US3818521A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mattress cover construction
Assignee: RICHARDS QUALITY BEDDING CO
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Filing: 1972-12-04
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Granted: 1974-06-25
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Expires: 1992-12-04
Abstract
Abstract A flexible, fire resistant mattress cover construction having a layer of padding material, one surface of which is covered by a layer of normally flammable cloth material and a layer of heat conducting metallic foil located between the padding material and the cloth material. The foil serves to prevent the flammable cloth material from bursting into flame when the cloth material is subjected to temperatures above the level at which combustion would normally occur by conducting the heat away from the location of application of heat to the cloth material.
Inventors
- 👤 C Richards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:24
CPC Classifications
A; A47; A47C; A47C31/00; A47C31/001; B; B68; B68G; B68G7/00; B68G7/10; Y; Y10; Y10S; Y10S297/00; Y10S297/05
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
166 words
In a mattress having a relatively thick internal support structure and upper and lower coverings superimposed on and coextensive with the respective upper and lower surfaces of said support structure and fixed relative thereto, comprising the improvement wherein said upper covering includes: a relatively thick layer of flexible and flammable padding positioned adjacent and overlying the upper surface of said support structure; a thin sheet of flexible heat conducting metallic foil positioned adjacent and substantially coextensively overlying the upper surface of said layer of padding; a thin layer of a resilient foam material positioned adjacent and substantially coextensively overlying the upper surface of said sheet of foil, said foil being sandwiched between said padding and said foam material; and a thin sheet of flexible flammable cloth positioned adjacent and substantially coextensively overlying the upper surface of said layer of foam material, said sheet of cloth comprising the external ticking of said mattress; whereby said sheet of foil diffuses concentrations of heat as applied to said cloth.
Claim 2
Dependent Claim
166 words
In a mattress having a relatively thick internal support structure and upper and lower coverings superimposed on and coextensive with the respective upper and lower surfaces of said support structure and fixed relative thereto, comprising the improvement wherein said upper covering includes: a relatively thick layer of flexible and flammable padding positioned adjacent and overlying the upper surface of said support structure; a thin sheet of flexible heat conducting metallic foil positioned adjacent and substantially coextensively overlying the upper surface of said layer of padding; a thin layer of a resilient foam material positioned adjacent and substantially coextensively overlying the upper surface of said sheet of foil, said foil being sandwiched between said padding and said foam material; and a thin sheet of flexible flammable cloth positioned adjacent and substantially coextensively overlying the upper surface of said layer of foam material, said sheet of cloth comprising the external ticking of said mattress; whereby said sheet of foil diffuses concentrations of heat as applied to said cloth.
Claim 3
Dependent Claim
21 words
A mattress according to claim 1, further including a thin layer of flexible fabric bonded to one side of said foil.
Claim 4
Dependent Claim
30 words
A mattress according to claim 2, wherein said thin layer of fabric as bonded to said foil is positioned between said foil and the adjacent surface of said padding means.
Claim 5
Dependent Claim
20 words
A mattress according to claim 2, wherein said thin layer of foam material has a thickness of approximately 1/4 inch.
Claim 6
Dependent Claim
30 words
A mattress according to claim 1, wherein said foam layer is of a flammable material and has a thickness approximately within the range of between 1/8 inch and 1/2 inch.
Claim 7
Dependent Claim
41 words
A mattress according to claim 1, further including a side covering surrounding the side of said support structurE and extending substantially perpendicularly between said upper and lower coverings, said side covering being of a layered structure identical to said upper covering.
Claim 8
Dependent Claim
64 words
A mattress according to claim 6, wherein said upper and side coverings have coextensive edge portions disposed directly adjacent and fixedly connected to one another, and means coacting with said edge portions for making same fire resistant, said last-mentioned means comprising elongated strip means extending coextensively with the edge portions, said strip means having an elongated strip of heat conductive metal foil associated therewith.
Claim 9
Dependent Claim
20 words
A mattress according to claim 1, wherein said lower covering is of a layered structure identical to said upper covering.
Claim 10
Dependent Claim
156 words
In a mattress having a relatively thick internal support structure and upper and lower coverings superimposed on and coextensive with the respective upper and lower surfaces of said support structure and fixed relative thereto, comprising the improvement wherein said upper covering includes: a relatively thick layer of flexible and flammable padding positioned adjacent and coextensively overlying the upper surface of said support structure; a thin, flexible, fire resistant, laminated layer positioned adjacent and substantially coextensively overlying the upper surface of said layer of padding, said laminated layer including a thin sheet of flexible heat conducting metallic foil substantially coextensively overlying said layer of padding; and said laminated layer further including a thin layer of flexible flammable fabric positioned adajcent and substantially coextensively overlying said sheet of metallic foil, said layer of flexible fabric being bonded to said sheet of metallic foil; whereby said sheet of foil diffuses concentrations of heat for preventing burning of said padding.
Claim 11
Dependent Claim
156 words
In a mattress having a relatively thick internal support structure and upper and lower coverings superimposed on and coextensive with the respective upper and lower surfaces of said support structure and fixed relative thereto, comprising the improvement wherein said upper covering includes: a relatively thick layer of flexible and flammable padding positioned adjacent and coextensively overlying the upper surface of said support structure; a thin, flexible, fire resistant, laminated layer positioned adjacent and substantially coextensively overlying the upper surface of said layer of padding, said laminated layer including a thin sheet of flexible heat conducting metallic foil substantially coextensively overlying said layer of padding; and said laminated layer further including a thin layer of flexible flammable fabric positioned adajcent and substantially coextensively overlying said sheet of metallic foil, said layer of flexible fabric being bonded to said sheet of metallic foil; whereby said sheet of foil diffuses concentrations of heat for preventing burning of said padding.
Claim 12
Dependent Claim
46 words
A mattress according to claim 9, further including a thin sheet of flexible flammable cloth positioned adjacent and substantially coextensively overlying said laminated layer so that said laminated layer is disposed between said cloth and said padding, said cloth comprising the external ticking of said mattress.
Claim 13
Dependent Claim
46 words
A mattress according to claim 10, further including a thin layer of resilient and flammable foam material positioned adjacent and substantially coextensively overlying the upper surface of said laminated layer, said thin layer of resilient foam material being positioned between said laminated layer and said cloth.
Claim 14
Dependent Claim
42 words
A mattress according to claim 9, wherein said thin layer of flexible fabric comprises a flammable cloth which constitutes the external ticking of said mattress, and said sheet of metallic foil being positioned between said external ticking and said layer of padding.
Claim 15
Dependent Claim
65 words
A mattress according to claim 9, further including a side covering disposed around the side of said support structure and extending substantially perpendicularly between said upper and lower coverings, said side covering having the opposite edges thereof fixedly connected to respective edges of said upper and lower covering, and said lower and side coverings each being of a layered structure identical to said upper covering.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-24 | 1977-12-24 | 1978-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-24 | 1981-12-24 | 1982-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-24 | 1985-12-24 | 1986-06-25 | $7700.00 | Window Closed / Lapsed |