EP0378060A1 - An arrangement in connection with a water bag for a water mattress, and a method of manufacturing the same - Google Patents

An arrangement in connection with a water bag for a water mattress, and a method of manufacturing the same Download PDF

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Publication number
EP0378060A1
EP0378060A1 EP89850436A EP89850436A EP0378060A1 EP 0378060 A1 EP0378060 A1 EP 0378060A1 EP 89850436 A EP89850436 A EP 89850436A EP 89850436 A EP89850436 A EP 89850436A EP 0378060 A1 EP0378060 A1 EP 0378060A1
Authority
EP
European Patent Office
Prior art keywords
water bag
mattress base
portions
stated
framelike
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Withdrawn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
EP89850436A
Other languages
German (de)
English (en)
French (fr)
Inventor
Winfried Peter Barbulla
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 EP0378060A1 publication Critical patent/EP0378060A1/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Withdrawn legal-status Critical Current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
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/08—Fluid mattresses or cushions
    • A47C27/085—Fluid mattresses or cushions of liquid type, e.g. filled with water or gel

Definitions

  • the present invention relates to an arrangement of a water mattress, as stated in the preamble of the following independent claim 1, and a method of manufacturing the same.
  • Water beds and water mattresses are built with a water bag which sits on a support and is surrounded by a soft or firm frame.
  • Water bags with large or small depth of water are used. Water bags having a small depth of water are used in so called light weight water mattresses of the kind mentioned above.
  • the invention relates to a method of manufactur disposing such a water bag, which is achieved by the aid of the features stated in the subsequent independent method claim as well as in subsequent dependent claims.
  • top and bottom of the water bag consist of two sheets which are mutually connected by welding or glueing along their lateral edge portions, which two mutually connected sheets form a reinforcing framelike edge portion about the water bag, intended for being in contact with the top face portions of the mattress base around the recess of the latter.
  • a welded framelike edge portion is achieved about the lateral edges of the water bag which contributes to stiffen the lateral edges of the water bag towards the recess and top face portions of the mattress base and, consequently, there will be reduced wrinkle/fold formation of the top of the water bag and, thus, reduced hazard of ruptures of the material.
  • Such welding about the edges of the water bag top may be carried out on existing water bags which are, e.g. built from sleeve shaped material with a longitudinal weld, and two transversal welds at the head and foot ends of the water bag.
  • the latter are built from two sheets which are welded together, as stated above and in the following claim 1.
  • the sheets which consist of a flexible, waterproof and, preferably, weldable sheet material are combined about all lateral edges, e.g. by a flat weld.
  • the top sheet is plane, whereas the bottom sheet may either be plane or deep drawn by preliminary vacuum forming to form the above mentioned downwards curving bottom, or the bottom sheet may be shaped by corner cutting to provide the bottom sheet with a desired hollow shape.
  • the framelike edge portion In order to achieve better grip between mattress base and the framelike edge portion surrounding the water bag, it may be prudent to design the framelike edge portion with so large a width that it will hang down along the lateral faces of the mattress base in use, and the frame portions may be welded together so that all frame portions together form an enclosure surrounding the lateral faces of the mattress base. In order to achieve further improved grip between mattress base and frame portions of the bag, it is possible to extend said frame portions additionally so that they may be folded back beneath the mattress base and welded at the corners to form a convergence which will keep the water bag in place on the mattress base and substantially will reduce folding of the top of the water bag when the latter is loaded.
  • top and bottom sheets are used for manufacture of the water bag, which top and bottom sheets are welded together along their opposite longitudinal side portions, and at the head and foot ends by the aid of flat and/or lap welding to form the stiffening framelike edge portion.
  • top sheet or a bottom sheet which extends beyond the other sheet, it is possible to provide said wide frame portions which by the aid of folding and welding may form said frame enclosure to surround the sides of the mattress base, with further convergence beneath the mattress base.
  • a water bag for a water mattress comprises a flat top 1a, and a bottom 1b whichs is eventually curved downwards.
  • the water bag is intended for lying in contact with a recess 3 in a mattress base 2 and with its top portions 2a around recess 3, with its bottom and lateral portions 1c, as shown in Figure 2.
  • top of the water bag will form wrinkles or diagonal folds outwards from the edges of the water bag at the foot and head ends when water bag 1 is placed on mattress base 2.
  • top 1a and edge portions 1c of the water bag and partly adjacent portions of bottom 1b as well will be subjected to repeated movement which, together with a tension load on the material may cause ruptures of the material and water leakages.
  • water bag 1 is designed with a slightly more rigid surrounding framelike edge portion 4, as shown in Figure 4, which frame is provided when a top sheet 1a′ is welded to a bottom sheet 1b′, causing top and bottom sheets 1a′, 1b′ to form said more rigid frame 4 in the welded area.
  • the provided framelike edge portion 4 is shown in Figure 4.
  • Top sheet 1a′ is preferably plane, whereas bottom sheet 1b′ may be curved down in the lon­gitudinal and transversal directions, so that a shape corresponding to recess 3 in mattress base 2 is achieved.
  • bottom sheet 1b′ may be achieved by deep drawing in case of vacuum forming, or the sheet may be provided with corner cuts 1c providing bottom sheet 1b′ with said shape. If there is, e.g. a smaller distance between corner cuts 1c at the foot end of the water bag or corner cuts 1c at the head end of the water bag, a water bag with non-parallel lateral edges is achieved, as shown in Figure 5.
  • Such a design of the water bag in connection with a cor­responding design of recess 3 of mattress base 2 will cause a smaller volume of water in water bag 1 and, thus, a more lightweight water mattress.
  • the framelike edge portion 4 of water bag 1 may be designed with extended width of opposite frame portions 4a, 4b at the head and foot ends of the water bag, as shown in Figure 6, if desired, of both longitudinal lateral edges 4c,4d, as shown in Figure 7, or of all its edges, as shown in Figures 8 and 9.
  • the frame portions 4a, 4b, if desired 4c, 4d, or all wide frame portions are folded down between mattress base and frame in a bed where mattress base 2 is provided, the frame portions will be firmly clamped between mattress base and bed frame, which will cause good stabilization of the water bag 1 on mattress base 2, as well as reduced folding at the lateral edges of the water bag.
  • a frame enclosure 5 is formed which will surround the lateral faces 2b of mattress base 2. Flaps A which are formed in connection with welding, may be removed in connection with welding operations. A good form-fit is, thus, achieved for water bag 1 on mattress base 2, as well as good grip between mattress base and water bag. In order to achieve further stabilization of water bag 1 on mattress base 2, especially when the water mattress is to be used in beds without side frame pieces, the frame casing 5 may continue down beneath water mattress 2, as shown in Figure 11.
  • the lower portions 4a′ - 4d′ of frame casing 5 are, thus, folded 90 o inwards and welded together at the corners to provide a convergence 5a to form a frame along edge areas of the underside of mattress base 2.
  • the weight of the water mattress comprising a water bag with water and mattress base as well as the body weight of the user will, thus, urge said lower portion - convergence 5a - of the frame casing towards the foundation, which will hold frame casing 5 and, thus, framelike edge portion 4 of the water bag and water bag 1 proper in place in recess 3 of mattress base 2.
  • top sheet 1a′ and bottom sheet 1b′ of water bag 1 may be caried out in a number of different manners and by using various welds. By different localization of welds as regards the transition between top sheet and bottom sheet different properties may be achieved.
  • top sheet 1a′ is shown which is wider than bottom sheet 1b′.
  • Bottom sheet 1b′ is here welded to the underside of top sheet 1a′ by a flat weld 6.
  • bottom sheet 1b′ is wider than top sheet 1a′.
  • the top sheet is here welded to the bottom sheet by the aid of a lap weld 7. This means that the longitudinal edges of water bag 1 must be welded before the transversal welds are made at the head and foot ends of the water bag.
  • Figure 12c shows the same as Figure 12a, but with bottom sheet 1b′ welded to top sheet 1a′ by the aid of a lap weld 7.
  • Figure 12d shows the same as Figure 12b, but with lap weld 7 displaced further down towards the bottom of the water bag and adapted to a mattress base with approximately vertical recess sides.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Mattresses And Other Support Structures For Chairs And Beds (AREA)
  • Making Paper Articles (AREA)
EP89850436A 1989-01-09 1989-12-15 An arrangement in connection with a water bag for a water mattress, and a method of manufacturing the same Withdrawn EP0378060A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO890079 1989-01-09
NO89890079A NO890079L (no) 1989-01-09 1989-01-09 Anordning ved vannpose for vannmadrass og framgangsmaate for framstilling av denne.

