US3720443A - Seats - Google Patents

Seats Download PDF

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Publication number
US3720443A
US3720443A US00135010A US3720443DA US3720443A US 3720443 A US3720443 A US 3720443A US 00135010 A US00135010 A US 00135010A US 3720443D A US3720443D A US 3720443DA US 3720443 A US3720443 A US 3720443A
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US
United States
Prior art keywords
seating
upright
tube
seat
plate
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 - Lifetime
Application number
US00135010A
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English (en)
Inventor
R Mourgue
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MODERN TUBE
Original Assignee
MODERN TUBE
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Filing date
Publication date
Application filed by MODERN TUBE filed Critical MODERN TUBE
Application granted granted Critical
Publication of US3720443A publication Critical patent/US3720443A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/023—Reclining or easy chairs having independently-adjustable supporting parts the parts being horizontally-adjustable seats ; Expandable seats or the like, e.g. seats with horizontally adjustable parts
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/02—Rocking chairs
    • A47C3/025—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame
    • A47C3/026—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame with central column, e.g. rocking office chairs; Tilting chairs
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/18—Chairs or stools with rotatable seat
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/20—Chairs or stools with vertically-adjustable seats
    • A47C3/28—Chairs or stools with vertically-adjustable seats with clamps acting on vertical rods

