Patent US4899892A successfully refreshed from Google Patents.
US4899892A
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Earthquake-resistant electronic equipment frame
Assignee: Nortel Networks Ltd
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Filing: 1988-03-08
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Granted: 1990-02-13
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Expires: 2008-03-08
Abstract
Abstract An electronic equipment frame comprises a base, two vertical elongate side members bolted to the base and extending upwardly therefrom for supporting electronic equipment shelves therebetween, and a top member welded to and extending between upper ends of the side members. Each side member has a relatively wide front lipped flange, providing shelf mounting holes and slots through which cables may pass, and a relatively narrow rear lipped flange, with a central portion extending therebetween. The central portion has an upstanding inverted-V portion positioned between the flanges, which define a cable duct therebetween. The frame has relatively high natural frequencies, whereby it is able to withstand earthquakes.
Inventors
- 👤 Denis J. A. Rheault
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:48
CPC Classifications
H; H05; H05K; H05K5/00; H05K5/02; H05K5/0204; H02; H02B; H02B1/00; H02B1/54; H02B1/26; H02B1/30
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
129 words
An earthquake-resistant electronic equipment frame comprising: a base; two elongate substantially parallel side members, secured to and extending upwardly from the base, including means for supporting electronic equipment therebetween; and a top member secured to and extended between upper ends of the side members; each side member having a cross-section consisting of a front flange, a rear flange, and a central portion extending therebetween, the central portion including an inverted-V portion extending from a general plane of the central portion of each side member on the same side thereof as the front and rear flanges, along substantially the entire length of the side m ember, and the front and rear flanges of each side member extending a substantially different distance from the central portion of each respective side member.
Claim 2
Dependent Claim
129 words
An earthquake-resistant electronic equipment frame comprising: a base; two elongate substantially parallel side members, secured to and extending upwardly from the base, including means for supporting electronic equipment therebetween; and a top member secured to and extended between upper ends of the side members; each side member having a cross-section consisting of a front flange, a rear flange, and a central portion extending therebetween, the central portion including an inverted-V portion extending from a general plane of the central portion of each side member on the same side thereof as the front and rear flanges, along substantially the entire length of the side m ember, and the front and rear flanges of each side member extending a substantially different distance from the central portion of each respective side member.
Claim 3
Dependent Claim
24 words
An electronic equipment frame as claimed in claim 1 wherein the top member is welded and the base is bolted to the side members.
Claim 4
Dependent Claim
27 words
An electronic equipment frame as claimed in claim 1 wherein for each side member the front flange extends further from the central portion than the rear flange.
Claim 5
Dependent Claim
31 words
An electronic equipment frame as claimed in claim 1 wherein for each side member the flanges are substantially perpendicular to the general plane of the central portion of the side member.
Claim 6
Dependent Claim
32 words
An electronic equipment frame as claimed in claim 1 wherein each side member includes a lip on an elongate edge of each flange, the lips being substantially perpendicular to the respective flanges.
Claim 7
Dependent Claim
23 words
An electronic equipment frame as claimed in claim 1 wherein the inverted-V portion of each side member has apertures spaced along its length.
Claim 8
Dependent Claim
21 words
An electronic equipment frame as claimed in claim 1 wherein the inverted-V portion has an apical angle of substantially 90 degrees.
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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) | 1993-02-12 | 1993-08-14 | 1994-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-12 | 1997-08-14 | 1998-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-12 | 2001-08-14 | 2002-02-13 | $7700.00 | Window Closed / Lapsed |