US4845344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heated windows
Assignee: BAE Systems PLC
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Filing: 1987-08-06
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Granted: 1989-07-04
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Expires: 2007-08-06
Abstract
Abstract A heatable window, especially for optical equipment, comprising an elongate heating element located in one or more grooves formed in the window and maintained in place by adhesive material.
Inventors
- 👤 Norman W. Price
- 👤 Ian D. Chantler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:56
CPC Classifications
B; B64; B64C; B64C1/00; B64C1/14; B64C1/1476; B64C1/1492; H; H05; H05B; H05B3/00; H05B3/84
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
63 words
An optical window member having a surface and an electrical heating element, said window member comprising: means defining at least one groove in said surface of said window member; an electrically conducting heating element located within said at least one groove; and adhesive means located substantially wholly within said at least one groove, for maintaining said element within said at least one groove.
Claim 2
Dependent Claim
63 words
An optical window member having a surface and an electrical heating element, said window member comprising: means defining at least one groove in said surface of said window member; an electrically conducting heating element located within said at least one groove; and adhesive means located substantially wholly within said at least one groove, for maintaining said element within said at least one groove.
Claim 3
Independent Claim
66 words
A method of making an optical window member having an electrical heating element, said method comprising the steps of: forming at least one groove in a surface of said window member; laying an electrically conducting element in said at least one groove; and bonding said element into said at least one groove by means of adhesive material located substantially wholly within said at least one groove.
Claim 4
Independent Claim
66 words
A method of making an optical window member having an electrical heating element, said method comprising the steps of: forming at least one groove in a surface of said window member; laying an electrically conducting element in said at least one groove; and bonding said element into said at least one groove by means of adhesive material located substantially wholly within said at least one groove.
Claim 5
Dependent Claim
55 words
An optical window member having two opposite surfaces and a peripheral surface extending between said opposite surfaces and an electrical heating element, said window member comprising: means defining at least one groove in one of said opposite surfaces of said window member; and an electrically conducting heating element located within said at least one groove.
Claim 6
Dependent Claim
55 words
An optical window member having two opposite surfaces and a peripheral surface extending between said opposite surfaces and an electrical heating element, said window member comprising: means defining at least one groove in one of said opposite surfaces of said window member; and an electrically conducting heating element located within said at least one groove.
Claim 7
Dependent Claim
57 words
An optical window member have two opposite surfaces and a peripheral surface extending between said opposite surfaces and an electrical heating element, said window member comprising: means defining at least one groove in one of said opposite surfaces of said window member; and means for locating said electrically conducting heating element within said at least one groove.
Claim 8
Dependent Claim
57 words
An optical window member have two opposite surfaces and a peripheral surface extending between said opposite surfaces and an electrical heating element, said window member comprising: means defining at least one groove in one of said opposite surfaces of said window member; and means for locating said electrically conducting heating element within said at least one groove.
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) | 1992-07-03 | 1993-01-02 | 1993-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-03 | 1997-01-02 | 1997-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-03 | 2001-01-02 | 2001-07-04 | $7700.00 | Window Closed / Lapsed |