US3008764A - Chair - Google Patents

Chair Download PDF

Info

Publication number
US3008764A
US3008764A US13348A US1334860A US3008764A US 3008764 A US3008764 A US 3008764A US 13348 A US13348 A US 13348A US 1334860 A US1334860 A US 1334860A US 3008764 A US3008764 A US 3008764A
Authority
US
United States
Prior art keywords
back rest
chair
support
members
resilient
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
US13348A
Inventor
John F Pile
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.)
MillerKnoll Inc
Original Assignee
Herman Miller Inc
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
Priority to CA644544A priority Critical patent/CA644544A/en
Application filed by Herman Miller Inc filed Critical Herman Miller Inc
Priority to US13348A priority patent/US3008764A/en
Application granted granted Critical
Publication of US3008764A publication Critical patent/US3008764A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B12/00—Jointing of furniture or the like, e.g. hidden from exterior
    • F16B12/40—Joints for furniture tubing
    • F16B12/42—Joints for furniture tubing connecting furniture tubing to non-tubular parts
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C5/00—Chairs of special materials
    • A47C5/04—Metal chairs, e.g. tubular
    • A47C5/06—Special adaptation of seat upholstery or fabric for attachment to tubular 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
    • A47C7/42—Support for the head or the back for the back of detachable or loose type
    • 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
    • A47C7/448—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with resilient blocks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S297/00—Chairs and seats
    • Y10S297/01—Foam

Definitions

  • This invention relates to furniture in general, and more particularly to a chair having a separable shock mount for securing the back rest member to the support structure of the chair.
  • the back rest for a chair usually includes some resilience to more comfortably support a persons back. Some chairs may have the back rest padded for such purpose. Other chairs may have the back rest formed to complement the contours of a persons back and have the back rest or its support include some resilience.-
  • the separable mount of this invention is intended to provide secure engagement of the parts with which it is used, and to withstand normal shocks received thereby.
  • the separable shock mount is intended to give way only under extreme conditions which might otherwise result in irreparable damage to the chair.
  • a further object of this invention is to disclose a shock resistant mount which is relatively inexpensive to manufacture and to incorporate into the construction of a chair or the like.
  • the mount proposed includes resilient blocks capable of being bonded to one member and formed to receive other members into engagement therewith.
  • the resilient members are formed to include a ball socket therein and are receptive of a ball headed member.
  • the socket is disengaged from the ball headed member only by a force twisting the member to which the socket is engaged through an angle just less than that which would cause irreparable damage if the separable mount were not provided.
  • This invention enables the back rest member of a chair to be separated from the support to which the back rest is engaged before any serious damage is -.done to either.
  • the back rest member is twisted through greater than the separable shock mount releases and disengages the back rest, from its support.
  • the mount is such as'will not give way except under the condition recited. Accordingly, the back rest is in all other re-' spects securely engaged to its support.
  • FIG. 1 is a perspective view of a chair including the separable shock mount of thisinvention to engage the back rest member to the support therefor.
  • FIG. 2 is an enlarged cross sectional view of the shock mount of this invention as normally disposed.
  • FIG. 3 is a enlarged cross sectional view of the shock mount of this invention as distorted in the relative twisting of the members to which it is engaged, and about to release such members from each other.
  • FIG. 4 is a detailed perspective view of the fixed portion of the shock mount of this invention. i
  • the chair 10, shown in FIG. 1, includes a seat'12 and back rest member 14.
  • Chair legs 16 and 18 support the seat member.
  • a back rest brace or support 20 extends from under the seat to support the back rest 14.
  • the back rest 14 is secured to the back rest support 20 by means of the separable shock mount 22 of this invention.
  • the separable shock mount 22 includes a pair of resil ient members 24 secured to theback of the back rest member 14.
  • a connector 26 is rigidly secured to the support 20 in any desired manner, such as by welding, bolting or riveting.
  • a pair of short stub'posts 28 project generally horizontally toward the back rest 14 from the connector 26, with which they are integrally formed. Thus, the stub posts 28 are rigidly held' in a horizontal position regardless of any movement of back rest 14.
  • the stub posts 28 have ball heads 30 formed on' the' ends thereof.
  • the back rest 14 is secured to the support 20 by the cooperative engagement of the posts of the connector 26 with the resilient members 24.
  • the resilient members 24 are each formed to a frustoconical shape and are made of a resilient material.
  • the physical characteristics of the resilient material are such as suits the needs hereinafter set forth.
  • the base 32 of the resilient members 24 is formed to include a projection 34.
  • the projection 34 is used to locate the mount on the back of the back rest 14.
  • An indentation 36 is formed in the back rest member to receive the projection 34 and locate the members 24 thereon.
  • An annular groove 38 is formed in the base of the resilient members to receive and retain the bonding agent used to secure the members 24 to the back rest 14.
  • the frusto-conical members 24 are formed to include a neck portion 40 at their smaller end.
  • a ball socket 42 is formed within the resilient members 24 and a passage 44 is formed through the neck portion 40 and in communication with the socket.
  • the neck portion 40 forms a retaining sleeve about the post part of the connector.
  • the back rest 14 is readily engaged to the back rest support 20 by forcing the ball headed posts 28 of connector 26 into engagement with the resilient members 24.
  • the ball ends 30 are snapped into the sockets 42 and the walls of passage 44 close tightly about the connector posts 28.
  • the resilient members 24 form a shock resistant mount due to the isolation of the back rest from the support and the spacing of the ball receiving socket 42 from the base of the mount.
  • the resilient nature of members 24 enables the back 3. rest 14 a reasonable degree of freedom to. position itself to conform to the angular disposition of a persons back as one sits in the chair 10. Accordingly, whether one sits straight, or leansback inthe chair 10, the back rest will assumea position to comfortably supportones back.
  • the resilient members 24 are. separable from the connector 26 by pulling the back rest 14 from the support 20 with a force. sufiicient to pop the ball heads 30. from the sockets; 42. Normally the two spaced members 24 will provide sufficient resistance to a force of this kind to prevent the. back rest from being separated from both members at the same time. However, a side twisting of the back rest 14 around the support 20 will cause one of the members to pop one of the connector posts.
  • This separation of the back rest from the'support is intended to occur just prior to the increase of such a' force to where it might otherwise cause serious damage tothechain.
  • a-twisting force applied to the back rests14, forcing it over the. support 20 will pop the resilient members 24 from the connector 26 after the back rest is forced just beyond a 90 position. This isbest'shown in FIG; 3.
  • the post 28 stretches: the passage 44 and bunchesthe body of the resilient member to one side thereof. 'This, forms a fulcrum. and provides. sufficient leverage for the post to pop the ball head 30' from the socketi42.
  • Th6? back rest 14 is easily re-engaged to the? support 20 by forcing the ball headed posts 28 into'the sockets 42. Quite naturally this separation and reassociation of parts is not an overly frequentoccurrence. However, the back rest may be resecured. to the support 20 as: often as it becomes forcibly separated: therefrom.
  • a chair comprising a seat, a supporting structure fixed with respect to said seat, a back'tiltably mounted with respect to said supporting structure, and means-ineluding, a rigid ball held in a resilient socket releasably connecting'said back to said supporting. structure, said means resiliently biasing saidback into a predetermined position, and said means being arranged to release said back from said structure when said back is tilted to a position substantiallynormal to said predetermined position.
  • a chair comprising a seat, a supporting structure fixed with respect to said seat, a back tiltably mounted with respect to said supporting'structure, and, means including a rigid ball held in a resilient socket releasably connecting said back to said supporting structure, said ball having a shank attached thereto, said shank being snugly embraced by a portion of .said resilient socket so as tobias said' back into a predetermined position, and said means being arranged to release said back fromsaid structure when said back is tilted to a position substan t'ially' normal to said predetermined position.

Abstract

849,077. Resilient mountings for seats. MILLER FURNITURE CO., H. Feb. 6, 1959 [July 7, 1958], No. 4323/59. Class 52(1) In a chair 10 having a resiliently mounted backrest 14 a back-rest support 20 carries a connector 26 having a pair of short stub posts 28 with ballheads 30 and the back-rest 14 has secured thereto a pair of resilient members 24 each provided with a socket 42 to receive a head 30.

Description

' Nov. 14, 1961 J, F. PM; 3,008,764
CHAIR Original Filed July 7, 1958 a I I 4 2 g 44 INVENTOR.
JOHN /-7 FILE BY WMMKM ATTORNEYS 3,008,764 CHAIR John F. Pile, Brooklyn, N.Y., assignor to Herman Miller, Inc., a corporation of Michigan Continuation of application Ser. No. 746,795, July 7,
1958. This application Mar. 7, 1960, Ser. No. 13,348
3 Claims. (Cl. 297.306)
This invention relates to furniture in general, and more particularly to a chair having a separable shock mount for securing the back rest member to the support structure of the chair. i
This is a continuation of my co pending application Serial No. 746,795, filed July 7, 1958, entitled Separable Shock Mount, and now abandoned. n
A'dvanced furniture designs usually stress the esth etic beauty of functional forms. Thus the design of a simple chair emphasizes the seat and back rest member while the legs and back rest support are made less obvious. In doing this the legs and back rest support must still beof sturdy construction and must be securely fastened to otherparts of the chair.
The back rest for a chair usually includes some resilience to more comfortably support a persons back. Some chairs may have the back rest padded for such purpose. Other chairs may have the back rest formed to complement the contours of a persons back and have the back rest or its support include some resilience.-
In providing resilience for a back rest member or its support, great care must be exercised in providing a structure which is reasonably soft but will not give way under an unusually strong effort. The normal e'lfort of leaning against a back rest, in sitting in a chair, including when the chair is leaned backwards, is naturally given attention. However, the strength of the back rest and its support are also required to resist the effort of one sitting in the chair backwards and leaning heavily on the back rest member, or someone pulling on the backrest while someone else is seated in the chair. These are unusual examples but nevertheless not unforeseeable tests to which a chair may be subjected.
It is an object of this invention to disclose a chair having a means of mounting a back rest member to a sup port therefor in a manner providing secure engagement of the one to the other and which will also yield under undue stress to disengage the parts without damage or' injury thereto.
It is an object of this invention to disclose a separable mount for engaging a back rest or other member of a chair to a support therefor and which are readily re-engaged together after they have been separated.
The separable mount of this invention is intended to provide secure engagement of the parts with which it is used, and to withstand normal shocks received thereby. The separable shock mount is intended to give way only under extreme conditions which might otherwise result in irreparable damage to the chair.
A further object of this invention is to disclose a shock resistant mount which is relatively inexpensive to manufacture and to incorporate into the construction of a chair or the like. The mount proposed includes resilient blocks capable of being bonded to one member and formed to receive other members into engagement therewith. The resilient members are formed to include a ball socket therein and are receptive of a ball headed member. The socket is disengaged from the ball headed member only by a force twisting the member to which the socket is engaged through an angle just less than that which would cause irreparable damage if the separable mount were not provided.
This invention enables the back rest member of a chair to be separated from the support to which the back rest is engaged before any serious damage is -.done to either. When the back rest member is twisted through greater than the separable shock mount releases and disengages the back rest, from its support. The mount is such as'will not give way except under the condition recited. Accordingly, the back rest is in all other re-' spects securely engaged to its support. I
These and other objects and advantages in the practice of this invention will be more apparent in the illustration and description of a working embodiment of the invention, as hereinafter set forth. 1
'In the drawings: a c FIG. 1 is a perspective view of a chair including the separable shock mount of thisinvention to engage the back rest member to the support therefor.
FIG. 2 is an enlarged cross sectional view of the shock mount of this invention as normally disposed.
FIG. 3 is a enlarged cross sectional view of the shock mount of this invention as distorted in the relative twisting of the members to which it is engaged, and about to release such members from each other. i
FIG. 4 is a detailed perspective view of the fixed portion of the shock mount of this invention. i
The chair 10, shown in FIG. 1, includes a seat'12 and back rest member 14. Chair legs 16 and 18 support the seat member. A back rest brace or support 20 extends from under the seat to support the back rest 14. The back rest 14 is secured to the back rest support 20 by means of the separable shock mount 22 of this invention. The separable shock mount 22 includes a pair of resil ient members 24 secured to theback of the back rest member 14. A connector 26 is rigidly secured to the support 20 in any desired manner, such as by welding, bolting or riveting. A pair of short stub'posts 28 project generally horizontally toward the back rest 14 from the connector 26, with which they are integrally formed. Thus, the stub posts 28 are rigidly held' in a horizontal position regardless of any movement of back rest 14. The stub posts 28 have ball heads 30 formed on' the' ends thereof. The back rest 14 is secured to the support 20 by the cooperative engagement of the posts of the connector 26 with the resilient members 24.
The resilient members 24 are each formed to a frustoconical shape and are made of a resilient material. The physical characteristics of the resilient material are such as suits the needs hereinafter set forth.
The base 32 of the resilient members 24 is formed to include a projection 34. The projection 34 is used to locate the mount on the back of the back rest 14. An indentation 36 is formed in the back rest member to receive the projection 34 and locate the members 24 thereon. An annular groove 38 is formed in the base of the resilient members to receive and retain the bonding agent used to secure the members 24 to the back rest 14.
The frusto-conical members 24 are formed to include a neck portion 40 at their smaller end. A ball socket 42 is formed within the resilient members 24 and a passage 44 is formed through the neck portion 40 and in communication with the socket. When the ball head 30 of a stub post 28 is received within the socket 42 the neck portion 40 forms a retaining sleeve about the post part of the connector.
The back rest 14 is readily engaged to the back rest support 20 by forcing the ball headed posts 28 of connector 26 into engagement with the resilient members 24. The ball ends 30 are snapped into the sockets 42 and the walls of passage 44 close tightly about the connector posts 28. The resilient members 24 form a shock resistant mount due to the isolation of the back rest from the support and the spacing of the ball receiving socket 42 from the base of the mount.
The resilient nature of members 24 enables the back 3. rest 14 a reasonable degree of freedom to. position itself to conform to the angular disposition of a persons back as one sits in the chair 10. Accordingly, whether one sits straight, or leansback inthe chair 10, the back rest will assumea position to comfortably supportones back.
The resilient members 24 are. separable from the connector 26 by pulling the back rest 14 from the support 20 with a force. sufiicient to pop the ball heads 30. from the sockets; 42. Normally the two spaced members 24 will provide sufficient resistance to a force of this kind to prevent the. back rest from being separated from both members at the same time. However, a side twisting of the back rest 14 around the support 20 will cause one of the members to pop one of the connector posts.
Provision is also made for the separationof the back rest from. the support 20 should an excessive force be applied to the back rest 1'4 in forcing it over the support. This separation of the back rest from the'support is intended to occur just prior to the increase of such a' force to where it might otherwise cause serious damage tothechain. For example, a-twisting force applied to the back rests14, forcing it over the. support 20, will pop the resilient members 24 from the connector 26 after the back rest is forced just beyond a 90 position. This isbest'shown in FIG; 3.
When the back rest14- is forced intothe position shown by FIG. 3, the post 28 stretches: the passage 44 and bunchesthe body of the resilient member to one side thereof. 'This, forms a fulcrum. and provides. sufficient leverage for the post to pop the ball head 30' from the socketi42.
Th6? back rest 14 is easily re-engaged to the? support 20 by forcing the ball headed posts 28 into'the sockets 42. Quite naturally this separation and reassociation of parts is not an overly frequentoccurrence. However, the back rest may be resecured. to the support 20 as: often as it becomes forcibly separated: therefrom.
While a preferred embodiment of this invention has been described, it will be understood that other modifications and improvements may be made thereto. Such of thesemodifications and improvements as incorporate the principles" of this invention" are to" be considered as in.-
5 fixed with respect to said seat, a back tiltably mounted with respect to said supporting. structure, and means connecting said back to said supporting structure, saidmeans providing for ready release and reconnection, said means resilientlybiasi'ng said back into a predetermined position, and said means being arranged to release said'back from said structure when said back is tilted to a position substantially normal to said predetermined position.
2. A chair comprising a seat, a supporting structure fixed with respect to said seat, a back'tiltably mounted with respect to said supporting structure, and means-ineluding, a rigid ball held in a resilient socket releasably connecting'said back to said supporting. structure, said means resiliently biasing saidback into a predetermined position, and said means being arranged to release said back from said structure when said back is tilted to a position substantiallynormal to said predetermined position.
3. A chair comprising a seat, a supporting structure fixed with respect to said seat, a back tiltably mounted with respect to said supporting'structure, and, means including a rigid ball held in a resilient socket releasably connecting said back to said supporting structure, said ball having a shank attached thereto, said shank being snugly embraced by a portion of .said resilient socket so as tobias said' back into a predetermined position, and said means being arranged to release said back fromsaid structure when said back is tilted to a position substan t'ially' normal to said predetermined position. v
References Cited -in the file of this patent UNITED STATES PATENTS 679,468 Pratt July 30, 1901 2,742,251 Udvardy Apr. 17', 1956- 2,847,062 Henrikson Aug. 12, 1958 2,959,213 Anderson Nov. 8, 1960
US13348A 1958-07-07 1960-03-07 Chair Expired - Lifetime US3008764A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA644544A CA644544A (en) 1958-07-07 Separable shock mount
US13348A US3008764A (en) 1958-07-07 1960-03-07 Chair

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US74679558A 1958-07-07 1958-07-07
US13348A US3008764A (en) 1958-07-07 1960-03-07 Chair

Publications (1)

Publication Number Publication Date
US3008764A true US3008764A (en) 1961-11-14

Family

ID=25002360

Family Applications (1)

Application Number Title Priority Date Filing Date
US13348A Expired - Lifetime US3008764A (en) 1958-07-07 1960-03-07 Chair

Country Status (5)

Country Link
US (1) US3008764A (en)
CA (1) CA644544A (en)
CH (1) CH369558A (en)
DE (1) DE1174462B (en)
GB (1) GB849077A (en)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3220771A (en) * 1965-02-23 1965-11-30 Sr Nolon M Doss Reverse sun deck chair
FR2435230A1 (en) * 1978-09-08 1980-04-04 Protoned Bv ERGONOMIC CHAIR
US4457524A (en) * 1980-04-18 1984-07-03 Yamaha Hatsudoki Kabushiki Kaisha Motorcycle seat
US4767159A (en) * 1983-03-17 1988-08-30 Peter Opsvik Chair having supporting member for the posterior and the shins, respectively, of a chair occupant
US4960305A (en) * 1983-03-17 1990-10-02 Peter Opsvik Air comprising supports for the posterior and the shins, respectively, of a chair occupant
US5295755A (en) * 1991-12-09 1994-03-22 Herman Miller, Inc. Shock mount
US5839782A (en) * 1995-03-15 1998-11-24 Nhk Spring Co., Ltd. Torsion-bar equipped vibration absorbing-seat device
US5909923A (en) * 1997-10-24 1999-06-08 Steelcase Inc. Chair with novel pivot mounts and method of assembly
EP1192880A2 (en) * 2000-09-29 2002-04-03 Sedus Stoll AG Neck support for a chair
US6729691B2 (en) * 2001-06-15 2004-05-04 Hon Technology, Inc. Chair back construction
US20050052061A1 (en) * 2001-12-14 2005-03-10 Deimen Michael L. Chair with lumbar support and conforming back
US20070057550A1 (en) * 2005-03-01 2007-03-15 Beyer Pete J Chair back with lumbar and pelvic supports
TWI495444B (en) * 2012-08-23 2015-08-11
US11527462B2 (en) 2019-12-13 2022-12-13 International Business Machines Corporation Circuit substrate with mixed pitch wiring
US11589678B2 (en) 2019-01-17 2023-02-28 Hni Technologies Inc. Chairs including flexible frames

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6070943A (en) * 1996-05-07 2000-06-06 Guery-Strahm; Ruth Ergonomic seating unit
IL122172A0 (en) * 1997-11-11 1998-04-05 Guery Strahm Ruth Chair
USD932204S1 (en) 2020-01-02 2021-10-05 Steelcase Inc. Chair
USD932202S1 (en) 2020-01-02 2021-10-05 Steelcase Inc. Chair

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US679469A (en) * 1901-05-15 1901-07-30 Thomas J Price Machine for making tubing.
US2742251A (en) * 1952-12-30 1956-04-17 Udvardy Zolton Support for self-massaging device
US2847062A (en) * 1957-08-19 1958-08-12 American Seating Co Chair back construction
US2959213A (en) * 1958-10-20 1960-11-08 Nat Lock Co Hinge swivel for chair back

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2579918A (en) * 1947-01-25 1951-12-25 Roland J Freeman Cushioning assembly unit for back rests
DE921588C (en) * 1950-04-14 1954-12-23 Karl Weber Seating furniture with flexible seat and back
US2796920A (en) * 1955-02-01 1957-06-25 Gen Tire & Rubber Co Chair back support

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US679469A (en) * 1901-05-15 1901-07-30 Thomas J Price Machine for making tubing.
US2742251A (en) * 1952-12-30 1956-04-17 Udvardy Zolton Support for self-massaging device
US2847062A (en) * 1957-08-19 1958-08-12 American Seating Co Chair back construction
US2959213A (en) * 1958-10-20 1960-11-08 Nat Lock Co Hinge swivel for chair back

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3220771A (en) * 1965-02-23 1965-11-30 Sr Nolon M Doss Reverse sun deck chair
FR2435230A1 (en) * 1978-09-08 1980-04-04 Protoned Bv ERGONOMIC CHAIR
US4457524A (en) * 1980-04-18 1984-07-03 Yamaha Hatsudoki Kabushiki Kaisha Motorcycle seat
US4767159A (en) * 1983-03-17 1988-08-30 Peter Opsvik Chair having supporting member for the posterior and the shins, respectively, of a chair occupant
US4960305A (en) * 1983-03-17 1990-10-02 Peter Opsvik Air comprising supports for the posterior and the shins, respectively, of a chair occupant
US5295755A (en) * 1991-12-09 1994-03-22 Herman Miller, Inc. Shock mount
US5839782A (en) * 1995-03-15 1998-11-24 Nhk Spring Co., Ltd. Torsion-bar equipped vibration absorbing-seat device
US5909923A (en) * 1997-10-24 1999-06-08 Steelcase Inc. Chair with novel pivot mounts and method of assembly
US6318800B1 (en) 1997-10-24 2001-11-20 Steelcase Development Corporation Seating unit with novel pivot mounts and method of assembly
EP1192880A2 (en) * 2000-09-29 2002-04-03 Sedus Stoll AG Neck support for a chair
EP1192880A3 (en) * 2000-09-29 2003-08-27 Sedus Stoll AG Neck support for a chair
US6729691B2 (en) * 2001-06-15 2004-05-04 Hon Technology, Inc. Chair back construction
US7066537B2 (en) 2001-06-15 2006-06-27 Hni Technologies Inc. Chair back construction
US20050121954A1 (en) * 2001-06-15 2005-06-09 Hon Technology Inc. Chair back construction
US7014269B2 (en) * 2001-06-15 2006-03-21 Hon Technology Inc. Chair back construction
US20050052061A1 (en) * 2001-12-14 2005-03-10 Deimen Michael L. Chair with lumbar support and conforming back
US20070057550A1 (en) * 2005-03-01 2007-03-15 Beyer Pete J Chair back with lumbar and pelvic supports
US7347495B2 (en) 2005-03-01 2008-03-25 Haworth, Inc. Chair back with lumbar and pelvic supports
US7484802B2 (en) 2005-03-01 2009-02-03 Haworth, Inc. Chair back with lumbar and pelvic supports
US20090256407A1 (en) * 2005-03-01 2009-10-15 Haworth, Inc. Chair back with lumbar and pelvic supports
US8313143B2 (en) 2005-03-01 2012-11-20 Haworth, Inc. Chair back with lumbar and pelvic supports
US8845024B2 (en) 2005-03-01 2014-09-30 Haworth, Inc. Chair back with lumbar and pelvic supports
US9538849B2 (en) 2005-03-01 2017-01-10 Haworth, Inc. Chair back with lumbar and pelvic supports
TWI495444B (en) * 2012-08-23 2015-08-11
US11589678B2 (en) 2019-01-17 2023-02-28 Hni Technologies Inc. Chairs including flexible frames
US11527462B2 (en) 2019-12-13 2022-12-13 International Business Machines Corporation Circuit substrate with mixed pitch wiring

Also Published As

Publication number Publication date
GB849077A (en) 1960-09-21
CH369558A (en) 1963-05-31
CA644544A (en) 1962-07-10
DE1174462B (en) 1964-07-23

Similar Documents

Publication Publication Date Title
US3008764A (en) Chair
US4157203A (en) Articulated double back for chairs
US4165902A (en) Knockdown upholstered furniture
US7425039B2 (en) Body-supporting device
US4390204A (en) Portable furniture
WO2014061299A1 (en) Chair
US5190347A (en) Adjustable flexible back cushion with adjusting belts and attachment belt
US5354118A (en) Stuffed figure chair
US2847062A (en) Chair back construction
JPS63500431A (en) Chair with articulated flexible elastic backrest
EP2984966A1 (en) Inflatable, floatable, modular furniture system
US3672721A (en) Rubber spring assembly for chair control
US3017220A (en) Baby chair
US6439656B1 (en) Folding chair convertible to rocking chair
US6595582B1 (en) Folding chair with safety latch device
US3157432A (en) Child's chair with adapter bracket
US2973031A (en) Cast base for chair seats
US4586746A (en) Child's seat
GB1040932A (en) Improvements relating to seats
US6557942B1 (en) Combination lounger with easy assembly and detaching structure
US2534009A (en) Adjustable back rest
US3407001A (en) Article of furniture
US3275374A (en) Upholstered furniture comprising a head rest
US4036526A (en) Furniture spring support
US3127217A (en) figure