US3447198A - Chair control back back-plate with integrally formed bearings - Google Patents

Chair control back back-plate with integrally formed bearings Download PDF

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US3447198A
US3447198A US582745A US3447198DA US3447198A US 3447198 A US3447198 A US 3447198A US 582745 A US582745 A US 582745A US 3447198D A US3447198D A US 3447198DA US 3447198 A US3447198 A US 3447198A
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plate
chair control
integrally formed
bearings
formed bearings
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Expired - Lifetime
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US582745A
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Frank Doerner
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Doerner Products Co Ltd
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Doerner Products Co Ltd
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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
    • A47C7/36—Support for the head or the back
    • A47C7/40—Support for the head or the back for the back
    • A47C7/48—Support for the head or the back for the back of freely-rotatable type
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49863—Assembling or joining with prestressing of part
    • Y10T29/49876—Assembling or joining with prestressing of part by snap fit

Definitions

  • the chair controls presently in use have the back-plate and the back back-plate each in the form of an U-shaped channel which is formed with a base and a pair of upright sides, the plate sides being hingedly connected together by a hinge pin which is entered through coaxial holes formed in the sides.
  • the hinge pin is permanently secured in place by riveting the projecting ends.
  • a disadvantage of this structure is that the two plates are permanently secured together and can only be disconnected by severing the hinge pin which, of course, destroys the connection.
  • Furthermore the foregoing construction requires special tools and jigs for permanently inserting the hinge pin of the chair control.
  • the present invention solves the foregoing problems and also simplifies the assembly of the back-plate and the back back-plate of a chair control and also reduces the manufacturing cost.
  • the chair control of the present invention and by which the foregoing disadvantages are solved, comprises a back-plate and a back back-plate in which: (a) said back-plate consists of a base plate and a pair of side members held in fixed spaced apart relationship by a rigid spacer bar and a bearing formed in each side member, and (b) said back back-plate consists of an U-shaped member having outwardly extending substantially rigid arms which embrace said side members therebetween and an annular bearing formed integrally with each arm, one of each of said bearing members being entered in its respective bearing.
  • FIGURE 1 which is a perspective view of the pair of plate members of a chair control consisting of a back plate and a back back-plate hingedly connected together according to the present invention
  • FIGURE 2 which is a fragmentary perspective View showing the hinge connection, partly in cross section;
  • FIGURE 3 which is a fragmentary plan view illustrating the deflection of the sides of the back back-plate as the first step in assembling or separating the same;
  • FIGURE 4 which is a plan view with the sides in their normal position with the members hingedly connected together.
  • the back-plate of conventional form, is generally indicated by the numeral 10 and the back back-plate, also of conventional form, by the numeral 11.
  • the back-plate 10 comprises a base 12 and a pair of side members 13, 14 which are held in spaced relationship by a spacer bar 15.
  • the back backplate is also of channel form and comprises a base 16 and side members 17, 18.
  • the hinge connection for hingedly connecting the back plate and the back back-plate comprises coaxail bearings 19, 20 which form bearings for coaxial trunnions 21, 22 formed integrally on the side members 17, 18.
  • the bearings 19, 20 are formed by a simple punching method and the trunnions are formed by any convenient conventional punching method.
  • a chair control having a generally U-shaped backplate and a generally U-shaped back back-plate, in which: (a) said back-plate comprises a flat base plate and a pair of integral side members held in fixed spaced apart parallel relationship by a rigid spacer bar and a bearing opening formed in each side member; and
  • said back back-plate comprises a U-shaped member having a flat base plate for attachment to the back of said chair, said member having outwardly extending substantially flexible arms in spaced apart parallel relationship which embrace said side members, and an annular trunnion formed integrally with and projecting inwardly from each arm said trunnions being extending into and interfitting said bearing openings when said flexible arms are deflected laterally whereby said back and back back-plates are pivotally interconnected to permit of pivotal movement of the chair.

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  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)

