US3297360A - Chair - Google Patents

Chair Download PDF

Info

Publication number
US3297360A
US3297360A US450349A US45034965A US3297360A US 3297360 A US3297360 A US 3297360A US 450349 A US450349 A US 450349A US 45034965 A US45034965 A US 45034965A US 3297360 A US3297360 A US 3297360A
Authority
US
United States
Prior art keywords
arms
seat
chair
leg
spring means
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
US450349A
Inventor
Holmstrom Erik Folke
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.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3297360A publication Critical patent/US3297360A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • A47C7/44—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
    • A47C7/445—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with bar or leaf springs
    • 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
    • A47C3/0252—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame connected only by an elastic member positioned between seat and base frame
    • 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

Definitions

  • spring means comprising at least one U-shaped leaf spring, one of the substantially parallel arms of said leaf spring being connected to said leg means and the other arm of said leaf spring being connected to said seat means.
  • the spring means comprise at least two U-shaped leaf springs disposed side by side in substantially parallel relationship with their arms extending in two substantially horizontal planes, arms of said springs extending in one of said substantially horizontal planes being fastened adjacent their free ends to an intermediate member, said intermediate member being fastened to said leg means and the arms extending in the other substantially horizontal plane being fastened to said seat means.
  • the new spring means is bent from a single flat bar so as to form two U-shaped springs disposed in side by side parallel relationship separated by a space, with an arm of one of said springs being connected across said space with an arm of the other one of said springs by a preferably curved connecting portion.
  • the leg means can, for instance, consist of a vertical post in which a seat supporting column is rotatably supported, as is customary for ofiice furniture and the like.
  • the leg means can, however, also consist of a normal three or four legged supporting structure.
  • the intermediate member connecting the individual U-springs or the connecting portion of the unitary U-spring means can be fastened to the rotatable column whereas in the other case the intermediate member or a member attached to the connecting portion of a unitary spring means can be attached to frame parts connecting all or certain ones of the individual legs of the leg means.
  • these frame parts are cross members connecting two legs disposed on each side of the chair.
  • FIGURE 1 is a perspective view of a spring means according to the invention.
  • FIGURE 2 is a perspective view of a modified form of the spring means.
  • FIGURE 3 is a schematic view showing how a spring means according to the invention is fastened to a single post leg means.
  • FIGURE 4 is a view similar to FIGURE 3 showing the way of fastening the spring means to a chair frame with four legs, and
  • FIGURE 5 is a side view of a single post chair in which the spring means shown in FIGURE 1 is used for resiliently supporting the seat.
  • the spring means shown in FIGURE 1 consists of two horizontally disposed U-shaped leaf springs A having lower arms 1 which are shorter than the upper arms 2.
  • the ends of the arms 1 are connected by an intermediate member B.
  • the intermediate member is provided in its middle with an opening for receiving the upper end of the central column of a single post leg arrangement.
  • the upper arms 2 are provided with holes for fastening these arms to the seat of the chair.
  • a unitary connecting portion connects the two lower arms of two leaf springs A, the two leaf springs and the connecting portion being formed by correspondingly bending a spring steel bar.
  • FIGURES 3 and 4 show how the modifications of the spring means according to FIGURES 1 and 2 are fastened to a single post rotatable leg arrangement and to the frame of a multiple leg chair respectively to the cross members connecting pairs of the chair legs.
  • FIGURE 5 shows the arrangement of the spring means according to FIGURE 1 between the seat C and the rotatable single post support D of a club chair.
  • a chair comprising seat means having a front edge, leg means and spring means connecting said seat means to said leg means, said spring means constituting the sole connection between said seat means and said leg means and comprising leaf spring means with two pairs of substantially U-shaped arms, the arms of said arm pairs having different lengths and being disposed in substantially parallel relationship with the arms extending in two superposed substantially horizontal planes, the shorter arms in the lower one of said planes being connected with one another and with said leg means, and the longer arms being directly connected with said feet means with the U-bend -of said arms disposed a substantial distance from said front edge of said seat means.
  • a chair according to claim 1 characterized in that the free ends of said lower shorter arms are connected v) by an intermediate member and said member being fastened at its ends to said leg means.
  • a chair according to claim 1 wherein the free ends of said lower shorter arms diverge towards one another and are integrally connected with one another by a connecting portion, said connecting portion being aflixed and connected at its middle portion to said leg means with the other interconnected arms secured directly to the side edges of said seat means.
  • a yieldingly mounted seat structure capable of rocking movement towards all sides, comprising a pedestal base having an upright, 21 seat structure having front and side edges, and a pair of U-shaped leaf springs having upper arms of a greater length than the lower arms with the arms connected by a return bent portion, said upper arms being directly connected to the underside of said seat structure adjacent the side edges thereof, the return bent portions of said U-shaped leaf springs being spaced a considerable distance from the front edge of said seat and a rigid bar connecting the ends and shorter portions of the lower arms with said pedestal standard.

Description

Jan. 10, 1967 E. F. HOLMSTROM CHAIR 2 Sheets-Sheet 1 Filed April 23, 1965 Jan. 10, 1967 E. F. HOLMSTROM CHAIR Filed April 25, 1965 Fig.5
2 Sheets-Sheet 2 United States Patent 3,297,360 CHAIR Erik Folke Holrnstriim, Strandgatan 12B, Vasa, Finland Filed Apr. 23, 1965, Ser. No. 450,349 Claims priority, application Germany, Apr. 23, 1964, H 52,480 Claims. (Cl. 297-300) The invention concerns a resilient chair comprising leg means and seat means connected by spring means.
Known spring means for resilient chairs of this type have the drawback thatwhile permitting a rocking movement of the seat in one directionthey impart little or no resiliency to the seat in vertical direction. Apart from that these known spring means are structurally complicated and expensive.
It is an object of the invention to provide a spring arrangement for chairs of the aforementioned type which apart from giving the seat of the chair sufiicient resiliency in vertical direction permits the seat to execute completely silent rocking movements towards all sides.
According to the invention this object is attained by using spring means comprising at least one U-shaped leaf spring, one of the substantially parallel arms of said leaf spring being connected to said leg means and the other arm of said leaf spring being connected to said seat means.
Preferably the spring means comprise at least two U-shaped leaf springs disposed side by side in substantially parallel relationship with their arms extending in two substantially horizontal planes, arms of said springs extending in one of said substantially horizontal planes being fastened adjacent their free ends to an intermediate member, said intermediate member being fastened to said leg means and the arms extending in the other substantially horizontal plane being fastened to said seat means.
Such an arrangement assures for all practical purposes a sufficient vertical resiliency for the seat without interfering in undesirable manner with rocking movements of the seat directed forwardly and rearwardly or towards the sides. Over and beyond that the device according to the invention is so simple that it can be manufactured without difiiculties and high expense and be applied even to single chairs. The device is also easily adaptable to any type of chairs. Even expensive chairs of high artistic value can be furnished with these new spring means, as spring means of any required size can, if necessary, be manufactured by any mechanic without special equipment.
In an advantageous modification of the invention the new spring means is bent from a single flat bar so as to form two U-shaped springs disposed in side by side parallel relationship separated by a space, with an arm of one of said springs being connected across said space with an arm of the other one of said springs by a preferably curved connecting portion.
The leg means can, for instance, consist of a vertical post in which a seat supporting column is rotatably supported, as is customary for ofiice furniture and the like. The leg means can, however, also consist of a normal three or four legged supporting structure. In the first case the intermediate member connecting the individual U-springs or the connecting portion of the unitary U-spring means can be fastened to the rotatable column whereas in the other case the intermediate member or a member attached to the connecting portion of a unitary spring means can be attached to frame parts connecting all or certain ones of the individual legs of the leg means. Preferably these frame parts are cross members connecting two legs disposed on each side of the chair.
Several modifications of the invention will now be described on hand of the accompanying drawings in which:
FIGURE 1 is a perspective view of a spring means according to the invention.
FIGURE 2 is a perspective view of a modified form of the spring means.
FIGURE 3 is a schematic view showing how a spring means according to the invention is fastened to a single post leg means.
FIGURE 4 is a view similar to FIGURE 3 showing the way of fastening the spring means to a chair frame with four legs, and
FIGURE 5 is a side view of a single post chair in which the spring means shown in FIGURE 1 is used for resiliently supporting the seat.
