US4683172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making safety or impact resistant laminates
Assignee: General Electric Co
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Filing: 1984-08-14
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Granted: 1987-07-28
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Expires: 2004-08-14
Abstract
Abstract Safety or impact resistant laminates which avoid the application of heat and excessive pressure in their construction comprising a plurality of laminae, at least one interlayer interposed between any two of the laminae, and a sufficient number of adhesive layers, at least one a contact or pressure sensitive adhesive, to bond all the laminae and interlayers.
Inventors
- 👤 Donald G. LeGrand
- 👤 William V. Olszewski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:15
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/36; B32B27/365; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10009; B32B17/10018; B32B17/1055; B32B17/10743; B32B17/10752; B32B7/00; B32B7/04; B32B7/12; F; F41; F41H; F41H5/00; F41H5/02; F41H5/04; F41H5/0407; F41H5/0471; F41H5/0478; B32B2369/00; B32B2605/00; B32B2605/006; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507; Y10T428/31511; Y10T428/31515; Y10T428/31518; Y10T428/31533; Y10T428/31551; Y10T428/31598; Y10T428/31601; Y10T428/31609; Y10T428/31612; Y10T428/31627; Y10T428/3163; Y10T428/31645; Y10T428/31649; Y10T428/31652; Y10T428/31663; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/31917
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
73 words
A safety or impact resistant optically transparent laminate comprising (a) a plurality of laminae, at least one of which is a rigid lamina (b) at least one single interlayer interposed between any two of said laminae (c) a sufficient number of contact or pressure sensitive adhesive layers to bond all of said laminae and said interlayers, at least one of which adhesive layers is positioned adjacent to at least one of said interlayers.
Claim 2
Dependent Claim
73 words
A safety or impact resistant optically transparent laminate comprising (a) a plurality of laminae, at least one of which is a rigid lamina (b) at least one single interlayer interposed between any two of said laminae (c) a sufficient number of contact or pressure sensitive adhesive layers to bond all of said laminae and said interlayers, at least one of which adhesive layers is positioned adjacent to at least one of said interlayers.
Claim 3
Dependent Claim
52 words
A safety or impact resistance optically transparent laminate comprising (a) a rigid lamina (b) at least one flexible lamina (c) at least on single interlayers interposed between any two of said laminae (d) a sufficient number of contact or pressure sensitive ahesive layers to bond all of said laminae and said interlayers.
Claim 4
Dependent Claim
52 words
A safety or impact resistance optically transparent laminate comprising (a) a rigid lamina (b) at least one flexible lamina (c) at least on single interlayers interposed between any two of said laminae (d) a sufficient number of contact or pressure sensitive ahesive layers to bond all of said laminae and said interlayers.
Claim 5
Dependent Claim
15 words
The safety laminate of claim 2 wherein a single interlayer is interposed between all laminae.
Claim 6
Dependent Claim
29 words
The laminate of claim 3 wherein said rigid lamina is of glass, said at least one flexible lamina is of polycarbonate, and asid interlayer is of polydiorganosiloxane-polycarbonate block copolymer.
Claim 7
Independent Claim
109 words
A method for constructing safety or impact resistant optically transparent laminates comprising the steps of: (a) bringing into layered contact in such a way as to allow air to escape (i) a rigid lamina (ii) at least one flexible lamina (iii) a sufficient number of interlayers to have a single interlayer interposed between all laminae (iv) a sufficient number of contact or pressure sensitive adhesive layers to have a single such adhesive layer interposed between all laminae and interlayers; whereby a alyered composite is formed; and (b) applying sufficient pressure at ambient temperatures to said layered composite to activate said contact or pressure sensitive adhesive layerand bond the laminate.
Claim 8
Independent Claim
109 words
A method for constructing safety or impact resistant optically transparent laminates comprising the steps of: (a) bringing into layered contact in such a way as to allow air to escape (i) a rigid lamina (ii) at least one flexible lamina (iii) a sufficient number of interlayers to have a single interlayer interposed between all laminae (iv) a sufficient number of contact or pressure sensitive adhesive layers to have a single such adhesive layer interposed between all laminae and interlayers; whereby a alyered composite is formed; and (b) applying sufficient pressure at ambient temperatures to said layered composite to activate said contact or pressure sensitive adhesive layerand bond the laminate.
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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) | 1990-07-27 | 1991-01-26 | 1991-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-27 | 1995-01-26 | 1995-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-27 | 1999-01-26 | 1999-07-28 | $7700.00 | Window Closed / Lapsed |