Description

F. DOERNER June 3,- 1969 CHAIR CONTROL BACK BACK-PLATE WITH INTEGRALLY FORMED BEARINGS Filed Sept. 28, 1966 INVENTOK FRANK DOE HER 'AT;ORLE Y:
United States Patent 3,447,198 CHAIR CONTROL BACK BACK-PLATE WITH INTEGRALLY FORMED BEARINGS Frank Doerner, Waterloo, Ontario, Canada, asslgnor to Doerner Products Co. Limited, Waterloo, Ontario, Canada, a corporation of Ontario Filed Sept. 28, 1966, Ser. No. 582,745 Int. Cl. A47c 7/46; F16c 11/00 US. Cl. 16-128 1 Claim ABSTRACT OF THE DISCLOSURE Background of invention The chair controls presently in use have the back-plate and the back back-plate each in the form of an U-shaped channel which is formed with a base and a pair of upright sides, the plate sides being hingedly connected together by a hinge pin which is entered through coaxial holes formed in the sides. The hinge pin is permanently secured in place by riveting the projecting ends. A disadvantage of this structure is that the two plates are permanently secured together and can only be disconnected by severing the hinge pin which, of course, destroys the connection. Furthermore the foregoing construction requires special tools and jigs for permanently inserting the hinge pin of the chair control.
Description of invention The present invention solves the foregoing problems and also simplifies the assembly of the back-plate and the back back-plate of a chair control and also reduces the manufacturing cost.
The chair control of the present invention and by which the foregoing disadvantages are solved, comprises a back-plate and a back back-plate in which: (a) said back-plate consists of a base plate and a pair of side members held in fixed spaced apart relationship by a rigid spacer bar and a bearing formed in each side member, and (b) said back back-plate consists of an U-shaped member having outwardly extending substantially rigid arms which embrace said side members therebetween and an annular bearing formed integrally with each arm, one of each of said bearing members being entered in its respective bearing.
FIGURE 1 which is a perspective view of the pair of plate members of a chair control consisting of a back plate and a back back-plate hingedly connected together according to the present invention;
FIGURE 2 which is a fragmentary perspective View showing the hinge connection, partly in cross section;
FIGURE 3 which is a fragmentary plan view illustrating the deflection of the sides of the back back-plate as the first step in assembling or separating the same; and
FIGURE 4 which is a plan view with the sides in their normal position with the members hingedly connected together.
Referring now to the drawings, the back-plate, of conventional form, is generally indicated by the numeral 10 and the back back-plate, also of conventional form, by the numeral 11. The back-plate 10 comprises a base 12 and a pair of side members 13, 14 which are held in spaced relationship by a spacer bar 15. The back backplate is also of channel form and comprises a base 16 and side members 17, 18.
The hinge connection for hingedly connecting the back plate and the back back-plate comprises coaxail bearings 19, 20 which form bearings for coaxial trunnions 21, 22 formed integrally on the side members 17, 18. The bearings 19, 20 are formed by a simple punching method and the trunnions are formed by any convenient conventional punching method.
It is quite simple to assemble the plates. This is done by means of a tool or jig which will separate or deflect the sides 17, 18 sufficiently to allow the trunnions to be brought into registration with their respective bearings. When the trunnions are in registration the instrument is released and the sides will return to their normal position and thus engage the trunnions in the bearings 19, 20. When it is desired to separate the two plates, a deflecting tool is used to deflect the sides 17, 18 to withdraw the trunnions 21, 22 from the bearings 19, 20 and permit the parts to be separated.
What I claim as new and desire to protect by Letters Patent of the United States is:
1. In a chair control having a generally U-shaped backplate and a generally U-shaped back back-plate, in which: (a) said back-plate comprises a flat base plate and a pair of integral side members held in fixed spaced apart parallel relationship by a rigid spacer bar and a bearing opening formed in each side member; and
(b) said back back-plate comprises a U-shaped member having a flat base plate for attachment to the back of said chair, said member having outwardly extending substantially flexible arms in spaced apart parallel relationship which embrace said side members, and an annular trunnion formed integrally with and projecting inwardly from each arm said trunnions being extending into and interfitting said bearing openings when said flexible arms are deflected laterally whereby said back and back back-plates are pivotally interconnected to permit of pivotal movement of the chair.
References Cited UNITED STATES PATENTS BOBBY R. GAY, Primary Examiner.
US. Cl. X.R. 16171
US582745A 1966-09-28 1966-09-28 Chair control back back-plate with integrally formed bearings Expired - Lifetime US3447198A (en)

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US58274566A 1966-09-28 1966-09-28

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4485544A (en) * 1981-03-04 1984-12-04 Ryswyk Henricus J Van Method of making articles comprising two components hinged one to the other
DE3501910A1 (en) * 1984-10-25 1986-04-30 Konrad 8501 Burgthann Neumüller Seat support for chairs, in particular work swivel chairs
US4675942A (en) * 1983-09-02 1987-06-30 Les Maisons Quebco Inc. Hinge pin support having variably positionable enterengaging members

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2186557A (en) * 1939-02-23 1940-01-09 Rosovsky Nathan Snap fastener
US2239732A (en) * 1937-02-24 1941-04-29 Charles H Angell Adjustable chair
US2379928A (en) * 1942-11-10 1945-07-10 Lapin Products Inc Spectacles
US2677129A (en) * 1950-12-15 1954-05-04 Viewmaster Corp Sunshade and eyeshield for headgear
FR1230180A (en) * 1958-07-09 1960-09-14 Tan Sad Chair Co 1931 Ltd Adjustable seat backs
US3038676A (en) * 1958-07-31 1962-06-12 Johnson & Johnson Towel roll holder
US3156756A (en) * 1961-06-07 1964-11-10 American Optical Corp Hinge construction
US3226763A (en) * 1961-11-09 1966-01-04 Clarence F Jonas Pinless sheet metal hinge construction and applications thereof
US3242564A (en) * 1962-03-05 1966-03-29 Longhini Giovanni Method of making a hair curl-clip

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2239732A (en) * 1937-02-24 1941-04-29 Charles H Angell Adjustable chair
US2186557A (en) * 1939-02-23 1940-01-09 Rosovsky Nathan Snap fastener
US2379928A (en) * 1942-11-10 1945-07-10 Lapin Products Inc Spectacles
US2677129A (en) * 1950-12-15 1954-05-04 Viewmaster Corp Sunshade and eyeshield for headgear
FR1230180A (en) * 1958-07-09 1960-09-14 Tan Sad Chair Co 1931 Ltd Adjustable seat backs
US3038676A (en) * 1958-07-31 1962-06-12 Johnson & Johnson Towel roll holder
US3156756A (en) * 1961-06-07 1964-11-10 American Optical Corp Hinge construction
US3226763A (en) * 1961-11-09 1966-01-04 Clarence F Jonas Pinless sheet metal hinge construction and applications thereof
US3242564A (en) * 1962-03-05 1966-03-29 Longhini Giovanni Method of making a hair curl-clip

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4485544A (en) * 1981-03-04 1984-12-04 Ryswyk Henricus J Van Method of making articles comprising two components hinged one to the other
US4675942A (en) * 1983-09-02 1987-06-30 Les Maisons Quebco Inc. Hinge pin support having variably positionable enterengaging members
DE3501910A1 (en) * 1984-10-25 1986-04-30 Konrad 8501 Burgthann Neumüller Seat support for chairs, in particular work swivel chairs

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