US4201828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impact resistant safety glass panel
Assignee: Evonik Operations GmbH
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Filing: 1978-06-05
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Granted: 1980-05-06
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Expires: 1998-06-05
Abstract
Abstract Impact resistant glass laminates formed of at least one silicate glass panel and at least one polycarbonate panel bonded together by a methacrylate resin formed from at least 50% by weight of the polymerizable mixture of 2-ethylhexyl methacrylate.
Inventors
- 👤 Wolfgang Triebel
- 👤 Siegfried Hari
- 👤 Hubert Koert
- 👤 Fritz Evers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:33
CPC Classifications
B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10009; B32B17/10018; B32B17/10064; B32B17/1055; B32B17/10743; F; F41; F41H; F41H5/00; F41H5/02; F41H5/04; F41H5/0407; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/31504; Y10T428/31507; Y10T428/31551; Y10T428/31645; Y10T428/31649; Y10T428/31652; Y10T428/31667
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
89 words
Impact resistant glass laminate comprising a silicate panel and a polycarbonate panel, said silicate glass panel being of at least 6 mm in thickness and disposed on the side of the laminate subject to a potential impact and wherein the glass panel is bonded to said polycarbonate panel of at least 1.5 mm in thickness by means of a methacrylate resin cured in situ between said panels, and said resin being formed from at least 50% by weight, based on the total weight of the resin, of 2-ethylhexyl methacrylate.
Claim 2
Dependent Claim
89 words
Impact resistant glass laminate comprising a silicate panel and a polycarbonate panel, said silicate glass panel being of at least 6 mm in thickness and disposed on the side of the laminate subject to a potential impact and wherein the glass panel is bonded to said polycarbonate panel of at least 1.5 mm in thickness by means of a methacrylate resin cured in situ between said panels, and said resin being formed from at least 50% by weight, based on the total weight of the resin, of 2-ethylhexyl methacrylate.
Claim 3
Dependent Claim
18 words
Impact resistant glass as set forth in claim 1, wherein said polycarbonate panel is 2 mm in thickness.
Claim 4
Dependent Claim
28 words
Impact resistant glass as set forth in claim 1, wherein said silicate glass panel is 10 mm in thickness and said polycarbonate panel is 2 mm in thickness.
Claim 5
Dependent Claim
28 words
Impact resistant glass as set forth in claim 1, wherein said silicate glass panel is 12 mm in thickness and said polycarbonate panel is 3 mm in thickness.
Claim 6
Dependent Claim
33 words
Impact resistant glass as set forth in claim 1, wherein a laminate of 2 silicate glass panels each 12 mm in thickness is bonded to one polycarbonate panel of 4 mm in thickness.
Claim 7
Dependent Claim
32 words
Impact resistant glass as set forth in claim 1 wherein said polycarbonate panel is coated on its reverse side against scratching by a thinner silicate panel or a thin scratch resistant coating.
Claim 8
Dependent Claim
47 words
Impact resistant glass as set forth in claim 1 wherein the thickness of said silicate glass panel is from 6 to 12 mm, the thickness of said polycarbonate panel is from 1.5 to 5 mm and the thickness of said resin is from 0.1 to 5 mm.
Claim 9
Dependent Claim
94 words
Impact resistant glass laminate comprising a silicate glass panel and a polycarbonate panel, said silicate glass panel being of at least 6 mm in thickness and disposed on the side of the laminate subject to a potential impact and wherein the glass panel is bonded to said polycarbonate panel of at least 1.5 mm in thickness by inserting a methacrylate syrup between said panels and curing said syrup to form a cured resin, said resin being formed from at least 50% by weight, based on the total weight of the resin, of 2-ethylhexyl methacrylate.
Claim 10
Dependent Claim
94 words
Impact resistant glass laminate comprising a silicate glass panel and a polycarbonate panel, said silicate glass panel being of at least 6 mm in thickness and disposed on the side of the laminate subject to a potential impact and wherein the glass panel is bonded to said polycarbonate panel of at least 1.5 mm in thickness by inserting a methacrylate syrup between said panels and curing said syrup to form a cured resin, said resin being formed from at least 50% by weight, based on the total weight of the resin, of 2-ethylhexyl methacrylate.
Claim 11
Dependent Claim
108 words
Impact resistant glass laminate comprising a silicate glass panel and a polycarbonate panel, said silicate glass panel being of at least 6 mm in thickness and disposed on the side of the laminate subject to a potential impact and wherein the glass panel is bonded to said polycarbonate panel of at least 1.5 mm in thickness by inserting a methacrylate syrup between said panels and curing said syrup at a temperature between 15° C. and 35° C. to form a resin adhesive to bond said panels together, said resin being formed from at least 50% by weight, based on the total weight of the resin, of 2-ethylhexyl methacrylate.
Claim 12
Dependent Claim
108 words
Impact resistant glass laminate comprising a silicate glass panel and a polycarbonate panel, said silicate glass panel being of at least 6 mm in thickness and disposed on the side of the laminate subject to a potential impact and wherein the glass panel is bonded to said polycarbonate panel of at least 1.5 mm in thickness by inserting a methacrylate syrup between said panels and curing said syrup at a temperature between 15° C. and 35° C. to form a resin adhesive to bond said panels together, said resin being formed from at least 50% by weight, based on the total weight of the resin, of 2-ethylhexyl methacrylate.
Claim 13
Dependent Claim
89 words
Impact resistant glass laminate comprising a silicate glass panel and a polycarbonate panel, said silicate glass panel being of at least 6 mm in thickness and disposed on the side of the laminate subject to a potential impact and wherein the glass panel is bonded to said polycarbonate panel of at least 1.5 mm in thickness by curing of a methacrylate syrup which is insearted between said panels, the said syrup consisting of at least 50% by weight, based on the total weight of said syrup, of 2-ethylhexyl methacrylate.
Claim 14
Dependent Claim
89 words
Impact resistant glass laminate comprising a silicate glass panel and a polycarbonate panel, said silicate glass panel being of at least 6 mm in thickness and disposed on the side of the laminate subject to a potential impact and wherein the glass panel is bonded to said polycarbonate panel of at least 1.5 mm in thickness by curing of a methacrylate syrup which is insearted between said panels, the said syrup consisting of at least 50% by weight, based on the total weight of said syrup, of 2-ethylhexyl methacrylate.
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) | 1983-05-06 | 1983-11-05 | 1984-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-05-06 | 1987-11-05 | 1988-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-05-06 | 1991-11-05 | 1992-05-06 | $7700.00 | Window Closed / Lapsed |