EP0908163A2 - Mehrfach verstellbarer Lehnstuhl - Google Patents

Mehrfach verstellbarer Lehnstuhl Download PDF

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Publication number
EP0908163A2
EP0908163A2 EP98308023A EP98308023A EP0908163A2 EP 0908163 A2 EP0908163 A2 EP 0908163A2 EP 98308023 A EP98308023 A EP 98308023A EP 98308023 A EP98308023 A EP 98308023A EP 0908163 A2 EP0908163 A2 EP 0908163A2
Authority
EP
European Patent Office
Prior art keywords
seat
frame
chair
chair according
seat back
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.)
Withdrawn
Application number
EP98308023A
Other languages
English (en)
French (fr)
Other versions
EP0908163A3 (de
Inventor
Howard L. Loewenthal
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.)
Invacare Corp
Original Assignee
Invacare Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Invacare Corp filed Critical Invacare Corp
Publication of EP0908163A2 publication Critical patent/EP0908163A2/de
Publication of EP0908163A3 publication Critical patent/EP0908163A3/de
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C31/00—Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets
    • A47C31/10—Loose or removable furniture covers
    • A47C31/11—Loose or removable furniture covers for chairs
    • A47C31/116—Loose or removable furniture covers for chairs permeable to liquid or air in a special way
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03205—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination
    • A47C1/03216—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination by fluid means
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/034—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts including a leg-rest or foot-rest
    • A47C1/035—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts including a leg-rest or foot-rest in combination with movably coupled seat and back-rest, i.e. the seat and back-rest being movably coupled in such a way that the extension mechanism of the foot-rest is actuated at least by the relative movements of seat and backrest
    • 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
    • A47C7/62—Accessories for chairs
    • A47C7/72—Adaptations for incorporating lamps, radio sets, bars, telephones, ventilation, heating or cooling arrangements or the like
    • A47C7/74—Adaptations for incorporating lamps, radio sets, bars, telephones, ventilation, heating or cooling arrangements or the like for ventilation, heating or cooling
    • A47C7/742—Adaptations for incorporating lamps, radio sets, bars, telephones, ventilation, heating or cooling arrangements or the like for ventilation, heating or cooling for ventilating or cooling
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/006—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs convertible to stretchers or beds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/1091—Cushions, seats or abduction devices
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/12—Rests specially adapted therefor, e.g. for the head or the feet
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/12—Rests specially adapted therefor, e.g. for the head or the feet
    • A61G5/125—Rests specially adapted therefor, e.g. for the head or the feet for arms
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G2203/00—General characteristics of devices
    • A61G2203/70—General characteristics of devices with special adaptations, e.g. for safety or comfort
    • A61G2203/74—General characteristics of devices with special adaptations, e.g. for safety or comfort for anti-shear when adjusting furniture
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/1043—Cushions specially adapted for wheelchairs

