US4601953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rolling shutter bar
Assignee: Gebr KOMMERLING KUNSTSTOFFWERKE ZWEIBRUCKERSTRASSE 200 D-6780 PRIMASENS / GERMANY GmbH
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Filing: 1985-02-27
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Granted: 1986-07-22
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Expires: 2005-02-27
Abstract
Abstract In a hollow plastic rolling shutter slat coated on the weather side with a metal layer for reducing the heat transfer while retaining the resistance to bending the inner side of the building-side profile wall is also coated with a metal layer, a minimum spacing always being provided between the two metal layers to insure the thermal insulation. The metal layers have at least one surface reflecting thermal radiation or reducing thermal irradiation. For obtaining the necessary resistance to bending the inner transverse webs of the hollow plastic rolling shutter bar are formed in such a manner that they transmit the shear stresses occurring on bending.
Inventors
- 👤 Dieter Haffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:32
CPC Classifications
E; E06; E06B; E06B9/00; E06B9/02; E06B9/08; E06B9/11; E06B9/15; E06B9/165; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
133 words
A rolling shutter bar comprising a hollow plastic member having a weather-side wall and a building side wall, said walls being spaced from each other to form a hollow therebetween by plastic web members molded thereon and extending therebetween, a first metal layer covering the outer exposed surface of said weather-side wall and adhered to the surface thereof, a second metal layer covering the surface of said building side wall in said hollow between said walls and adhered to the hollow wall surface of said building side wall, said metal layer coverings reinforcing said walls, said webs between said walls having a thickness adequate to transmit longitudinal shear stresses applied to said reinforced walls, at least one of said metal layer coverings having a surface for reflecting thermal radiation and reducing thermal irradiation.
Claim 2
Dependent Claim
133 words
A rolling shutter bar comprising a hollow plastic member having a weather-side wall and a building side wall, said walls being spaced from each other to form a hollow therebetween by plastic web members molded thereon and extending therebetween, a first metal layer covering the outer exposed surface of said weather-side wall and adhered to the surface thereof, a second metal layer covering the surface of said building side wall in said hollow between said walls and adhered to the hollow wall surface of said building side wall, said metal layer coverings reinforcing said walls, said webs between said walls having a thickness adequate to transmit longitudinal shear stresses applied to said reinforced walls, at least one of said metal layer coverings having a surface for reflecting thermal radiation and reducing thermal irradiation.
Claim 3
Dependent Claim
34 words
Rolling shutter bar according to claim 1, in which the two metal layers have everywhere a minimum spacing from each other which is substantially equal to the smallest thickness of the rolling shutter bar.
Claim 4
Dependent Claim
32 words
A rolling shutter bar according to claim 1, in which said second metal layer is formed from a metal strip perforated at the connections of said webs to said building side wall.
Claim 5
Dependent Claim
18 words
A rolling shutter bar according to claim 3 in which said perforations are formed by closely adjacent slots.
Claim 6
Dependent Claim
34 words
A rolling shutter bar according to claim 1, in which said second metal layer is adhered to said hollow wall surface of said building side wall and said webs for transmitting sheer stresses therebetween.
Claim 7
Dependent Claim
41 words
A rolling shutter bar according to claim 1 in which said second metal layer is formed by at least two sheet metal sub-strips which are arranged between the transitions of the webs and building-side profile wall at the inner side thereof.
Claim 8
Dependent Claim
20 words
A rolling shutter bar according to claim 6, in which the sheet metal sub-strips have at least one guide rabbet.
Claim 9
Dependent Claim
27 words
A rolling shutter bar according to claim 1, in which the metal layers are formed from thin aluminum sheet having a preferred thickness of about 0.2 mm.
Claim 10
Dependent Claim
41 words
A rolling shutter bar according to claim 1, in which said first metal layer covering the outside of the weather-side wall is provided with a treatment which promotes the effect of said surface of reflecting thermal radiation and reducing thermal irradiation.
Claim 11
Dependent Claim
21 words
A rolling shutter bar according to claim 1, in which the ends of the rolling shutter bar are sealed with foam.
References Cited (Backward Citations)
FR2322254A1
Cited
FR2352148A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-07-21 | 1990-01-20 | 1990-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-21 | 1994-01-20 | 1994-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-21 | 1998-01-20 | 1998-07-22 | $7700.00 | Window Closed / Lapsed |