Definitions

  • a seat comprises a seating and a back interconnected by an upright which at one end supports the back and at the other end is slidably mounted in an inverted channel shaped plate and is connected by coupling means to an adjustment lever pivotally mounted on the plate.
  • the present invention relates generally to a seat of the type currently used as working seats in typists or similar oliices.
  • a seat of this type generally has a seating support member which is adjustably mounted for height in a base under the control of a clamping handle, the end of the handle acting directly upon the seating support member.
  • said adjustment is, generally, obtained by a button-hole mounting controlled by a control handle which is placed under the seating of the seat and the operation of which is relatively awkward.
  • a seat comprises a seating, a back, a plate supporting said seating and xed to a seating support member, said back being adjustable in terms of distance in relation to said seating support member, and an upright at one end supporting said back and having its opposite end slidably mounted in the seating support plateand connected by coupling means to an adjustment lever pivotally mounted on said plate.
  • FIG. 1 is a perspective View, partly cut-away, of, by way of example, a typists seat,
  • FIG. 2 is, on a larger scale, an axial cross-section view of the base of the seat shown in FIG. 1 and of the associated adjustment mechanisms, along line II-II in FIG. 1,
  • FIG. 3 is an exploded perspective view of some of the parts of the seat shown in FIG. 1.
  • FIG. 4 is a perspective View of the plate which supports the seating of the seat shown in FIG. 1 and the upright o-f the back of the seat, and
  • FIG. 5 is a partial view similar to FIG. 4 and relates to an alternative embodiment of seat.
  • a Seat comprises a base formed of four legs 11, regularly distributed around a 3,720,443 Patented Mar. 13, 1973 ICC central vertical base tube 12, a pivot tube 13 engaged in the base tube 12, a seating support tube 14 adjustable in height in the pivot tube 13, a seating support plate 15, a seating 16 fixed to the said plate 15, and a back 17 supported by an upright 18 slidably mounted in the seating support plate 15.
  • the pivot tube 13 is mounted so as to rotate in the base tube 12 and ax-ially mobile in -said base tube 12 against a damper spring 20.
  • Said spring 20 is placed between a cupring 21 fixed inside the base tube 12, at the lower end of said tube, and a second cup-ring 21 freely arranged in the annular space which exists between the base tube 12 and the pivot tube 13 in the vicinity of the upper end of the base tube 12.
  • This second cup-ring supports a ball thrust bearing 22 against which the pivot tube 13 rests, through a circlip 23 and a thrust-ring 24.
  • the pivo-t tube 13 is guided axially in the base tube 12, on the one hand, by the cup-ring 21, at the lower end of the base tube 12 and, on the other hand, by a guide ring 25, at the top end of the base tube.
  • the upward movement of the pivot tube 13 is limited by a thrust washer 26 which co-operates with the lower cup-ring 21 and which is held by a circlip 27.
  • the upper end of the pivot tube 13 has an open ended notch 30 and is surrounded by a collar 31 mounted thereon by, for example, welding, the collar having, facing said notch, an inner recess 32.
  • this recess 32 constitutes a housing closed at its lower end by the closed lower end 33 of the notch 30 of the pivot tube 13, and at its upper end by a circlip 34.
  • this housing there is arranged a cylindrical roller 36 extending vertically and able to be applied against the seating support tube 14 by a clamping handle 40 of which a threaded end 41 is screwed into a threaded hole 42 in a radially extending boss 43 of the collar 31.
  • the seating support tube 14 has longitudinally, along a portion of its height, a channel 45 in which the roller 36 bears; in a manner known per se this channel 45 has a certain degree of inclination longitudinally (see FIG. 2).
  • the seating support plate 15 includes a sole-plate 46 the two short ends of which are raised to form wings 47 used to secure the seating 16.
  • the sole-plate 46 On its bottom surface the sole-plate 46 has a strap 48 through which passes the seating support tube 14. Said strap 48 ⁇ may be fixed to the tube 14 by, for example, welding.
  • the sole-plate 46 of the seating support plate bears an omega-shaped or upturned channel member 50 having a side notch 51.
  • the upright 18 of the back 17 of the seat is slidably mounted in this member 50.
  • This upright 18 which, in this embodiment, is of at cross-section has, between the back 17 and the seating 16, an elbow 55 (see FIG. l) having the general appearance of a semi-circle and, as shown in FIG. 4, forms a toothed rack 56 at the position of the notch 51 in the member 50 in which the upright 18 is engaged. Facing this notch there is a toothed segment 60, which is pivotably mounted at 61 to the seating support plate under the control of an adjustment lever 62, which engages the toothed rack 56 of the back upright 1S.
  • the adjustment in height of the seating 16 ofthe seat which is advantageously a swivelling seat, is etfected by loosening the handle 40, and then causing the seating support tube 14 to slide or move axially according to the desired adjustment in height. It will then be suicient to tighten the handle 40 again. Because of the roller 36, which distributes advantageously the clamping pressure over an appreciable length of the seating support tube 14, no swaging of the tube 14 is to be feared.
  • the adjustment in height of the back 17 in relation to the seating support tube 14 is eiected by operating the adjustment lever 62 which controls the toothed rack of the back upright 18.
  • the position of the seat 17 remains stable, in view of the reversing effect which a leaning action upon the back applies to the toothed rack 56, which reversing effect causes a locking of said toothed rack.
  • the elbow 55 of the upright 18 advantageously imparts to said upright the necessary resilience for this purpose. Friction means are, in addition, associated with the toothed sector 60 to oppose too great an ease of reversibility of control of the latter.
  • clamping handle 40 and the adjustment lever 62 are easily accessible, even for a seated person; they are both under the seating 116 of the seat and project laterally, on the same side of the seating plate.
  • the coupling means which conneet the sliding end of the back upright 18 to its adjustment lever 62, include a toothed rack.
  • these coupling means include a peg 70 which is supported by the sliding end of the upright 18 and passes through a guiding aperture 71, formed in the omega-shaped part 50 of the seating support plate 15, and which peg is in engagement with a fork 72 integral with the adjustment lever 62 which is, as before, pivotably mounted at 61 on the seating support plate 15.
  • a fork comparable with the fork 72 is formed by two pegs similar to peg 70 and supported by the upright 18, the end of the lever 62 being in engagement with these pegs and passing between them.
  • the present invention is not limited to the embodiments described above, particularly as regards the nature and the conguration of the pressure distributor pad interposed between the seating support tube 14 and its clamping handle 40.
  • This pressure distributor pad could, for example, be a ball, or conform to the shape of the tube 14, and/or be made in any suitable synthetic material.
  • a seat comprising a seating, a back, a plate supportthe adjustment lever and which engages with the said toothed rack.
  • a seat according to claim 1, wherein the coupling means have a fork integral with one of the back upright and adjusting lever parts, and a peg which is integral with the other of these parts and which is in engagement with the said fork.
  • a seat according to claim 1, wherein the adjustment lever is arranged under the seating and projects laterally in relation to the seating plate.
  • a seat according to claim 1 wherein the seating support member is adjustably mounted for height in a base, under the control of a clamping handle, this clamping handle and the adjustment lever both being arranged under the seating, adjoining each other, and on the same side in relation to the seating plate.
  • a seat according to claim 1, wherein the seating support upright is a tube pivotably mounted in a base and axially movable relatively to the base against resilient means.
  • a seat comprising a seating, a back, means supporting said seating, an upright having one end supporting said back, the end of said upright remote from said back extending generally horizontally forwardly, means mounting said remote end of said upright for generally horizontal sliding movement in said seating supporting means, and a lever pivotally mounted on said seating supporting means and connected to said remote end of said upright so that swinging movement of said lever in one direction slides said remote end generally horizontally forwardly to move said back forward and swinging movement of said lever in the other direction moves said remote end generally horizontally rearwardly to move said back rearwardly.
  • a seat according to claim 8 and means mounting said lever for horizontal swinging movement about an upright axis intermediate the ends of said lever with one end of said lever projecting as a handle for manipulation of said lever and the other end of said lever connected to said remote end of said upright.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs Characterized By Structure (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
US00135010A 1970-04-27 1971-04-19 Seats Expired - Lifetime US3720443A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7015247A FR2088828A5 (de) 1970-04-27 1970-04-27

Publications (1)

Publication Number Publication Date
US3720443A true US3720443A (en) 1973-03-13

Family

ID=9054649

Family Applications (1)

Application Number Title Priority Date Filing Date
US00135010A Expired - Lifetime US3720443A (en) 1970-04-27 1971-04-19 Seats

Country Status (10)

Country Link
US (1) US3720443A (de)
BE (1) BE765483A (de)
CA (1) CA942651A (de)
CH (1) CH532920A (de)
DE (1) DE2051705A1 (de)
ES (1) ES168335Y (de)
FR (1) FR2088828A5 (de)
GB (1) GB1291802A (de)
NL (1) NL7105530A (de)
SE (1) SE7105314L (de)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3837704A (en) * 1973-06-21 1974-09-24 F Bauer Seating furniture
US4432582A (en) * 1981-12-17 1984-02-21 Wilkhahn-Wilkening & Hahne Gmbh & Company Chair with means for adjusting the inclination of the backrest
US4455048A (en) * 1981-06-11 1984-06-19 Itw Fastex Italia S.P.A Seats with a device for locking the inclination of the seat back
US5066069A (en) * 1990-05-03 1991-11-19 Systems Furniture Company Chair back and seat adjustment mechanism
US5338133A (en) * 1993-03-05 1994-08-16 Tornero Lino E Lever clamp mechanism
WO1995012338A1 (en) * 1993-11-01 1995-05-11 Labofa A/S A working chair with synchronous seat and back adjustment
DE29517301U1 (de) * 1995-11-02 1995-12-21 Broscheid, Karl, 53639 Königswinter Zusammenklappbare, abnehmbare, stapelbare Rückenlehne für Festzelt- und Freizeitgarnitur
US5516197A (en) * 1992-06-15 1996-05-14 Condos; Jim Chair
US5586811A (en) * 1994-08-15 1996-12-24 Tornero; Lino E. Adjustment device for chair arms
US5810439A (en) * 1996-05-09 1998-09-22 Haworth, Inc. Forward-rearward tilt control for chair
US5967610A (en) * 1998-01-26 1999-10-19 Lin; Chen-Da Chair with swivel seat and backrest
US6209963B1 (en) 1999-05-06 2001-04-03 Miotto International, Inc. Variable configuration mounting arrangement for a chair back support member
US6386635B1 (en) * 2000-08-18 2002-05-14 Gary A. Ralph Shock absorbing boat seat assembly
US7222920B1 (en) * 2005-06-17 2007-05-29 Washington James N Adjustable chair
US7243997B1 (en) 2004-01-20 2007-07-17 Tornero Lino E Positioning device for furniture
US20070246990A1 (en) * 2006-04-20 2007-10-25 Distribution Gablex Inc. Abdominal support swivel chair
US20080174162A1 (en) * 2007-01-19 2008-07-24 Burckhard Becker Motor Vehicle Seat with Adjustable Seat depth
US20080224521A1 (en) * 2005-03-18 2008-09-18 Kathleen Topping Portable Obstetrics Chair
US20110303818A1 (en) * 2010-06-10 2011-12-15 Grand Rapids Controls Co., Llc Lift strut with mechanical spring element
US20120019038A1 (en) * 2010-07-23 2012-01-26 Marcelo Mezzera Back connecting bar for the no-tools connection of a chair back to a chair seat
CN102846054A (zh) * 2012-04-20 2013-01-02 浙江德慕家具有限公司 一种椅子

