WO1992018036A1 - Couverture utilisee pour dormir - Google Patents

Couverture utilisee pour dormir Download PDF

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Publication number
WO1992018036A1
WO1992018036A1 PCT/GB1992/000740 GB9200740W WO9218036A1 WO 1992018036 A1 WO1992018036 A1 WO 1992018036A1 GB 9200740 W GB9200740 W GB 9200740W WO 9218036 A1 WO9218036 A1 WO 9218036A1
Authority
WO
WIPO (PCT)
Prior art keywords
cover
elements
insulation
bags
operable
Prior art date
Application number
PCT/GB1992/000740
Other languages
English (en)
Inventor
Ian Robert Fothergill
Original Assignee
Ian Robert Fothergill
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 claimed from GB919108714A external-priority patent/GB9108714D0/en
Application filed by Ian Robert Fothergill filed Critical Ian Robert Fothergill
Priority to EP92909032A priority Critical patent/EP0607148A1/fr
Publication of WO1992018036A1 publication Critical patent/WO1992018036A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G9/00—Bed-covers; Counterpanes; Travelling rugs; Sleeping rugs; Sleeping bags; Pillows
    • A47G9/02—Bed linen; Blankets; Counterpanes
    • A47G9/0207—Blankets; Duvets

Definitions

  • a cover for use in sleep comprises thermal insulation characterized by means for adjusting the thermal insulation provided by the cover.
  • the adjustment may be progressive.
  • the insulation may comprise a plurality of separ ⁇ ate insulator elements movable relative to each other. There may be a support membrane for the elements. There may be one or more fixed insulator elements. In one arrangemen the fixed elements are spaced, and the movable elements are movable to vary the extent which they overlap the spaces.
  • the operable means may comprise a common means operable to move a plurality of elements. There may be means operable to move the elements apart and separate means operable to move the elements together.
  • the operable means may comprise manually operable pull devices.
  • the insulation may comprise a plurality of insul ⁇ ator units extending lengthwise of the cover, each unit containing the insulator elements.
  • the elements may form two layers and means for holding the layers in selected positions of relative adjustment.
  • the insulation com ⁇ prises a plurality of separate insulator elements, and means for deforming the elements.
  • the elements may be defor able laterally. There may be means for indicating the extent of adjustment.
  • the invention may be applied to a bed cover in the form of a continental quilt or duvet, or to a sleeping bag.
  • the invention may be performed in various ways and some specific embodiments with possible modifications will now be described by way of example with reference to the accompanying drawings, in which;
  • Figs. 1 to 3 are sections illustrating' insulators
  • Fig. 4 is a plan view of a bed cover
  • Fig. 5 is a section on the line 5-5 of Fig. 4
  • Fig. 6 is a section of cover in a different condition
  • Fig. 7 is a view similar to Fig. 6 of a modification
  • Fig. 8 is a plan view of another cover;
  • Fig. 9 is a section on the line 9-9 of Fig. 8;
  • Fig. 10 is similar to Fig. 9 with the cover adjusted;
  • Fig. 11 shows a modification
  • Fig. 12 is a schematic plan view of another arrangement
  • Fig. 13 illustrates a section of Fig. 12;
  • Fig. 14 is a plan view of a further cover;
  • Fig. 15 is a plan view of another cover; and
  • Figs.16,17 are sections of different arrangements .
  • Fig. 1 represents a section through an insulator of constant thickness t and uniform thermal resistance through its thickness. It can be shown that if the insulation is redistributed to create variations in the thickness t then the average insulation value of ' this new configuration will be less than that for the uniform case. By progressively increasing the extent of thickness non-uniformity a corresponding reduction in insulation value will result as shown in Figs. 1,2 and 3.
  • Figs. 4 and 5 show a possible duvet configuration with facilities for adjusting the insulation either uniformly or selectively.
  • This example shows an outer low thermal insulation containment bag 10 sewn along lines 11 into a series of parallel closed guide channels or regions 12.
  • each channel 12 Located within each channel 12 is a regular sequence of fixed equispaced insulator segments or elements 14 (unshaded) connected by flexible straps 15 and separated by gaps 16 typically equal to the length of a segment 14. Also within each channel 12 is situated a row of movable insulator segments or elements 18 (shaded) with the same separations as the corresponding fixed segments 14. These movable segments 18 are connected end to end by a continuous flexible strap 20 (shown broken line) which emerges through, dedicated exit ports 22 and 24 in the cover 10 at the opposite ends of each channel 12. Only one strap 20 is shown in Fig. « The channels 12 normally extend lengthwise in the direction from head to foot but could extend laterally across the duvet and bed.
  • the bag 10 is shown spaced from elements 14,18 for clarity but in practice would be a fairly close fit around the insulating elements to resist unwanted adjustment but permit desired adjustment. Under maximum insulation conditions these movable segments 18 completely fill the gap ' s 16 formed by the corresponding fixed segments 14. A gentle pull on the emergent connecting strap 20 will cause each movable segment 18 in the corresponding channel 12 to ride over its fixed neighbour in the direction of pull as shown in Fig. 6. This will generate a row of voids 23 each of which will increase in size with the displacement of the appropriate connecting strap 20. These voids 23 represent regions of low thermal resistance creating an overall reduction in the insulation of the appropriate channel 12. The magnitude of this reduction will increase with the size of void and hence with the displacement of the connecting strap. By applying an equal displacement to each strap 20 a proportional overall change in insulation over the area of the duvet will result. Changes in insulation in the opposite sense may be achieved by displacing the connecting straps in the opposite direction by pulling their other ends.
  • non-uniform insulation values across the width of the duvet may be produced by selective displacement of the relevant connecting straps 20. This may prove useful for a double bed duvet if the insulation requirements of the occupants are different.
  • the edge containing ports 24 may be the foot end. Different insulation values in a direction parallel to the length of channel 12 may be generated by displacement of a limited number of adjacent movable segments 18 within each channel. For example it may prove desirable to provide a higher insulation in the top (head) half of the duvet than the bottom (foot) half.
  • This selective change in insulation over the duvet length may be achieved by attaching a second set of straps 28 Fig. 7 to the edges 30 of those corresponding movable segments 26 defining the separation of the selected different insulation regions.
  • the insulating elements 14,18 may for example be of fibre, plastics or feathers in a wrapping, for example a cloth wrapping.
  • an insulating cover e.g. a duvet
  • the mean insulation of the cover has a greater value. If the insulation is re-distributed to become non- uniform over the area then the mean insulation of the duvet will be less than for the uniform case.
  • voids Open gaps or voids will yield the lowest insulation conditions. These voids have a dominant effect on the average thermal insulation of the duvet since heat flow through the duvet in response to a temperature difference across its thickness will concentrate in these voided zones. Any changes in the void fraction, i.e. the area of void as a fraction of the overall duvet area, will have a much greater effect on the mean insulation of the duvet than changes in the properties of the high insulation zones e.g. thermal insulation and density. It is possible therefore to induce small changes in void fraction and generate large changes in the mean insulation value of the duvet. Methods of inducing controlled changes in void fraction and hence comprehensive or selective insulation value of a duvet by simple adjustments to movable insulation segments have been described above. Other examples of ways of producing in a controlled and convenient manner changes in the value of overall or selective insulation will be described below with reference to Figs. 8 to 17.
  • All the methods to be described involve the use of a set of parallel elongated soft thermal insulation bags for extending along the length of the bed.
  • These bags may conveniently be a fabric wrapper or cover filled with hollow fibre, or feathers in line with conventional duvet insulating materials.
  • Lower insulation zones are created by causing adjacent insulation bags to be displaced bodily in a direction normal to their length, or to be deformed by a controlled amount.
  • the resultant localised "cooler” zones produced by this operation could produce discomfort to the occupant(s) of the bed.
  • one or two flexible fabric or other membranes or wrappings extending over the area of the bed and slightly beyond may be used.
  • the thermal insulation of such a membrane or membranes will still be negligible compared to that of the bags and though not quite as efficient as open zones the bags would still have a dominant influence on the mean or overall insulation value or characteristic of the duvet.
  • the membrane may lie under the adjustable insulation and could be a separate removable sheet or be secured to the insulation bags.
  • the membrane could be a bag enclosing adjustable insulation.
  • the membrane restricts convective flow and thus tends to reduce temperature variation under the membrane.
  • Simple adjustments can be made to obtain either an overall or selective change in duvet insulation, according to the requirements of the bed occupant(s). For example in the case of a double or king sized duvet one side could be adjusted to provide lower insulation and the other, higher insulation, as required.
  • an odd number of parallel insulation bags 40 are located over a flat fabric membrane 41 forming a support sheet.
  • the centre bag 42 is secured onto the support sheet 41 e.g. by sewing.
  • Each bag 40 has a set of pairs of fabric loops 43 regularly spaced along the length of the bag, the corresponding positions being the same in separate bags.
