US3817575A - Rotary chair - Google Patents

Rotary chair Download PDF

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Publication number
US3817575A
US3817575A US00323594A US32359473A US3817575A US 3817575 A US3817575 A US 3817575A US 00323594 A US00323594 A US 00323594A US 32359473 A US32359473 A US 32359473A US 3817575 A US3817575 A US 3817575A
Authority
US
United States
Prior art keywords
shell
seat
actuating portion
gas spring
lower shell
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
US00323594A
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English (en)
Inventor
K Bocksch
W Hensel
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.)
Mauser KG
Original Assignee
Mauser KG
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 Mauser KG filed Critical Mauser KG
Application granted granted Critical
Publication of US3817575A publication Critical patent/US3817575A/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
    • 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
    • A47C3/02—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—Supports for the head or the back
    • A47C7/40—Supports for the head or the back for the back
    • A47C7/44—Supports for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
    • A47C7/446—Supports for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with fluid springs

Definitions

  • transmission linkages one of which operates the valves of the gas spring and the other of which effects tiltable displacement of a backrest unit mounted on the seat.
  • Pushbuttons are accessible at the exterior lower side of the lower shell and are connected with the linkages so as to operate the same when depressed.
  • the present invention relates generally to a rotary chair, and more particularly to a spring-loaded rotary chair.
  • Rotary chairs are known, as are spring-loaded rotary chairs. They are usually used in offices and for other business purposes, but are not entirely unknown for domestic use. It is known to provide such rotary chairs with a base from which an upright support column extends, provided on its upper end with a conical seat which engages with a cooperating conical seat provided on a seat unit that can thus be readily removably connected with and disconnected from the'upright support column.
  • the support column itself is telescopable for which purpose aso-called gas spring is arranged in its interior whereby to increase or decrease the height of the telescopable upright support column and thereby of the chair. It is also known to mount a backrest support on the seat unit so that its angle of inclination can be varied, for which purpose a second gas spring is provided which operates upon the backrest support.
  • the advantageof this type of chair is that the spring support and the adjustability of the chair height can be effected by a single operating unit, and that all components can be constructed as a compact assembly unit having an activating rod for the valve of the respective gas spring which is connected with a pivotable journal mounted for instance in the interior of the telescopable upright support.
  • Another object of the invention is to provide such a chair which is simple in its construction and reliable in its operation.
  • Another important object of the invention is to provide such a chair in which all components of the transmission linkages which activate the gas springs of the chair are invisible and are protected in the interior of the chair, being so arranged that they can be displaced in only one direction, namely the proper direction required for activating them.
  • a rotary chair having an upright support column provided with an internally arranged gas spring device controlled by valve means
  • a combination which comprises a seat including a lower supporting shell and an upper shell connected with the lower shell and adapted to be provided with upholstery.
  • the shells define an internal space with one another.
  • a backrest mounting unit is tiltably secured to the seat. Transmisoperative for acting upon the valve pins and the mounting units respectively, so as to operate the gas spring and effect tilting of the unit, respectively.
  • Pushbuttons are provided, being accessible at the exterior of the lower shell and operatively connected with the aforementioned linkages for operating the same when depressed by the user.
  • the seat has mounted on it, as already pointed out, a bracket mounting unit, which in turn is composed of two shell sections which are provided with openings into which a carrier of the actual backrest can be inserted. Theyscan be drawn towards one another to clamp this carrier by providing an appropriate screw, and the unit is located eccentrically on a pin which is provided on the lower shell of the seat.
  • a secondary gas spring has a piston rod which is connected to a mounting portion of the lower shell, and a cylinder which is articulated to the mounting unit below the centrally located screw which draws the shell sections thereof together. The reversal of the direction of movement of the pushbutton-operated rod of the linkage associated with the secondary gas. spring, in order to operate the valve pinof the gas spring, is effected via a pivotably mounted lever located in the interior of the seat.
  • FIG. 1 is a partially sectioned side-elevational view of a seat of a chair according to the present invention.
