US4463530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame-viewing window assembly
Assignee: TRUBE & KINGS KG A CORP OF GERMANY
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Filing: 1981-11-02
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Granted: 1984-08-07
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Expires: 2001-11-02
Abstract
Abstract A flame window adapted to serve window separating a flame side from another side of a structure or vehicle or as a viewing window for a firebox or the like comprises a frame in which a lime-soda-silicate (soda-lime) glass is anchored by clamping all around its periphery in a heat-insulating bed. The soda-lime glass has a product of thermal coefficient of linear expansion and modulus of elasticity which is greater than 0.5 N·mm -2 ·k -1 .
Inventors
- 👤 Albert Breithaupt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:46
CPC Classifications
E; E06; E06B; E06B5/00; E06B5/10; E06B5/16; E06B5/165; E06B3/00; E06B3/54; E06B3/58; E06B3/585; E06B3/5857; E06B3/5864
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
114 words
A fire window assembly adapted to separate a fire space from another space, said assembly comprising: a frame having an inwardly open channel all around the frame; a pane of soda lime glass having a thickness of at least 3 mm received in said frame with a continuous peripheral edge portion extending into said channel to a depth less than 16 mm; a bedding mass of low thermal conductivity enclosing said edge portion in said channel and thermally insulating said pane from said frame, said pane being composed of a lime-soda-silicate glass with a product of thermal coefficient of linear expansion and modulus of elasticity which is greater than 0.5N·mm -2 ·K -1 .
Claim 2
Dependent Claim
114 words
A fire window assembly adapted to separate a fire space from another space, said assembly comprising: a frame having an inwardly open channel all around the frame; a pane of soda lime glass having a thickness of at least 3 mm received in said frame with a continuous peripheral edge portion extending into said channel to a depth less than 16 mm; a bedding mass of low thermal conductivity enclosing said edge portion in said channel and thermally insulating said pane from said frame, said pane being composed of a lime-soda-silicate glass with a product of thermal coefficient of linear expansion and modulus of elasticity which is greater than 0.5N·mm -2 ·K -1 .
Claim 3
Dependent Claim
28 words
The assembly defined in claim 1, further comprising means for applying a pressure to said edge portion of said pane in said frame up to 50N/cm 2 .
Claim 4
Dependent Claim
26 words
The assembly defined in claim 1 wherein said pane is a float glass formed with a reflective layer having a life of up to 15 minutes.
Claim 5
Dependent Claim
19 words
The assembly defined in claim 1 wherein said frame has low mass and heat capacity but high thermal conductivity.
Claim 6
Dependent Claim
12 words
The assembly defined in claim 1 wherein said frame has dark-colored surfaces.
Claim 7
Dependent Claim
12 words
The assembly defined in claim 1 wherein said pane has ground edges.
Claim 8
Dependent Claim
11 words
The assembly defined in claim 6 wherein said edges are polished.
Claim 9
Dependent Claim
12 words
The assembly defined in claim 1 wherein said pane has bevelled edges.
Claim 10
Dependent Claim
24 words
The assembly defined in claim 1 wherein the thickness of the glass of said pane is greater along said edge portions than inwardly thereof.
Claim 11
Dependent Claim
16 words
The assembly defined in claim 1 wherein said edge portions are enveloped in a protective layer.
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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) | 1987-08-07 | 1988-02-06 | 1988-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-07 | 1992-02-06 | 1992-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-07 | 1996-02-06 | 1996-08-07 | $7700.00 | Window Closed / Lapsed |