Definitions

  • This application is directed to a chair that is preferably used as (i) a standard chair, (ii) a recliner in which a seat back pivots relative to a seat, (iii) a tilt chair where the seat and seat back pivot as an integral unit relative to the frame, or (iv) a chair that includes both tilt and recline functions.
  • a chair that is preferably used as (i) a standard chair, (ii) a recliner in which a seat back pivots relative to a seat, (iii) a tilt chair where the seat and seat back pivot as an integral unit relative to the frame, or (iv) a chair that includes both tilt and recline functions.
  • These various types of chairs are desired for use in an institutional setting such as a health care facility, nursing home, or the like.
  • the chair typically includes small diameter caster wheels that allow the occupant to remain seated in the chair while being transported from one location to another.
  • Comfort to the user/patient is a primary concern.
  • the user often spends extended periods of time in these chairs so that the chair must be adapted to different uses and long-term comfort.
  • the prior art has presented a number of different chair configurations, there is still a demand for a simple, economical product that is easily serviced or maintained, is durable, offers a wide variety of options, and is comfortable to use.
  • an institutional recliner chair having a seat and a seat back connected thereto, the seat back comprising:
  • an institutional chair comprising:
  • an institutional recliner chair comprising:
  • a seat back of the chair has an open-center, generally U-shaped frame over which a breathable liner extends for supporting the user.
  • the liner can be adjusted for altering the tension.
  • straps secure the liner to the chair and the straps may be individually adjusted by through a closable opening in the upholstery.
  • the seat may include a rigid pan which can receive a custom cushion beneath the upholstery.
  • Guards may be provided beneath the arm rests, which may be adjustable, and the guards aid in supporting the user in a lateral direction and prevent clothing from interfering with the reclining and tilt mechanisms.
  • Such a chair can be a comfortable recliner that is easily and economically manufactured and provides a number of beneficial features.
  • Yet another advantage is the breathability of the chair material which provides ventilation to the user.
  • Still another advantage of the invention resides in the adjustability of the chair to the individual user.
  • Figure 1 is a perspective view of a preferred embodiment of the invention.
  • Figure 2 is an elevational view of the chair in an upright position with the ottoman extended and tilt and recline positions of the chair being illustrated in phantom.
  • Figures 3A-3D are partial elevational views illustrating closed to full open positions of the leg rest.
  • Figure 4A is an exploded perspective view of the individual components of the seat back.
  • Figure 4B is a perspective view of an alternative tensioned liner that may be used in the seat back.
  • Figure 5 is a perspective view of the seat and leg rest, with a leg rest liner shown in a disassembled position.
  • Figure 6 is a perspective view of an arm rest particularly showing the adjustable nature thereof.
  • Figure 7 is a perspective view of the chair showing the use of various bolsters with the chair.
  • Figure 8 is a view of a rear of the seat back illustrating the mounting assembly for storing the tray.
  • the chair A includes a seat 10 and a seat back 12 received on a generally rigid frame 14.
  • the frame for example, is a metal tubular construction defined by a pair of mirror-image side frame assemblies 16, 18 that are interconnected by cross members 20.
  • Front and rear portions of the side frame assemblies include small diameter wheels, preferably caster wheels 30, 32 that can rotate through 360°.
  • the front caster wheels 30 include a steering locking member 34 so that the casters can be locked against rotation about a vertical axis.
  • the rear caster wheels 32 on the other hand, preferably have a brake locking member 36 associated therewith so that an attendant can use his foot to selectively depress member 36 and lock the rear wheels against rotation. It will be appreciated, however, that the invention is not limited to wheels that may be selectively locked for braking or steering purposes.
  • Arm rests 40 extend from the side frame assemblies on opposite sides of the seat 10. As will be appreciated, the arm rests are identical in structure so that description of one is applicable to the other, unless particularly noted otherwise. In one embodiment (not shown), the arm rests are fixed structures that form an integral part of the side frame assemblies. In the embodiment illustrated in the accompanying drawings, each arm rest includes a pair of posts 42 that are telescopically received within upstanding sleeves formed on the side frame assemblies 16, 18. With additional reference to Figure 6, it is evident that each post 42 includes a series of spaced openings 44 that advantageously allow for selective height adjustment of the arm rest relative to the frame.
  • An arm rest release lever 46 is provided on one of the sleeves of each side frame assembly and the lever extends through one of the adjustment openings 44 in the post to lock the arm rest at a desired height. By releasing the lever, the height of the arm rest can be selectively raised and lowered as desired.
  • Figure 2 illustrates the reclining and tilt features associated with the chair.
  • the tilt and recline features may be provided as options to a standard chair (i.e. one in which the seat and seat back are in a fixed, upright relationship) either individually or in combination.
  • a pair of release handles 50a, 50b are mounted on a push bar 52 secured to the seat back 12.
  • the push bar 52 is a separate component bolted on to the seat back frame that allows an attendant to easily push and maneuver the chair, a feature that is notably lacking in many prior art arrangements.
  • Associated with each handle 50 is a cable or wire that extends to an expansible chamber device, such as a gas cylinder 54, 56, disposed beneath the seat.
  • the cylinders are of conventional structure and are schematically represented in Figure 2.
  • the first cylinder 54 is used with the reclining function of the chair. Particularly, a first end 54a of the cylinder is mounted to a bracket associated with a lower end of the seat back 12. A second end 54b of the cylinder is secured to a bracket preferably located underneath the seat 10 adjacent the front edge thereof.
  • the cylinder counterbalances the weight associated with the occupant so that an attendant can easily recline the seat back relative to the seat merely by actuating the handle 50a.
  • the second cylinder 56 includes a first end 56a secured to a bracket that extends from underneath a rear portion of the seat 10.
  • a second end 56b is secured to a bracket associated with the frame, for example, a cross 5 member 20.
  • Figures 3A-3D illustrate operation of a leg rest or ottoman 60 associated with the chair.
  • the leg rest 60 is pivotally connected to a bracket 62 depending downwardly from and disposed under a front edge of the seat. By securing the leg rest to the bracket 62, the leg rest travels with the seat throughout its range of tilting movement.
  • a series of links work together as a scissors-type assembly 64 to selectively extend and retract the leg rest between a storage position (Fig. 3A), a one-quarter open position (Fig. 3B), a three-quarter open position (Fig. 3C), and a fully open position (Fig. 3D).
  • the scissors-type geometry of the linkage assembly effects a constant chord length across the ottoman that keeps the upholstery tensioned, i.e., the upholstery does not sag, when the mechanism is selectively extended.
  • Figure 5 illustrates the linkage assembly 64 in greater detail. It includes a ratchet-type slot 66 at an end of the linkage assembly opposite that of actuating handle 68 to provide discrete, selective extension to the positions shown in Figures 3A-3D.
  • Figure 4A shows the preferred seat back construction in which a generally U-shaped frame 80 having an open center is used.
  • the rigid frame 80 includes first and second side portions 82, 84 that are interconnected at a first or upper end by upper frame portion 86.
  • the frame portions are integrally formed from a single component that is bent in the designed configuration.
  • structural separate elements could be secured together to define, in combination, a generally U-shaped rigid frame that has an open center.
  • the frame 80 is also preferably closed at its second or lower end by a cross member 88 for strength purposes.
  • the U-shaped member has a contoured portion that provides an angle or slope to the seat back for comfort.
  • the liner Received over the rigid frame is a tensioned, open pore or mesh liner 92.
  • the liner has a generally planar first or front portion and a second or rear portion that are interconnected along three peripheral edges of the rectangular conformation to define a pocket structure.
  • This pocket structure permits the liner to be easily slid over the frame and straps in a direction from the frame portion 86 toward the cross member 88.
  • Hand straps 94 are provided adjacent the open base of the liner to facilitate advancing the liner over the seat back frame.
  • the liner provides breathability to the chair, allowing air circulation to the user in a manner akin to a rope hammock.
  • the breathable nature of the liner is particularly desired when used in conjunction with a breathable upholstery, since it adds an additional aspect of comfort heretofore unavailable in chairs of this type.
  • the tensioned liner though, still provides a comfortable surface without using foam that distributes the weight of the user over the entire surface and eliminates pressure points.
  • the liner includes straps 96 that may be individually adjusted to alter the tension of the liner ( Figure 4B).
  • An upholstery portion 98 has a similar configuration to that of the liner. That is, planar front and rear portions are connected along three edges to define a pocket configuration that is easily slid over the top of the frame and urged toward the cross member 88. Any suitable upholstery material can be used and it is preferably formed of a breathable material to take advantage of the breathable tensioned liner. Alternatively, the upholstery includes padding incorporated into the front portion to provide a cushioning effect for the user.
  • the upholstered member 98 also includes a closable opening 100 that can be used in conjunction with the alternative liner of Figure 4B.
  • the opening 100 provides selective access to the straps for desired adjustment, i.e., tightening or loosening of the individual straps, to alter the firmness at selected locations along the seat back without having to remove the seat back from the chair.
  • a pair of openings 102a, 102b are also provided in the rear face of the upholstery.
  • the openings 102a, 102b receive cables associated with the tilt and recline cylinders. That is, the individual wires extend from the actuating handles 50a, 50b, through the openings 102a, 102b, respectively, beneath the remainder of the upholstery and exit the open base end of the upholstery before proceeding to the cylinders mounted beneath the seat.
  • the seat includes a rigid pan, such as a planar metal pan 110 having upturned edges, that defines a shallow cavity.
  • the cavity is adapted to receive a custom cushion 112, such as described in U.S. Patent No. 5,513,899. Because an occupant may spend extended periods of time in the chair, incorporating a custom cushion into the chair is preferred.
  • the upholstery for the seat and leg rest is easily received over the cushion 112 and leg rest 60 as one continuous piece 114. Thus, the upholstery can be quickly removed from the seat and a different cushion placed on the pan 110.
  • the leg rest also includes a tensioned open pore or mesh liner l16.
  • the liner is received over a generally U-shaped leg rest frame 118 prior to positioning the upholstery over the seat and leg rest.
  • the tensioned nature of the liner provides sufficient support for the open center leg rest frame and the breathable material used for the liner and the upholstery provides a comfortable chair for the user.
  • bolsters are shown in Figure 7, such as a head bolster 120 that may be filled with a foam or styrene bead material. Straps 122 secure the head bolster to the seat back.
  • a body bolster 124 includes straps 126 that uses a hook and loop-type fastener to secure the body bolster to the seat back.
  • pelvic bolsters 128 may be required for other users. These bolsters are typically situated adjacent rear portions of the arm rests. Thus, and for reasons to be described further below, a guard is provided beneath each arm rest to maintain adequate support for the bolsters.
  • the guards or clothing guards 130 are preferably secured to the underside of the adjustable arm rests and extend in a vertical plane between the seat and side frame assemblies.
  • the guards may be formed of a material such as plastic sheet that prevents the user's clothing from falling beneath the seat and inadvertently becoming tangled in the recline and tilt mechanism. Since the guards are secured to the underside of the adjustable arm 5 rests, the clothing guard must be sized to accommodate the various heights of the arm rests.
  • the guards extend rearwardly a sufficient amount so that if the seat back is reclined or the seat is tilted relative to the frame in the different styles of chairs, clothing still is maintained inboard of the seat and cannot pass between the seat/seat back and the clothing guard.
  • FIG. 8 illustrates a mounting assembly for storing a tray. Trays are typically provided with these types of chairs, again, for the convenience of the user. The is details of the tray and its connection to the underside of the arm rests is well known in the art so that further discussion is deemed unnecessary.
  • the mounting assembly includes a bracket 140 secured to cross member 88 of the seat back frame. The bracket has a free end 142 that pivots outwardly so that the tray is received between the bracket and the seat back. Additionally, an adjustable support strap 144 having an adjustable buckle 146 is provided adjacent the push handle to secure an upper portion of the tray against the seat back.
  • Still another feature associated with the chair is the swaged ends 150 of the push handle.
  • the handle ends have a reduced cross-section that allows a conventional grip to be pushed onto the handle from either end. This eliminates the need to provide a telescoping assembly defined by cooperating tubular portions that is often used for the push handle.
  • the individual grips have an ergonomic effect of suggesting proper placement of the hands on the grip, as opposed to a grip that extends over the entire length of the push handle.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dentistry (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
EP98308023A 1997-10-06 1998-10-01 Mehrfach verstellbarer Lehnstuhl Withdrawn EP0908163A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US94417297A 1997-10-06 1997-10-06
US944172 1997-10-06

Publications (2)

Publication Number Publication Date
EP0908163A2 true EP0908163A2 (de) 1999-04-14
EP0908163A3 EP0908163A3 (de) 2000-04-05

Family

ID=25480937

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98308023A Withdrawn EP0908163A3 (de) 1997-10-06 1998-10-01 Mehrfach verstellbarer Lehnstuhl

Country Status (2)

Country Link
EP (1) EP0908163A3 (de)
CA (1) CA2239737A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10161624C1 (de) * 2001-12-14 2002-11-28 Herbert Brustmann Fahrbarer Stuhl für den Krankentransport
WO2015034371A1 (en) * 2013-09-06 2015-03-12 Alu Rehab As Detachable tie bar of a wheelchair and tilting device for the seat of a wheelchair

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5513899A (en) 1991-11-13 1996-05-07 Invacare Corporation Seat cushion for wheelchairs

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1710821A (en) * 1926-11-30 1929-04-30 J M Hunt Wheel chair
US2823731A (en) * 1956-02-13 1958-02-18 Herbert W Miller Article of furniture
US4721321A (en) * 1982-11-16 1988-01-26 Invacare Corporation Wheelchair with adjustable rear canes
US5476308A (en) * 1995-05-17 1995-12-19 St. Germain; Robert J. Occupant-support fabric for deck or lawn-type tubular chair frame
US5897462A (en) * 1997-04-18 1999-04-27 St. Germain; Robert J. Exercise apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5513899A (en) 1991-11-13 1996-05-07 Invacare Corporation Seat cushion for wheelchairs

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10161624C1 (de) * 2001-12-14 2002-11-28 Herbert Brustmann Fahrbarer Stuhl für den Krankentransport
EP1319381A2 (de) 2001-12-14 2003-06-18 Herbert Brustmann Fahrbarer Stuhl für den Krankentransport
WO2015034371A1 (en) * 2013-09-06 2015-03-12 Alu Rehab As Detachable tie bar of a wheelchair and tilting device for the seat of a wheelchair

Also Published As

Publication number Publication date
EP0908163A3 (de) 2000-04-05
CA2239737A1 (en) 1999-04-06

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