Patent US4187566A successfully refreshed from Google Patents.
US4187566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water mattress construction
Assignee: WILSHIRE BEDDING CO Inc
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Filing: 1978-02-08
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Granted: 1980-02-12
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Expires: 1998-02-08
Abstract
Abstract A water mattress construction for a water bed having a foam assembly forming a cavity for surrounding and supporting a water-filled bladder. The foam assembly is formed of several layers of foam having different densities to provide strong support for the water bladder and prevent bulging. There are layers of low-density foam on the top and bottom of the foam assembly and a center core or frame of a medium density enclosing the cavity and bladder installed therein. The entire foam structure and bladder retain their shape by being bound on the sides and bottom by a high-strength, non-stretchable, non-woven fabric bonded securely to the foam assembly. The foam and bladder assembly is then covered with a low-density foam having a high recovery factor. The entire structure is then covered with a heavy-duty material and ticking which is quilted and has the appearance of a conventional mattress.
Inventors
- 👤 Warren E. Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:30
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/08; A47C27/085
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
118 words
A fluid cell mattress construction comprising: a rectangular layer of low-density elastomeric foam; an intermediate rectangular layer of medium-density elastomeric foam on top of said low-density foam forming a cavity; a rectangular layer of low-density elastomeric foam around the perimeter of said cavity on top of said medium-density foam; a rectangular cover of substantially non-stretchable fabric covering the bottom and sides formed by the three layers of foam, thereby forming the foam layers into a self-supporting frame; a fluid bladder formed to fit into said cavity; a second layer of low-density foam covering the top of said layers of foam and said bladder; and a cover of ticking enclosing the assembly of layers of foam and said bladder.
Claim 2
Dependent Claim
118 words
A fluid cell mattress construction comprising: a rectangular layer of low-density elastomeric foam; an intermediate rectangular layer of medium-density elastomeric foam on top of said low-density foam forming a cavity; a rectangular layer of low-density elastomeric foam around the perimeter of said cavity on top of said medium-density foam; a rectangular cover of substantially non-stretchable fabric covering the bottom and sides formed by the three layers of foam, thereby forming the foam layers into a self-supporting frame; a fluid bladder formed to fit into said cavity; a second layer of low-density foam covering the top of said layers of foam and said bladder; and a cover of ticking enclosing the assembly of layers of foam and said bladder.
Claim 3
Dependent Claim
27 words
The mattress construction according to claim 1 wherein said non-stretchable fabric is bonded to the layers of foam forming the sides and bottom of said mattress construction.
Claim 4
Dependent Claim
20 words
The mattress construction according to claim 1 wherein said cavity formed by said medium-density foam is an inverted truncated pyramid.
Claim 5
Dependent Claim
22 words
The mattress construction according to claim 3 wherein the sides of said truncated pyramid angle outwardly at approximately 50° to the horizontal.
Claim 6
Dependent Claim
23 words
The mattress construction according to claim 1 wherein said second layer of foam is covered with non-stretchable fabric and sewn to the ticking.
Claim 7
Dependent Claim
26 words
The mattress construction according to claim 1 wherein the bottom of said mattress construction is covered with non-stretchable fabric sewn to the ticking covering the sides.
Claim 8
Dependent Claim
25 words
The mattress construction according to claim 6 wherein the bottom cover of non-stretchable fabric is bonded to the non-stretchable fabric box-like structure covering the foam.
Claim 9
Dependent Claim
28 words
The mattress construction according to claim 1 including: a water-impervious liner covering the top, sides and cavity formed by the three layers of foam beneath said fluid bladder.
Claim 10
Dependent Claim
46 words
The mattress construction according to claim 1 wherein said bladder has a length equal to the cavity and a width equal to one-half the cavity whereby the other half of the cavity may be filled with a foam insert thereby forming a half-fluid and half-foam mattress.
Claim 11
Dependent Claim
16 words
The mattress construction according to claim 1 wherein said non-stretchable fabric is a polypropylene non-woven fabric.
Claim 12
Dependent Claim
126 words
A water mattress construction comprising: a rectangular frame of medium-density elastomeric foam bonded on top of the low-density foam forming a cavity having sides in the form of isosceles trapezoids; a rectangular frame of medium density bonded to the top of the high-density foam; a substantially non-stretchable fabric binder formed into a substantially rectangular box covering the bottom and sides of said layers of foam; adhesive means bonding said non-stretchable fabric to said foam layers; a vinyl liner covering the interior of said cavity; a bladder filled with water filling said cavity; a second rectangular layer of low-density foam covering said bladder and said frame of medium-density foam; a cover of ticking enclosing the top, bottom and sides of said layers of foam and non-stretchable fabric.
Claim 13
Dependent Claim
126 words
A water mattress construction comprising: a rectangular frame of medium-density elastomeric foam bonded on top of the low-density foam forming a cavity having sides in the form of isosceles trapezoids; a rectangular frame of medium density bonded to the top of the high-density foam; a substantially non-stretchable fabric binder formed into a substantially rectangular box covering the bottom and sides of said layers of foam; adhesive means bonding said non-stretchable fabric to said foam layers; a vinyl liner covering the interior of said cavity; a bladder filled with water filling said cavity; a second rectangular layer of low-density foam covering said bladder and said frame of medium-density foam; a cover of ticking enclosing the top, bottom and sides of said layers of foam and non-stretchable fabric.
