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US3288525A - Orthopedic chair - Google Patents

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US3288525A
US3288525A US45635265A US3288525A US 3288525 A US3288525 A US 3288525A US 45635265 A US45635265 A US 45635265A US 3288525 A US3288525 A US 3288525A
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chair
back
diaphragm
seat
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Donald B Cerf
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Donald B Cerf
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    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C7/00Parts, details, or accessories of chairs or stools
    • A47C7/36Support for the head or the back
    • A47C7/40Support for the head or the back for the back
    • A47C7/46Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs
    • A47C7/462Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs adjustable by mechanical means

Description

Nov. 29, 1966 D. B. CERF 3,288,525

ORTHOPEDI C CHAIR Filed May 17, 1965 INVENTOR. 3 00mm 8- C6 United States Patent M 3,288,525 ORTHDPEDIC CHAIR Donald B. Cerf, 309 E. Live Oak, San Gabriel, Calif. Filed May 17, 1965, Ser. No. 456,352

Claims. (Cl. 297284) This invention relates generally to chair structures, and in particular to an orthopedic chair having a seat and a back whose contours are adjustable to conform these elements to the special requirement of an occupant.

The conventional baby chair is constituted by a seat, a back and side arms, the chair usually including a foot rest and a safety belt to strap the child within the chair. It is desirable from the orthopedic standpoint, for the child to maintain an erect posture within the chair, for prolonged slumping may lead to deformity. But the spine of a baby is so flexible and almost rubber-like that he literally collapses in an unsupported chair of ordinary design, and all that restrains him from sliding completely out of his seat is the safety belt. This problem is encountered not merely in very young infants, but also in babies up to the age of twenty-four months.

Heretofore, attempts have been made to shape the chair to conform to the contour of a user. However, While it is possible to impart a contour to a chair suitable for a particular child or older person, this contour may not be appropriate to another person or to the child as he grows and changes in contour.

Accordingly, it is the major object of this invention to provide an orthopedic chair whose seat and back have a contour which is readily adaptable to conform these elements to the unique requirement of a particular user. While the invention will be described in the context of a baby chair, it will be appreciated that the underlying principles thereof are fully applicable to orthopedic chairs of larger size intended for older children or adults.

More specifically, the object of this invention is to provide a chair whose seat and back have a contour which may be conformed exactly to the posterior and spinal curvature of a particular user, whereby the seated individual is properly supported in a comfortable and orthopedically approved posture.

Yet another object of this invention is to provide a chair of the above-described type which is of strong and long lasting construction and yet may be manufactured and sold at relatively low cost.

Briefly stated, these objects are accomplished in a chair whose cushioned seat and back are constituted by a rigid backing and a flexible diaphragm, between which is sandwiched a layer of elastomeric material, such as foam rubber, means being provided to impart a curvature to the diaphragm producing the desired contour.

For a better understanding of the invention, as well as other objects and further features thereof, reference is made to the following detailed specification to be read in conjunction with the accompanying drawing, wherein like elements in the several views are identified by like reference numerals.

In the drawing:

FIG. 1 is a perspective view of a chair in accordance with the invention;

FIG. 2 is a front elevational view of the chair, with the side arms omitted;

FIG. 3 is a section taken through the back of the chair in the plane indicated by line 33 in FIG. 2;

FIG. 4 is a section taken through the plane indicated by lines 44 in FIG. 3;

FIG. 5 shows schematically the contour imparted to the chair seat and back for an infant of relatively large size;

FIG. 6 shows the contour imparted to the same chair for an infant of smaller size; and

3,288,525 Patented Nov. 29, 1966 FIG. 7 shows a child in a conventional chair.

Referring now to the drawings, and more particularly to FIG. 7 which shows an infant F in a conventional chair having a flat seat S and a straight back B, as well as a foot rest R, it will be seen that since theinfant is unsupported he occupies the chair in a slumped position, with a pronounced curvature to his spine. Orthopedically, this position is highly undesirable. Moreover, unless the infant is strapped to the chair, there is a likelihood that he will slide out of the chair and possibly injure himself.

We shall now consider a chair in accordance with the invention, as shown in FIGS. 1 to 4, and as represented schematically in FIGS. 5 and 6. The orthopedic chair is constituted by a seat, generally designated by numeral 10, a back 11, side arms 12 and 13 and a foot rest 14, which ICC is only partially shown.

