Patent US4577826A successfully refreshed from Google Patents.
US4577826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stand structure for supporting electric high voltage equipment
Assignee: ABB Norden Holding AB
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Filing: 1984-07-09
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Granted: 1986-03-25
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Expires: 2004-07-09
Abstract
Abstract A platform for carrying electric high-voltage equipment, such as series-capacitors etc., is supported by insulator columns which are articulated at the upper and lower ends. Bracing takes place with the aid of diagonally-braced insulators which are connected together by means of ropes via a prestressed spring damper. The means provides a high damping and a low natural frequency in case of earthquake stresses. Through the prestressing of the spring damper, the platform will remain stationary at low loads such as wind loads.
Inventors
- 👤 Tommy Bergstrom
- 👤 Goran Boman
- 👤 Leif Englund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:48
CPC Classifications
H; H02; H02B; H02B1/00; H02B1/54; F; F16; F16F; F16F15/00; F16F15/02; H02B5/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
123 words
A stand structure adapted to support electric high-voltage equipment, said structure comprising: a platform on which said equipment can be mounted, a plurality of substantially vertically extending insulator columns carrying said platform, universal joints at opposite ends of said insulator columns articulately connecting said columns at their top to the platform and at their bottom to column foundations, bracing means for said insulator columns, said bracing means including insulators which are stretched cross-diagonally between the ends of two adjacent of said insulator columns and interconnected by means of flexible connecting means, and a spring damper operatively connected to said flexible connecting means, said damper comprising a housing which is fixedly mounted in relation to said column foundations or in relation to said platform.
Claim 2
Dependent Claim
123 words
A stand structure adapted to support electric high-voltage equipment, said structure comprising: a platform on which said equipment can be mounted, a plurality of substantially vertically extending insulator columns carrying said platform, universal joints at opposite ends of said insulator columns articulately connecting said columns at their top to the platform and at their bottom to column foundations, bracing means for said insulator columns, said bracing means including insulators which are stretched cross-diagonally between the ends of two adjacent of said insulator columns and interconnected by means of flexible connecting means, and a spring damper operatively connected to said flexible connecting means, said damper comprising a housing which is fixedly mounted in relation to said column foundations or in relation to said platform.
Claim 3
Dependent Claim
14 words
The stand structure according to claim 1, wherein said flexible connecting means are ropes.
Claim 4
Dependent Claim
15 words
The stand structure according to claim 1, wherein said flexible connecting means are link mechanisms.
Claim 5
Dependent Claim
13 words
A stand structure according to claim 1, wherein said spring damper is prestressed.
Claim 6
Dependent Claim
60 words
A stand structure according to claim 4, wherein said spring damper comprises an elongated housing provided with fixing members, said housing comprising a rod extending axially through the housing, said rod having at its ends connection members for clamping said flexible connecting means as well as cylindrical members supporting against a spring assembly clamped between two shoulders in the housing.
Claim 7
Dependent Claim
15 words
A stand structure according to claim 2, wherein said ropes are provided with prestressing members.
Claim 8
Dependent Claim
36 words
A stand structure according to claim 6, wherein said spring damper and the prestressing members of the ropes are arranged such that the prestressing of the spring damper is greater than the prestressing of the ropes.
Claim 9
Dependent Claim
26 words
A stand structure according to claim 1, wherein said spring damper is so arranged that the natural frequency of the structure is less than 2 Hz.
References Cited (Backward Citations)
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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) | 1989-03-24 | 1989-09-23 | 1990-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-24 | 1993-09-23 | 1994-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-24 | 1997-09-23 | 1998-03-25 | $7700.00 | Window Closed / Lapsed |