US3792315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal enclosed switchgear with sandwiched load block supports
Assignee: Westinghouse Electric Corp
•
Filing: 1973-03-01
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Granted: 1974-02-12
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Expires: 1993-03-01
Abstract
Abstract Each section of a three-phase metal enclosed switchgear unit or assembly is provided with main through horizontal bus conductors and vertical risers or section bus. The front portion of each switchgear section is divided into a plurality of stacked enclosures in which single or dual circuit breakers can be mounted. A sandwiched load side support assembly using two identical load block supports is provided for positioning and bracing load side connectors extending from dual mounted circuit breakers.
Inventors
- 👤 J Salvati
- 👤 L Ricci
- 👤 D Colista
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:31
CPC Classifications
H; H02; H02B; H02B1/00; H02B1/20; H02B1/21
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
180 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 bar conductors to its associated vertical riser; a plurality of enclosure means formed at the front of said section structure; a pair of circuit interrupters mounted in one of said enclosure means in a side-by-side relationship with each circuit interrupter being electrically connected to each of said vertical risers; a plurality of load side electrically conducting extensions extending from the load terminals of said pair of side-by-side circuit interrupters; and a load side extension support means for rigidly positioning said plurality of load side extensions, said load side extension support means comprising, a pair of support blocks, between which a portion of said load side extensions pass, being faStened together so as to engage and support said load side extensions.
Claim 2
Dependent Claim
180 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 bar conductors to its associated vertical riser; a plurality of enclosure means formed at the front of said section structure; a pair of circuit interrupters mounted in one of said enclosure means in a side-by-side relationship with each circuit interrupter being electrically connected to each of said vertical risers; a plurality of load side electrically conducting extensions extending from the load terminals of said pair of side-by-side circuit interrupters; and a load side extension support means for rigidly positioning said plurality of load side extensions, said load side extension support means comprising, a pair of support blocks, between which a portion of said load side extensions pass, being faStened together so as to engage and support said load side extensions.
Claim 3
Dependent Claim
27 words
A metal enclosed switchgear unit as claimed in claim 1 wherein: said load side extension support means comprises a pair of support blocks substantially identical in shape.
Claim 4
Dependent Claim
89 words
A metal enclosed switchgear unit as claimed in claim 2, wherein: said load side extension means comprise, a cylindrical conductor portion, and a generally elongated rectangular bus bar portion to which said cylindrical conductor portion is attached; each of said pair of support blocks having a generally rectangular pocket formed therein of a suitable size to receive a portion of said elongated rectangular bus bar; and said pair of load blocks disposed around and engaging a portion of said bus bar portion of each of said load side extensions.
Claim 5
Dependent Claim
48 words
A metal enclosed switchgear unit as claimed in claim 3 wherein each of said support blocks has a plurality of generally circular openings formed therethrough, and the cylindrical conductor portions of said load side extensions disposed to pass through the circular openings of one of said support blocks.
Claim 6
Dependent Claim
36 words
A metal enclosed switchgear unit as claimed in claim 2 wherein each of said support blocks has a slotted opening formed in each end thereof, to facilitate the securing of said blocks to said switchgear section.
Claim 7
Dependent Claim
70 words
A metal enclosed switchgear unit as claimed in claim 2, wherein: each of said support blocks has a slotted opening formed adjacent to the center thereof; said pair of support blocks being disposed so that a portion of the slotted openings in both of said support blocks overlap; and fastening means disposed through the slotted openings in both of said support blocks to hold said support blocks against relative movement.
References Cited (Backward Citations)
US3349291A
Cited
US3566194A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |