US3417956A - Chair control - Google Patents

Chair control Download PDF

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Publication number
US3417956A
US3417956A US569640A US56964066A US3417956A US 3417956 A US3417956 A US 3417956A US 569640 A US569640 A US 569640A US 56964066 A US56964066 A US 56964066A US 3417956 A US3417956 A US 3417956A
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US
United States
Prior art keywords
chair
bracket
column
lever arm
pan
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
US569640A
Other languages
English (en)
Inventor
Helms Charles Robert
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.)
Art Metal Knoll Corp
Original Assignee
Art Metal Knoll Corp
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 Art Metal Knoll Corp filed Critical Art Metal Knoll Corp
Priority to US569640A priority Critical patent/US3417956A/en
Priority to GR670135177A priority patent/GR35177B/el
Priority to NO169086A priority patent/NO132376C/no
Priority to GB33778/67A priority patent/GB1160634A/en
Priority to SE1079267A priority patent/SE348929B/xx
Priority to DE19671654284 priority patent/DE1654284C3/de
Priority to BR191683/67A priority patent/BR6791683D0/pt
Priority to BE702130D priority patent/BE702130A/xx
Priority to NL676710607A priority patent/NL153076B/xx
Priority to DK393367AA priority patent/DK127316B/da
Priority to ES1967139003U priority patent/ES139003Y/es
Priority to FR1548373D priority patent/FR1548373A/fr
Priority to FI672093A priority patent/FI45077C/fi
Priority to AT715067A priority patent/AT284379B/de
Priority to CH1095067A priority patent/CH482424A/de
Application granted granted Critical
Publication of US3417956A publication Critical patent/US3417956A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • 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
    • A47C7/443—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with coil springs

Definitions

  • ABSTRACT OF THE DISCLOSURE A chair control mechanism for controlling tilting movement of a chair seat from a horizontal position, wherein the support column includes a pivot bracket having spaced vertical arms, said chair seat includes a mounting bracket including a second pair of spaced vertical arms, a control means comprising a pair of lever arms, a pivot pin pivotally mounting said first and second pair of vertical arms and said pair of lever arms, adjustment means mounted on the mounting bracket comprising a threaded stud fixedly mounted to the mounting bracket and a handwheel threadedly engaged on the stud and rotatable to vary the position of the second lever arm, and resilient means engaging the first lever arm and referencing it to the support column.
  • Chair control mechanisms for controlling the degree of opposition to tilting movement e.g. for controlling spring tension
  • the standard chair control mechanisms include exposed parts, such as springs and brackets, immediately under the upper seat portion. These parts are unsightly, and also cause practical difficulties such as snagging or dirtying of the clothes of the occupant.
  • design trends and the commercial requirements of the market have demanded chairs whose appearance is unmarred by such unsightly exposed mechanical parts.
  • the art has seen various attempts to devise a practical chair control mechanism without exposed parts other than an adjustment lever, wheel, or knob.
  • Another object of the invention is to provide an improved chair control mechanism of simplified and compact construction.
  • Another object of the invention is to provide a chair control mechanism characterized by improved ease of adjustment of the tilting resistance of the chair.
  • the chair control includes a tubular column carrying the chair seat at its upper end and having its lower end telescopingly received within a hub forming part of the chair base.
  • a supporting pan rigidly secured to the chair seat is pivotally mounted on a bracket rigidly connected to the top of the column to provide tilting movement of the chair relative to the column.
  • the column includes a housing for receiving and supporting the lower end of a coil spring.
  • the upper end of the spring is engaged by a lever pivotally mounted on the mounting bracket for movement therewith, the coil United States Patent Patented Dec. 24, 1968 spring yieldingly opposing tilting movement of the chair seat.
  • the opposite end of the lever is adjustable relative to the mounting bracket to adjust the initial compression of the coil spring.
  • FIG. 1 is a front elevational view of a portion of a chair incorporating the improved chair control mechamsm;
  • FIG. 2 is a sectional view on the line 2-2 of FIG. 1 and shows details of the chair control mechanism
  • FIG. 3 is a top plan view of a seat supporting pan and shows certain of the elements of the chair control mechanism of FIGS' 1 and 2;
  • FIG. 4 is a perspective fragmentary view of the seat supporting pan shown partly in section along the line 22 of FIG. 1;
  • FIG. 5 is a perspective fragmentary view of a chair support column and bracket also shown in FIGS. 2 and 3;
  • FIG. 6 is an exploded perspective view of a control lever and a plunger also shown in FIGS. 2 and 3.
  • FIG. 1 shows a fragmentary view of a chair seat indicated generally at 1, which includes a seat supporting pan 5, and which is tiltably mounted upon a supporting base 2 by an intermediate chair control mechanism indicated generally at 3, which mechanism is manually operable by a handwheel 4.
  • chair seat 1 is any seat member attached to pan bracket 50.
  • Pan 5 may be considered the chair seat, although padding or the like, or other structure, may be supported by pan 5. Consequently, the general reference to chair seat 1 is made herein, but reference to pan 5 will be equivalent thereto.
  • the chair control mechanism 3 includes a pan bracket 5a secured to the pan 5 by suitable means, such as screws 6. The seat 1 is thereby pivotally connected through pan bracket 5a to a column 8 as more fully described below.
  • the chair control mechanism 3 yieldingly opposes tilting movement of the chair seat 1 relative to the column 8, and such opposition is adjustable by means of handwheel 4.
  • the tubular column 8 is telescopingly received within a tubular hub 9 which is rigidly connected to, and may comprise part of the supporting base 2.
  • FIG. 1 in showing the external outline of the chair control mechanism 3, clearly illustrates the compactness thereof and the way in which the mechanism 3 is integrated into the normal outline of the chair. It is also apparent that the component elements of the invention are either enclosed or substantially concealed from view; as a result, the mechanisms are very neat in appearance and protected from contact with the occupants clothing.
  • FIGS. 2 to 6 are shown various views of elements according to the invention, in each case oriented such that the left hand side in each figure represents the rear, and the right hand side represents the front, respectively, of the chair control mechanism 3 when attached to chair seat 1.
  • the pan bracket 5a includes a peripheral mounting flange 5b in which apertures 50 are provided for receiving the screws 6.
  • the pan 5, with the chair seat 1 therein, may thereby be secured rigidly to pan bracket 5a.
  • the pan bracket 5a is cast in a metal, such as iron, although it may equally well be cast or otherwise formed from other metals.
  • a corresponding pair of depending, substantially parallel side portions 10 formed integrally with flange 5b, and including a pair of transverse, axially aligned apertures 11 for pivotal connection of the pan bracket 5a to the support column 8, as will presently be described.
  • the side walls 10 include thickened sections 12 surrounding the apertures 11 to provide increased strength.
  • a pair of horizontal, inwardly extending side flanges 13 are integrally formed at the bottom edges of the side walls 10, and a contoured front wall 14 extends between the side walls 10 and integrally joins the side flanges 13 to an inward edge of the peripheral flange b at the front end of the bracket.
  • An elongated slot 140 is formed in the center of the front wall 14, extending from the bottom edge of wall 14 to the flange 5b.
  • An interior, rear wall 16 extends between the side walls and includes thickened end sections 16a (only one of which is shown) integral with the rear edges of the side flanges 13.
  • An exterior, contoured rear wall 17 extends between the side walls 10 and joins the bottom edge of the rear wall 16 to an inward edge of the flange 5b at the rear of the pan bracket 5:2. It is preferred, for increased strength, that ribs 15 be formed joining the interior rear wall 16 to the exterior rear wall 17 and to the adjacent inward edge of the flange 517.
  • a lip 18 is formed integrally with the interior rear wall 16 and extends inwardly at a slightly depending angle from the flange 5b. The lip 18 serves as a rear limit stop, or back stop, to limit the maximum angle of rearward tilting of the chair, in a manner presently to be described.
  • a threaded shaft 19 is mounted within the front portion of flange 51), extending vertically downward in a generally perpendicular relationship to the plane of the flange 5b.
  • the shaft 19 is preferably formed of steel and includes an enlarged head 20.
  • the shaft 19 conveniently may be rendered integral with the pan bracket 5a by suitably supporting the head 20 within a die (not shown) in which the pan bracket 5a is cast such that it will be encased and surrounded by the metal of the flange 5!).
  • an elevator bolt (not shown) may be employed, and in this instance the bolt will be inserted in a hole (not shown) in pan bracket 50, with the enlarged head rotatably captured (e.g. by having a flat thereon, or by being hexagonal, etc.) in a concentric depression (not shown) in pan bracket 5a. This avoids the necessity of casting-in shaft 19.
  • the pan bracket 5a thus defines an aperture or inlet 21 which is surrounded by the horizontal flanges 13 on the sides, the contoured wall 14 at the front, and the interior rear wall 16 at the rear.
  • the aperture 21 provides an inlet into the interior of the bracket 5a for receiving a top end of the column 8 to which the pan bracket 5a is pivotally connected.
  • the elongated slot 14a in the contoured front wall 14 communicates with the aperture 21 and the interior of the bracket 5:: for a purpose presently to be described.
  • a pivot bracket 25 includes a pair of spaced vertical arms 26 joined by an integral, horizontal web 27.
  • An aperture 28 is provided in the web 27 for receiving the column 8, and the web 27 is welded to the column 8, as indicated at 29 (FIG. 2).
  • a pair of apertures 30 are provided in the arms 26 and aligned along a horizontal axis, and a pair of hardened bushings 31 are received in the apertures 30.
  • pan bracket 5a is pivotally connected to the support column 8 for tilting movement of the chair seat 1 relative to the column 8.
  • a pivot pin 32 is rotatably mounted in the bearings 31 in the vertical arms 26 of bracket 25 and is received through the aperture 11 in the side walls 10 of pan bracket 5a to provide the pivotal connection.
  • a control member 34 shown in perspective in FIG. 6, includes an aperture 35 in a central portion thereof by which it is mounted on the pivot pin 32.
  • the control member 34 includes a threaded aperture 36, the axis of which is transverse to and intersects the axis of the aperture 35, for receiving a set screw 37.
  • the pivot pin 32 includes an indent or a flattened surface 32a (FIG. 2)
  • the control member 34 comprises a first lever arm 39 and a second lever arm 40 which extend outwardly from the central portion at aperture 35.
  • the end of the first lever arm 39 includes a transverse groove recess 41 and the end of the second lever arm 40 is bifurcated to form an elongated slot 42.
  • a plunger 43 also shown in perspective in FIG. 6, cooperates with the control member 34 and includes a horizontal, circular plate 44, an upper tongue member 45 having a convex upper extremity 46, and a lower, axially aligned shaft 47.
  • the plunger 43 is received within the column 8 in axial alignment, the tongue member 45 extending above the top of the column 8.
  • the first lever arm 39 extends rearwardly to position the groove recess 41 in axial alignment with the tongue 45 of plunger 43, the recess 41 of lever arm 39 receiving the convex upper extremity 46 of the tongue 45 in mating relationship.
  • the mating surfaces 41 and 46 undergo a very slight relative motion during tilting movement of the chair, as will be described shortly.
  • the second lever arm 40 extends through the slot 14:: in the front wall 14 of pan bracket 5a and the slot 42 is received over the threaded shaft 19 with the bifurcated end portion resting on the handwheel 4.
  • the column 8 is indented or otherwise formed to include an annular instep 50 intermediate its upper and lower ends.
  • a retainer plate 51 is received diametrically within the column 8 and includes an annular shoulder 51a to facilitate seating on the instep 50. If desired, the retainer plate 51 may be welded to the column 8, although this is not necessary.
  • the retainer plate 51 defines a housing 52 within the upper portion of the column 8.
  • Resilient means is received in the housing 52 and preferably comprises a light weight, inner coil spring 53 and a coaxial, heavier weight, outer coil spring 54.
  • any suitable resilient means such as an axially aligned stack of conical washers, or the like, may be employed.
  • a cylindrical sleeve 55 of plastic or other suitable material is received within the housing 52 in close engagement with the interior cylindrical walls of the column 8 to prevent direct metal to metal contact of the spring with the column wall.
  • the housing may be lubricated to assure continued durability and quiet operation of the springs 53 and 54.
  • the coil springs 53 and 54 are finished on their end surfaces, as indicated at 53a and 54a to seat on the retainer plate 51 and, as indicated at 53b and 54b, to seat on the plate 44 of the actuating member 43.
  • the lower shaft 47 extends into the inner coil spring 53 and assists in maintaining both springs 53 and 54 in axial alignment within the housing 52.
  • the control member 34 In operation, during tilting movement of the chair seat 1, the control member 34 is held by the handwheel 4 on shaft 19 in fixed relationship to the pan bracket 5a for common rotation with the pivot pin 32 relative to the bracket 25 (within the bushings 31) and the column 8.
  • the first lever arm 39 of the control member 34 forces the plunger 43 axially downwardly, the mating surfaces 41 and 46 undergoing slight relative motion to provide for transferring the arcuate motion of the control member 34 to axial motion of the plunger 45.
  • the relative motion of these surfaces is very slight and by suitable choice of materials and lubricants, does not result in any wearing of these elements. Since the surfaces are entirely enclosed within the pan bracket 5a, there is no possibility of the lubricant coming into contact with the occupant of the chair.
  • the coil springs 53 and 54 resiliently oppose downward axial displacement of the plunger 45, thereby yieldingly opposing tilting movement of the pan bracket 5a with chair seat 1 relative to the column 8.
  • the rearward tilting of chair seat 1 is ultimately limited by abutment of lip 18 against rear flange portion 27a of the web 27.
  • the springs 53 and 54 are chosen to be stifl? enough to prevent tilting of the chair seat 1 to such an extent under normal conditions, but the rear stop provided by lip 18 and flange portion 27a insures against an occupant being injured should the tension mechanism be improperly adjusted or should too great a load be placed in the chair seat 1.
  • the springs 53 and 54 also resiliently urge the pan bracket 5a with chair seat 1 to a normal, generally horizontal position in which chair seat 1 is substantially perpendicular to the axis of column 8.
  • the chair seat 1 will return to the generally horizontal position, and tilting forward will be limited by the engagement of flanges 13 of pan bracket 5a with the lower surfaces of the web 27 of the bracket on both sides of column S, as may be seen in FIG. 3.
  • the chair control mechanism may be adjusted to change the yielding opposition to tilting movement of the chair 1 by rotating handwheel 4 in one or the other direction.
  • the greater length of the second lever arm relative to the first lever arm 39 provides a mechanical advantage, easing the rotation of handwheel 4 in efiecting the tension adjustment of springs 53, 54.
  • it is selectively axially displaced along the threaded stud 19 in a direction closer to, or farther away from, the pan bracket 5a.
  • the control member 34 and the pivot pin 32 rotate in fixed relationship about the horizontal pivot axis, relative to both the pan bracket 5a and the pivot bracket 25; thus, the pivot pin 32 rotates within the bushings 31 and within the apertures 11. Since the rotation of the pivot pin 32 within the apertures 11 occurs only during adjustment of the chair control mechanism, there is no need to provide bearings or lubrication between their contacting surfaces.
  • control member 34 The rotation of control member 34 on pivot pin 32 axially displaces the plunger to vary the initial compression of the coil springs 53 and 54, and thus the initial yielding opposition of the chair control mechanism 3 to tilting movement of the chair seat 1.
  • the tension control mechanism is shown adjusted to provide a minimum yielding opposition to tilting movement.
  • Plunger 43 is substantially at the top extreme of its travel, and the springs 53 and 54 are under a minimum of compression.
  • handwheel 4 is turned and advanced axially upwardly along the shaft 19, thereby to rotate control member 34 in a counterclockwise direction (as viewed in FIG. 2).
  • control member 34 will cause a downward axial movement of the plunger 45 into the housing 52, thereby increasing the initial compression of the springs 53 and 54 and increasing the initial tension or yielding opposition thereof to tilting movement of the pan bracket 5a.
  • the procedure may of course be reversed to decrease the initial tension or yelding opposition to tilting movement.
  • the feature of concealing the coil springs or other resilient means in housing 52 within the column 8 not only improves the appearance of the chair control mechanism but also avoids exposing the springs to act as dirt collectors and thus to detract from the appearance of the furniture. Frequently, oil, grease or other lubricants are applied to the springs to ease the compression thereof and to reduce noise during tilting movement; the housing 52 therefore enables more efficient lubrication of the springs while also avoiding the possibility of the lubricated springs soiling the clothes of the occupant of the chair or otherwise detracting from the appearance of the chair.
  • the pan bracket 5a is contoured to provide a pleasing appearance and is compact such that it is substantially unnoticeable. Nevertheless, the tilt mechanism offers excellent yielding opposition to tilting movement and provides a firm and secure mounting of the chair seat to a support column. Adjustment of the tension is achieved with the greatest ease and conveniently may be accomplished while a person is seated in the chair. Moreover, the tilt control mechanism employs a minimum number of parts and may be manufactured at low cost.
  • the chair seat 1 may be rotatable on chair base 2, as well as tiltable.
  • the relationship of column 8 to tubular hub 9 will advantageously allow rotation of the former within the latter.
  • Serial Number 569,641 filed concurrently herewith, entitled Rotatable Chair Height-Control Mechanism, is shown and described a height control mechanism adapted to provide selective height adjustment of column 8 with respect to tubular hub 9.
  • a chair control mechanism for controlling tilting movement of a chair seat from a horizontal position comprising:
  • a vertical support column including first mounting means adjacent the upper end of said column and spaced from the vertical axis thereof adapted to horizontally support a pivot pin;
  • control means including a central portion received upon said pivot pin, a first lever arm extending toward the vertical axis of said support column, and a second lever arm extending away from the vertical axis of said support column;
  • adjustment means comprising a threaded stud fixedly mounted on said second mounting means and means received on said stud and rotatable to vary the axial position thereof along said stud, engageable with said second lever arm of said control means for holding said second lever arm in a selected, fixed position relative to said second mounting means;
  • a chair control mechanism for controlling tilting movement of a chair seat from a horizontal position comprising:
  • a vertical support column including a pivot bracket adjacent the upper end of said column and an elongated, vertically aligned, hollow housing, said pivot bracket including a pair of spaced vertical arms defining a first pair of cylindrical apertures aligned in a horizontal axis;
  • a mounting bracket adapted to be mounted rigidly to the chair seat and including a second pair of spaced vertical arms defining :a second pair of cylindrical apertures aligned in a horizontal axis;
  • control means including a central portion defining a fifth cylindrical aperture and first and second lever arms extending from said central portion on substantially diametrically opposite sides of said aperture, said second lever arm including an apertured end portion;
  • adjustment means comprising a threaded stud fixedly mounted on said mounting bracket and received by said apertured end portion of said second lever arm, and a handwheel received on said stud and rotatable to vary the axial position of said handwheel along said stud, engageable with said second lever arm of said control means for holding said second lever arm in a selected, fixed position relative to said mounting bracket;
  • said adjustment means being adjustable for rotating said control means about said horizontal pivot axis relatively to said mounting bracket to change said selected, fixed position and concomitantly to move said first lever arm for adjusting the initial yielding opposition of said resilient means to tilting movement of said mounting bracket.
  • said pivot bracket includes a flange portion extending laterally of said vertical support column; said mounting bracket includes a mounting flange portion adapted to be secured rigidly to said chair seat, spaced side portions vertically depending from said mounting flange and including said second pair of spaced vertical arms, an inwardly turned flange at the bottom of at least one of said spaced side portions and an inwardly turned lip adjacent an inward edge of said mounting flange at the rear of said mounting bracket; and wherein said inwardly turned flange of said mounting bracket engages the lower surface of said laterally extending flange portion of said pivot bracket to limit forward tilting movement of said mounting bracket and said inwardly turned lip engages an upper surface of said laterally extending flange portion of said pivot bracket to limit the rearward tilting movement of said mounting bracket.
  • a chair of control mechanism for controlling tilting movement of a chair seat about a horizontal axis comprising:
  • a support column including a hollow housing portion and means spaced from the axis of the hollow housing portion for receiving and horizontally supporting a pivot pin;
  • control means fixedly mounted on the pivot pin so as to pivot with the pivot pin, said control means having a first lever arm extending toward the support column and a second lever arm extending away from the support column;
  • (f) means engaging the second lever arm of the control means for selectively adjusting the position of the second lever arm relative to the bracket so that the position of the first lever arm may be concomitantly varied relative to the resilient means to selectively increase or decrease the initial yielding opposition of the resilient means.
  • a chair control mechanism as defined in claim 6 in which the means for selectively adjusting the position of the second lever arm includes threaded means fixedly mounted on the bracket and rotatable means receivable on the threaded means to vary the axial position of the rotatable means along the threaded means, said rotatable means engageable with the second lever arm so that the position of the second lever arm relative to the horizontal axis may be selected to provide the desired initial yielding opposition of the resilient means.
  • bracket includes a pan portion which surrounds and encloses the control means and the means for supporting the pivot pin, said pan portion having a first aperture through which the support column extends and a second aperture through which the adjustment means extends.

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  • Chairs Characterized By Structure (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
US569640A 1966-08-02 1966-08-02 Chair control Expired - Lifetime US3417956A (en)

Priority Applications (15)

Application Number Priority Date Filing Date Title
US569640A US3417956A (en) 1966-08-02 1966-08-02 Chair control
GR670135177A GR35177B (el) 1966-08-02 1967-07-18 Ρυθμιζομενη καρεκλα.
NO169086A NO132376C (xx) 1966-08-02 1967-07-18
GB33778/67A GB1160634A (en) 1966-08-02 1967-07-21 Chair Control
SE1079267A SE348929B (xx) 1966-08-02 1967-07-24
DE19671654284 DE1654284C3 (de) 1966-08-02 1967-07-28 Vorrichtung zur Kippbewegung der Sitzfläche eines Sitzes
BE702130D BE702130A (xx) 1966-08-02 1967-07-31
BR191683/67A BR6791683D0 (pt) 1966-08-02 1967-07-31 Controle de cadeira
NL676710607A NL153076B (nl) 1966-08-02 1967-08-01 Inrichting voor het regelen van de kantelbeweging van een stoelzitting.
DK393367AA DK127316B (da) 1966-08-02 1967-08-01 Mekanisme til regulering af den vippende bevægelse af et stolesæde.
ES1967139003U ES139003Y (es) 1966-08-02 1967-08-01 Un mecanismo de control para silla.
FR1548373D FR1548373A (xx) 1966-08-02 1967-08-01
FI672093A FI45077C (fi) 1966-08-02 1967-08-01 Kallistuslaite tuolinistuinta varten.
AT715067A AT284379B (de) 1966-08-02 1967-08-01 Schwenkeinrichtung für einen Stuhlsitz
CH1095067A CH482424A (de) 1966-08-02 1967-08-02 Drehstuhl mit einer Vorrichtung zum Verstellen der Höhe der Sitzfläche

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US569640A US3417956A (en) 1966-08-02 1966-08-02 Chair control

Publications (1)

Publication Number Publication Date
US3417956A true US3417956A (en) 1968-12-24

Family

ID=24276243

Family Applications (1)

Application Number Title Priority Date Filing Date
US569640A Expired - Lifetime US3417956A (en) 1966-08-02 1966-08-02 Chair control

Country Status (14)

Country Link
US (1) US3417956A (xx)
AT (1) AT284379B (xx)
BE (1) BE702130A (xx)
BR (1) BR6791683D0 (xx)
CH (1) CH482424A (xx)
DK (1) DK127316B (xx)
ES (1) ES139003Y (xx)
FI (1) FI45077C (xx)
FR (1) FR1548373A (xx)
GB (1) GB1160634A (xx)
GR (1) GR35177B (xx)
NL (1) NL153076B (xx)
NO (1) NO132376C (xx)
SE (1) SE348929B (xx)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3720396A (en) * 1971-09-27 1973-03-13 Collier Keyworth Co Tilt mechanism for chairs or the like
US3758157A (en) * 1971-09-20 1973-09-11 Steelcase Inc Chair
EP0149041A2 (en) * 1984-01-11 1985-07-24 Herman Miller, Inc. Chair tilt mechanism
US4889384A (en) * 1988-07-10 1989-12-26 Leggett & Platt, Incorporated Knee-action chair control
WO1991001663A1 (en) * 1989-08-04 1991-02-21 Kairos S.R.L. Support device for the seat of armchairs or the like with automatically controlled inclination
EP0592009A1 (en) * 1989-03-01 1994-04-13 Herman Miller, Inc. Chair height and tilt adjustment mechanisms
US5601337A (en) * 1993-07-27 1997-02-11 Uchida Yoko Co., Ltd. Chair
US20040130196A1 (en) * 2002-12-31 2004-07-08 Metalseat Srl Device for the adjustment of the compression force of the spring in an articulation for a chair
US20060097558A1 (en) * 2004-11-09 2006-05-11 Girsberger Holding Ag Chair
US20140300158A1 (en) * 2011-07-01 2014-10-09 Mark Grant Jones Tilt mechanism for a chair and chair
US9458905B2 (en) 2012-09-20 2016-10-04 Steelcase Inc. Spring assembly and method
CN106889799A (zh) * 2015-12-19 2017-06-27 永艺家具股份有限公司 一种转椅托盘
US10194746B2 (en) * 2016-06-28 2019-02-05 Posturite Limited Seat tilting mechanism with two springs
CN110996724A (zh) * 2017-06-09 2020-04-10 斯迪尔科斯公司 座椅装置和构造方法
US10765214B2 (en) * 2017-06-02 2020-09-08 Inventor Group Gmbh Guide spring for a seating device and sprung seating device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102846062B (zh) * 2012-08-17 2015-11-11 浙江大丰实业股份有限公司 一种可复位的移动旋转式座椅

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US398293A (en) * 1889-02-19 Office-chair
US1247625A (en) * 1915-02-04 1917-11-27 Harry W Bolens Chair-seat spider.
GB180474A (en) * 1921-03-21 1922-06-01 Alfred Howlett Improvements in or relating to adjustable chairs and the like
US2051043A (en) * 1934-06-22 1936-08-18 Bassick Co Chair iron
DE883410C (de) * 1950-08-17 1953-07-16 Wilhelm Mankowski Federnde Fahrradsattelstuetze
US3220688A (en) * 1963-08-21 1965-11-30 Walter P Baermann Tilt and swivel mechanism for chairs

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US398293A (en) * 1889-02-19 Office-chair
US1247625A (en) * 1915-02-04 1917-11-27 Harry W Bolens Chair-seat spider.
GB180474A (en) * 1921-03-21 1922-06-01 Alfred Howlett Improvements in or relating to adjustable chairs and the like
US2051043A (en) * 1934-06-22 1936-08-18 Bassick Co Chair iron
DE883410C (de) * 1950-08-17 1953-07-16 Wilhelm Mankowski Federnde Fahrradsattelstuetze
US3220688A (en) * 1963-08-21 1965-11-30 Walter P Baermann Tilt and swivel mechanism for chairs

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3758157A (en) * 1971-09-20 1973-09-11 Steelcase Inc Chair
US3720396A (en) * 1971-09-27 1973-03-13 Collier Keyworth Co Tilt mechanism for chairs or the like
EP0149041A2 (en) * 1984-01-11 1985-07-24 Herman Miller, Inc. Chair tilt mechanism
EP0149041A3 (en) * 1984-01-11 1986-05-07 Herman Miller, Inc. Chair tilt mechanism
US4889384A (en) * 1988-07-10 1989-12-26 Leggett & Platt, Incorporated Knee-action chair control
EP0592009A1 (en) * 1989-03-01 1994-04-13 Herman Miller, Inc. Chair height and tilt adjustment mechanisms
WO1991001663A1 (en) * 1989-08-04 1991-02-21 Kairos S.R.L. Support device for the seat of armchairs or the like with automatically controlled inclination
US5601337A (en) * 1993-07-27 1997-02-11 Uchida Yoko Co., Ltd. Chair
US7125078B2 (en) * 2002-12-31 2006-10-24 Metalseat Srl Device for the adjustment of the compression force of the spring in an articulation for a chair
US20040130196A1 (en) * 2002-12-31 2004-07-08 Metalseat Srl Device for the adjustment of the compression force of the spring in an articulation for a chair
US20060097558A1 (en) * 2004-11-09 2006-05-11 Girsberger Holding Ag Chair
US7490902B2 (en) * 2004-11-09 2009-02-17 Girsberger Holding Ag Chair
US20140300158A1 (en) * 2011-07-01 2014-10-09 Mark Grant Jones Tilt mechanism for a chair and chair
US9277821B2 (en) * 2011-07-01 2016-03-08 L&P Property Management Company Tilt mechanism for a chair and chair
US9458905B2 (en) 2012-09-20 2016-10-04 Steelcase Inc. Spring assembly and method
CN106889799A (zh) * 2015-12-19 2017-06-27 永艺家具股份有限公司 一种转椅托盘
CN106889799B (zh) * 2015-12-19 2023-08-11 永艺家具股份有限公司 一种转椅托盘
US10194746B2 (en) * 2016-06-28 2019-02-05 Posturite Limited Seat tilting mechanism with two springs
US10765214B2 (en) * 2017-06-02 2020-09-08 Inventor Group Gmbh Guide spring for a seating device and sprung seating device
CN110996724A (zh) * 2017-06-09 2020-04-10 斯迪尔科斯公司 座椅装置和构造方法
CN110996724B (zh) * 2017-06-09 2023-09-22 斯迪尔科斯公司 座椅装置和构造方法

Also Published As

Publication number Publication date
BE702130A (xx) 1968-01-31
NL153076B (nl) 1977-05-16
ES139003U (es) 1969-01-01
FI45077B (xx) 1971-11-30
AT284379B (de) 1970-09-10
BR6791683D0 (pt) 1973-04-19
NO132376C (xx) 1975-11-05
CH482424A (de) 1969-12-15
NO132376B (xx) 1975-07-28
GR35177B (el) 1968-08-22
ES139003Y (es) 1969-11-01
FI45077C (fi) 1972-03-10
DK127316B (da) 1973-10-22
FR1548373A (xx) 1968-12-06
SE348929B (xx) 1972-09-18
DE1654284A1 (de) 1971-03-11
DE1654284B2 (de) 1976-01-15
NL6710607A (xx) 1968-02-05
GB1160634A (en) 1969-08-06

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