US3148855A - Chair base - Google Patents

Chair base Download PDF

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US3148855A
US3148855A US162089A US16208961A US3148855A US 3148855 A US3148855 A US 3148855A US 162089 A US162089 A US 162089A US 16208961 A US16208961 A US 16208961A US 3148855 A US3148855 A US 3148855A
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arms
members
pair
legs
stretches
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US162089A
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Earl F Hamilton
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Hamilton Cosco Inc
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Hamilton Cosco Inc
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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
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/002—Chair or stool bases
    • A47C7/004—Chair or stool bases for chairs or stools with central column, e.g. office 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
    • A47C3/20—Chairs or stools with vertically-adjustable seats
    • A47C3/24—Chairs or stools with vertically-adjustable seats with vertical spindle

Definitions

  • This invention relates to an article of furniture, and more particularly to a chair base adapted to be used in association with a swivel-type chair.
  • a chair base having a plurality of outwardly projecting, generally horizontal legs.
  • Each of said legs is formed from a pair of channeled interfitting arms on a pair of bifurcated members.
  • Each of the arms on each of said bifurcated members is rigidly connected to one of the arms on each of a pair of adjacent members to thus rigidly interconnect each of said legs.
  • the apex of the interconnection of the arms on each of said members is spaced from the apexes of the other members to define a vertically extending opening at the center of the base in which an upwardly projecting chair-supporting rod is received.
  • each of the legs portions of the interfitting arms defining said leg project outwardly from the remaining portions of said arms and arerigidly joined together, whereby the space between said portions of the arms rigidly joined together and the ends of the remaining portions of said arms define a vertically extending caster spindle socket in order that the chair base may be supported upon a plurality of groundengageable casters.
  • FIG. 1 is a side elevation of a swivel chair having a base embodying my invention
  • FIG. 2 is a horizontal section taken on the line 2--2 of FIG. 1, but with portions thereof being broken away;
  • FIG. 3 is a fragmentary enlarged section taken on the line 3+3 of FIG. 2;
  • FIG. 4 is an enlarged vertical section taken on the line' 44 of FIG. 2;
  • FIG. 5 is a vertical section taken on the line 5-5 of FIG. 3, but with portions thereof being broken away;
  • each of the legs 18 is formed from a pair of interfitting arms of a pair of the bifurcated members 20 and 22, and each of said legs is interconnected to its two adjacent legs.
  • the lower stretches 27 on the members 20 underlie the stretches 27 of the members 22, and are provided with a plurality of longitudinally spaced tabs 28 lockingly received in a plurality of openings 29 formed in the stretches 27.
  • the stretches 26 on the members 20 overlie the stretches 26 on the members 22, and are provided with a plurality ,of longitudinally spaced openings 30 in which a plurality of tabs 31 formed on the stretches 26 are lockingly received.
  • a plurality of projections 33 are formed on the stretches 26, with the upper faces of said projections being generally coplanar with the upper faces of the tabs 31.
  • the webs 25 and 25' project outwardly beyond the ends of their respective horizontal stretches 26-27 and 26'-27', and are bent inwardly, as at 32, and rigidly joined together as by a weld seam 34.
  • the space between the. curved ends 32 of the webs 25' and 25' and the ends of the horizontal stretches 26-27 and 2627 defines at the end of each of the legs 18 a vertically extending caster swivel socket in which a bearing sleeve 35 maybe rigidly mounted-asby welding.
  • the sleeve 35 is adapted to receive the spindle 36 of a groundengageable caster 37 supporting the chair base in an elevatedposition, Conveniently, the spindle 36 may have an annular groove in which a compressible ring 39 is carried to thus retain said spindle in the bearing'sleeve 35.
  • a bumper 40 Disposed over the remote end of each of the base legs 18 is a bumper 40 having a top portion41 extending over the open upper end of the caster spindle socket and an end shown in FIG. 1, such a chair may comprise a seat 10 to I which back supports 12 are connected for supporting a back rest 14 .in an elevated position above and to the rear of-said seat.
  • the chair is supported on a vertically extending swivel rod 16 operatively connected to the seat 10 and extending downwardly therefrom for connection to my chair base.
  • the chair base comprises four outwardly projecting generally However, it is to be understood, that my chair base may have any desired number of such outwardly projecting legs.
  • the base legs 18 are formed from two pairs of opposed bifurcated members 20 and 22.
  • Each of portion 42 disposed around the interconnection 34 of the ends 32 of the arm webs 25 and 25.
  • Integrally connected to the top and end portions 41 and 42 of the .bumper 40' is .a pair of side walls 44 extending inwardly over the webs 25 and 25' and provided with inwardly projecting bosses 46 press-fit in openings formed in the webs 25 and 25 to thus releasably mount the bumper 40 on the arm '18.
  • a kick plate 48 Mounted on the upper face of each of the legs 18, conveniently by a press-fit, is a kick plate 48 having an inverted generally U-shaped configuration. As shown in FIG. 4, the upper faces of the tabs 31 and projections 33 are generally "coplanar and engage the web of the kick plate 48 to support it in a level horizontal position. Conveniently, the kick plates extend from the apexes of the bifurcated members 20 and 22 to points adjacent the remote ends of the legs 18 formedby said members, with the outer ends of said kick plates being received under the top portions 41 of the bumpers 40.
  • each of the bifurcated members 20 and 22 is curved, as at 50, and is spaced from the apexes of the other members, whereby said members define a pair of horizontally spaced vertically aligned openings at the center of the chair base.
  • a plate 52 Disposed within the chair base is a plate 52 having a plurality of arms projecting outwardly into each of the base legs 18 and rigidly secured to the stretches 27 and 27' by a plurality of rivets 53 to cross-brace the members 29 and 22 and act in combination with the tabs 28 and 31 and the weld seams 34 to rigidly connect said members, As shown, the plate 52 is provided with an opening disposed in alignment with the openings formed by edges 56 of said members 20 and 22,.
  • a sleeve 54 Rigidly secured to the opening in the plate 52, as by welding or any suitable mechanical means, is a sleeve 54 projecting above and below the base legs 13 and carrying the swivel rod 16, said sleeve being provided with a key 55 received in a vertically extendingslot formed in the swivel rod 16.
  • the upper end of the sleeve 54 has an annular outwardly projecting flange 56 upon which a pair of washers S and 57 are carried, the washer 57 having an inwardly extending key 59 received in said vertically extending slot in the swivel rod 16.
  • the washer 57 supports a cap 60 having an axially extending opening in which the swivel rod 16 is threadably received.
  • An inverted cup 62 is disposed over the upper end of the sleeve 54, and is provided with an opening, the edges of which are received in an annular groove 63 formed in the outer face of the cap 60.
  • a pair of screws 64 are mounted in the vertically extending cup side walls to engage the lower face of the sleeve flange 56, whereby said screws 64 and the edges of the cup received in the groove 63 retain the cup 62 in operative position on the upper end of the sleeve 54.
  • each of said legs comprising a pair of interfitting channeled arms on a pair of bifurcated members
  • said members defining a pair of aligned vertically spaced openings at the center of said base for the reception of an upwardly projecting chair-supporting rod.
  • each of said legs being formed from a pair of interfitting rigidly connected arms on a pair of adjacent bifurcated members, i
  • each'of said arms has a vertically extending web interconnecting a pair of generally horizontal stretches which are rigidly connected to the stretches of the adjacent arm of an adjacent member, and
  • each of said legs being formed'frorn a pair of interfitting rigidly connected arms on a pair of adjacent bifurcated members
  • each of said arms including a vertically extendin web interconnecting generally horizontal upper and lower stretches with the stretches on one of said pair of arms abutting the stretches on the other of said pair of arms in face-to-face relationship,
  • each of said legs being formed from a pair of interfitting arms on a pair of bifurcated members
  • each of said arms including a vertical webinterconnecting upper and lower horizontal stretches abutting the upper and lower stretches of the adjacent arm on an adjacent member in face-to-face relationship,
  • said bumper having an end portion disposed, over the connection of said webs, a top portion disposed over the upper end of said caster spindle socket, and a pair of side portions having inwardly directed projections received in openings formed in said webs for mounting the bumper on said leg.
  • each of said legs comprising ng a pair of interfitting channeled arms on a pair of bifurcated members, (0) each of said arms including a vertically extending web interconnecting generally horizontal upper and lower stretches with the stretches on one of said pair of arms abutting the stretches on the other of said pair of arms in face-to-face relationship,
  • each of said legs comprising a pair of interfitting channeled arms on a pair of bifurcated members
  • said members defining a pair of aligned vertically extending openings at the center of said base

Landscapes

  • Chair Legs, Seat Parts, And Backrests (AREA)

Description

Filed Dec. 26, 1961 E. F. HAMILTON CHAIR BASE Sept. 15, 1964 3,148,855
2 Sheets-Sheet 1 INVENTOR. 924 FAQ/ mm,
p 15,1954 E. F. HAMILTQN 3,148,855
CHAIR BASE Filed Dec. 26, 1961 2 Sheets-Sheet 2 INVENTOR. BY Z7251, F/h/v/Lmn;
flrmemeys.
' horizontal legs 18.
United States Patent 3,148,855 CHAIR BAE Earl F. Hamilton, Columbus, Ind, assignor to Hamilton Cosc'o, Inn, Columbus, Ind, a corporation of Indiana Filed Dec. 26, 1961, Ser. No. 162,089 10 Claims. (Cl. 248-1881) This invention relates to an article of furniture, and more particularly to a chair base adapted to be used in association with a swivel-type chair.
It is an object of the invention to provide a chair base which can be economically manufactured largely from inexpensive sheet-metal stampings, which is adapted to support a chair-supporting 'swivel rod and a plurality of ground-engaging casters, and which will have an attractive appearance, yet prove sturdy and durable in use.
In accordance with the preferred form of my invention, there is provided a chair base having a plurality of outwardly projecting, generally horizontal legs. Each of said legs is formed from a pair of channeled interfitting arms on a pair of bifurcated members. Each of the arms on each of said bifurcated members is rigidly connected to one of the arms on each of a pair of adjacent members to thus rigidly interconnect each of said legs. The apex of the interconnection of the arms on each of said members is spaced from the apexes of the other members to define a vertically extending opening at the center of the base in which an upwardly projecting chair-supporting rod is received. At the remote ends of each of the legs portions of the interfitting arms defining said leg project outwardly from the remaining portions of said arms and arerigidly joined together, whereby the space between said portions of the arms rigidly joined together and the ends of the remaining portions of said arms define a vertically extending caster spindle socket in order that the chair base may be supported upon a plurality of groundengageable casters.
Other objects and features of the invention will become apparent from the more detailed description which follows and from the accompanying drawings, in which:
FIG. 1 is a side elevation of a swivel chair having a base embodying my invention;
FIG. 2 is a horizontal section taken on the line 2--2 of FIG. 1, but with portions thereof being broken away;
FIG. 3 is a fragmentary enlarged section taken on the line 3+3 of FIG. 2;
FIG. 4 is an enlarged vertical section taken on the line' 44 of FIG. 2;
FIG. 5 is a vertical section taken on the line 5-5 of FIG. 3, but with portions thereof being broken away;
3,148,855 Patented Sept. 15,, 1964 ice said members has a pair of arms disposed at right angles to each other and provided with channeled cross-sections. Each arm on the members 20 is formed from a vertically extending web 25 interconnecting parallel, horizontal upper and lower stretches 26 and 27, and each arm on the members 22 is likewise formed from a vertically ex tending web 25' interconnecting horizontal upper and lower stretches 26 and 27'. The webs 25 and 25' have the same height to permit the horizontal stretches 26 and 27 on the arms of the members 20 to be disposed in overlapping abutting engagement with the stretches 26' and 27' on the arms of a pair of adjacent members 22, as shown in FIGS. 4 and 5. In this manner, each of the legs 18 is formed from a pair of interfitting arms of a pair of the bifurcated members 20 and 22, and each of said legs is interconnected to its two adjacent legs.
To interconnect the interfitting pairs of arms, the lower stretches 27 on the members 20 underlie the stretches 27 of the members 22, and are provided with a plurality of longitudinally spaced tabs 28 lockingly received in a plurality of openings 29 formed in the stretches 27. Similarly, the stretches 26 on the members 20 overlie the stretches 26 on the members 22, and are provided with a plurality ,of longitudinally spaced openings 30 in which a plurality of tabs 31 formed on the stretches 26 are lockingly received. For reasons that will become apparent hereinafter, a plurality of projections 33 are formed on the stretches 26, with the upper faces of said projections being generally coplanar with the upper faces of the tabs 31.
As shown in FIGS. 6 and 7, the webs 25 and 25' project outwardly beyond the ends of their respective horizontal stretches 26-27 and 26'-27', and are bent inwardly, as at 32, and rigidly joined together as by a weld seam 34. Thus, the space between the. curved ends 32 of the webs 25' and 25' and the ends of the horizontal stretches 26-27 and 2627 defines at the end of each of the legs 18 a vertically extending caster swivel socket in which a bearing sleeve 35 maybe rigidly mounted-asby welding. The sleeve 35 is adapted to receive the spindle 36 of a groundengageable caster 37 supporting the chair base in an elevatedposition, Conveniently, the spindle 36 may have an annular groove in which a compressible ring 39 is carried to thus retain said spindle in the bearing'sleeve 35. e
Disposed over the remote end of each of the base legs 18 is a bumper 40 having a top portion41 extending over the open upper end of the caster spindle socket and an end shown in FIG. 1, such a chair may comprise a seat 10 to I which back supports 12 are connected for supporting a back rest 14 .in an elevated position above and to the rear of-said seat. The chair is supported on a vertically extending swivel rod 16 operatively connected to the seat 10 and extending downwardly therefrom for connection to my chair base.
In the illustrated embodiment of my invention, the chair base comprises four outwardly projecting generally However, it is to be understood, that my chair base may have any desired number of such outwardly projecting legs.
As shown, the base legs 18 are formed from two pairs of opposed bifurcated members 20 and 22. Each of portion 42 disposed around the interconnection 34 of the ends 32 of the arm webs 25 and 25. Integrally connected to the top and end portions 41 and 42 of the .bumper 40' is .a pair of side walls 44 extending inwardly over the webs 25 and 25' and provided with inwardly projecting bosses 46 press-fit in openings formed in the webs 25 and 25 to thus releasably mount the bumper 40 on the arm '18.
Mounted on the upper face of each of the legs 18, conveniently by a press-fit, is a kick plate 48 having an inverted generally U-shaped configuration. As shown in FIG. 4, the upper faces of the tabs 31 and projections 33 are generally "coplanar and engage the web of the kick plate 48 to support it in a level horizontal position. Conveniently, the kick plates extend from the apexes of the bifurcated members 20 and 22 to points adjacent the remote ends of the legs 18 formedby said members, with the outer ends of said kick plates being received under the top portions 41 of the bumpers 40.
As shown in FIG. 5, the inner, edge of the apex of each of the bifurcated members 20 and 22 is curved, as at 50, and is spaced from the apexes of the other members, whereby said members define a pair of horizontally spaced vertically aligned openings at the center of the chair base.
base. Disposed within the chair base is a plate 52 having a plurality of arms projecting outwardly into each of the base legs 18 and rigidly secured to the stretches 27 and 27' by a plurality of rivets 53 to cross-brace the members 29 and 22 and act in combination with the tabs 28 and 31 and the weld seams 34 to rigidly connect said members, As shown, the plate 52 is provided with an opening disposed in alignment with the openings formed by edges 56 of said members 20 and 22,.
Rigidly secured to the opening in the plate 52, as by welding or any suitable mechanical means, is a sleeve 54 projecting above and below the base legs 13 and carrying the swivel rod 16, said sleeve being provided with a key 55 received in a vertically extendingslot formed in the swivel rod 16. The upper end of the sleeve 54 has an annular outwardly projecting flange 56 upon which a pair of washers S and 57 are carried, the washer 57 having an inwardly extending key 59 received in said vertically extending slot in the swivel rod 16. The washer 57 supports a cap 60 having an axially extending opening in which the swivel rod 16 is threadably received. An inverted cup 62 is disposed over the upper end of the sleeve 54, and is provided with an opening, the edges of which are received in an annular groove 63 formed in the outer face of the cap 60. A pair of screws 64 are mounted in the vertically extending cup side walls to engage the lower face of the sleeve flange 56, whereby said screws 64 and the edges of the cup received in the groove 63 retain the cup 62 in operative position on the upper end of the sleeve 54. It will thus be apparent, that by rotating the cap 6% on the rod 16, said rod will be raised and lowered Within the sleeve 54 to effect at raising and lowering of the chair seat relative to the Conveniently, the engaging faces of the cap 60 and washer 57 are provided with mating projections and recesses (not shown) which serve as indexing means for the raising and lowering of said chair seat.
I claim:
1. In an article of furniture,
(a) a base having a plurality of outwardly projecting,
generally horizontal legs, j
(b) each of said legs comprising a pair of interfitting channeled arms on a pair of bifurcated members,
(c) means on each of said arms for rigidly connecting said arm to the arm with which it is interfit,
(d) the arms on each of said members being interfit with one of the arms on each of a pairof adjacent members, whereby all of said legs are rigidly interconnected, and
(e) said members defining a pair of aligned vertically spaced openings at the center of said base for the reception of an upwardly projecting chair-supporting rod.
2. The invention as set forth in claim 1 with the addition that a (a) a vertically extending opening is formed. in said members at each of said legs adjacent the remote end thereof, and r (b) the upwardly projecting spindle of a caster is rotatably received in said opening.
3. In an article of furniture,
(a) a base having a plurality of outwardly projecting,
generally horizontal legs,
(b) each of said legs being formed from a pair of interfitting rigidly connected arms on a pair of adjacent bifurcated members, i
(c) the arms on each of said members being rigidly connected to one of the arms on each of a pair of adjacent members for rigidly interconnecting said plurality of legs, and
(d) the apex of the interconnection of the arms on each of said bifurcated members being spaced from the apexes of the other bifurcated members to define a vertically extending opening at the center a 43: of said base for the reception of an upwardly projecting chair-supporting rod;
4. The invention as set forth in claim 3 with the addition that (a) each'of said arms has a vertically extending web interconnecting a pair of generally horizontal stretches which are rigidly connected to the stretches of the adjacent arm of an adjacent member, and
(b) the webs on each pair of adjacent interfitting arms project outwardly beyond said horizontal stretches and are rigidly joined together at their ends, whereby the space between said stretches and the connected ends of said webs defines a vertically extending caster spindle socket.
5. In an article of furniture,
(a) a base having a plurality of outwardly projecting,
generally horizontal legs,
(12) each of said legs being formed'frorn a pair of interfitting rigidly connected arms on a pair of adjacent bifurcated members,
(0) each of said arms including a vertically extendin web interconnecting generally horizontal upper and lower stretches with the stretches on one of said pair of arms abutting the stretches on the other of said pair of arms in face-to-face relationship,
' (d) at least one of the stretches on each of said arms having tabs lockingly received in openings formed in stretches of the arm against which it abuts to rigidly connect each pair of said interfitting leg-forming arms,
(e) the arms on each of said members being rigidly connected to one of the arms on each of a pair of adjacent members for rigidly interconnecting said plurality of legs,
(f) the apex of the interconnection of the arms on each of said bifurcated members being spaced from theapexes of the other bifurcated members to define a vertically extending opening at the center of said base for the reception of an upwardly projecting chair-supporting rod, and
g) a plate rigidly connected to the abutting stretches of said members in each of said arms and having an opening disposed in alignment with said vertically extending opening for the reception of said chairsupporting rod 6. In an article of furniture,
(a) a base having a plurality of outwardly projecting,
generally horizontal legs, y
(b) each of said legs being formed from a pair of interfitting arms on a pair of bifurcated members,
(c) each of said arms including a vertical webinterconnecting upper and lower horizontal stretches abutting the upper and lower stretches of the adjacent arm on an adjacent member in face-to-face relationship,
(d) a plurality of longitudinallyspaced tabs formed on at least one of the stretches'in each pair of abutting stretches lockingly received in openings formed in the other stretch in said pair of abutting stretches,
to rigidly connect each of said members to the next adjacent member, (e) the apex of the interconnection of the arms on each of said bifurcated members being spaced from the apexes of the other bifurcated members to define a vertically extending opening at the center of said base for the reception of an upwardly projecting chair-supporting rod,
(f) a plate rigidly connected to the abutting stretches of. said members in each of said arms and having an opening disposed in alignment with said vertically extending opening for the reception of said chairsuppor'ting rod, and (g) the webs on each pair of interfitting arms projecting outwardly beyond said horizontal stretches and rigidly joined together, whereby the space between said stretches and the connected webs forms a vertically extending caster spindle socket.
7. The invention as set forth in claim 6 with the addition that (a) an elongated kick plate having an inverted U- shaped cross-section is mounted on each of said legs over said abutting upper arm stretches.
8. The invention as set forth in claim 6 with the addition that (a) a bumper is received over the outer end of each of said legs,
(b) said bumper having an end portion disposed, over the connection of said webs, a top portion disposed over the upper end of said caster spindle socket, and a pair of side portions having inwardly directed projections received in openings formed in said webs for mounting the bumper on said leg.
9. In an article of furniture,
(a) a base having a plurality of outwardly projecting,
generally horizontal legs,
(b) each of said legs compris ng a pair of interfitting channeled arms on a pair of bifurcated members, (0) each of said arms including a vertically extending web interconnecting generally horizontal upper and lower stretches with the stretches on one of said pair of arms abutting the stretches on the other of said pair of arms in face-to-face relationship,
(d) at least one of the stretches on each of said arms having tabs lockingly received in openings formed in stretches of the arm against which it abuts to rigidly connect each pair of said interfitting leg-forming arms, and
(e) a plate having a plurality of extensions projecting into said legs and rigidly connected to the stretches on said arms for cross-bracing and interconnecting said legs.
10. In an article of furniture,
(a) a base having a plurality of outwardly projecting,
generally horizontal legs,
(b) each of said legs comprising a pair of interfitting channeled arms on a pair of bifurcated members,
(0) means on each of said arms for rigidly connecting said arm to the arm with which it is interfit,
(d) the arms on each of said members being interfit with one of the arms on each of a pair of adjacent members, whereby all of said legs are rigidly interconnected,
(e) said members defining a pair of aligned vertically extending openings at the center of said base, and
(f) a vertically extending sleeve carried in said pair of openings and rigidly secured to said base, said sleeve being adapted to receive and support a vertically extending chair-supporting rod.
References Cited in the file of this patent UNITED STATES PATENTS 1,709,446 Travers Apr. 16, 1929 2,350,399 Jones June 6, 1944 2,732,157 Hamilton Jan. 24, 1956

Claims (1)

1. IN AN ARTICLE OF FURNITURE, (A) A BASE HAVING A PLURALITY OF OUTWARDLY PROJECTING GENERALLY HORIZONTAL LEGS, (B) EACH OF SAID LEGS COMPRISING A PAIR OF INTERFITTING CHANNELED ARMS ON A PAIR OF BIFURCATED MEMBERS, (C) MEANS ON EACH OF SAID ARMS FOR RIGIDLY CONNECTING SAID ARM TO THE ARM WITH WHICH IT IS INTERFIT, (D) THE ARMS ON EACH OF SAID MEMBERS BEING INTERFIT WITH ONE OF THE ARMS ON EACH OF A PAIR OF ADJACENT MEMBERS, WHEREBY ALL OF SAID LEGS ARE RIGIDLY INTERCONNECTED, AND
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3281105A (en) * 1965-08-18 1966-10-25 Corry Jamestown Corp Chair base
US3390421A (en) * 1966-01-04 1968-07-02 B L Marble Furniture Inc Chair base
US3705704A (en) * 1971-03-08 1972-12-12 Gen Fireproofing Co The Chair base
US3778014A (en) * 1971-07-26 1973-12-11 All Steel Equipment Inc Chair base swivel arrangement
US3994466A (en) * 1975-06-12 1976-11-30 Prentice Corporation Shroud for pedestal chair
US4053129A (en) * 1976-11-29 1977-10-11 Graff Vernon D Gliding chair system
US4412667A (en) * 1981-02-12 1983-11-01 Frank Doerner Leg for chair base and cap therefore
US4998699A (en) * 1989-12-21 1991-03-12 Butler Sandra F Chair bootie
US5906343A (en) * 1997-05-20 1999-05-25 Steelcase Inc. Chair base
US11589678B2 (en) 2019-01-17 2023-02-28 Hni Technologies Inc. Chairs including flexible frames

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1709446A (en) * 1927-08-31 1929-04-16 Gilson Mfg Co Base
US2350399A (en) * 1941-07-31 1944-06-06 Posture Res Corp Chair base
US2732157A (en) * 1956-01-24 hamilton

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2732157A (en) * 1956-01-24 hamilton
US1709446A (en) * 1927-08-31 1929-04-16 Gilson Mfg Co Base
US2350399A (en) * 1941-07-31 1944-06-06 Posture Res Corp Chair base

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3281105A (en) * 1965-08-18 1966-10-25 Corry Jamestown Corp Chair base
US3390421A (en) * 1966-01-04 1968-07-02 B L Marble Furniture Inc Chair base
US3705704A (en) * 1971-03-08 1972-12-12 Gen Fireproofing Co The Chair base
US3778014A (en) * 1971-07-26 1973-12-11 All Steel Equipment Inc Chair base swivel arrangement
US3994466A (en) * 1975-06-12 1976-11-30 Prentice Corporation Shroud for pedestal chair
US4053129A (en) * 1976-11-29 1977-10-11 Graff Vernon D Gliding chair system
US4412667A (en) * 1981-02-12 1983-11-01 Frank Doerner Leg for chair base and cap therefore
US4998699A (en) * 1989-12-21 1991-03-12 Butler Sandra F Chair bootie
US5906343A (en) * 1997-05-20 1999-05-25 Steelcase Inc. Chair base
US5964436A (en) * 1997-05-20 1999-10-12 Steelcase Inc. Chair base
US11589678B2 (en) 2019-01-17 2023-02-28 Hni Technologies Inc. Chairs including flexible frames
US12075921B2 (en) 2019-01-17 2024-09-03 Hni Technologies Inc. Chairs including flexible frames

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