Patent US3958053A successfully refreshed from Google Patents.
US3958053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Articles having integral transparent or translucent panels
Assignee: Imperial Chemical Industries Ltd
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Filing: 1974-06-03
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Granted: 1976-05-18
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Expires: 1994-06-03
Abstract
Abstract Shaped articles such as doors, internal partitions and other building elements, are composed of a cellular thermoplastic material, and have at least one integral non-cellular transparent or translucent panel. The thermoplastic material is preferably a water-extended polymer, and may contain a colouring agent dispersed therethrough, e.g. a dye or pigment, or may be printed. The panels may be embossed to provide a visible decoration. Compared with equivalent articles having separately glazed panels as previously known, the present integral panels remove the need to fit and secure separate panes, e.g. of glass, during assembly, they provide a more unified appearance, and give designers greater scope in enabling them to incorporate panel shapes which would previously have been impossible or uneconomic to use.
Inventors
- 👤 James Ernest Ryan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:24
CPC Classifications
B; B29; B29C; B29C67/00; B29C67/20; B29C67/202; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B27/30; B32B27/308; C; C08; C08J; C08J9/00; C08J9/28; C08J9/283; C08J9/36; E; E04; E04C; E04C2/00; E04C2/54; B32B2305/00; B32B2305/02; B32B2307/00; B32B2307/40; B32B2307/412; B32B2307/414; B32B2607/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24496; Y10T428/24504; Y10T428/24595; Y10T428/24603; Y10T428/24612; Y10T428/249921; Y10T428/249953; Y10T428/249975; Y10T428/249987; Y10T428/249988; Y10T428/249989
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
75 words
A building element comprising at least one substantially opaque cellular sheet and at least one substantially non-cellular transparent or translucent panel in and integral with said sheet and in which the panel is an area which has been rendered non-cellular to provide its transparency or translucency, and wherein the sheet and panel are composed of a water-extended thermoplastic polymer, which has been subsequently substantially freed of water to provide the cells of the cellular structure.
Claim 2
Dependent Claim
75 words
A building element comprising at least one substantially opaque cellular sheet and at least one substantially non-cellular transparent or translucent panel in and integral with said sheet and in which the panel is an area which has been rendered non-cellular to provide its transparency or translucency, and wherein the sheet and panel are composed of a water-extended thermoplastic polymer, which has been subsequently substantially freed of water to provide the cells of the cellular structure.
Claim 3
Dependent Claim
23 words
A building element as claimed in claim 1 wherein the panel is an area of collapsed cellular structure of the cellular opaque sheet.
Claim 4
Dependent Claim
59 words
A building element according to claim 1 in the form of an office or domestic door, wherein the at least one sheet comprises a plurality of the integral panels to provide decorative transparent or translucent areas which allow light to pass through the door, the thermoplastic polymer comprising a thermoplastic homopolymer of methyl methacrylate or copolymer of methyl methacrylate.
Claim 5
Dependent Claim
113 words
An office or domestic door comprising at least one substantially opaque cellular sheet placed together with at least one sheet of a differing composition and having a plurality of substantially non-cellular decorative transparent or translucent panels in and integral with said sheets which allow light to pass through the door, said panels being areas which have been rendered non-cellular to provide the transparency or translucency and form a laminate of the two sheets of differing composition, and wherein the sheet and panel are composed of a water-extended thermoplastic homopolymer of methyl methacrylate or copolymer of methyl methacrylate which has been subsequently substantially freed of water to provide the cells of the cellular structure.
Claim 6
Dependent Claim
113 words
An office or domestic door comprising at least one substantially opaque cellular sheet placed together with at least one sheet of a differing composition and having a plurality of substantially non-cellular decorative transparent or translucent panels in and integral with said sheets which allow light to pass through the door, said panels being areas which have been rendered non-cellular to provide the transparency or translucency and form a laminate of the two sheets of differing composition, and wherein the sheet and panel are composed of a water-extended thermoplastic homopolymer of methyl methacrylate or copolymer of methyl methacrylate which has been subsequently substantially freed of water to provide the cells of the cellular structure.
Claim 7
Dependent Claim
29 words
A door according to claim 4 in which the thermoplastic material is transparent but which contains sufficient filler to scatter the light passing through it and render it translucent.
Claim 8
Dependent Claim
20 words
A door according to claim 4 having on at least a part of its exposed surface, an integral noncellular skin.
Claim 9
Dependent Claim
27 words
A door according to claim 4 having two substantially parallel faces, wherein at least one of the panels is located intermediate the levels of said two faces.
Claim 10
Dependent Claim
23 words
A door according to claim 6 in which at least one of the panels is flush with and continuous with the non-cellular skin.
Claim 11
Dependent Claim
21 words
A door according to claim 4 in which at least one of the panels is embossed to a non-planar cross section.
Claim 12
Dependent Claim
17 words
A door according to claim 4 in which the two compositions differ in respect of their colour.
References Cited (Backward Citations)
US3432380A
Cited
US3802949A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-05-18 | 1979-11-17 | 1980-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-18 | 1983-11-17 | 1984-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-18 | 1987-11-17 | 1988-05-18 | $7700.00 | Window Closed / Lapsed |