EP0109258A2 - Improvements relating to back supporting cushions for seats - Google Patents

Improvements relating to back supporting cushions for seats Download PDF

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Publication number
EP0109258A2
EP0109258A2 EP83306826A EP83306826A EP0109258A2 EP 0109258 A2 EP0109258 A2 EP 0109258A2 EP 83306826 A EP83306826 A EP 83306826A EP 83306826 A EP83306826 A EP 83306826A EP 0109258 A2 EP0109258 A2 EP 0109258A2
Authority
EP
European Patent Office
Prior art keywords
central area
cms
back supporting
supporting cushion
backing sheet
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Withdrawn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
EP83306826A
Other languages
German (de)
French (fr)
Other versions
EP0109258A3 (en
Inventor
James Putnam
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0109258A2 publication Critical patent/EP0109258A2/en
Publication of EP0109258A3 publication Critical patent/EP0109258A3/en
Withdrawn legal-status Critical Current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
    • 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
    • A47C7/425—Supplementary back-rests to be positioned on a back-rest or the like

Definitions

  • This invention relates to back supporting cushions for seats and which are fitted as loose cushions to the backs of existing seats.
  • the object of the invention is to provide a back supporting cushion which can be used as a support for the back of a sitter in the manner of an orthopaedic back support.
  • a back supporting cushion has a rigid backing sheet and a body of resilient material disposed against said backing sheet for location against the back of a sitter and having a central area which in its upward extension is convexly curved on its surface remote from the backing sheet and two upwardly extending side supports, one on each side of the central area and which project forwardly of the central area.
  • Said central area may be formed by a single piece of material or it may be in the form of three adjoining and vertically extending sections.
  • the two outer sections are similar and the central section extends higher than the two outer sections.
  • the back supporting cushion comprises a rigid backing sheet 1 for example of plywood. Secured to the backing sheet 1 by adhesive is a body of resilient material for example of foam rubber or synthetic foamed material. A cushion cover (not shown) is tailored to fit over the cushion.
  • the body has a central area 2 and two similar side supports 3, one on each side of the central area 2 and which project forwardly of the central area 2.
  • the side supports 3 are made of a harder material, i.e. are less spongy, than the central area 2; for example, they are made of material known as 81b chip foam.
  • the central area 2 is in three adjoining and upwardly extending sections, namely a central section 4 and two similar outer sections 5 and 6. Each of the sections 4 to 6 is convexly curved in its upward extension.
  • the central section 4 extends higher than the two outer sections 5 and 6 and provides full support of the spine of a person sitting in the seat. Since the outer sections 5 and 6 end below the central section 4 the shoulder blades of a sitter can be comfortably accommodated on either side of the central section 4.
  • a typical construction of back supporting cushion in accordance with the invention and for use as a domestic cushion has the following dimensions. Its width a is 11 inches (27.94 cms) and its height b is 131 ⁇ 2 inches (34.29 cms).
  • the width d of the central section 4 is 4 inches (10.16 cms) and the width e of the outer sections 5 and 6 is 21 ⁇ 2 inches (6.35 cms).
  • the height of the central section 4 is 131 ⁇ 2 inches (34.29 cms) since this corresponds to b and the height f of the two outer sections 5 and 6 is 117 ⁇ 8 inches (30.16 cms).
  • the maximum depth h of the sections 4, 5 and 6 is 2 inches (5.08 cms) and their depth i at the bottom 3 ⁇ 4 inches (1.9 cms).
  • the height of the side supports 3 is 11 7 / 8 inches (30.16 cms) since this corresponds to f and their maximum depth k is 21 ⁇ 2 inches (6.35 cms).
  • the back supporting cushion being a loose cushion can be adjusted vertically so that the back of a- sitter is most comfortably located against the central area 2.
  • cushions in accordance with the invention can also be used on car seats.
  • the width a can be approximately the safe but the height b is 8 inches (20.32 cms).
  • the three sections 4, 5 and 6 all have the same height b of 8h inches (21.59 cms) or the central area 2 can be formed of a single piece of material.
  • the maximum depth h of the central area 2 is 13 ⁇ 4 inches (3.17 cms) and the depth d at the bottom is 3 ⁇ 4 inches (1.9 cms).
  • the height f of the side supports 3 is 8 inches (20.32 cms) and their maximum depth is 17 ⁇ 8 inches (4.76 cms).
  • side supports 3 having the rather full curve at their upper ends they can have a shallower curve as shown in chain-dotted line at 8 in Figure 2.

Landscapes

  • Mattresses And Other Support Structures For Chairs And Beds (AREA)

Abstract

A back supporting cushion for use as a loose cushion on seats, comprising a rigid backing sheet (1) and a body of resilient material disposed against said backing sheet for location against the back of a sitter and having a central area (2) which in its upward extension is convexly curved on its surface remote from the backing sheet (1) and two upwardly extending side supports (3), one on each side of the central area and which project forwardly of the central area. The central area (2) preferably is in the form of three adjoining and vertically extending sections, the two outer sections (5 and 6) being similar and the central section (4) extending higher than the two outer sections (5 and 6). Preferably the side supports (3) are of a harder material than the central area (2).

Description

  • This invention relates to back supporting cushions for seats and which are fitted as loose cushions to the backs of existing seats.
  • The object of the invention is to provide a back supporting cushion which can be used as a support for the back of a sitter in the manner of an orthopaedic back support.
  • According to the invention a back supporting cushion has a rigid backing sheet and a body of resilient material disposed against said backing sheet for location against the back of a sitter and having a central area which in its upward extension is convexly curved on its surface remote from the backing sheet and two upwardly extending side supports, one on each side of the central area and which project forwardly of the central area.
  • Said central area may be formed by a single piece of material or it may be in the form of three adjoining and vertically extending sections. Preferably in this case the two outer sections are similar and the central section extends higher than the two outer sections.
  • One constructions of back supporting cushion in accordance with the invention will now be described by way of example with reference to the accompanying drawings in which:
    • Figure 1 shows a perspective view of the back supporting cushion,
    • Figure 2 shows a side view, and
    • Figure 3 shows a plan view from above.
  • Referring now to the drawings, the back supporting cushion comprises a rigid backing sheet 1 for example of plywood. Secured to the backing sheet 1 by adhesive is a body of resilient material for example of foam rubber or synthetic foamed material. A cushion cover (not shown) is tailored to fit over the cushion.
  • The body has a central area 2 and two similar side supports 3, one on each side of the central area 2 and which project forwardly of the central area 2. The side supports 3 are made of a harder material, i.e. are less spongy, than the central area 2; for example, they are made of material known as 81b chip foam.
  • The central area 2 is in three adjoining and upwardly extending sections, namely a central section 4 and two similar outer sections 5 and 6. Each of the sections 4 to 6 is convexly curved in its upward extension. The central section 4 extends higher than the two outer sections 5 and 6 and provides full support of the spine of a person sitting in the seat. Since the outer sections 5 and 6 end below the central section 4 the shoulder blades of a sitter can be comfortably accommodated on either side of the central section 4.
  • A typical construction of back supporting cushion in accordance with the invention and for use as a domestic cushion has the following dimensions. Its width a is 11 inches (27.94 cms) and its height b is 13½ inches (34.29 cms). The width d of the central section 4 is 4 inches (10.16 cms) and the width e of the outer sections 5 and 6 is 2½ inches (6.35 cms). The height of the central section 4 is 13½ inches (34.29 cms) since this corresponds to b and the height f of the two outer sections 5 and 6 is 11⅞ inches (30.16 cms). The maximum depth h of the sections 4, 5 and 6 is 2 inches (5.08 cms) and their depth i at the bottom ¾ inches (1.9 cms). The height of the side supports 3 is 117/8 inches (30.16 cms) since this corresponds to f and their maximum depth k is 2½ inches (6.35 cms).
  • In use, the back supporting cushion, being a loose cushion can be adjusted vertically so that the back of a- sitter is most comfortably located against the central area 2.
  • In addition to having domestic use, cushions in accordance with the invention can also be used on car seats. However, in view of the space constraints in a car, a cushion having the dimensions set out above would probably be too large. Thus, for use as a car cushion the width a can be approximately the safe but the height b is 8 inches (20.32 cms). The three sections 4, 5 and 6 all have the same height b of 8h inches (21.59 cms) or the central area 2 can be formed of a single piece of material. The maximum depth h of the central area 2 is 1¾ inches (3.17 cms) and the depth d at the bottom is ¾ inches (1.9 cms). The height f of the side supports 3 is 8 inches (20.32 cms) and their maximum depth is 1⅞ inches (4.76 cms).
  • As an alternative to the side supports 3 having the rather full curve at their upper ends they can have a shallower curve as shown in chain-dotted line at 8 in Figure 2.