The spring means shown in FIGURE 1 consists of two horizontally disposed U-shaped leaf springs A having lower arms 1 which are shorter than the upper arms 2. The ends of the arms 1 are connected by an intermediate member B. The intermediate member is provided in its middle with an opening for receiving the upper end of the central column of a single post leg arrangement. The upper arms 2 are provided with holes for fastening these arms to the seat of the chair.
In the modification according to FIGURE 2 a unitary connecting portion connects the two lower arms of two leaf springs A, the two leaf springs and the connecting portion being formed by correspondingly bending a spring steel bar.
FIGURES 3 and 4 show how the modifications of the spring means according to FIGURES 1 and 2 are fastened to a single post rotatable leg arrangement and to the frame of a multiple leg chair respectively to the cross members connecting pairs of the chair legs.
FIGURE 5 shows the arrangement of the spring means according to FIGURE 1 between the seat C and the rotatable single post support D of a club chair.
What I claim is:
1. A chair comprising seat means having a front edge, leg means and spring means connecting said seat means to said leg means, said spring means constituting the sole connection between said seat means and said leg means and comprising leaf spring means with two pairs of substantially U-shaped arms, the arms of said arm pairs having different lengths and being disposed in substantially parallel relationship with the arms extending in two superposed substantially horizontal planes, the shorter arms in the lower one of said planes being connected with one another and with said leg means, and the longer arms being directly connected with said feet means with the U-bend -of said arms disposed a substantial distance from said front edge of said seat means.
2. A chair according to claim 1 wherein the free ends of said lower shorter arms are connected by an intermediate member, said member being fastened in its center to a central post of said leg means.
3. A chair according to claim 1, characterized in that the free ends of said lower shorter arms are connected v) by an intermediate member and said member being fastened at its ends to said leg means.
4. A chair according to claim 1 wherein the free ends of said lower shorter arms diverge towards one another and are integrally connected with one another by a connecting portion, said connecting portion being aflixed and connected at its middle portion to said leg means with the other interconnected arms secured directly to the side edges of said seat means. I
5. In a yieldingly mounted seat structure capable of rocking movement towards all sides, comprising a pedestal base having an upright, 21 seat structure having front and side edges, and a pair of U-shaped leaf springs having upper arms of a greater length than the lower arms with the arms connected by a return bent portion, said upper arms being directly connected to the underside of said seat structure adjacent the side edges thereof, the return bent portions of said U-shaped leaf springs being spaced a considerable distance from the front edge of said seat and a rigid bar connecting the ends and shorter portions of the lower arms with said pedestal standard.
References Cited by the Examiner UNITED STATES PATENTS 202,576 4/1878 Otto 297303 X 1,875,034 8/1932 Larsen 297302 2,313,559 3/1943 Larsen 297-302 2,353,737 7/1944 Lorenz 297304 X 2,782,838 2/1957 Gruber 297300 X FOREIGN PATENTS 73,218 3/1948 Norway.
FRANK B. SHERRY, Primary Examiner.
G. O. FINCH, Assistant Examiner.

Claims (1)

1. A CHAIR COMPRISING SEAT MEANS HAVING A FRONT EDGE, LEG MEANS AND SPRING MEANS CONNECTING SAID SEAT MEANS TO SAID LEG MEANS, SAID SPRING MEANS CONSTITUTING THE SOLE CONNECTION BETWEEN SAID SEAT MEANS AND SAID LEG MEANS AND COMPRISING LEAF SPRING MEANS WITH TWO PAIRS OF SUBSTANTIALLY U-SHAPED ARMS, THE ARMS OF SAID ARM PAIRS HAVING DIFFERENT LENGTHS AND BEING DISPOSED IN SUBSTANTIALLY PARALLEL RELATIONSHIP WITH THE ARMS EXTENDING IN TWO SUPERPOSED SUBSTANTIALLY HORIZONTAL PLANES, THE SHORTER ARMS IN THE LOWER ONE OF SAID PLANES BEING CONNECTED WITH ONE ANOTHER AND WITH SAID LEG MEANS, AND THE LONGER
US450349A 1964-04-24 1965-04-23 Chair Expired - Lifetime US3297360A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH52480A DE1294617B (en) 1964-04-24 1964-04-24 Springy chair

Publications (1)

Publication Number Publication Date
US3297360A true US3297360A (en) 1967-01-10

Family

ID=7158027

Family Applications (1)

Application Number Title Priority Date Filing Date
US450349A Expired - Lifetime US3297360A (en) 1964-04-24 1965-04-23 Chair

Country Status (4)

Country Link
US (1) US3297360A (en)
AT (1) AT255062B (en)
DE (1) DE1294617B (en)
GB (1) GB1046574A (en)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4889385A (en) * 1988-03-09 1989-12-26 American Seating Company Chair seat-and-back support
US4982997A (en) * 1988-08-04 1991-01-08 Snugli, Inc. Bouncer infant carrier
US5039164A (en) * 1989-09-05 1991-08-13 Omni Products International, Inc. Chairs having swivel and rocker features
EP0622995A1 (en) * 1992-01-15 1994-11-09 Lavaco Industries, Inc. Resilient chair support
US5599064A (en) * 1995-07-27 1997-02-04 Telescope Casual Furniture Co. Swivel rocker
US5664835A (en) * 1994-03-25 1997-09-09 Peter Roeder Chair
US6752458B1 (en) * 2002-12-13 2004-06-22 Tropitone Furniture Co., Inc. Rocking chair
US6827401B2 (en) 2001-10-17 2004-12-07 La-Z-Boy Incorporated Leaf spring rocker mechanism for a reclining chair
US20080169687A1 (en) * 2005-12-16 2008-07-17 Michael Clay Collapsible chair and method
US20090148288A1 (en) * 2007-12-07 2009-06-11 Darryl Jessie Vertical furling for wind turbines
US20090243368A1 (en) * 2006-04-14 2009-10-01 La-Z-Boy, Incorporated Rocking reclining chair
EP2158823A1 (en) * 2008-08-25 2010-03-03 Burgess Furniture Ltd. Chair with spring-mounted seat element
US20110285191A1 (en) * 2010-05-20 2011-11-24 Knoll, Inc. Chair
JP2011255071A (en) * 2010-06-11 2011-12-22 Okamura Corp Chair
JP2011255072A (en) * 2010-06-11 2011-12-22 Okamura Corp Chair
US11197548B2 (en) * 2019-12-16 2021-12-14 Allseating Corporation Reclining control system for a chair

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4411468A (en) * 1981-03-05 1983-10-25 Homecrest Industries Incorporated Rocking chair
DE3638273A1 (en) * 1986-10-13 1988-04-21 Thonet Geb Gmbh Piece of seating furniture
US11766126B1 (en) * 2022-03-10 2023-09-26 Xuanbin Yang Highly steady rotary chair

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US202576A (en) * 1878-04-16 Improvement in oscillating chairs
US1875034A (en) * 1931-02-26 1932-08-30 Heywood Wakefield Co Spring base furniture
US2313559A (en) * 1940-06-28 1943-03-09 Heywood Wakefield Co Chair
US2353737A (en) * 1942-09-14 1944-07-18 Lorenz Anton Chair
US2782838A (en) * 1953-09-25 1957-02-26 Eli H Gruber Beach chairs

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3127219A (en) * 1964-03-31 Stokke
DE672258C (en) * 1936-01-30 1939-02-25 William Howard Sadgrove Suspension of an upholstered chair, armchair or the like.
US2768674A (en) * 1953-04-09 1956-10-30 Leroy C Phenix Spring suspension for rocking chairs