Publications (1)

Publication Number Publication Date
EP0378060A1 true EP0378060A1 (en) 1990-07-18

Family

ID=19891610

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89850436A Withdrawn EP0378060A1 (en) 1989-01-09 1989-12-15 An arrangement in connection with a water bag for a water mattress, and a method of manufacturing the same

Country Status (4)

Country Link
EP (1) EP0378060A1 (da)
JP (1) JPH02224706A (da)
DK (1) DK3990A (da)
NO (1) NO890079L (da)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1321075A3 (de) * 2001-12-20 2004-01-14 Frank-Werner Schatz Wasserbett

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3456270A (en) * 1967-08-08 1969-07-22 Scott Paper Co Flotation apparatus
DE1554178A1 (de) * 1965-09-17 1970-02-12 Davidson Barry Allen Koerper-Stuetzkonstruktion
EP0240479A1 (en) * 1986-04-04 1987-10-07 Winfried Peter Barbulla A water mattress bag, and a method for producing the same, as well as a water mattress with a water mattress bag
FR2607387A1 (fr) * 1986-12-01 1988-06-03 Petelet Claude Yves Poche a eau

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1554178A1 (de) * 1965-09-17 1970-02-12 Davidson Barry Allen Koerper-Stuetzkonstruktion
US3456270A (en) * 1967-08-08 1969-07-22 Scott Paper Co Flotation apparatus
EP0240479A1 (en) * 1986-04-04 1987-10-07 Winfried Peter Barbulla A water mattress bag, and a method for producing the same, as well as a water mattress with a water mattress bag
FR2607387A1 (fr) * 1986-12-01 1988-06-03 Petelet Claude Yves Poche a eau

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1321075A3 (de) * 2001-12-20 2004-01-14 Frank-Werner Schatz Wasserbett

Also Published As

Publication number Publication date
NO890079D0 (no) 1989-01-09
DK3990D0 (da) 1990-01-08
JPH02224706A (ja) 1990-09-06
DK3990A (da) 1990-07-10
NO890079L (no) 1990-07-10

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