Claims (8)

1. A back supporting cushion for use as a loose cushion on seats, comprising a rigid backing sheet and a body of resilient material disposed against said backing sheet for location against the back of a sitter and having a central area which in its upward extension is convexly curved on its surface remote from the backing sheet and two upwardly extending side supports, one one each side of the central area and which project forwardly of the central area.
2. A back supporting cushion according to Claim 1, wherein said central area is in the form of three adjoining and vertically extending sections, the two outer sections being similar and the central section extending higher than the two outer sections.
3. A back supporting cushion according to Claim 1 or Claim 2, wherein said side supports are of a harder material than the central area.
4. A back supporting cushion according to any one of Claims 1 to 3, wherein the maximum depth h of the central area is in the range 3 to 5.5 cms, its maximum height b is in the range 21 to 35 cms. and its width is of the order of 10 cms.
5. A back supporting cushion according to Claims 2 and 4, wherein said central section has a height b of the order of 34 cms. and said two outer sections have a height f of the order of 30 cms.
6. A back supporting cushion according to Claim 4 or Claim 5, wherein said side supports have a maximum depth of the order of 6 cms.
7. A back supporting cushion according to Claims 5 and 6, wherein said side supports have a maximum height f of the order of 30 cms.
8. A back supporting cushion according to Claim 1 and having the shape shown in the accompanying drawings and the dimensions a to k specified in the aforegoing description.
EP83306826A 1982-11-13 1983-11-09 Improvements relating to back supporting cushions for seats Withdrawn EP0109258A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8232481 1982-11-13
GB8232481 1982-11-13

Publications (2)

Publication Number Publication Date
EP0109258A2 true EP0109258A2 (en) 1984-05-23
EP0109258A3 EP0109258A3 (en) 1985-05-15

Family

ID=10534251

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83306826A Withdrawn EP0109258A3 (en) 1982-11-13 1983-11-09 Improvements relating to back supporting cushions for seats

Country Status (2)

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EP (1) EP0109258A3 (en)
GB (1) GB2130086B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GR910100165A (en) * 1991-04-17 1993-03-16 Georgios Sapounas Urethane formulated seat cushion
US20120280545A1 (en) * 2011-05-03 2012-11-08 Danielle Vernon Thoracic back support
US8702175B2 (en) * 2011-08-31 2014-04-22 Toyota Boshoku Kabushiki Kaisha Vehicle seat

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5452940A (en) * 1993-08-04 1995-09-26 Maier; Edmund K. Pressure relief back cushion
US6226818B1 (en) 1999-09-27 2001-05-08 Maly Rudick Multiple firmness pillow
CN105640141A (en) * 2016-03-31 2016-06-08 亓关霖 Physiotherapy mattress and household spinal physiotherapy combined mattress

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3205010A (en) * 1964-05-19 1965-09-07 William F Schick Seat cushion
US3720441A (en) * 1971-04-07 1973-03-13 Variety Prod Inc Double curvature plywood sheet for back rest
EP0011816A1 (en) * 1978-11-29 1980-06-11 Metzeler Schaum Gmbh Backrest with a ventilated cushion for car seats

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE532471A (en) * 1953-10-21
DE1771687U (en) * 1958-05-28 1958-08-07 Dunlopillo G M B H SUPPORT FOR THE BACKRESTS OF SEATING.
GB1173209A (en) * 1967-06-23 1969-12-03 Henry Ambrose Improvements in or relating to Back Supports
GB1294091A (en) * 1968-09-30 1972-10-25 Bernard Curtis Watkin Improvements in or relating to lumbar support pads
GB1303852A (en) * 1970-05-05 1973-01-24 Universal Oil Prod Co
US3904242A (en) * 1973-12-28 1975-09-09 Harter Corp Chair construction and method for producing same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3205010A (en) * 1964-05-19 1965-09-07 William F Schick Seat cushion
US3720441A (en) * 1971-04-07 1973-03-13 Variety Prod Inc Double curvature plywood sheet for back rest
EP0011816A1 (en) * 1978-11-29 1980-06-11 Metzeler Schaum Gmbh Backrest with a ventilated cushion for car seats

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GR910100165A (en) * 1991-04-17 1993-03-16 Georgios Sapounas Urethane formulated seat cushion
US20120280545A1 (en) * 2011-05-03 2012-11-08 Danielle Vernon Thoracic back support
US8931837B2 (en) * 2011-05-03 2015-01-13 Danielle Vernon Thoracic back support
US8702175B2 (en) * 2011-08-31 2014-04-22 Toyota Boshoku Kabushiki Kaisha Vehicle seat

Also Published As

Publication number Publication date
GB2130086A (en) 1984-05-31
GB2130086B (en) 1986-07-16
EP0109258A3 (en) 1985-05-15
GB8329925D0 (en) 1983-12-14

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