US4567710A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple glazed panel
Assignee: Individual
•
Filing: 1985-02-19
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Granted: 1986-02-04
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Expires: 2005-02-19
Abstract
Abstract A double-glazed, light-transmitting panel having a pair of plastic face sheets permanently bonded to and spaced by a mechanically interlocked I-beam grid core. The grid core employs an I-beam spacer attachment which comprises a plurality of I-beams each having a pair of identical flanges joined by an interconnecting web with each of the flanges being formed with a dovetail keyway, a plastic connector seated upon each I-beam flange and having a dovetail tongue engaging a mating dovetail keyway, and an adhesive layer bonding each face sheet to opposing connectors separated by the I-beams. An alternative embodiment for the plastic connector has a generally U-shaped cross section that snaps on the flange of the channel. A method for fabricating a plastic connector by using the I-beam flange as a mold is also disclosed.
Inventors
- 👤 Michael R. Reed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:11
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/66; E06B3/6604; E04; E04C; E04C2/00; E04C2/54
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
120 words
In a double-glazed, light-transmitting panel having a pair of plastic face sheets permanently bonded to and spaced by a mechanically interlocked metal grid core, a grid core having an improved face sheet spacer attachment comprising a plurality of mechanically interlocked beams each having a pair of flanges joined by an inrerconnecting web with each of the flanges being formed with a connector locking keyway, a plastic connector seated upon each beam flange and having a locking tongue engaging a mating keyway and with each connector being fabricated of a plastic having substantially the same temperature coefficient of expansion as the plastic face sheets, and a plurality of adhesive layers bonding each face sheet to opposing connectors separated by the beams.
Claim 2
Dependent Claim
120 words
In a double-glazed, light-transmitting panel having a pair of plastic face sheets permanently bonded to and spaced by a mechanically interlocked metal grid core, a grid core having an improved face sheet spacer attachment comprising a plurality of mechanically interlocked beams each having a pair of flanges joined by an inrerconnecting web with each of the flanges being formed with a connector locking keyway, a plastic connector seated upon each beam flange and having a locking tongue engaging a mating keyway and with each connector being fabricated of a plastic having substantially the same temperature coefficient of expansion as the plastic face sheets, and a plurality of adhesive layers bonding each face sheet to opposing connectors separated by the beams.
Claim 3
Dependent Claim
21 words
The combination of claim 1 in which the face sheets and the connectors have essentially the same temperature coefficient of expansion.
Claim 4
Dependent Claim
19 words
The combination of claim 2 in which the face sheets and the connectors have essentially the same plastic formulation.
Claim 5
Dependent Claim
19 words
The combination of claim 1 in which the connector locking keyway and connector locking tongue have mating dovetail cross-sections.
Claim 6
Dependent Claim
13 words
The combination of claim 1 in which the plurality of beams are I-beams.
Claim 7
Dependent Claim
25 words
The combination of claim 5 in which the plastic face sheets are fabricated of translucent fiberglass reinforced polyester resin and the beams are aluminum I-beams.
Claim 8
Dependent Claim
105 words
In a double-glazed, light-transmitting panel having a pair of plastic face sheets permanently bonded to and spaced by a mechanically interlocked metal grid core, a grid core having an improved face sheet spacer attachment comprising a plurality of beams each having a pair of flanges joined by an interconnecting web, a plastic connector seated upon each flange and having a cross-section which locks to each flange and with each connector being fabricated of a plastic having substantially the same temperature coefficient of expansion as the plastic face sheets, and a plurality of adhesive layers bonding each face sheet to opposing connectors separated by the beams.
Claim 9
Dependent Claim
105 words
In a double-glazed, light-transmitting panel having a pair of plastic face sheets permanently bonded to and spaced by a mechanically interlocked metal grid core, a grid core having an improved face sheet spacer attachment comprising a plurality of beams each having a pair of flanges joined by an interconnecting web, a plastic connector seated upon each flange and having a cross-section which locks to each flange and with each connector being fabricated of a plastic having substantially the same temperature coefficient of expansion as the plastic face sheets, and a plurality of adhesive layers bonding each face sheet to opposing connectors separated by the beams.
Claim 10
Dependent Claim
42 words
The combination of claim 7 in which each plastic connector has a generally U-shaped cross-section in which each of the spaced legs defining the sides of the generally U-shaped connector is formed with a locking lip which engages a mating beam flange.
Claim 11
Dependent Claim
13 words
The combination of claim 8 in which the plurality of beams are I-beams.
Claim 12
Independent Claim
120 words
A method of fabricating a double-glazed, light-transmitting panel having a pair of plastic face sheets permanently bonded to and spaced by a mechanically interlocked I-beam grid core, with the grid core employing I-beam spacer attachments each formed from a plurality of I-beams having a pair of identical flanges joined by an interconnecting web with each of the flanges having a dovetail keyway and a pair of spaced sidewalls defining a plastic cavity mold comprising the steps of pouring a liquid plastic into the plastic cavity mold to form a plastic connector locked to each flange, removing the sidewalls from the flange, and bonding the pair of face sheets in a spaced relationship to the connectors formed in each I-beam flange.
Claim 13
Independent Claim
120 words
A method of fabricating a double-glazed, light-transmitting panel having a pair of plastic face sheets permanently bonded to and spaced by a mechanically interlocked I-beam grid core, with the grid core employing I-beam spacer attachments each formed from a plurality of I-beams having a pair of identical flanges joined by an interconnecting web with each of the flanges having a dovetail keyway and a pair of spaced sidewalls defining a plastic cavity mold comprising the steps of pouring a liquid plastic into the plastic cavity mold to form a plastic connector locked to each flange, removing the sidewalls from the flange, and bonding the pair of face sheets in a spaced relationship to the connectors formed in each I-beam flange.
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) | 1989-02-03 | 1989-08-05 | 1990-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-02-03 | 1993-08-05 | 1994-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-02-03 | 1997-08-05 | 1998-02-04 | $7700.00 | Window Closed / Lapsed |