  • FIG. 2 is a section taken on line A-B of FIG. 3, showing the seat of FIG. 1 in section;
  • FIG. 3 is a top-plan view of the seat of FIGS. 1 and 2 with the upper shell removed;
  • FIG. 4 is a section taken on line C-D of FIG. 3.
  • FIGS. 1-4 illustrate one embodiment of the invention.
  • the seat will be seen to have a lower supporting shell 1 having a projection 6 in which a conical journal or seat 24 is provided which is to be pushed onto the conical upper end portion 15 of a telescopable upright support of the chair (see FIG. 2).
  • the lower end of the support column in conventional manner is provided with a base which holds the chair stable but which has not been illustrated.
  • a gas spring which is known per se to those skilled in the art and therefore has not been illustrated; the valve pin 14 of the gas spring, which operates the valve in the piston of the gas spring, extends upwardly out of the upper end 15.
  • the upper shell 2 is to be provided with the upholstery for the seat and is clampingly engaged with the lower shell 1 as illustrated.
  • the shells are connected by the elements 26 which extend through the openings 27 in the shell 1.
  • the underside of the upper shell 2 is supported on the radially extending reinforcing ribs 7 provided on the upper or inner side of the lower shell 1, so that a space is defined between the two shells.
  • the upper side of the shell 2 carries the upholstery 3.
  • pushbuttons 4 and 5 which extend downwardly below the underside of the shell 1 so as to be engageable by the fingers of a user. Also located in the space are transmission rods 8 and 9 of linkages which are to activate the pins 14 of the valve associated with the gas spring in the upright support column on the one hand, and the similar pins 12 of a gas spring 13 which is also located in the space between the two shells 1 and 2 and is to change the inclination of the backrest mounting unit 18 which is pivotably connected with the lower shell 1.
  • the pushbutton 4 displaces the rod 9, and in order to change the direction of movement imparted to the rod 9 and to act upon the valve pin 12 there is provided a pivotable lever 10 which is pivotably mounted in the support 11.
  • the piston rod of the gas spring 13 whose cylinder is articulately connected to a transverse bolt 17 of the mounting unit 18.
  • the latter is of two shell sections 19 and 20, as the drawing shows, and provided with a screw 23 which draws the shell sections 19 and 20 together. Openings 21 are provided in the shell sections for insertion of a carrier (not shown) at the upper end of wh ch is to carry the actual backrest.
  • a carrier not shown
  • a bolt 16 or pin 16 is provided which eccentrically journals the mounting unit 18 on the lower shell 1.
  • the gas spring 13 is articulated to the bolt 17 as pointed out before, and the latter is located beneath the screw 23.
  • operation of the gas spring 13 via the pin 12 will cause a change in the angular inclination of the unit 13 and thereby of the backrest.
  • expansion springs 25 which permanently tend to displace the rods 8 and 9 to their normal or rest position when the pushbuttons are not depressed.
  • Gas springs of the type mentioned herein are essentially constructed and operative in the manner of fluidactuated shock absorbers, from which they differ in that valve means provided in the piston permits the movement of the piston to be blocked and unblocked at will.
  • a combination comprising a seat including a lower supporting shell and an upper shell connected with said lower shell and adapted to be provided with upholstery, said shells defining an internal space with one another; a backrest mounting unit tiltably secured to said seat and having a second actuating portion movable between one position in which said backrest unit can tilt, and another position in which said backrest unit is prevented from tilting; a pair of pushbuttons mounted on said lower shell and accessible at the exterior thereof for depressing by a user; first motion-transmitting means arranged in said space be tween said shells and operatively associated with said first actuating portion and with one of said pushbuttons for displacing the former to said valve operating position in response to depressing of said one pushbutton; and second motion-transmitting means also arranged in said space between said shells
  • said mounting unit including two shell sections, central screw means for drawing said shell sections together, and a pin mounted on said lower shell and eccentrically connected with said unit.
  • MOUSER KOMMANDIT-GESELLSCHAFT is corrected to read MAUSER KOMMANDIT-GESELLSCHAFT Signed and sealed this 26th day of November 1974.

Landscapes

  • Chairs Characterized By Structure (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
US00323594A 1972-01-18 1973-01-17 Rotary chair Expired - Lifetime US3817575A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2202107A DE2202107C3 (de) 1972-01-18 1972-01-18 Federnder Drehsessel

Publications (1)

Publication Number Publication Date
US3817575A true US3817575A (en) 1974-06-18

Family

ID=5833235

Family Applications (1)

Application Number Title Priority Date Filing Date
US00323594A Expired - Lifetime US3817575A (en) 1972-01-18 1973-01-17 Rotary chair

Country Status (13)

