US4384437A
Expired / Lapsed
US
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Heat insulating roofing systems
Assignee: Anglia Jay Purlin Co Ltd
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Filing: 1980-10-28
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Granted: 1983-05-24
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Expires: 2000-10-28
Abstract
Abstract A heat insulating roof structure for an industrial building, in the form of an inter-purlin system comprising spaced parallel purlins (10, 10A or 35, 35A or 45, 45A) having their base webs (14 or 41 or 50, 51) sheathed by a heat insulating sleeve (16, 17 or 53, 54 or 56, 57), thereby to provide lateral platforms on opposite sides of the purlin for the support of cross members (29 or 70) which form trays to support a layer of heat insulating material (31). In one form of embodiment the cross members are inverted tee bars (29), thereby forming open rectangularly framed trays for supporting the insulating layer. In another form of embodiment the cross members are closed tray bases (70) especially suitable for a vapor sealed system. In all embodiments the insulating sleeve assembly (16, 17 or 53, 54 or 56, 57) serve to minimize or avoid the creation of a cold bridge between the warm building interior and the cold space above the insulating layer (31).
Inventors
- 👤 Frederick C. Coles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:29
CPC Classifications
E; E04; E04D; E04D13/00; E04D13/16; E04D13/1606; E04D13/1612; E04D13/1637
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
188 words
A heat insulating roof structure comprising: a plurality of spaced parallel roof purlins each having a main web, a lateral top web with a downturned edge flange enabling the securing down of outer roofing sheets and, at least on the other side of the main web from the top web, a lateral base web with an upturned edge flange, a heat insulating sleeve assembly sheathing the at least one base web of each purlin, said sleeve assembly comprising a rigid outer sleeve with a heat insulating filler recessed to accommodate the at least one base web of the purlin, said sleeve and insulating filler extending laterally to both sides of the purlin and upwardly to provide a heat insulated supporting surface at the same level on both sides of the main web of the purlin above the upturned edge flange of the at least one base web, and cross members supported on said supporting surfaces to extend in parallel relationship between the purlins and form with said supporting surfaces rectangular frames for supporting a layer of insulating material which forms an inner roofing spaced below the outer roofing.
Claim 2
Dependent Claim
188 words
A heat insulating roof structure comprising: a plurality of spaced parallel roof purlins each having a main web, a lateral top web with a downturned edge flange enabling the securing down of outer roofing sheets and, at least on the other side of the main web from the top web, a lateral base web with an upturned edge flange, a heat insulating sleeve assembly sheathing the at least one base web of each purlin, said sleeve assembly comprising a rigid outer sleeve with a heat insulating filler recessed to accommodate the at least one base web of the purlin, said sleeve and insulating filler extending laterally to both sides of the purlin and upwardly to provide a heat insulated supporting surface at the same level on both sides of the main web of the purlin above the upturned edge flange of the at least one base web, and cross members supported on said supporting surfaces to extend in parallel relationship between the purlins and form with said supporting surfaces rectangular frames for supporting a layer of insulating material which forms an inner roofing spaced below the outer roofing.
Claim 3
Dependent Claim
49 words
A structure according to claim 1, including cross member locating and retaining means in part integrally formed on the rigid outer sleeves of the sleeve assembly, for locating and retaining the ends of the cross members supported in alignment on the supporting surfaces on opposite sides of a purlin.
Claim 4
Dependent Claim
83 words
A structure according to claim 2, wherein the rigid outer sleeve of the sleeve assembly is a cold rolled metal sleeve of U-shape with inturned flanges at the upper edges of its limbs, the locating and retaining means comprising tabs partially severed from said inturned flanges to receive between them the ends of cross members in the form of inverted metal tee-bars, and tabbed bridging clips interengaging with said tabs to hold down the ends of the inverted tee-bars on said supporting surfaces.
Claim 5
Dependent Claim
32 words
A structure according to claim 1, wherein said cross members supported between the purlins comprise crosspieces which form rectangularly framed trays each defined by two opposed insulating sleeves and two opposed crosspieces.
Claim 6
Dependent Claim
20 words
A structure according to claim 1, wherein said cross members supported between the purlins comprise a plurality of tray bases.
Claim 7
Dependent Claim
42 words
A structure according to claim 5, wherein each tray base has opposed side walls transverse to the purlins, said side walls being adapted for interlocking engagement through a sealant to provide a vapour seal at the adjacent side edges of adjacent trays.
Claim 8
Dependent Claim
38 words
A structure according to claim 6, including a strip sealant sandwiched between the insulating sleeves and the end edge portions of the tray bases, said end edge portions of the tray bases being rivetted to the insulating sleeves.
Claim 9
Dependent Claim
35 words
A structure according to claim 7, wherein the insulating sleeve comprises the assembly of a rigid outer sleeve with a heat insulating filler recessed to accommodate the at least one base web of the purlin.
Claim 10
Dependent Claim
149 words
A hear insulating roof structure comprising: a plurality of spaced Z-type or multibeam-type purlins each having a top web to one side of a main web and a base web with an upstanding edge to the other side of the main web, a heat insulating sleeve assembly sheathing the base web of each purlin, being hooked over the upstanding edge along one side of the main web and being secured by clips along the other side of the main web, said heat insulating sleeve comprising heat insulating material extending to both sides of the main web and upwardly to provide heat insulated supporting surfaces at the same level on both sides of the main web above the level of the upturned edge of the base web, and a heat insulating inner roofing layer supported between the purlins by means which includes metal cross members supported on said supporting surfaces.
Claim 11
Dependent Claim
149 words
A hear insulating roof structure comprising: a plurality of spaced Z-type or multibeam-type purlins each having a top web to one side of a main web and a base web with an upstanding edge to the other side of the main web, a heat insulating sleeve assembly sheathing the base web of each purlin, being hooked over the upstanding edge along one side of the main web and being secured by clips along the other side of the main web, said heat insulating sleeve comprising heat insulating material extending to both sides of the main web and upwardly to provide heat insulated supporting surfaces at the same level on both sides of the main web above the level of the upturned edge of the base web, and a heat insulating inner roofing layer supported between the purlins by means which includes metal cross members supported on said supporting surfaces.
Claim 12
Dependent Claim
40 words
A structure according to claim 9, wherein the sleeve assembly comprises a metal outer sleeve and a heat insulating filler both extending laterally to both sides of the main web of the purlin and upwardly to form said supporting surfaces.
Claim 13
Dependent Claim
49 words
A structure according to claim 10, including cross member locating and retaining means in part integrally formed on the rigid outer sleeves of the sleeve assembly, for locating and retaining the ends of the cross members supported in alignment on the supporting surfaces on opposite sides of a purlin.
Claim 14
Dependent Claim
71 words
A structure according to claim 9, wherein, on the side of the purlin main web opposite to the lateral base web, a retaining clip is provided to secure the insulating sleeve to the purlin, and wherein the insulating sleeve has a top flange with a depending lip adapted, during assembly of the sleeve to the base web of the purlin; to enable said sleeve to be suspended from said base web.
Claim 15
Dependent Claim
62 words
A structure according to claim 11, wherein the retaining means comprises portions cut away in a top flange of the outer sleeve to provide a recessed seating for the ends of the tee-bars, and tabbed bridging clips for fitting over the ends of the tee-bars with their tabs engaging under the top flange of the outer sleeve adjacent the cut away portions.
Claim 16
Dependent Claim
135 words
A heat insulating roofing structure comprising: a plurality of spaced parallel J-type purlins each having a lateral top web to one side of a main web and base webs to opposite sides of the main web, a heat insulating sleeve assembly sheathing said base webs, said sleeve assembly comprising a fire-retardant rigid outer sleeve and a less rigid infilling of heat insulating material recessed to accommodate the purlin base webs and provide heat insulating filler both above and below said base webs, said sleeve assembly forming a heat insulating supporting surface at the same level on both sides of the base webs above the level of the latter, and metal cross members supported on said supporting surfaces to extend between the purlins, insulated from the base webs of the purlin by said heat insulating filler.
Claim 17
Dependent Claim
135 words
A heat insulating roofing structure comprising: a plurality of spaced parallel J-type purlins each having a lateral top web to one side of a main web and base webs to opposite sides of the main web, a heat insulating sleeve assembly sheathing said base webs, said sleeve assembly comprising a fire-retardant rigid outer sleeve and a less rigid infilling of heat insulating material recessed to accommodate the purlin base webs and provide heat insulating filler both above and below said base webs, said sleeve assembly forming a heat insulating supporting surface at the same level on both sides of the base webs above the level of the latter, and metal cross members supported on said supporting surfaces to extend between the purlins, insulated from the base webs of the purlin by said heat insulating filler.
Claim 18
Dependent Claim
49 words
A structure according to claim 14, including cross member locating and retaining means in part integrally formed on the rigid outer sleeves of the sleeve assembly, for locating and retaining the ends of the cross members supported in alignment on the supporting surfaces on opposite sides of a purlin.
Claim 19
Dependent Claim
44 words
A structure according to claim 14, wherein the insulating sleeve is formed in two longitudinally split parts, one for each base web of the purlin, and retaining bands are provided to hold said two sleeve parts together in assembled condition sheathing the two webs.
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) | 1986-05-23 | 1986-11-22 | 1987-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-23 | 1990-11-22 | 1991-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-23 | 1994-11-22 | 1995-05-24 | $7700.00 | Window Closed / Lapsed |