US4223493A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-layered skylight
Assignee: Roehm GmbH Darmstadt
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Filing: 1978-09-20
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Granted: 1980-09-23
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Expires: 1998-09-20
Abstract
Abstract A multi-layered skylight having an outer element with a central domed portion and a downwardly extending circumferential skirt portion, said outer element comprising a monolayer of a synthetic resin which transmits light, and an inner element of one-piece construction with a central domed portion and a substantially planar circumferential edge portion, said inner element comprising at least two sheets of a synthetic resin which transmits light, said sheets being substantially parallel to one another and having a plurality of supporting elements extending therebetween, said elements being arranged with the planar edge portion of said inner element being within and surrounded by the circumferential skirt portion of said outer element and with the central domed portions of said inner and outer elements being in a substantially parallel spaced relationship to one another.
Inventors
- 👤 Theodor P. Moench
- 👤 Friedrich Hanstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:41
CPC Classifications
E; E04; E04D; E04D13/00; E04D13/03; F; F21; F21V; F21V29/00; F21V3/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
193 words
A multi-layered skylight having an outer element with a central domed portion, a substantially planar circumferential edge portion and a circumferential skirt portion extending downwardly from said edge portion, said outer element comprising a monolayer of a synthetic resin which transmits light, and an inner element of one-piececonstruction with a central domed portion and a substantially planar circumferential edge portion, said inner element comprising at least two sheets of a synthetic resin which transmits light, said sheets being closely spaced and parallel to one another, and having a plurality of elongated supporting elements integrally formed therewith and extending therebetween across the dimensions of said sheets between the substantially planar circumferential edge portions thereof and dividing the space between said sheets into a plurality of separate elongated chambers, said inner and outer elements being arranged with the planar edge portion of said inner element being located below the planar circumferential edge portion of the outer element within and surrounded by the circumferential skirt portion of said outer element, with the domed central portions of said inner and outer elements having substantially the same curvature and extending in substantially parallel spaced relationship to one another.
Claim 2
Dependent Claim
193 words
A multi-layered skylight having an outer element with a central domed portion, a substantially planar circumferential edge portion and a circumferential skirt portion extending downwardly from said edge portion, said outer element comprising a monolayer of a synthetic resin which transmits light, and an inner element of one-piececonstruction with a central domed portion and a substantially planar circumferential edge portion, said inner element comprising at least two sheets of a synthetic resin which transmits light, said sheets being closely spaced and parallel to one another, and having a plurality of elongated supporting elements integrally formed therewith and extending therebetween across the dimensions of said sheets between the substantially planar circumferential edge portions thereof and dividing the space between said sheets into a plurality of separate elongated chambers, said inner and outer elements being arranged with the planar edge portion of said inner element being located below the planar circumferential edge portion of the outer element within and surrounded by the circumferential skirt portion of said outer element, with the domed central portions of said inner and outer elements having substantially the same curvature and extending in substantially parallel spaced relationship to one another.
Claim 3
Dependent Claim
25 words
A skylight as in claim 1 wherein said inner and outer elements are substantially uniformly separated by a distance of 10 mm to 40 mm.
Claim 4
Dependent Claim
32 words
A skylight as in claim 1 which additionally comprises a circumferential gasket mounted on the edge portion of said inner element and extending therefrom to the skirt portion of said outer element.
Claim 5
Dependent Claim
17 words
A skylight as in claim 3 wherein said gasket is adhered to said inner and outer elements.
Claim 6
Dependent Claim
17 words
A skylight as in claim 3 wherein said gasket is comprised of an elastic open-pored foamed material.
Claim 7
Dependent Claim
25 words
A skylight as in claim 1 wherein said outer element is comprised of an acrylic glass and said inner element is comprised of polyvinyl chloride.
Claim 8
Dependent Claim
28 words
A skylight as in claim 1 which additionally comprises fittings for the mounting or the opening and closing thereof, said fittings being affixed to said inner element only.
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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) | 1983-09-23 | 1984-03-24 | 1984-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-23 | 1988-03-24 | 1988-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-23 | 1992-03-24 | 1992-09-23 | $7700.00 | Window Closed / Lapsed |