Claim 14
Dependent Claim
20 words
The water mattress construction according to claim 11 wherein said non-stretchable fabric is comprised of a non-woven polypropylene fabric binder.
Claim 15
Dependent Claim
25 words
The water mattress construction according to claim 11 wherein said cover includes a rectangular sheet of non-stretchable fabric on the bottom of said mattress construction.
Claim 16
Dependent Claim
25 words
The water mattress construction according to claim 13 including an adhesive bonding the rectangular sheet of non-stretchable fabric to the rectangular box of non-stretchable fabric.
Claim 17
Independent Claim
139 words
A method of constructing a fluid cell mattress comprising: forming a rectangular layer of low-density foam; forming a cavity having sides in the shape of isosceles trapezoids and rectangular top and bottom in a medium-density foam; bonding the medium-density foam onto the layer of low-density foam; bonding the layer of low-density foam on top of the medium-density foam around the perimeter of said cavity; forming a substantially non-stretchable fabric into a substantially rectangular box; covering the bottom and sides formed by the layers of low-density and medium-density foam with the rectangular box of non-stretchable fabric; bonding the non-stretchable fabric to the foam; installing a bladder fitted to said cavity; covering the bladder and top layer of medium-density foam with a rectangular layer of foam; enclosing the sides and top of the foam layer assembly in a cover of ticking.
Claim 18
Independent Claim
139 words
A method of constructing a fluid cell mattress comprising: forming a rectangular layer of low-density foam; forming a cavity having sides in the shape of isosceles trapezoids and rectangular top and bottom in a medium-density foam; bonding the medium-density foam onto the layer of low-density foam; bonding the layer of low-density foam on top of the medium-density foam around the perimeter of said cavity; forming a substantially non-stretchable fabric into a substantially rectangular box; covering the bottom and sides formed by the layers of low-density and medium-density foam with the rectangular box of non-stretchable fabric; bonding the non-stretchable fabric to the foam; installing a bladder fitted to said cavity; covering the bladder and top layer of medium-density foam with a rectangular layer of foam; enclosing the sides and top of the foam layer assembly in a cover of ticking.
Claim 19
Dependent Claim
25 words
The method according to claim 15 including: securing a sheet of non-stretchable fabric to said ticking to cover the bottom of said foam layer assembly.
Claim 20
Dependent Claim
22 words
The method according to claim 16 including: bonding said sheet of non-stretchable fabric to the non-stretchable fabric formed into a rectangular box.
Claim 21
Dependent Claim
53 words
A water mattress construction comprising: a foam frame assembly having a cavity; a substantially non-stretchable fabric enclosing the sides and bottom of said foam frame assembly, thereby forming the foam frame assembly into a self-supporting frame; a fluid bladder in said cavity; and enclosing cover means enclosing said frame assembly and said bladder.
Claim 22
Dependent Claim
53 words
A water mattress construction comprising: a foam frame assembly having a cavity; a substantially non-stretchable fabric enclosing the sides and bottom of said foam frame assembly, thereby forming the foam frame assembly into a self-supporting frame; a fluid bladder in said cavity; and enclosing cover means enclosing said frame assembly and said bladder.
Claim 23
Dependent Claim
42 words
The mattress construction according to claim 18 wherein said foam assembly comprises: top and bottom rectangular layers of foam having a predetermined density; and a center layer of foam framing said cavity having a density greater than said top and bottom layers.
Claim 24
Dependent Claim
17 words
The mattress construction according to claim 18 wherein said non-stretchable fabric is bonded to the foam assembly.
Claim 25
Dependent Claim
32 words
The mattress construction according to claim 19 wherein said foam assembly includes a layer of foam on the central layer around the perimeter of said cavity having a predetermined maximum recovery factor.
Claim 26
Dependent Claim
23 words
The mattress construction according to claim 18 wherein said enclosing cover includes a sheet of non-stretchable fabric on the bottom of said mattress.
Claim 27
Dependent Claim
23 words
The mattress construction according to claim 22 wherein said sheet of non-stretchable fabric is bonded to the non-stretchable fabric covering said foam assembly.
Claim 28
Dependent Claim
15 words
The mattress construction according to claim 18 wherein said non-stretchable fabric is non-woven polypropylene fabric.
Claim 29
Dependent Claim
23 words
The mattress construction according to claim 18 wherein said cavity is a substantially inverted truncated pyramid having sides approximately 50° to the horizontal.
Claim 30
Dependent Claim
19 words
The mattress according to claim 18 including a contoured vinyl liner covering said foam frame assembly and said cavity.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-02-11 | 1983-08-13 | 1984-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-11 | 1987-08-13 | 1988-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-11 | 1991-08-13 | 1992-02-12 | $7700.00 | Window Closed / Lapsed |