~ .? S i ~t.-`d r..!l. e~ r~ r~c~ t~ F:~ :)r~ l ~ I t~iQ ~ r?r p~-~r l: ~3l:
].ei~.c;t l:~rlr- ~;t1~ 15 r~rl ~t~i.r~r~ e l.~ C~ F~ Cr.~d.
TO g~ticle the mQv:L~ J elr?ml?r~ , alc:)r)~.J t:h(! fis:erl el~?mr:~r~t ~ r:1rcitrc~sic~nr~ 'Lh ~r e ~!r r~vi ded in thr-clir t?:ti.C:) r~ f tli (::.? ~3`(i5~ Wlij.C:Il 171.3 tcl~ wi t~ vr!rki c r~l Cc~lTii\l--s;h i~F:~ r ?cl rJ i ~l i d t-!r-- 17 l c~ e( l c)n t. h r? ~: p p r:!r.j i t. e ~ i d r.-~s rJf t h r?
mr)ving ?Jerrlent~ var~tc~gr?c:!~ ly7 thr? ~rC)t:rnsioion~c3 16 cc~n bl:? h(3al:lin(3~ tn\i. rlc.~l :i.n thr! w:in (J~i~ clf t.he f:i,:ed r? ~. ~?~l~f?r~ \ c~ t~ JI~ :i. 9 ~ r~ l 6 . I t~(.. l E~ e ~t l JC~
10 el~.?mr?l~t5 L'..:', :1.:.; ar e c:c:~n)l:~:int?(:~ ncJ r r.~:i prc:~ V cc~r~terr.~ri :i.n tw~ di.rect:i.~ Wh~ ::tl ar-e c~r t:l)o9l:)or\l al")(J r-elat:ivP
tc) th r? r;hi.f ti.n9 CJ:i.l'" ~?~::tic:~n C.3 ~::)~i the n~ Vir)~"l eJ.e(l)~.-.!r~t.
Ihe m~:~virlg r-!1r.~n~ellt i3 i~j fc:)rn~rl f:or I:),-\r-t c:~F i.t r ~ r! i. /31~ t: t~ y r ~ r.~ k (::: ~ ~? .~ .d r l ! ~ (.. l V ~? r t: i ~ l :I. y i 3 r ~ 1 :1 5 i.nt:er3c.~t: w:i.th 3 C;tc~ c:!vr~r l.~'J t.C:I f:in: thr? ec~c.~i.vi~lent f: er~erlt p~ci:i~t::i~nr~cqi r.:~F t:ht:? ~nCnv:i r~J C?1 r?mer~t: :l'~. 31 r.~n~3 e i: :i :: t?CI Cl l t:~ J. ..? r:lf l.: 11 t.-! E:i ~'. ;.3 r I t:l :I t ~ .
~r~ c~ r~ t:i c~r~ t.l"~t:~ F:~ t: W:i ~tt~ tl-~r.? I~ t.t:l~r~; :L~ e n~ v:i rl t.l C? l r:?tllt-lr~ !. i3~ r.ic:l l'IL\5 ~.3 r~ tt?--l :i. Ic t? Fl (!r"l::i~ c:!r~
20 wl-l i. c:h . c.~sl t Qrl( lri C:l(:)Wl il`J;il"' 1::15 :~1'11:1 i t i. t; ~11 I::! ~:i l:lI.-!C:I Wi vr.~rtici~l f:iril.3~ ? ''~Oa cl c:~-,ec.l ;~1: the t:~o ttc~ni thrl:~ur3h .
t.~ar- 2CIh.