  • Light fabric straps 44 are fed through corresponding loops 43 and secured at their central 45 and outer 46 positions on the support sheet. This arrangement allows the bags to be manually displaced Fig. 10 in a controlled manner along the straps creating longitudinal voids 44 hence low insulation zones.
  • This process involves displacing the laterally outer bags 45a outwards, but because of the dominant effect of the lower insulation zones (corresponding to the voids) on the average insulation of the duvet, only small changes in displacement of the outer bags 45a are necessary, hence the overall increase in duvet width can be small enough to be accommodated in a standard duvet cover if this were required or provided.
  • the sheet 41 is omitted and if desired the centre bag 42 is movable on cord 44 •
  • the cords 44 and loops 43 are such that the bags 40, 42 do not undesirably slide on the cords.
  • the loops 43 are omitted and the cords 44 extend through the bags.
  • voids may be produced by gently displacing individual bags by hand.
  • equal void width changes between adjacent bags can be produced by connecting these bags to a set of common adjustment straps 47,49 Fig. 11 one set on each side of a fixed centre bag 42 Fig. 11.
  • the strap 47 includes portion 48 connected to individual bags via a loop 50, on an adjacent bag.
  • Tension in these adjustment straps 47 will produce equal displacements of all movable bags in the opposite direction to the strap displacement resulting in a reduction of void widths.
  • the outer bags 45a are displaced outwards.
  • a fabric support sheet 41 9,10 or a fabric support sheet 41. If, however, a support sheet is employed in order to suppress "cooler" zones, individual decorative covers (not shown) for the bags can be used to improve overall appearance if a conventional duvet cover is not used. If the support sheet 41 is not used, an outer duvet cover would be desirable, for reasons of comfort, handling stability, appearance and hygiene. With this transverse insulation adjustment it is advantageous, but not necessary to employ a removable duvet cover with side access to facilitate adjustment.
  • a series of smooth loops 53 are sewn along the edges 4 of each bag 40 in corresponding positions on adjacent bags.
  • An adjustment cord 55 for lacing is secured to one of the top (head) loops 50 on each of the adjacent bags and fed through the remaining sequence of loops as indicated in Fig. 12 before emerging from the base ends of the bags. If the exposed cord is displaced by the amount D by applying tension, then adjacent bags will be drawn together by an average amount D/N ' where N is the number of loops along the edge of the bag.
  • Other lacing arrangements can be used.
  • a second cord 54a (only one shown) can pass through loops 53 as shown dotted so that a more symmetrical adjusting force is applied to adjacent bags.
  • adjustable sliding cord stops or toggles 57 can be employed. When pushed against the exit loop 58 and locked into this position no further opening of the appropriate void can occur.
  • the laced bag arrangement would, for reasons of comfort, appearance and stability be fitted into a conventional duvet cover 59 Fig. 13 with a base access and with outer bags overhanging the side of the bed 60. This would create a light tension in the connecting cords opposing gap reduction under human-induced stresses.
  • the number of bags and the insulating system geometry would normally be chosen such that the laced bag configuration corresponding to the lowest in ⁇ ulation condition (maximum void width) would allow containment in a standard duvet cover, probably with the laterally outer overhanging bags in compressive contact with each other.
  • any membranes in the form of a support sheet or duvet cover In this case any local discomfort created by exposed straps connecting adjacent insulating bags could be avoided by providing soft padding of the straps.
  • the straps could be isolated from the occupant (s) by connecting adjacent insulation bags to a continuous highly permeable flexible membrane e.g. net, situated beneath the straps.
  • the methods described above involve displacing bags or elements bodily to generate lower insulation voids.
  • An alternative procedure to produce such voids is to deform the bags in a controlled manner.
  • a support sheet 62 In the arrangement of Fig. 14 there is a support sheet 62. Individual bags 40 are laid side by side from head to foot with adjacent edges in contact. The bags are stitched at 63 onto the support sheet along corresponding edges, except the centre bag which is stitched down the middle at 64. The other edges 65 are free to move. Attached to corresponding points on the free edges 65 are a series of adjustment straps 66 for right hand side and 67 for left hand side. Each strap from the centre bag passes under the appropriate set of bags under suitable access ports (not shown) in the stitching before emerging at the outer edge of the duvet. Tension on the straps will deform the connected bags in the direction of pull to an extent dependant upon the strap displacement.
