US3837129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple glazing unit
Assignee: Emmaboda Glas AB
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Filing: 1972-10-20
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Granted: 1974-09-24
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Expires: 1992-10-20
Abstract
Abstract A multiple glazing unit comprising two glass sheets and at least one impact resistant middle sheet of plastic material which to compensate for the elongation of the plastic and for temperature changes is so mounted that there is an additional space for the middle sheet in which to expand in its own plane. The means for mounting the middle sheet is a U-shaped strip which engages the middle sheet only by means of the extremities of the U-limbs and which clamps the middle sheet solely by its inherent resilience.
Inventors
- 👤 E Losell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:42
CPC Classifications
F; F41; F41H; F41H5/00; F41H5/02; F41H5/04; F41H5/0407; E; E06; E06B; E06B5/00; E06B5/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
196 words
A multiple glazing unit including two glass sheets and an intermediate means comprising at least one sheet of polycarbonate plastic material of high impact resistance interposed between said glass sheets, said intermediate means being mounted in a metal mounting strip positioned between the glass sheets along the edges thereof and, wherein the mounting strip has U-profile, and at at least one of each pair of opposite edges the intermediate means has clearance in the strip for thermal expansion in its own plane greater than the corresponding expansion of the glass sheets, and the U-profile mounting strip, in which the intermediate means is inserted, on the inner side of its flanges at the free edges thereof is formed with a pair of beads engaging the intermediate means while the remaining part of the flanges has a clearance larger than the thickness of the intermediate means, and the U-profile mounting strip on the outer sides of its flanges has projections resting on a pair of hollow metal spacing strips which are localized between the intermediate means and the glass sheets and which are retained together with the U-profile mounting strip between the glass sheets by a sealing composition.
Claim 2
Dependent Claim
196 words
A multiple glazing unit including two glass sheets and an intermediate means comprising at least one sheet of polycarbonate plastic material of high impact resistance interposed between said glass sheets, said intermediate means being mounted in a metal mounting strip positioned between the glass sheets along the edges thereof and, wherein the mounting strip has U-profile, and at at least one of each pair of opposite edges the intermediate means has clearance in the strip for thermal expansion in its own plane greater than the corresponding expansion of the glass sheets, and the U-profile mounting strip, in which the intermediate means is inserted, on the inner side of its flanges at the free edges thereof is formed with a pair of beads engaging the intermediate means while the remaining part of the flanges has a clearance larger than the thickness of the intermediate means, and the U-profile mounting strip on the outer sides of its flanges has projections resting on a pair of hollow metal spacing strips which are localized between the intermediate means and the glass sheets and which are retained together with the U-profile mounting strip between the glass sheets by a sealing composition.
Claim 3
Dependent Claim
21 words
A multiple glazing unit as claimed in claim 1, wherein the intermediate means consists of a single sheet of polycarbonate resin.
Claim 4
Dependent Claim
37 words
A multiple glazing unit as claimed in claim 1, wherein the intermediate means consists of two sheets of polycarbonate resin spaced apart by a strip of a soft elastic material at the marginal portions of said sheets.
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) | 1977-09-23 | 1978-03-25 | 1978-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-23 | 1982-03-25 | 1982-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-23 | 1986-03-25 | 1986-09-24 | $7700.00 | Window Closed / Lapsed |