Country Link
US (1) US3817575A (enrdf_load_stackoverflow)
JP (1) JPS4881661A (enrdf_load_stackoverflow)
AT (1) AT317479B (enrdf_load_stackoverflow)
BE (1) BE792743A (enrdf_load_stackoverflow)
BR (1) BR7300394D0 (enrdf_load_stackoverflow)
CA (1) CA987222A (enrdf_load_stackoverflow)
CH (1) CH543869A (enrdf_load_stackoverflow)
DE (1) DE2202107C3 (enrdf_load_stackoverflow)
FR (1) FR2250273A5 (enrdf_load_stackoverflow)
GB (1) GB1371012A (enrdf_load_stackoverflow)
IT (1) IT973051B (enrdf_load_stackoverflow)
NL (1) NL7300434A (enrdf_load_stackoverflow)
SE (1) SE378062B (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3880465A (en) * 1972-05-17 1975-04-29 Stabilus Gmbh Seat of adjustable height having an adjustable back
US4200332A (en) * 1977-07-23 1980-04-29 Protoned B.V. Adjustable chair
US4662681A (en) * 1983-09-07 1987-05-05 Paolo Favaretto Adjustable chair
US4916968A (en) * 1987-05-15 1990-04-17 Okamura Corporation Device for mounting an operating lever for a gas spring
US20040000805A1 (en) * 2000-05-22 2004-01-01 Herman Miller, Inc. Office chair
US20100187882A1 (en) * 2009-01-23 2010-07-29 Chen Yung-Hua Integrally formed base arrangement of an office chair
IT202000023551A1 (it) * 2020-10-06 2022-04-06 F Lli Rossetto S R L Poltrona con dispositivo per regolare l’elevazione e la reclinazione

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6320352Y2 (enrdf_load_stackoverflow) * 1980-05-27 1988-06-06
US4775187A (en) * 1985-03-11 1988-10-04 Herr Richard W Folding boat chair
AT386517B (de) * 1987-02-10 1988-09-12 Zuend & Co Ag K Stuhl, insbesondere arbeitsstuhl
ITUD930224A1 (it) * 1993-11-10 1995-05-10 Ta Srl De Sedia dattilo per ufficio a colonna girevole con basamento a raggiera su rotelle

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US659089A (en) * 1900-02-03 1900-10-02 George Bester Mckinney Stool.
US3111343A (en) * 1961-05-12 1963-11-19 Knoll Associates Chair adjustment mechanism
US3722954A (en) * 1970-07-13 1973-03-27 Sebel Ltd Upholstered furniture

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US659089A (en) * 1900-02-03 1900-10-02 George Bester Mckinney Stool.
US3111343A (en) * 1961-05-12 1963-11-19 Knoll Associates Chair adjustment mechanism
US3722954A (en) * 1970-07-13 1973-03-27 Sebel Ltd Upholstered furniture

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3880465A (en) * 1972-05-17 1975-04-29 Stabilus Gmbh Seat of adjustable height having an adjustable back
US4200332A (en) * 1977-07-23 1980-04-29 Protoned B.V. Adjustable chair
US4662681A (en) * 1983-09-07 1987-05-05 Paolo Favaretto Adjustable chair
US4916968A (en) * 1987-05-15 1990-04-17 Okamura Corporation Device for mounting an operating lever for a gas spring
US20040000805A1 (en) * 2000-05-22 2004-01-01 Herman Miller, Inc. Office chair
US6758523B2 (en) 2000-05-22 2004-07-06 Herman Miller, Inc. Office chair
US20100187882A1 (en) * 2009-01-23 2010-07-29 Chen Yung-Hua Integrally formed base arrangement of an office chair
US7887138B2 (en) * 2009-01-23 2011-02-15 Chen Yung-Hua Integrally formed base arrangement of an office chair
IT202000023551A1 (it) * 2020-10-06 2022-04-06 F Lli Rossetto S R L Poltrona con dispositivo per regolare l’elevazione e la reclinazione

Also Published As

Publication number Publication date
GB1371012A (en) 1974-10-23
IT973051B (it) 1974-06-10
NL7300434A (enrdf_load_stackoverflow) 1973-07-20
SE378062B (enrdf_load_stackoverflow) 1975-08-18
CA987222A (en) 1976-04-13
BE792743A (fr) 1973-03-30
JPS4881661A (enrdf_load_stackoverflow) 1973-11-01
DE2202107C3 (de) 1974-08-01
BR7300394D0 (pt) 1973-10-25
DE2202107B2 (de) 1974-01-03
FR2250273A5 (enrdf_load_stackoverflow) 1975-05-30
AT317479B (de) 1974-08-26
CH543869A (de) 1973-11-15
DE2202107A1 (de) 1973-08-09

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