Patent US3701929A successfully refreshed from Google Patents.
US3701929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three-phase bus system and interconnecting member
Assignee: Toshiba Corp
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Filing: 1971-05-11
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Granted: 1972-10-31
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Expires: 1991-05-11
Abstract
Abstract A three-phase bus system is disclosed which employs a connecting structure, which is adapted for connecting the lead-out bushings of a three-phase power transformer to three-phase bus conductors. The connecting structure includes a T-shaped member having two arms and a leg. The two arms of the T-shaped member are slidably supported in the bus conductors. A bent connecting conductor is provided for connecting a bushing terminal to the leg of the Tshaped member in a slidable and rotatable fashion whereby freedon of connection during assembly can be readily obtained.
Inventors
- 👤 Kazuo Taguchi
- 👤 Hiroaki Tsuchida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:20
CPC Classifications
H; H02; H02B; H02B13/00; H02B13/02; H02B13/035; H02B13/0352
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
106 words
A three-phase bus system connecting one electrical installation having three lead-out bushings with terminals to another electrical installation, comprising: three phase conductors located within a bus duct along the lengthwise direction thereof; interconnecting members for each of said three phase conductors respectively having at least one arm and a leg, said one arm being slidably connected to a respective end of said three phase conductors; and connecting rigid conductors, each having one end connected to said respective legs of said interconnecting members in a slidable and rotatable fashion and the other end connected to respective terminals of said lead-out bushings in a slidable and rotatable fashion.
Claim 2
Dependent Claim
106 words
A three-phase bus system connecting one electrical installation having three lead-out bushings with terminals to another electrical installation, comprising: three phase conductors located within a bus duct along the lengthwise direction thereof; interconnecting members for each of said three phase conductors respectively having at least one arm and a leg, said one arm being slidably connected to a respective end of said three phase conductors; and connecting rigid conductors, each having one end connected to said respective legs of said interconnecting members in a slidable and rotatable fashion and the other end connected to respective terminals of said lead-out bushings in a slidable and rotatable fashion.
Claim 3
Dependent Claim
29 words
The invention according to claim 1, wherein: said three lead-out bushings are mounted on an electrical power transformer and are positioned approximately at the apexes of a regular triangle.
Claim 4
Dependent Claim
21 words
The invention according to claim 2, wherein: said three lead-out bushings are mounted within an enclosure filled with an insulating gas.
References Cited (Backward Citations)
US1962326A
Cited
GB328916A
Cited
GB382000A
Cited
GB382795A
Cited
US2069575A
Cited
FR1325862A
Cited
FR1362997A
Cited
AT245093B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-31 | 1976-05-01 | 1976-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-31 | 1980-05-01 | 1980-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-31 | 1984-05-01 | 1984-10-31 | $7700.00 | Window Closed / Lapsed |