ThP ~.itc)~.~ levr:!r 1'~ dbsellit)lel::l n~1r) the fixecl r-~:lt?ment .1.2 i.r~ :.r~ i\ w..~ ari ~r:~ 3r..i:1:L;~ tl~r~J~y~ c~ 5llF~ ti~lr3 25 I::i 1 cIc 2J. wl i :i.~ j r; t: II -1:)C~ Pt.~ t ~ 51~ . f i S~t?~ ].r?lllr!r I 1:
:
,1 2a77~l tl~r oc~rlh pr!rl6 ar~ scr ew~ I.cl~ lt: is rt?mar l~.~ble that t:he suF)pr.lrt:incl blC!~ l i. fc:!rmr?cl t~ twr.~ ar tci t:onrlt;~c:tr.~cl t:~y c~ jo:i n t J i n e ~ a -- s-.;r?r-~ I iys~ i n c,r-~ler t o f or m a 6incJl e cump~let:t? F3iece~ I hr~ i.nl. I i ne .2:1a per-mi. ts to 5 or:~t-.~n i~nr~ ,r J y tlire Lwr:~ pr.~rtC; ;.in(i to rr~?ad jl~st thE?III
par-~l 1 ely ar-ld t: ~:! F i.:S l:h e t~lr:!(:::l: 1 n t. t'~(.? f i~:r~?d f~?l emerl t. t:2, Thi5 tllclr-k ~ h;a r; al50 '1 f ro nl ~ !a r~1: -~!1 t:l wllic:l~ in 5 r:rtsin t:he vr?l-l:i.ca:l f:is5~.ll-e ',~ oF tlir.? mr.!~,'in~ elt.?lnent 1i~
fa:i.li.l:atil-lg i.le. 9~Jillr:!~ rh/: frr.~rltal. pc~r~t ~21b al5r:
10 CQ rlc-;ti t L11:. r?5~ . 1.?1::l(3t~ .:?1.1' W tli.cll illt l? r-i~l:tc; w:i. tli t tle ll-!wt-~r c ]. os :i rl~3 c:: r C 1s i. n( l t) .. ~r .;`Ll Of t h :i ~-i f :i s~iur- r~ , :i n or r:l er t: o cl l? t (? r r(i i l l (:! ;~ l ; C:I t tl (.? ~ s i. m cl lli v t ~ r- t. i. ~ s t~ :l f l: i. r7 g c:~ F t t i t !
mOV:i.1"19 elemellt: i:3 al-ld 1:o avc!:i(l t.tlt? tit.?-(c~ .i.ng r:)f t:he t:w o c.. u n 5 l::i tl.(l::i li .l r.?:l.elll c ? I ) 1 5i ~ Wt IC ~11 tl Ic ! t:l I c3 c l: i c; f ;, ::C?Cl t:l i e 15 a~!it?(llt:~ lll::l t:tl(? ~3~ r i:~ti~ I:tl~.. ?~ e t~ .?1 e~l~r.?llt:'3 (:~
t~ r-? O t~ t i ~ i r~ ci Cl r I 1 y l~ I S.'.:! 1 ! 1-~ 9 I. I-l l ? r:~ .l i .~ t r? ~ 1 :i l: r:! F) i ~ r l: ..
5 J. :i. (:~ t ~ t ~. y ~ ? ~:~l t:! ~ t. I l ~::? i~ i r I l: i (J ~ t r.. ~ r- i 5 l r~ t ~ f: t:.l l~:! t~ r~
l r~ t 1 ) e (l\ :i r:l ~ t t I (? c; t: ~:!I.l l. ~.. ! ~ I::~r l. c~ 1: t l ~:? r t? i ~ r-Z ()C;c:i 1 .I~tiir-(J i~~ ir; '~',?~ ~lr~ i t 9~ t~ 7 rl~:?lJ ';~?~ J i:~t :i t~; t.)(:~t tol7l ;.:~ rl ~ :)l r~ t:~ : L~
-rhi s c)r3ci 11 at:i.ng a~ iE~ 'i S f c:~rmer:l t)y two CC:!-i.:l~:ial pivots ~2a wh:i rh protr~r:le 4r~r:~m l:hr-- c~r:lr:lo~c;~ r! par~ts o4 the levr?r IC~ i.n a trasver-3al c1iFC~r t.lcc~n rr.-.lat:ively l:o 25 tl~r~ I ~-ver- ;~r~ r~l.l i O I ~ l E t. t l ~ r: :i. rl ~l , ;
,. ~ 2B77821 pr i:3p er St?i.~ 1 ot:)t.ain~ .ir-~ t: ht~ ..' por l.ini b.lc)c k al~ hl.!; t:iy -,r-l ;.~r~rJ~ r- ~ r~nlricJ (:If: the t:wr.~ part 3 I-tf thr.
bl. c3c.~ r3ee. F-:irl. a- :i.r~ c~r-dr-l t.Ct ] i.r~r~ mp the pivc)ts.i ~ ?-~
wi th l l-le. ~ ~t.tu~/c?-n)E~r-~ t: :i or~r:~(::l .-!r?r.~t s .;:`1 r~nd by tl-~e 5 reapF)rc3aclliny of t:hE~ twrl p.-.~rts.-i r~sii showri i.r~ t i.g. 7 i~
Orl:lr?r I-.Q hC~].(.I t-l~t? J~tvr.r t3;~ lt:,vi.ct~ y th~? lraver t~;t is i~s-..;r. n~ ].r..!d om thr-~ Ll:l.c)c:l: .~ i(..ifor e~ sir.~t:. I l. im(s .~nd f i:ri.r~y tht? h I r.lr.. k i n th r! 4is:e(-J r~l.r-~mr.~r~l: 1.;?.
a ~ r~ :i(')r~ S' ~ r! I\e(l ';:'~ j t:l~t:~ it~ r-?vr?r l9 is 0 to ~:)( c~ y t~? t:~::)si.l :i.(::~r-~in(:~ rlc~t(:~ s-i I.t~ c)4 tl~(..` ~n~ ir~y e].(!mer~t 1,!; C:'i("l to t:)l.c:)(::l: i t ;:t1: (:li F ~C!r r-~rit hr?i yh t:-, 30 t l~ t I~ t:? ~)r.?(~ :; r-~ l:ir~y ~ .?~ (3ir~J t~lr.~ I~ot~ r i~ C:: (.:13 r (::1 i. r 19 t C:~ t: I 1 r.-~ I::! i C :~ .i t .;. i 11 J 1110 ~r l 151~.? ( i t . S :i O f t . tl P 1 t:! V t:? r :1.'~ c..r.lr~tro:l].t.!(:l l!`t ;.1 F.i~.lc:i!lt:t(.lt:l.l:)r~
T I 1 :i 5 c:: o I ~ t: r I ~ 51 -I I.i 1.. l t ts. c:) ! i ~ 1.: I::i 1 I s :; i. Ei t S 3 1:) t r i ~ ) :i. E! (:: C? - f i ' l -5-- w~:ic:~ ;dS.. i ;~ r-Qt:c:~lr-~:l s~ f~ :h ~ r ~:5 l.l~ sl~ r?
jr.~ ~::i.r~3 ~ t:i~ r r~ r~ F~?~ :i.r~ ].t! I::~ l!;:~t(.!(~ ir~
the t~c~t.t.c:lm p;.~lrt: CJf t.h~.? le!\~:!r ;3ri~.l el.ar.;t:.i.c sier:t:i.r:~r~s; ~ lb wl I i.(::1 i ].t:`~.il 1 Oll tllF.? t :i 111:.:.~(::1 t!~f?lll6:!1lt~ . bil IC:I r.:~(::: t r?~C:i r e( OVC?~ y 20 s-ipr i.nq t:t~ In;..~l~t.;~i.rl i~rlci r c.?~-!iet thc! .;top leve~ :i.n t.hc pC:)~i t:i ~ r~ ir~ w~ h :i t si r!(~cJ ~ ?~Clc~ S.i tl~ .-si.
