US5669524A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Enclosures
Assignee: Chem-Tronics Inc
•
Filing: 1994-07-11
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Granted: 1997-09-23
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Expires: 2014-07-11
Abstract
Abstract Lightweight, structurally integral enclosures with walls stiffened and strengthened by integral and joined reinforcing ribs which may also serve as heat sinks. These ribs, which may be capped or uncapped and located on the inner or outer sides of the enclosure walls, are formed by chemical milling. Wall components are preferably joined by electron beam welding. Seals may be used between the walls and a closure to isolate the interior of the enclosure. In electronic applications, conductive seals and sealants are employed to provide uniform and continuous shielding from electromagnetic interference and radio frequency interference.
Inventors
- 👤 Chris W. Loedel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:21
CPC Classifications
H; H05; H05K; H05K9/00; H05K9/0062; H05K7/00; H05K7/14; H05K7/1422; H05K7/1424
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
59 words
A lightweight, structurally integral housing which has walls bounding a defined space, said wails being fabricated entirely of a metallic material and each of said walls being a chemically milled component which has a skin and an array of integral reinforcing ribs on one side of said skin, said ribs being fabricated from the same material as said skin.
Claim 2
Dependent Claim
59 words
A lightweight, structurally integral housing which has walls bounding a defined space, said wails being fabricated entirely of a metallic material and each of said walls being a chemically milled component which has a skin and an array of integral reinforcing ribs on one side of said skin, said ribs being fabricated from the same material as said skin.
Claim 3
Dependent Claim
20 words
An enclosure as defined in claim 1 in which the ribs in the array are arranged in a rectangular pattern.
Claim 4
Dependent Claim
20 words
An enclosure as defined in claim 1 in which the ribs in the array are arranged in a triangular pattern.
Claim 5
Dependent Claim
19 words
An enclosure as defined in claim 1 in which the ribs are located on outer surfaces of said walls.
Claim 6
Dependent Claim
19 words
An enclosure as defined in claim 1 in which the ribs are located on inner surfaces of said walls.
Claim 7
Dependent Claim
31 words
An enclosure as defined in claim 1 in which said walls have separate arrays of primary ribs and secondary ribs, said primary ribs and said secondary ribs having different cross-sectional configurations.
Claim 8
Dependent Claim
21 words
An enclosure as defined in claim 1 or claim 6 in which said walls have ribs with an uncapped cross-sectional configuration.
Claim 9
Dependent Claim
18 words
An enclosure as defined in claim 1 in which said walls have ribs with a capped cross-sectional configuration.
Claim 10
Dependent Claim
29 words
An enclosure as defined in claim 1 in which the metallic material is titanium aluminide; a titanium alloy; or aluminum, nickel niobium, beryllium, or copper or an alloy thereof.
Claim 11
Dependent Claim
28 words
An enclosure as defined in claim 1 in which the metallic material is reinforced with particles of graphite, silicon carbide, silicon nitride, glass fiber, silica, or boron nitride.
References Cited (Backward Citations)
US2755838A
Cited
US2941710A
Cited
US3026539A
Cited
US3358725A
Cited
US4373643A
Cited
US5058747A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-09-22 | 2001-03-24 | 2001-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-09-22 | 2005-03-24 | 2005-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-09-22 | 2009-03-24 | 2009-09-23 | $7700.00 | Window Closed / Lapsed |