US4996095A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite material of aluminum and glass fiber mat, method for its production, and method for utilization as insulator for vehicles
Assignee: Vereinigte Aluminium Werke AG
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Filing: 1988-07-01
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Granted: 1991-02-26
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Expires: 2008-07-01
Abstract
Abstract A layered composite material of aluminum and glass fibers for use as an insulator and a clamping device for use in conjunction with such composites.
Inventors
- 👤 Hans Behdorf
- 👤 Thomas Singe
- 👤 Gerhardt Sollner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:59
CPC Classifications
F; F16; F16B; F16B5/00; F16B5/06; F16B5/0607; F16B5/0621; F16B5/0642; B; B32; B32B; B32B15/00; B32B15/14; B60; B60R; B60R13/00; B60R13/08; B62; B62D; B62D27/00; F16B5/01; F16B5/0657; E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/76; E04B2001/7691; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T442/00; Y10T442/60; Y10T442/654; Y10T442/656
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
98 words
A composite material comprising an aluminum foil sheet having a thickness between 0.05 and 0.25 mm, a fiberglass mat having a thickness of between 3 and 10 mm joined to one side of said foil by a bonding agent, and an aluminum sheet having a thickness of between 0.4 and 0.8 mm joined to the other side of said glass mat by said bonding agent, said bonding agent comprising a heat sealing lacquer comprising an ionomer resin layer having a weight of between 3 and 13 grams per square meter and said composite material being flexible and deformable.
Claim 2
Dependent Claim
98 words
A composite material comprising an aluminum foil sheet having a thickness between 0.05 and 0.25 mm, a fiberglass mat having a thickness of between 3 and 10 mm joined to one side of said foil by a bonding agent, and an aluminum sheet having a thickness of between 0.4 and 0.8 mm joined to the other side of said glass mat by said bonding agent, said bonding agent comprising a heat sealing lacquer comprising an ionomer resin layer having a weight of between 3 and 13 grams per square meter and said composite material being flexible and deformable.
Claim 3
Dependent Claim
23 words
The composite material of claim 1 wherein the aluminum foil sheet is 0.15 mm thick and the aluminum sheet is 0.5 mm thick.
Claim 4
Dependent Claim
35 words
The composite material according to claim 1 wherein the aluminum foil consists of pure aluminum in the cold rolled state and the aluminum sheet consists of pure aluminum which has been cold rolled and annealed.
Claim 5
Dependent Claim
23 words
The composite material according to claim 1 wherein the glass fiber mat has a crude density of 90 to 180 kg/m 3 .
Claim 6
Dependent Claim
18 words
The composite material according to claim 1 wherein the aluminum foil sheet is provided with stamped holow chambers.
Claim 7
Dependent Claim
29 words
The composite material according to claim 1 wherein the thickness ratio of aluminum foil sheet to glass fiber mat to aluminum sheet is substantially 1 : 30 : 3.5.
Claim 8
Dependent Claim
30 words
A composite material as recited in claim 1, wherein the composite material is deformable to a compressed state for shaping and is expandable to its original shape after such shaping.
Claim 9
Dependent Claim
19 words
The composite material of claim 1 wherein the ionomer resin comprises inorganic salt group attached to a polyethylene chain.
Claim 10
Dependent Claim
15 words
The composite material of claim 8 wherein said inorganic salt group is a sodium salt.
Claim 11
Dependent Claim
23 words
The composite material of claim 8 wherein said poly ethylene ionomer resin is a co-polymer of ethylene and methacrylic acid containing sodium ions.
Claim 12
Dependent Claim
27 words
The composite material according to claim 1, wherein the heat-sealing lacquer comprises a dried aqueous dispersion comprising a secondary dispersion that is ammoniacally saponified with anionic emulsifiers.
Claim 13
Dependent Claim
45 words
The composite material according to claim 11 wherein the dispersion has a solids content of 20 to 50% by weight, a viscosity of 100 to 1000 milli Pascal seconds at a pH of 9.8 to 10.5, and a particle size of 1 to 4 microns.
Claim 14
Dependent Claim
18 words
The composite material of claim 12 wherein said glass fibers are between 8 and 11 microns in diameter.
References Cited (Backward Citations)
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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) | 1994-02-25 | 1994-08-27 | 1995-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-02-25 | 1998-08-27 | 1999-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-02-25 | 2002-08-27 | 2003-02-26 | $7700.00 | Window Closed / Lapsed |