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2436588A1 (fr) * 1978-09-22 1980-04-18 Cannone Christian Fut amortisseur notamment pour siege
US4520981A (en) * 1983-05-23 1985-06-04 Marvco Tool & Mfg. Inc. Adjustable telescopic support
US4667605A (en) * 1986-09-22 1987-05-26 Hamilton Industries, Inc. Adjustable table leg assembly
NL8800970A (nl) * 1988-04-14 1989-11-01 Zwaardvis B V Inrichting voor het op elkaar vastzetten van telescopisch ten opzichte van elkaar verschuifbare elementen.
WO1992019132A1 (en) * 1991-05-08 1992-11-12 Earl Owen A chair
AU661312B2 (en) * 1991-05-08 1995-07-20 Earl Owen A chair
DE4210282C1 (de) * 1992-03-28 1993-04-01 Martin Stoll Gmbh, 7890 Waldshut-Tiengen, De

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3837704A (en) * 1973-06-21 1974-09-24 F Bauer Seating furniture
US4455048A (en) * 1981-06-11 1984-06-19 Itw Fastex Italia S.P.A Seats with a device for locking the inclination of the seat back
US4432582A (en) * 1981-12-17 1984-02-21 Wilkhahn-Wilkening & Hahne Gmbh & Company Chair with means for adjusting the inclination of the backrest
US5066069A (en) * 1990-05-03 1991-11-19 Systems Furniture Company Chair back and seat adjustment mechanism
US5516197A (en) * 1992-06-15 1996-05-14 Condos; Jim Chair
US5338133A (en) * 1993-03-05 1994-08-16 Tornero Lino E Lever clamp mechanism
WO1995012338A1 (en) * 1993-11-01 1995-05-11 Labofa A/S A working chair with synchronous seat and back adjustment
AU674801B2 (en) * 1993-11-01 1997-01-09 Labofa A/S A working chair with synchronous seat and back adjustment
US5586811A (en) * 1994-08-15 1996-12-24 Tornero; Lino E. Adjustment device for chair arms
DE29517301U1 (de) * 1995-11-02 1995-12-21 Broscheid, Karl, 53639 Königswinter Zusammenklappbare, abnehmbare, stapelbare Rückenlehne für Festzelt- und Freizeitgarnitur
US5810439A (en) * 1996-05-09 1998-09-22 Haworth, Inc. Forward-rearward tilt control for chair
US5967610A (en) * 1998-01-26 1999-10-19 Lin; Chen-Da Chair with swivel seat and backrest
US6209963B1 (en) 1999-05-06 2001-04-03 Miotto International, Inc. Variable configuration mounting arrangement for a chair back support member
US6386635B1 (en) * 2000-08-18 2002-05-14 Gary A. Ralph Shock absorbing boat seat assembly
US7243997B1 (en) 2004-01-20 2007-07-17 Tornero Lino E Positioning device for furniture
US20080224521A1 (en) * 2005-03-18 2008-09-18 Kathleen Topping Portable Obstetrics Chair
US7222920B1 (en) * 2005-06-17 2007-05-29 Washington James N Adjustable chair
US20070246990A1 (en) * 2006-04-20 2007-10-25 Distribution Gablex Inc. Abdominal support swivel chair
US7618090B2 (en) * 2006-04-20 2009-11-17 Distribution Gablex Inc. Abdominal support swivel chair
US20080174162A1 (en) * 2007-01-19 2008-07-24 Burckhard Becker Motor Vehicle Seat with Adjustable Seat depth
US7997648B2 (en) * 2007-01-19 2011-08-16 C. Rob. Hammerstein Gmbh & Co. Kg Motor vehicle seat with adjustable seat depth
US20110303818A1 (en) * 2010-06-10 2011-12-15 Grand Rapids Controls Co., Llc Lift strut with mechanical spring element
US20120019038A1 (en) * 2010-07-23 2012-01-26 Marcelo Mezzera Back connecting bar for the no-tools connection of a chair back to a chair seat
CN102846054A (zh) * 2012-04-20 2013-01-02 浙江德慕家具有限公司 一种椅子
CN102846054B (zh) * 2012-04-20 2014-09-24 浙江德慕家具有限公司 一种椅子

Also Published As

Publication number Publication date
NL7105530A (de) 1971-10-29
BE765483A (fr) 1971-08-30
SE7105314L (en) 1971-10-28
FR2088828A5 (de) 1972-01-07
ES168335Y (es) 1972-04-01
CA942651A (en) 1974-02-26
GB1291802A (en) 1972-10-04
CH532920A (fr) 1973-01-31
ES168335U (es) 1971-09-01
DE2051705A1 (de) 1971-12-02

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