US3721942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lock plate for high voltage bushings with removable connectors
Assignee: General Electric Co
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Filing: 1971-12-03
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Granted: 1973-03-20
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Expires: 1991-12-03
Abstract
Abstract A high voltage bushing for electrical apparatus, such as transformers. The bushing is hollow and has provisions for receiving either a fuse connector or a solid connector. A lock plate is provided which mounts on the terminal plate of the bushing and prevents withdrawal of the connector while the lock plate is attached to the terminal plate. The lock plate is provided with an eyebolt connector for attaching to the terminal plate. Slots are also provided in the lock plate or connecting one or more high voltage cable leads thereto.
Inventors
- 👤 G Conway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:50
CPC Classifications
H; H01; H01H; H01H85/00; H01H85/54; H01B; H01B17/00; H01B17/26; H01F; H01F27/00; H01F27/02; H01F27/04; H01F27/40; H01F27/402
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
67 words
A lock plate for a high voltage bushing having a terminal plate and a removable connector, said lock plate comprising a Zshaped member, one end of said member forming a lock mEans for engaging said removable connector, the other end of said member having means to secure at least one high voltage lead thereto and also including means to secure said lock plate to said terminal plate.
Claim 2
Dependent Claim
67 words
A lock plate for a high voltage bushing having a terminal plate and a removable connector, said lock plate comprising a Zshaped member, one end of said member forming a lock mEans for engaging said removable connector, the other end of said member having means to secure at least one high voltage lead thereto and also including means to secure said lock plate to said terminal plate.
Claim 3
Dependent Claim
27 words
A lock plate as set forth in claim 1 in which slots are provided in said other end of said member for securing high voltage leads thereto.
Claim 4
Dependent Claim
38 words
A lock plate as set forth in claim 2 in which an opening is provided through said other end of said member and an eyebolt connector extends through said opening securing said lock plate to said terminal plate.
Claim 5
Dependent Claim
38 words
A lock plate as set forth in claim 1 in which an opening is provided through said other end of said member and an eyebolt connector extends through said opening securing said lock plate to said terminal plate.
Claim 6
Dependent Claim
183 words
A high voltage bushing, including a hollow insulator member, means for securing said insulator member to the enclosure of an electrical apparatus with one portion of said insulator member extending into the enclosure, a first contact in said one portion with a threaded part of said first contact internal of said hollow insulator member, a second contact in the form of a terminal plate secured to the exterior end of said insulator, an opening in said terminal plate, a removable connector extending through said opening into said hollow insulator and having a threaded end threadedly engaging said threaded part of said first contact, said removable connector having a cap portion engaging said terminal plate when said threaded end is secured in said threaded part, and a lock plate to prevent removal of said removable connector, said lock plate comprising a Z-shaped member, one part of said Z-shaped member engaging said cap portion of said removable connector, the other part of said Z-shaped member removably secured to said terminal plate, said other part having means to secure at least one high voltage lead thereto.
Claim 7
Dependent Claim
183 words
A high voltage bushing, including a hollow insulator member, means for securing said insulator member to the enclosure of an electrical apparatus with one portion of said insulator member extending into the enclosure, a first contact in said one portion with a threaded part of said first contact internal of said hollow insulator member, a second contact in the form of a terminal plate secured to the exterior end of said insulator, an opening in said terminal plate, a removable connector extending through said opening into said hollow insulator and having a threaded end threadedly engaging said threaded part of said first contact, said removable connector having a cap portion engaging said terminal plate when said threaded end is secured in said threaded part, and a lock plate to prevent removal of said removable connector, said lock plate comprising a Z-shaped member, one part of said Z-shaped member engaging said cap portion of said removable connector, the other part of said Z-shaped member removably secured to said terminal plate, said other part having means to secure at least one high voltage lead thereto.
Claim 8
Dependent Claim
28 words
A high voltage bushing as claimed in claim 5 in which slots are provided in said other part of said Z-shaped member for securing high voltage leads thereto.
Claim 9
Dependent Claim
39 words
A high voltage bushing as claimed in claim 6 in which an opening is provided through said other part of said Z-shaped member and an eyebolt connector extends through said opening securing said lock plate to said terminal plate.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-19 | 1976-09-18 | 1977-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-19 | 1980-09-18 | 1981-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-19 | 1984-09-18 | 1985-03-20 | $7700.00 | Window Closed / Lapsed |