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US3729880A Expired / Lapsed US ⏱️ 0.0 years remaining

Insulated wall construction

Assignee: Eliason Corp
•
Filing: 1971-11-04
•
Granted: 1973-05-01
•
Expires: 1991-11-04
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Abstract

Abstract An improved insulated wall construction, particularly preformed wall panels, having metal outer sheets spaced a predetermined distance apart and having heat insulating material disposed between and completely occupying the space between the metal sheets. The insulating material preferably includes at least a first layer of foamed plastic and a second layer of matted fiber glass positioned in parallel relationship between the spaced metal sidewalls. The layer of fiber glass preferably has an initial uncompressed thickness substantially equal to the spacing between the metal sheets but, during assembly of the panel, is compressed a substantial amount to occupy only a portion of the space between the sheets, the remaining portion of the space being occupied by one or more layers of foamed plastic. The compressed layer of fiber glass will readily expand to substantially completely occupy the space between the metal sheets in the event the foamed plastic layer is destroyed, as by a flash fire.

Inventors

  • 👤 C Eliason

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 02:36
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/046; E; E04; E04C; E04C2/00; E04C2/02; E04C2/26; E04C2/284; E04C2/292; B32B15/14; B32B5/00; B32B5/22; B32B5/24; B32B5/245; B32B2262/00; B32B2262/10; B32B2262/101; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/0278; B32B2607/00

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 20 words
A wall construction according to claim 1, wherein said layer of fibrous material comprises a compressed mat of fiber glass.
Claim 2
Dependent Claim 29 words
A wall construction according to claim 1, wherein said layer of compressed fibrous material has a thickness in the compressed condition greater than one half of said predetermined distance.
Claim 3
Dependent Claim 36 words
A wall construction according to claim 1, wherein said foamed plastic layer includes first and second foamed plastic sublayers disposed adjacent each of said sidewalls, said layer of fibrous material being sandwiched between said plastic sublayers.
Claim 4
Dependent Claim 37 words
A wall construction according to claim 1, wherein said layer of fibrous material includes first and second sublayers of fibrous material disposed adjacent the sidewalls, said plastic layer being sandwiched between said two sublayers of fibrous material.
Claim 5
Dependent Claim 15 words
A wall construction according to claim 1, wherein said sidewalls comprise thin plate-like metal members.
Claim 6
Dependent Claim 37 words
A wall construction according to claim 1, wherein said wall construction comprises a prefabricated lightweight panel; wherein said sidewalls comprise thin plate-like metal members; and wherein said layer of fibrous material comprises a mat of fiber glass.
Claim 7
Dependent Claim 59 words
A wall construction according to claim 7, wherein said panel includes elongated rigid support members disposed between said sidewalls for maintaining same said predetermined distance apart, said support members being fixedly secured to and extending along the adjacent corresponding edges of said sidewalls, said insulating means being disposed between said sidewalls in the space bounded by said support members.
Claim 8
Dependent Claim 23 words
A wall construction according to claim 8, wherein said layer of foamed plastic is selected from the group consisting of polyurethane and polystyrene.
Claim 9
Independent Claim 98 words
A method of forming an insulated wall construction, comprising the steps of: positioning a pair of sidewall means in spaced parallel relationship; placing a layer of compressed, fibrous and fireproof material adjacent to and parallel with the inside surface of one of said sidewall means and spaced from the other sidewall means; securing edgewall means to and between the lateral edges of said sidewall means; and causing a plastic material to form a solidified foam substantially filling the space between said fibrous material and said other sidewall means, whereby said fibrous material is held in a compressed condition.

References Cited (Backward Citations)

US2858580A Cited
US3370739A Cited
US3491910A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-04-30 1976-10-30 1977-05-01 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-04-30 1980-10-30 1981-05-01 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-04-30 1984-10-30 1985-05-01 $7700.00 Window Closed / Lapsed

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