US3593478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roofing installation
Assignee: Marathon Equipment and Supply Ltd
•
Filing: 1969-12-12
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Granted: 1971-07-20
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Expires: 1989-12-12
Abstract
Abstract A roofing installation in which spaced holes are formed through a layer of fibrous or closed-cell thermal insulation and through bitumen-coated roofing felts which have an upper layer of gravel chips and which are disposed on top of the layer of insulation. The lower face of the layer of insulation, between which and a supporting concrete roofing deck a vapor barrier layer is disposed, is recessed around each hole, and a breather core comprising a tubular portion and an annular flange portion presented at the lower end of the tubular portion is disposed with the tubular portion snugly fitted within the hole and with the flange portion disposed within the recess on the lower face of the layer of insulation. The flange portion of the core is of castellated form, the grooves constituted by the castellations each being of truncated sector-shaped form. The tubular portion of the core is also of castellated form with the grooves constituted by these castellations being disposed parallel to the vertical, longitudinal axis of the tubular portion, the grooves on the outer face of the tubular portion each being in communication with one of the grooves on the upper face of the flange portion, and the grooves on the inner face of the tubular portion each being in communication with one of the grooves on the lower face of the flange portion. Thus, water vapor, gas and the like can pass from the lower face of the layer of insulation defined by the recess, from the face of the layer of insulation presented by the hole formed therethrough, and from the upper face of the layer of insulation through the grooves in the flange and tubular portions of the core into the lower end of a breather pipe which is mounted on the roofing felts and from the upper end of which the water vapor or gas can pass to the atmosphere through a downwardly open passage while the entry of rainwater into the breather pipe is prevented.
Inventors
- 👤 Robert W Mason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:37
CPC Classifications
E; E04; E04D; E04D13/00; E04D13/17
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
152 words
Roofing installation comprising a layer of thermal insulation which is supported on a support structure and which has upper and lower main faces, a first substantially fluid-impermeable layer mounted on the upper main face of the layer of insulation, and a second substantially fluid-impermeable layer mounted on the lower main face of the layer of insulation, wherein there is provided at least one hole extending through the first fluid-impermeable layer and through the layer of insulation to the lower main face thereof, and wherein there is provided a breather core comprising a plate which is disposed, in supporting contact with the layer of insulation, within a recess in the lower main face of the layer of insulation and around the hole, and at least the upper main face of which is provided with groove extending from the outer edge portion of the plate to the portion of the plate within the hole.
Claim 2
Dependent Claim
152 words
Roofing installation comprising a layer of thermal insulation which is supported on a support structure and which has upper and lower main faces, a first substantially fluid-impermeable layer mounted on the upper main face of the layer of insulation, and a second substantially fluid-impermeable layer mounted on the lower main face of the layer of insulation, wherein there is provided at least one hole extending through the first fluid-impermeable layer and through the layer of insulation to the lower main face thereof, and wherein there is provided a breather core comprising a plate which is disposed, in supporting contact with the layer of insulation, within a recess in the lower main face of the layer of insulation and around the hole, and at least the upper main face of which is provided with groove extending from the outer edge portion of the plate to the portion of the plate within the hole.
Claim 3
Dependent Claim
71 words
Roofing installation according to claim 1, wherein a breather pipe having upper and lower ends is mounted with the lower end thereof in communication with the upper end of the hole which extends through the first fluid-impermeable layer and through the layer of insulation, the upper end portion of the pipe communicating with the atmosphere through a downwardly open passage thereby substantially to prevent the entry of rain into the pipe.
Claim 4
Dependent Claim
49 words
Roofing installation according to claim 1, wherein the portion of the plate within the hole provided in the layer of insulation is apertured, and the lower main face of the plate is also provided with grooving extending from the outer periphery of the plate to the aperture provided therein.
Claim 5
Dependent Claim
68 words
Roofing installation according to claim 1, wherein the breather core further comprises a pillar which is disposed within the hole provided in the layer of insulation, the plate being presented at the lower end of the pillar, and the pillar being provided with grooving which communicates with the grooving provided in the upper main face of the plate and which extends to the upper end of the pillar.
Claim 6
Dependent Claim
93 words
Roofing installation according to claim 4, wherein the portion of the plate within the hole provided in the layer of insulation is apertured, and the pillar is of hollow tubular form, the lower main face of the plate being provided with grooving which extends from the outer edge portion of the plate to the aperture provided therein, and the inner face of the hollow pillar being provided with grooving which communicates with the grooving provided in the lower main face of the plate and which extends to the upper end of the pillar.
Claim 7
Dependent Claim
15 words
Roofing installation according to claim 1, wherein the support structure comprises a concrete roofing deck.
Claim 8
Dependent Claim
20 words
Roofing installation according to claim 1, wherein the first substantially fluid-impermeable layer comprises at least one layer of roofing felt.
Claim 9
Dependent Claim
16 words
Roofing installation according to claim 5, wherein the breather core is integrally formed of linear polyethylene.
Claim 10
Dependent Claim
20 words
Roofing installation according to claim 1, wherein the layer of thermal insulation is constituted by a layer of fibrous insulation.
Claim 11
Dependent Claim
47 words
Roofing installation according to claim 1, wherein the layer of thermal insulation is constituted by a plurality of panels of closed-cell insulation disposed in edge-to-edge abutting relationship, the hole through the layer of insulation being located at the joint between two adjacent panels of said plurality thereof.
Claim 12
Dependent Claim
301 words
Roofing installation comprising a layer of thermal insulation which is supported on a roofing deck and which has upper and lower main faces, a plurality of superposed layers of bitumen-coated roofing felt having thereon a top layer of gravel chips and mounted on the upper main face of the layer of insulation, and a vapor barrier mounted on the lower main face of the layer of insulation, wherein there is provided at least one circular hole extending through the roofIng felts and the layer of gravel chips and through the layer of insulation to the lower main face thereof, and wherein there is provided a breather core comprising a substantially tubular portion having equiangularly spaced castellations extending parallel to the longitudinal axis of the tubular portion, and a circular flange portion which is presented at the lower end of the tubular portion and which has equiangularly spaced castellations, the flange portion being disposed, in supporting contact with the layer of insulation, within an annular recess in the lower main face of the layer of insulation and around the hole, outer and inner grooves presented by the castellations in the tubular portion being in communication, respectively, with grooves on the upper and lower main faces of the flange portion, the latter grooves being presented by the castellations in the flange portion and each being of substantially truncated sector-shaped form, and a breather pipe having upper and lower ends being mounted with the lower end thereof in communication with the upper end of the hole which extends through the roofing felts and the layer of gravel chips and through the layer of insulation, and with the upper end portion of the breather pipe communicating with the atmosphere through a downwardly open passage thereby substantially to prevent the entry of rain into the pipe.
Claim 13
Dependent Claim
301 words
Roofing installation comprising a layer of thermal insulation which is supported on a roofing deck and which has upper and lower main faces, a plurality of superposed layers of bitumen-coated roofing felt having thereon a top layer of gravel chips and mounted on the upper main face of the layer of insulation, and a vapor barrier mounted on the lower main face of the layer of insulation, wherein there is provided at least one circular hole extending through the roofIng felts and the layer of gravel chips and through the layer of insulation to the lower main face thereof, and wherein there is provided a breather core comprising a substantially tubular portion having equiangularly spaced castellations extending parallel to the longitudinal axis of the tubular portion, and a circular flange portion which is presented at the lower end of the tubular portion and which has equiangularly spaced castellations, the flange portion being disposed, in supporting contact with the layer of insulation, within an annular recess in the lower main face of the layer of insulation and around the hole, outer and inner grooves presented by the castellations in the tubular portion being in communication, respectively, with grooves on the upper and lower main faces of the flange portion, the latter grooves being presented by the castellations in the flange portion and each being of substantially truncated sector-shaped form, and a breather pipe having upper and lower ends being mounted with the lower end thereof in communication with the upper end of the hole which extends through the roofing felts and the layer of gravel chips and through the layer of insulation, and with the upper end portion of the breather pipe communicating with the atmosphere through a downwardly open passage thereby substantially to prevent the entry of rain into the pipe.
Claim 14
Dependent Claim
157 words
Roofing installation comprising a layer of thermal insulation which is supported on a support structure and which has upper and lower main faces, a first substantially fluid-impermeable layer mounted on the upper main face of the layer of insulation, and a second substantially fluid-impermeable layer mounted on the lower main face of the layer of insulation, wherein there is provided at least one hole extending through the first fluid-impermeable layer and through the layer of insulation to the lower main face thereof, and wherein there is provided a breather core comprising a plate which is disposed, in supporting contact with the layer of insulation, within a recess in the lower main face of the layer of insulation and around the hole, and at least the upper main face of which is provided with projections between which passage means is provided from the outer edge portion of the plate to the portion of the plate within the hole.
Claim 15
Dependent Claim
157 words
Roofing installation comprising a layer of thermal insulation which is supported on a support structure and which has upper and lower main faces, a first substantially fluid-impermeable layer mounted on the upper main face of the layer of insulation, and a second substantially fluid-impermeable layer mounted on the lower main face of the layer of insulation, wherein there is provided at least one hole extending through the first fluid-impermeable layer and through the layer of insulation to the lower main face thereof, and wherein there is provided a breather core comprising a plate which is disposed, in supporting contact with the layer of insulation, within a recess in the lower main face of the layer of insulation and around the hole, and at least the upper main face of which is provided with projections between which passage means is provided from the outer edge portion of the plate to the portion of the plate within the hole.
Claim 16
Dependent Claim
71 words
Roofing installation according to claim 12, wherein a breather pipe having upper and lower ends is mounted with the lower end thereof in communication with the upper end of the hole which extends through the first fluid-impermeable layer and through the layer of insulation, the upper end portion of the pipe communicating with the atmosphere through a downwardly open passage thereby substantially to prevent the entry of rain into the pipe.
Claim 17
Dependent Claim
54 words
Roofing installation according to claim 12, wherein the portion of the plate within the hole provided in the layer of insulation is apertured, and the lower main face of the plate is also provided with projections between which passage means is provided from the outer periphery of the plate to the aperture provided therein.
Claim 18
Dependent Claim
76 words
Roofing installation according to claim 12, wherein the breather core further comprises a pillar which is disposed within the hole provided in the layer of insulation, the plate being presented at the lower end of the pillar, and the pillar being provided with projections between which is provided passage means communicating with the passage means between the projections provided on the upper main face of the plate, and extending to the upper end of the pillar.
Claim 19
Dependent Claim
105 words
Roofing installation according to claim 15, wherein the portion of the plate within the hole provided in the layer of insulation is apertured, and the pillar is of hollow tubular form, the lower main face of the plate being provided with projections between which passage means is provided from the outer edge portion of the plate to the aperture provided therein, and the inner face of the hollow pillar being provided with projections between whicH is provided passage means communicating with the passage means between the projections provided on the lower main face of the plate, and extending to the upper end of the pillar.
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) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |