Patent US3780355A successfully refreshed from Google Patents.
US3780355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal enclosed switchgear with j-shaped vertically disposed conductors
Assignee: Westinghouse Electric Corp
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Filing: 1973-01-17
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Granted: 1973-12-18
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Expires: 1993-01-17
Abstract
Abstract Each section of a three-phase metal-enclosed switchgear unit is provided with main through horizontal bus and generally J-shaped vertical section bus. The J-shaped vertically extending risers are connected to the horizontal main through bus, and feed circuit breakers or other branch bus circuit controlling devices mounted in the switchgear unit. A small section of the J-shaped bus is turned around and butt welded to the back of the J-shaped vertical section bus, where a connection to the main through horizontal bus is desired.
Inventors
- 👤 J Salvati
- 👤 L Ricci
- 👤 C Merola
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:43
CPC Classifications
H; H02; H02B; H02B1/00; H02B1/20
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
128 words
A metal enclosed switchgear unit comprising: a generally rectangular section structure; three horizontally extending main through bus bar conductors disposed horizontally in a spaced apart relationship in said rectangular section; three vertical risers disposed in said rectangular section in front of said main horizontal through bus bar conductors; connector means electrically connecting each phase of said horizontal main through bus conductor to its associated vertical riser; and each of said vertIcal risers comprising a bight portion having a front facing flat surface, a first short leg portion extending rearwardly in close proximity to one edge of said bight portion and a second long leg portion being relatively longer than said first short leg portion and extending rearwardly in close proximity to the other edge of said bight portion.
Claim 2
Dependent Claim
128 words
A metal enclosed switchgear unit comprising: a generally rectangular section structure; three horizontally extending main through bus bar conductors disposed horizontally in a spaced apart relationship in said rectangular section; three vertical risers disposed in said rectangular section in front of said main horizontal through bus bar conductors; connector means electrically connecting each phase of said horizontal main through bus conductor to its associated vertical riser; and each of said vertIcal risers comprising a bight portion having a front facing flat surface, a first short leg portion extending rearwardly in close proximity to one edge of said bight portion and a second long leg portion being relatively longer than said first short leg portion and extending rearwardly in close proximity to the other edge of said bight portion.
Claim 3
Dependent Claim
48 words
A metal enclosed switchgear unit as claimed in claim 1 wherein a plurality of enclosures for housing circuit breakers are formed in the front of said rectangular section and a plurality of electrical circuit breakers are supported in said enclosures and are electrically connected to said vertical risers.
Claim 4
Dependent Claim
95 words
A metal enclosed switchgear unit as claimed in claim 1 wherein said connector means comprises a bight portion having a rear facing flat surface, a first short leg portion extending forward in close proximity to one end of said bight portion and a second long leg portion extending forward in close proximity to the other end of said bight portion, said rear facing flat surface being connected to said horizontal through bus and said first forward extending short leg portion and said second forward extending long leg portion being connected to said vertical section bus.
Claim 5
Dependent Claim
35 words
A metal enclosed switchgear unit as claimed in claim 1, wherein said front facing flat surface of each vertical riser includes a plurality of evenly spaced holes therein facing the front of said switchgear unit.
Claim 6
Dependent Claim
36 words
A metal enclosed switchgear unit as claimed in claim 1, wherein said second long leg portion of said vertical riser is at least twice as long as said first short leg portion of said vertical riser.
Claim 7
Dependent Claim
34 words
A metal enclosed switchgear unit as claimed in claim 2, wherein the cross-sectional area of each of said connector means is substantially equal to the cross-sectional area of each of said vertical section bus.
Claim 8
Dependent Claim
36 words
A metal enclosed switchgear unit as claimed in claim 6, wherein the length of each of said connector means is substantially equal to the width of each of said horizontally extending main through bus bar conductors.
Claim 9
Dependent Claim
73 words
A metal enclosed switchgear unit comprising three horizontally extending main through bus bar conductors disposed horizontally in a spaced apart relationship in said switchgear unit; three vertical risers disposed in said switchgear unit in front of said main horizontal through bus bar conductors; connector means electrically connecting each phase of said horizontal main through bus conductors to its associated vertical riser; and each of said vertical risers comprising a generally J-shaped cross-sectional area.
Claim 10
Dependent Claim
73 words
A metal enclosed switchgear unit comprising three horizontally extending main through bus bar conductors disposed horizontally in a spaced apart relationship in said switchgear unit; three vertical risers disposed in said switchgear unit in front of said main horizontal through bus bar conductors; connector means electrically connecting each phase of said horizontal main through bus conductors to its associated vertical riser; and each of said vertical risers comprising a generally J-shaped cross-sectional area.
References Cited (Backward Citations)
US2997627A
Cited
US3493818A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |