US4550986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Layered mirrors including a compressible layer and a polyurethane skin
Assignee: Chelsea Artisans Ltd
•
Filing: 1983-07-12
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Granted: 1985-11-05
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Expires: 2003-07-12
Abstract
Abstract In a shockproof mirror of the kind comprising a glass or plastics sheet or film backed with a reflecting layer which is bonded to a flexible and resiliently compressible foam pad by means of which the whole is intended to be glued to a substantially rigid support structure, e.g. wall or ceiling, by means of an adhesive composition containing a volatile liquid component, degradative attack of the foam and/or of the adhesive bond between the foam and the reflecting layer by said volatile adhesive component is reduced or prevented by heat bonding a substantially impermeable polyurethane skin to the exposed face of the foam.
Inventors
- 👤 Roger J. Leach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:09
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/18; G; G02; G02B; G02B7/00; G02B7/18; G02B7/182; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/249988; Y10T428/249989
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
66 words
In a mirror structure comprising a transparent facing lamina backed by a layer of reflecting material and wherein said layer of reflecting material is bonded to a flexible and resiliently compressible layer of polymeric foam, the improvement wherein a flexible and substantially impermeable polyurethane skin is heat bonded to the face of the foam layer opposite that to which said layer of reflecting material is bonded.
Claim 2
Dependent Claim
66 words
In a mirror structure comprising a transparent facing lamina backed by a layer of reflecting material and wherein said layer of reflecting material is bonded to a flexible and resiliently compressible layer of polymeric foam, the improvement wherein a flexible and substantially impermeable polyurethane skin is heat bonded to the face of the foam layer opposite that to which said layer of reflecting material is bonded.
Claim 3
Dependent Claim
30 words
A mirror structure as claimed in claim 1 characterised in that one face of the foam layer is provided with a stabilising web which is bonded to the foam layer.
Claim 4
Dependent Claim
39 words
A mirror structure as claimed in claim 1 characterised in that there is provided between the foam layer and the layer of adheive which bonds said form layer to said layer of reflecting material, a flexible moisture-impermeable microporous membrane.
Claim 5
Dependent Claim
23 words
A mirror structure as claimed in claim 3 in which said membrane is thermoplastic and is bonded to the foam layer by heat.
Claim 6
Dependent Claim
39 words
A mirror structure as claimed in claim 2 characterised in that there is provided between the foam layer and the layer of adhesive which bonds said foam layer to said layer of reflecting material, a flexible moisture-impermeable microporous membrane.
Claim 7
Dependent Claim
23 words
A mirror structure as claimed in claim 5 in which said membrane is thermoplastic and is bonded to the foam layer by heat.
Claim 8
Independent Claim
102 words
A method of bonding a mirror structure, including a transparent facing lamina backed by a layer of reflecting material, to a substantially rigid support surface by means of an adhesive composition which includes a volatile liquid component, said method comprising the steps of interposing a flexible and resiliently compressible layer of a polymeric foam between said layer of reflecting material and said support surface, interposing between the foam layer and the support surface a flexible and substantially impermeable polyurethane skin, heat bonding said skin to the foam layer, and boding the skin to the support surface by means of the adhesive composition.
Claim 9
Independent Claim
102 words
A method of bonding a mirror structure, including a transparent facing lamina backed by a layer of reflecting material, to a substantially rigid support surface by means of an adhesive composition which includes a volatile liquid component, said method comprising the steps of interposing a flexible and resiliently compressible layer of a polymeric foam between said layer of reflecting material and said support surface, interposing between the foam layer and the support surface a flexible and substantially impermeable polyurethane skin, heat bonding said skin to the foam layer, and boding the skin to the support surface by means of the adhesive composition.
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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) | 1988-11-04 | 1989-05-06 | 1989-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-04 | 1993-05-06 | 1993-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-04 | 1997-05-06 | 1997-11-05 | $7700.00 | Window Closed / Lapsed |