  • a set of edge- contacting insulation bags 70 is again employed but these are stitched onto a support 71 along their mid- line positions 72. Adjustments are made from the foot end of the duvet. In this case low insulation or void zones are created in each bag independently of the others in the set. This is achieved by securing two cords or tapes 73 and 74 to opposite sides 75 and 76 at the head end of each bag and wrapping each pair around the respective bag in opposite directions through edge stitched loops 77 to form two helices of opposite sign. The pair of cords emerge from the foot of the duvet where they are secured together as a common cord 78. For reasons of clarity this helical cord arrangement has only been shown on one bag.
  • Controlled deformations of individual bags are obtained by applying tension to the emerging cords. This will reduce helical cord lengths, creating an increase in the area of the low insulation zone associated with each bag.
  • the selected bag adjustment is secured by using a lockable sliding toggle 79 which defines the emergent length of the adjustment cord. Reduced areas of low insulation zone may be produced by sliding the toggle back along the adjustment cord providing a free length of cord 80 between the toggle and the foot of the duvet. Gently patting the appropriate insulator segments will release any remaining tension in the helical cords and allow the insulator to return in part, or totally, to the undeformed state according to the adjustment on the control cord. In the arrangement of Figs. 16,17 insulation changes do not require adjustment within individual bags.
  • Two support sheets 90, 91 are employed each possessing an identical set of insulation secured there to with separations typically equal to the bag width.
  • the two support sheets are ove-rlaid with their respective bags parallel. If relative displacement of the bags is manually produced in a direction normal to their length by separating and then re-connecting the two sheets then different mean insulation values of the arrangement may be produced. For example, if the bags 84 Fig. 16 on the contacting support sheets coincide, then the associated low insulation zones 85 will also coincide, providing a relatively low insulation area and a consequent minimum insulation condition for the duvet. If high and low insulation zones are caused to coincide 86 in Fig. 17 then a state of maximum insulation will result. Conveniently the two support sheets may be formed from a single sheet resulting in a flattened tubular configuration.
  • any adjustments to the degree of overlap of corresponding bags can be stabilized using for example suitable fasteners or orthogonal strips 87 of hook and eye fasteners such as that sold under the trademark VELCRO along the edges of the support covers. It may also be necessary to fix suitable fasteners 88 or 'Velcro 1 to stabilizing cords 92 at the central regions of the duvet to prevent possible mis-alignment during sleep following human body movement. The fasteners 88 can be adjusted along the cords 92 to hold the sheets in the desired position of overlap.
  • the creation of low insulation zones can have a dominant effect on the overall insulation value of a duvet. This will minimise the influence of any changes in the properties of high insulation regions, e.g. an increase in their thickness or density which will have a relatively small effect on the overall insulation value of the duvet.
  • One way involves moving bodily one or more parallel insulating bags to generate voids or gaps between adjacent bags, either by hand or using suitable cord or tape adjusters.
  • the second involves inducing controlled deformation of individual or sets of parallel insulating bags in response to the displacement of adjustment cords or straps.
  • a single support sheet or conventional duvet cover can be applied.
  • duvet configuration have simple adjustments to provide continuous uniform or selective changes in insulation value over the area of the duvet.
  • the arrangements involve no addition or removal of insulation to or from the duvet.
  • the material may be deformed downwards; for example an upper central part of a bag can be arranged to be pulled downwards by pulling on straps 67.
  • the mean thickness of the duvet could be progress- ively reduced using a lacing arrangement through its thickness drawing the top and bottom surfaces towards each other when tension is produced in the laces. This could be over the whole area or at spaced regions.
  • the upper surface of the duvet may be provided with additional strips of fabric stiffer than the existing containment fabric; this will tend to spread the load imposed and generate a greater mean reduction in thickness for a given cord tension and hence increase the range of possible insulation adjustments.
  • adjustment or variation of the insulation can be in response to changing temperature conditions.
  • a temperature sensor 100 can be connected to an electric motor 101 to energize the motor 101 to pull on cords 67 if the sensed temperature exceeds a predetermined limit which could be adjustable.
  • This may have application for cot covers or medical use.
  • the invention is not restricted to duvets but can be applied also to sleeping bags, or example the invention can be applied to the upper part or the whole of a sleeping bag and the term bed cover is to be understood as including sleeping bags.
  • the edges of adjacent bags at their ends at 51 abut or are secured together as well as being secured to bags 93.
  • the deformability of the bags permits the adjustment or variation of void width.

Landscapes

  • Bedding Items (AREA)

Abstract

Une couverture utilisée pour dormir, telle qu'un duvet, comprend des moyens destinés à réguler ou à modifier le niveau d'isolation thermique que procure la couverture. Selon un agencement, une série de régions (12) sont définies par des lignes de couture (11), et à l'intérieur de ces régions se trouvent des éléments isolants fixes (14) et d'autres éléments isolants (18) qui peuvent être déplacés à l'aide de tirettes (20) de façon à être introduits dans des espaces (16) entre les éléments (14) et à sortir de ces espaces afin de modifier l'isolation globale de la couverture (10). Selon d'autres agencements, des sachets isolants séparés et parallèles s'étendent le long de la couverture sur un drap de support et peuvent être latéralement ajustés afin de créer des vides. Selon d'autres variantes, l'isolation est produite par des sachets séparés qui peuvent être déformés au moyen de tirettes externes, lesquelles peuvent comporter des couleurs indiquant le niveau de réglage. L'invention peut s'appliquer à des sacs de couchage.
PCT/GB1992/000740 1991-04-23 1992-04-22 Couverture utilisee pour dormir WO1992018036A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP92909032A EP0607148A1 (fr) 1991-04-23 1992-04-22 Couverture utilisee pour dormir

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB9108714.8 1991-04-23
GB919108714A GB9108714D0 (en) 1991-04-23 1991-04-23 A duvet
GB929206782A GB9206782D0 (en) 1991-04-23 1992-03-27 Bed covers
GB9206782.6 1992-03-27

Publications (1)

Publication Number Publication Date
WO1992018036A1 true WO1992018036A1 (fr) 1992-10-29

Family

ID=26298776

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1992/000740 WO1992018036A1 (fr) 1991-04-23 1992-04-22 Couverture utilisee pour dormir

Country Status (2)

Country Link
EP (1) EP0607148A1 (fr)
WO (1) WO1992018036A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2295543A (en) * 1994-12-01 1996-06-05 Ian Robert Fothergill Flat tubular covers for use in sleep the thermal insulation of which is adjustable by rotation of the tube
WO2003092451A1 (fr) * 2002-05-02 2003-11-13 Sanders Gmbh Couverture
WO2005016082A1 (fr) * 2003-08-16 2005-02-24 H. Brinkhaus Gmbh & Co. Kg Edredon
GB2411621A (en) * 2004-03-02 2005-09-07 Neil Saville A variable geometry variable insulation fabric
WO2010012826A2 (fr) * 2008-07-31 2010-02-04 Sanders Gmbh Couverture et produits apparentés, ainsi que fabrication de ceux-ci
US20140250596A1 (en) * 2013-03-05 2014-09-11 St. Geneve Fine Bedlinens Ltd. Bed cover
EP4223113A1 (fr) * 2022-02-07 2023-08-09 Sanders-Kauffmann GmbH Dispositif de revêtement

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE117224C (fr) * 1900-01-01
DE721628C (de) * 1936-09-17 1942-06-11 Ideal Steppdeckenfabrik Voelte Steppdecke aus einem in Abteilungen unterteilten Bezug und in den Abteilungen vorgesehenen, herausnehmbaren Einschuetten
GB2159050A (en) * 1984-05-22 1985-11-27 Alfra Manufacturing Company Li Quilt
DE3723926A1 (de) * 1987-07-20 1988-02-11 Angelika Roesner Bettdecke
WO1989006509A1 (fr) * 1988-01-12 1989-07-27 Tesch Guenter Couverture, notamment couverture de lit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE117224C (fr) * 1900-01-01
DE721628C (de) * 1936-09-17 1942-06-11 Ideal Steppdeckenfabrik Voelte Steppdecke aus einem in Abteilungen unterteilten Bezug und in den Abteilungen vorgesehenen, herausnehmbaren Einschuetten
GB2159050A (en) * 1984-05-22 1985-11-27 Alfra Manufacturing Company Li Quilt
DE3723926A1 (de) * 1987-07-20 1988-02-11 Angelika Roesner Bettdecke
WO1989006509A1 (fr) * 1988-01-12 1989-07-27 Tesch Guenter Couverture, notamment couverture de lit

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2295543A (en) * 1994-12-01 1996-06-05 Ian Robert Fothergill Flat tubular covers for use in sleep the thermal insulation of which is adjustable by rotation of the tube
WO2003092451A1 (fr) * 2002-05-02 2003-11-13 Sanders Gmbh Couverture
US6934985B2 (en) 2002-05-02 2005-08-30 Sanders Gmbh Cover
CN1326484C (zh) * 2002-05-02 2007-07-18 桑德斯有限公司 覆盖物
WO2005016082A1 (fr) * 2003-08-16 2005-02-24 H. Brinkhaus Gmbh & Co. Kg Edredon
GB2411621A (en) * 2004-03-02 2005-09-07 Neil Saville A variable geometry variable insulation fabric
WO2010012826A2 (fr) * 2008-07-31 2010-02-04 Sanders Gmbh Couverture et produits apparentés, ainsi que fabrication de ceux-ci
WO2010012826A3 (fr) * 2008-07-31 2010-04-01 Sanders Gmbh Couverture et produits apparentés, ainsi que fabrication de ceux-ci
AU2009275867B2 (en) * 2008-07-31 2012-04-26 Sanders Gmbh Cover and related products, and production thereof
CN102137607B (zh) * 2008-07-31 2014-05-14 桑德斯有限公司 罩以及相关的制品及其制造方法
US8769743B2 (en) 2008-07-31 2014-07-08 Sanders Gmbh Cover and related products, and production thereof
US20140250596A1 (en) * 2013-03-05 2014-09-11 St. Geneve Fine Bedlinens Ltd. Bed cover
US8978179B2 (en) * 2013-03-05 2015-03-17 St. Geneve Fine Bedlinens Ltd. Bed cover
EP4223113A1 (fr) * 2022-02-07 2023-08-09 Sanders-Kauffmann GmbH Dispositif de revêtement
WO2023148403A1 (fr) * 2022-02-07 2023-08-10 Sanders-Kauffmann Gmbh Dispositif de couverture

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