r~t! i~t~C~V~:!-C:I~.!s:iCl i.l:~(:?C:l r~ L-tr~ r~ t~? ~ r t:l.y c(3r~t.;:~:ir,r.. ~:1 ir r?~ p r Ci t e C t l Vt? ( ;~ ~r;e ~
;
:
Claims (4)
1. A chair back stand adjustable for height, comprising a fixed vertical element (12), a moving element (13) which can be vertically moved along the fixed element and that supports the back, and a stop lever (19) which can be fixed at the different heights of the moving element along the fixed one, characterized in that:
- the fixed element (12) has a U-shaped section with two parallel wings (12a) provided with protrusions (16) in direction of its axis;
- the moving element (13) is vertically guided through the parallel wings of the fixed element and it has lateral vertical guides (17) which match with said protrusions (16);
- the moving element (13) has positioning notches (18) vertically set and a plate-shaped part (20) which extends downwards and is provided with a vertical fissure (20a) closed at the bottom through a bar (20b);
- to the fixed element (12), between its wings (12a), a supporting block (21) is fixed on which an oscillating lever (19) is installed, and constitutes a stop system to fix the height of the moving element relatively to the fixed one, said block (21) having a guided part in said vertical fissure (20a) which interacts with said bar (20b) in order to avoid the decoupling of the two elements;
- the fixed element (12) has a U-shaped section with two parallel wings (12a) provided with protrusions (16) in direction of its axis;
- the moving element (13) is vertically guided through the parallel wings of the fixed element and it has lateral vertical guides (17) which match with said protrusions (16);
- the moving element (13) has positioning notches (18) vertically set and a plate-shaped part (20) which extends downwards and is provided with a vertical fissure (20a) closed at the bottom through a bar (20b);
- to the fixed element (12), between its wings (12a), a supporting block (21) is fixed on which an oscillating lever (19) is installed, and constitutes a stop system to fix the height of the moving element relatively to the fixed one, said block (21) having a guided part in said vertical fissure (20a) which interacts with said bar (20b) in order to avoid the decoupling of the two elements;
2. Stand according to claim 1, in which said supporting block (21) presents two complementary parts connected through a joint line (21a) to open angularly and join again parallely, and in which the oscillating lever (19) has an intermediate oscillating axis (22) composed of two coaxial and opposite pivots (22a) which settle and are hold back in proper s?ats (21') formed in the supporting block because of the opening and closing of the two parts which form the block.
3. Stand according to claim 2, in which said oscillating lever (19) presents on the opposite sides of the middle oscillating axis (22) a peg (23) interacting with the notches (18) of the moving element (13) and a control push-button (24).
4. Stand according to 3, in which said push-button is a single piece and has a notched shaft (24a) which works through a jerking motion on the oscillating lever (19), and elastic sections (24b) which lean on the fixed element and act as recovery spring to mantain and re-set the stop lever in the position in which its peg (23) engages the positioning notches (18).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITBS/91/U/000077 | 1991-09-10 | ||
| IT000077 IT224262Z2 (en) | 1991-09-10 | 1991-09-10 | HEIGHT ADJUSTABLE SUPPORT FOR THE CHAIR BACK |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2077821A1 true CA2077821A1 (en) | 1993-03-11 |
Family
ID=11344642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2077821 Abandoned CA2077821A1 (en) | 1991-09-10 | 1992-09-09 | Chair back stand adjustable for height |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0532476A1 (en) |
| CA (1) | CA2077821A1 (en) |
| IT (1) | IT224262Z2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITUD930224A1 (en) * | 1993-11-10 | 1995-05-10 | Ta Srl De | DATTILO OFFICE CHAIR WITH SWIVEL COLUMN WITH SPAN BASE ON WHEELS |
| AU715954B2 (en) * | 1996-10-15 | 2000-02-10 | Workspace Commercial Furniture Pty Ltd | Latch mechanism to control height adjustment of various seat components |
| US10070727B2 (en) | 2012-10-17 | 2018-09-11 | Formway Furniture Limited | Chair and supports |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE515802C (en) * | 1931-01-14 | Albert Stoll | Chair with adjustable backrest | |
| GB1371641A (en) * | 1971-11-23 | 1974-10-23 | Parnall & Sons Ltd | Chairs |
| US4015878A (en) * | 1976-01-16 | 1977-04-05 | Perkins Charles M | Chair construction for long use comfort |
| DE3527783A1 (en) * | 1985-08-02 | 1987-02-12 | Froescher August Gmbh Co Kg | ADJUSTING DEVICE FOR THE STEP-BY-STEP LOCKING HEIGHT ADJUSTMENT OF BACKRESTS ON WORK CHAIRS |
| US5007678A (en) * | 1989-10-11 | 1991-04-16 | Steelcase Inc. | Chair back height adjustment mechanism |
-
1991
- 1991-09-10 IT IT000077 patent/IT224262Z2/en active IP Right Grant
-
1992
- 1992-09-07 EP EP92830472A patent/EP0532476A1/en not_active Withdrawn
- 1992-09-09 CA CA 2077821 patent/CA2077821A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| ITBS910077U1 (en) | 1993-03-10 |
| ITBS910077V0 (en) | 1991-09-10 |
| IT224262Z2 (en) | 1996-03-14 |
| EP0532476A1 (en) | 1993-03-17 |
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| Date | Code | Title | Description |
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| FZDE | Dead |