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US202576A (en) * 1878-04-16 Improvement in oscillating chairs
US1875034A (en) * 1931-02-26 1932-08-30 Heywood Wakefield Co Spring base furniture
US2313559A (en) * 1940-06-28 1943-03-09 Heywood Wakefield Co Chair
US2353737A (en) * 1942-09-14 1944-07-18 Lorenz Anton Chair
US2782838A (en) * 1953-09-25 1957-02-26 Eli H Gruber Beach chairs

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4889385A (en) * 1988-03-09 1989-12-26 American Seating Company Chair seat-and-back support
US4982997A (en) * 1988-08-04 1991-01-08 Snugli, Inc. Bouncer infant carrier
US5039164A (en) * 1989-09-05 1991-08-13 Omni Products International, Inc. Chairs having swivel and rocker features
EP0622995A1 (en) * 1992-01-15 1994-11-09 Lavaco Industries, Inc. Resilient chair support
EP0622995A4 (en) * 1992-01-15 1996-04-10 Lavaco Ind Inc Resilient chair support.
US5664835A (en) * 1994-03-25 1997-09-09 Peter Roeder Chair
US5599064A (en) * 1995-07-27 1997-02-04 Telescope Casual Furniture Co. Swivel rocker
US6827401B2 (en) 2001-10-17 2004-12-07 La-Z-Boy Incorporated Leaf spring rocker mechanism for a reclining chair
US7175232B2 (en) 2002-12-13 2007-02-13 Tropitone Furniture Co., Inc. Rocking chair
US20040164219A1 (en) * 2002-12-13 2004-08-26 Richard Rivera Rocking chair
US6752458B1 (en) * 2002-12-13 2004-06-22 Tropitone Furniture Co., Inc. Rocking chair
US20080169687A1 (en) * 2005-12-16 2008-07-17 Michael Clay Collapsible chair and method
US20090243368A1 (en) * 2006-04-14 2009-10-01 La-Z-Boy, Incorporated Rocking reclining chair
US7845727B2 (en) * 2006-04-14 2010-12-07 La-Z-Boy Incorporated Rocking reclining chair
US20090148288A1 (en) * 2007-12-07 2009-06-11 Darryl Jessie Vertical furling for wind turbines
US20100060057A1 (en) * 2008-08-25 2010-03-11 Burgess Furniture Ltd. Chair with spring-mounted seat element
EP2158823A1 (en) * 2008-08-25 2010-03-03 Burgess Furniture Ltd. Chair with spring-mounted seat element
US20110285191A1 (en) * 2010-05-20 2011-11-24 Knoll, Inc. Chair
US8616640B2 (en) * 2010-05-20 2013-12-31 Knoll, Inc. Chair
JP2011255071A (en) * 2010-06-11 2011-12-22 Okamura Corp Chair
JP2011255072A (en) * 2010-06-11 2011-12-22 Okamura Corp Chair
US11197548B2 (en) * 2019-12-16 2021-12-14 Allseating Corporation Reclining control system for a chair

Also Published As

Publication number Publication date
GB1046574A (en) 1966-10-26
DE1294617B (en) 1969-05-08
AT255062B (en) 1967-06-26

Similar Documents

Publication Publication Date Title
US3297360A (en) Chair
US4109961A (en) Adjustable chair
US4183494A (en) Swiveled leaf-spring undercarriage for rocking chair
ATE20571T1 (en) CHAIR.
US4790596A (en) Resilient chair
PT65175A (en) Chair
US2631655A (en) Chair
EP0925809B1 (en) Physical exercise device simulating the use of a bicycle
GB1086032A (en) Spring assemblies, particularly for box springs for beds
US1962464A (en) Chair
US3868144A (en) Spring mechanism for a tiltable member of a tilting chair
US2118676A (en) Lawn chair
US2083716A (en) Chair
US2465104A (en) Chair with vertically adjustable seat
US3393940A (en) Ottoman or stool
US2202630A (en) Chair
US2658555A (en) Spring chair construction
US3276818A (en) Chair construction
US2502857A (en) Chair
US2409826A (en) Chair
AU595763B2 (en) Rocking chair
US3147998A (en) Back rest
US2968483A (en) Rocking horse
US2100475A (en) Spring seat construction
US1691053A (en) Tablet armchair