1 whereas the stuffed section 15 may be filled with cotton batting 16 or similar material and covered with leather.

Within the arms of the stuffed section 15 there is placed an insert constituted by a diphragm 17 of flat spring material, which may be of sheet metal or plastic, the diaphragm being covered with a ribbed pad 18. Interposed between the diaphragm and the backing is a layer 19 of elastomeric material, which may be polyurethane, polyvinyl or rubber foam. Because of the compressible nature of the foam, it fills the space behind the diaphragm, regardless of how the diaphragm is contoured.

Attached to the rear of the diaphragm 17 at vertically spaced positions are three coupling plates 20, 21 and 22 having channels indented therein. Extending rearwardly from these plates are threaded rods 23, 24 and 25 whose ends are keyed to the channel portions of the plates, the rods passing through internally threaded inserts 26, 27 and 23 embedded in the backing and terminating in control knobs 29, 30 and 31.

Thus by rotating each of the knobs 29, 30 and 31, the portion of the diaphragm which is operatively coupled thereto by the associated rod is caused to be flexed outwardly or inwardly, depending on the direct-ion of rotation. In this way, since the three rods are disposed at the center and adjacent the upper and lower ends of the diaphragm, respectively, the diaphragm may be caused to assume various configurations, depending on the relative adjustment of the rods.

For example, as shown in FIG. 3, the diaphragm and hence that portion of the chair back which engages the back of the child may be caused to assume a concave configuration. On the other hand, as shown schematically in FIG. 6, the back may be contoured to follow the back curvature of a relatively large infant, with the upper rod causing the diaphragm to conform to the small of the back of the infant, with the other rods adjusted accordingly. But in FIG. 6, with a shorter infant, it is the center rod which is turned in to the greatest extent in order to accommodate the small of the back which occupies a lower position than in FIG. 5.

It will be seen that the back 11 is pivotally connected to the seat 10' by hinge 32, the angular position of the back being adjustable to provide the most comfortable seating arrangement. The seat construction is similar to that of the back, and is therefore not shown in detail. It differs from the back mainly in the fact that in lieu of three adjusting rods, only one, 34, need be provided, in order, as shown in FIGS. 3, 5 and 6, to raise a portion of the seat to an extent forming a concavity to receive the posterior of the occupant. The angle of the foot rest 14 may also be made adjustable.

Thus it becomes possible to adjust the curvature both of the seat and the back and thereby contour the chair to conform to the needs of the occupant.

While there has been shown a preferred embodiment of the invention, it will be obvious that many changes may be made therein without departing from the essential features of the invention as defined in the annexed claims.

What I claim is:

1. An orthopedic chair having a seat and a back, said seat and said back each having a cont-curable portion constituted by a rigid backing, 1a flexible diaphragm and an elastomeric layer interposed therebetween, and means to impart a curvature to the diaphragm producing a desired contour appropriate to a particular occupant, said means acting on the diaphragm on the back being constituted by a plurality of rods coupled at spaced positions to said diaphragm and projecting rearwardly through the rigid backing, the axial positions of said rods with respect to said rigid backing being adjustable to impart a curvature to said diaphragm whose profile conforms to the back curvature of the occupant.

2. A chair as set forth in claim 1, wherein said diaphragm is of flat spring metal.

3. A chair as set forth in claim 1, wherein said layer is formed of polyurethane foam.

4. A chair as set forth in claim 1, wherein each of said rods is constituted by a threaded rod, one end of which is coupled to said diaphragm, the rod rearward ly passing through said backing and terminating in a control knob.

5. A chair :as set forth in claim 1, further including an adjustable foot rest.

References Cited by the Examiner UNITED STATES PATENTS 1,527,754 2/1925 Simon 128-44 2,139,028 12/1938 Mensendicck et a1. 297284 2,664,143 12/1953 Li Calsi 297-154 X 2,991,124 7/1961 Schwarz 297284 3,095,188 6/1963 Giese 297460 X 3,112,137 11/1963 Drenth 297--284 3,155,425 11/1964 Chreist 297254 X 3,198,578 8/1965 Geoffrey et .al. 297456 FOREIGN PATENTS 557,421 5/ 1957 Belgium.

939,909 9/1961 Great Britain.

FRANK B. SHERRY, Primary Examiner.

CASMIR A. NUNBERG, Examiner.

Claims (1)

1. AN ORTHOPEDIC CHAIR HAVING A SEAT AND A BACK, SAID SEAT AND SAID BACK EACH HAVING A CONTOURABLE PORTION CONSTITUTED BY A RIGID BACKING, A FELXIBLE DIAPHRAGM AND AN ELASTOMERIC LAYER INTERPOSED THEREBETWEEN, AND MEANS TO IMPART A CURVATURE TO THE DIAPHRAGM PRODUCING A DESIRED CONTOUR APPROPRIATE TO A PARTICULAR OCCUPANT, SAID MEANS ACTING ON THE DIAPHRAGM ON THE BACK BEING CONSTITUATED BY A PLURALITY OF RODS COUPLED AT SPACED POSITIONS TO SAID DIAPHRAGM AND PROJECTING REARWARDLY THROUGH THE RIGID BACKING, THE AXIAL POSITIONS OF SAID RODS WITH RESPECT TO SAID RIGID BACKING BEING ADJUSTABLE TO IMPART A CURVATURE TO SAID DIAPHRAGM WHOSE PROFILE CONFORMS TO THE BACK CURVATURE OF THE OCCUPANT.
US3288525A 1965-05-17 1965-05-17 Orthopedic chair Expired - Lifetime US3288525A (en)

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Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3464754A (en) * 1967-01-17 1969-09-02 Rex Stroll O Chair Co Orthopedic chair
US3495871A (en) * 1966-11-29 1970-02-17 Recaro Ag Adjustable seat,primarily for motor vehicles
US3635524A (en) * 1968-03-13 1972-01-18 Recaro Ag Adjustable seat especially for a motor vehicle
US3717376A (en) * 1970-08-31 1973-02-20 M Lutchansky Furniture with body contour accommodating support system
US4027878A (en) * 1975-09-15 1977-06-07 Crown Recreation, Inc. Bed leveling mechanism
US4431232A (en) * 1980-09-18 1984-02-14 Nabil Hannouche Back cushion
US4469374A (en) * 1981-11-20 1984-09-04 Namba Press Works Co., Ltd. Automotive seat
US4489982A (en) * 1980-11-25 1984-12-25 Spinal Dynamics, Inc. Pelvic support method and means
US4531779A (en) * 1983-01-24 1985-07-30 Namba Press Works Co., Ltd. Automotive seat with lumbar support
US4580837A (en) * 1984-04-25 1986-04-08 Car Tec Inc. Vehicle seat
US4601514A (en) * 1983-07-08 1986-07-22 Messrs. Willibald Grammer Seat having an adjustable back support arrangement
US4630863A (en) * 1985-09-09 1986-12-23 Bio-Support Industries Ltd. Portable seat
US4644593A (en) * 1985-10-09 1987-02-24 Brien James A O Variable support cushion for supporting anatomical body weight
US4679848A (en) * 1985-02-11 1987-07-14 Spierings Petrus A M Back support mechanism and method
US4944554A (en) * 1987-10-02 1990-07-31 Gross Clifford M Active biomechanical chair
US5240308A (en) * 1983-11-09 1993-08-31 Goldstein Glenn A Ergonomic adjustable chair and method
US5251963A (en) * 1988-10-03 1993-10-12 Nissan Motor Co., Ltd. Vehicular long cruising seat
US6089654A (en) * 1993-01-15 2000-07-18 Burstein; Sharon A. Modular furniture for children
US6125851A (en) * 1994-08-12 2000-10-03 Walker; Brock M. Spinal support system for seating
US20060001304A1 (en) * 2004-06-28 2006-01-05 Brock M. Walker Seat with adjustable support system
US20060103204A1 (en) * 2003-04-03 2006-05-18 Brock M. Walker Seat with adjustable support system
US20060238006A1 (en) * 2005-04-08 2006-10-26 Baranov Michael V Armchair for formation and correction of human spine
US20070057550A1 (en) * 2005-03-01 2007-03-15 Beyer Pete J Chair back with lumbar and pelvic supports
US20070106188A1 (en) * 2005-10-28 2007-05-10 Walker Brock M Adjustable seating support system
US20080005917A1 (en) * 2005-06-10 2008-01-10 Joe Willette Apparatus and process for determining lumbar configuration in a chair
US20090054929A1 (en) * 2005-07-26 2009-02-26 Pajares Mellado Francisco E Apparatus for the Prevention and Treatment of Back Pain
US20090236887A1 (en) * 2007-09-18 2009-09-24 Shunjie Lu Back support for a seat
US20110183729A1 (en) * 2010-01-27 2011-07-28 Akira Satou Mobile electronic device
US20110193383A1 (en) * 2006-08-28 2011-08-11 Gayo Labs Ltd. Adjustable chair for accommodating multiple body positions and methods of use thereof
US8272693B2 (en) 2008-05-02 2012-09-25 Haworth, Inc. Tension mechanism for a weight-responsive chair
US8398170B2 (en) 2006-10-06 2013-03-19 Brock Walker Active response seating system
US8459735B2 (en) * 2011-05-18 2013-06-11 Seats, Inc. Seat with recessing section
US8740303B2 (en) * 2012-06-22 2014-06-03 Michael V. Halliday Customizable chair with multipoint adjustment
US9254042B2 (en) 2012-06-22 2016-02-09 Michael V. Halliday Backrest member including an adjustable platform for use with a chair
US9326608B1 (en) 2008-01-09 2016-05-03 Goldilocks Associates, LLC Multi-configurable seating device
US20170231397A1 (en) * 2014-10-13 2017-08-17 Haworth, Inc. Lumbar support for a chair, and chair having same

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE557421A (en) *
US1527754A (en) * 1923-06-08 1925-02-24 Sylvester J Simon Relaxation chair
US2139028A (en) * 1937-09-29 1938-12-06 Elizabeth M Mensendicck Seat
US2664143A (en) * 1949-10-19 1953-12-29 Calsi Alfonso Li Collapsible and portable high chair
US2991124A (en) * 1958-09-26 1961-07-04 Schwarz Johann Back supporting attachment for seat backs
US3095188A (en) * 1960-11-25 1963-06-25 Ford Motor Co Seat back rest with adjustable spring rate
GB939909A (en) * 1961-09-26 1963-10-16 Schwarz Johann Improvements in or relating to seat assemblies
US3112137A (en) * 1962-01-15 1963-11-26 John B Drenth Jig for making custom chairs
US3155425A (en) * 1963-06-12 1964-11-03 South Bend Toy Mfg Company Inc Convertible chair for dolls and infants
US3198578A (en) * 1963-03-11 1965-08-03 Ford Motor Co Vehicle seat

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE557421A (en) *
US1527754A (en) * 1923-06-08 1925-02-24 Sylvester J Simon Relaxation chair
US2139028A (en) * 1937-09-29 1938-12-06 Elizabeth M Mensendicck Seat
US2664143A (en) * 1949-10-19 1953-12-29 Calsi Alfonso Li Collapsible and portable high chair
US2991124A (en) * 1958-09-26 1961-07-04 Schwarz Johann Back supporting attachment for seat backs
US3095188A (en) * 1960-11-25 1963-06-25 Ford Motor Co Seat back rest with adjustable spring rate
GB939909A (en) * 1961-09-26 1963-10-16 Schwarz Johann Improvements in or relating to seat assemblies
US3112137A (en) * 1962-01-15 1963-11-26 John B Drenth Jig for making custom chairs
US3198578A (en) * 1963-03-11 1965-08-03 Ford Motor Co Vehicle seat
US3155425A (en) * 1963-06-12 1964-11-03 South Bend Toy Mfg Company Inc Convertible chair for dolls and infants

Cited By (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3495871A (en) * 1966-11-29 1970-02-17 Recaro Ag Adjustable seat,primarily for motor vehicles
US3464754A (en) * 1967-01-17 1969-09-02 Rex Stroll O Chair Co Orthopedic chair
US3596990A (en) * 1967-01-17 1971-08-03 Louis Gottfried Orthopedic chair
US3635524A (en) * 1968-03-13 1972-01-18 Recaro Ag Adjustable seat especially for a motor vehicle
US3717376A (en) * 1970-08-31 1973-02-20 M Lutchansky Furniture with body contour accommodating support system
US4027878A (en) * 1975-09-15 1977-06-07 Crown Recreation, Inc. Bed leveling mechanism
US4431232A (en) * 1980-09-18 1984-02-14 Nabil Hannouche Back cushion
US4489982A (en) * 1980-11-25 1984-12-25 Spinal Dynamics, Inc. Pelvic support method and means
US4469374A (en) * 1981-11-20 1984-09-04 Namba Press Works Co., Ltd. Automotive seat
US4531779A (en) * 1983-01-24 1985-07-30 Namba Press Works Co., Ltd. Automotive seat with lumbar support
US4601514A (en) * 1983-07-08 1986-07-22 Messrs. Willibald Grammer Seat having an adjustable back support arrangement
US5240308A (en) * 1983-11-09 1993-08-31 Goldstein Glenn A Ergonomic adjustable chair and method
US4580837A (en) * 1984-04-25 1986-04-08 Car Tec Inc. Vehicle seat
US4679848A (en) * 1985-02-11 1987-07-14 Spierings Petrus A M Back support mechanism and method
US4630863A (en) * 1985-09-09 1986-12-23 Bio-Support Industries Ltd. Portable seat
US4644593A (en) * 1985-10-09 1987-02-24 Brien James A O Variable support cushion for supporting anatomical body weight
US4944554A (en) * 1987-10-02 1990-07-31 Gross Clifford M Active biomechanical chair
US5251963A (en) * 1988-10-03 1993-10-12 Nissan Motor Co., Ltd. Vehicular long cruising seat
US6089654A (en) * 1993-01-15 2000-07-18 Burstein; Sharon A. Modular furniture for children
US6125851A (en) * 1994-08-12 2000-10-03 Walker; Brock M. Spinal support system for seating
US6532962B1 (en) 1994-08-12 2003-03-18 Brock M. Walker Spinal support system for seating
US20060103204A1 (en) * 2003-04-03 2006-05-18 Brock M. Walker Seat with adjustable support system
US7429080B2 (en) 2003-04-03 2008-09-30 Walker Brock M Seat with adjustable support system
US20060001304A1 (en) * 2004-06-28 2006-01-05 Brock M. Walker Seat with adjustable support system
US7537286B2 (en) * 2004-06-28 2009-05-26 Walker Brock M Seat with adjustable support system
US8313143B2 (en) 2005-03-01 2012-11-20 Haworth, Inc. Chair back with lumbar and pelvic supports
US20070057550A1 (en) * 2005-03-01 2007-03-15 Beyer Pete J Chair back with lumbar and pelvic supports
US9538849B2 (en) 2005-03-01 2017-01-10 Haworth, Inc. Chair back with lumbar and pelvic supports
US7347495B2 (en) 2005-03-01 2008-03-25 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
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
US20060238006A1 (en) * 2005-04-08 2006-10-26 Baranov Michael V Armchair for formation and correction of human spine
US7318286B1 (en) 2005-06-10 2008-01-15 Haworth, Inc. Apparatus and process for determining lumbar configuration in a chair
US20080005917A1 (en) * 2005-06-10 2008-01-10 Joe Willette Apparatus and process for determining lumbar configuration in a chair
US20090054929A1 (en) * 2005-07-26 2009-02-26 Pajares Mellado Francisco E Apparatus for the Prevention and Treatment of Back Pain
US20070106188A1 (en) * 2005-10-28 2007-05-10 Walker Brock M Adjustable seating support system
US20110193383A1 (en) * 2006-08-28 2011-08-11 Gayo Labs Ltd. Adjustable chair for accommodating multiple body positions and methods of use thereof
US9675179B2 (en) 2006-10-06 2017-06-13 Trac Tec, Ltd. Active response seating system
US8398170B2 (en) 2006-10-06 2013-03-19 Brock Walker Active response seating system
US9049937B2 (en) 2006-10-06 2015-06-09 Brock Walker Active response seating system
US7909402B2 (en) 2007-09-18 2011-03-22 Synergy Product Development, Inc. Back support for a seat
US20090236887A1 (en) * 2007-09-18 2009-09-24 Shunjie Lu Back support for a seat
US9326608B1 (en) 2008-01-09 2016-05-03 Goldilocks Associates, LLC Multi-configurable seating device
US8272693B2 (en) 2008-05-02 2012-09-25 Haworth, Inc. Tension mechanism for a weight-responsive chair
US20110183729A1 (en) * 2010-01-27 2011-07-28 Akira Satou Mobile electronic device
US8459735B2 (en) * 2011-05-18 2013-06-11 Seats, Inc. Seat with recessing section
US9254042B2 (en) 2012-06-22 2016-02-09 Michael V. Halliday Backrest member including an adjustable platform for use with a chair
US8740303B2 (en) * 2012-06-22 2014-06-03 Michael V. Halliday Customizable chair with multipoint adjustment
US20170231397A1 (en) * 2014-10-13 2017-08-17 Haworth, Inc. Lumbar support for a chair, and chair having same

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