US4214291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Explosion-proof switchgear apparatus
Assignee: Individual
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Filing: 1978-12-27
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Granted: 1980-07-22
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Expires: 1998-12-27
Abstract
Abstract An explosion-proof switchgear apparatus comprises an enclosure housing a carriage mounted on a guide and coupled by a pivot pin to a chassis which accommodates electric devices and the movable part of a separable contact system whose fixed part is secured to the enclosure for interaction with the movable part. The apparatus includes a coupling unit mounted on the pivot pin and it is secured to the chassis whose opposite end has a vertical slot. The apparatus is also provided with a guiding retainer means installed at the same enclosure portion, where the fixed part of the separable contact system is mounted, and received into the vertical slot.
Inventors
- 👤 Vitaly I. Koshman
- 👤 Mikhail A. Nagorny
- 👤 Vladimir F. Petrichenko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:11
CPC Classifications
H; H02; H02B; H02B1/00; H02B1/26; H02B1/28; H02B11/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
161 words
An explosion-proof switchgear apparatus comprising: an enclosure with a guide; a carriage mounted within the enclosure for travel along said guide; a pivot pin whereon said carriage is mounted; a separable contact system including: a movable part and a fixed part, said fixed part of said separable contact system being mounted within said enclosure on the side opposite to said guide; electric devices; a chassis to accommodate said electric devices, having a vertical slot; said movable part of said separable contact system, mounted on said chassis at the side thereof whereon said vertical slot is located; a guiding retainer means received into said vertical slot of said chassis; said guiding retainer means secured to the same side of said enclosure, whereon said fixed part of said separable contact system is arranged; and a coupling unit mounted on said pivot pin and secured to said chassis in the side thereof which is reverse to the side whereon said vertical slot is located.
Claim 2
Dependent Claim
161 words
An explosion-proof switchgear apparatus comprising: an enclosure with a guide; a carriage mounted within the enclosure for travel along said guide; a pivot pin whereon said carriage is mounted; a separable contact system including: a movable part and a fixed part, said fixed part of said separable contact system being mounted within said enclosure on the side opposite to said guide; electric devices; a chassis to accommodate said electric devices, having a vertical slot; said movable part of said separable contact system, mounted on said chassis at the side thereof whereon said vertical slot is located; a guiding retainer means received into said vertical slot of said chassis; said guiding retainer means secured to the same side of said enclosure, whereon said fixed part of said separable contact system is arranged; and a coupling unit mounted on said pivot pin and secured to said chassis in the side thereof which is reverse to the side whereon said vertical slot is located.
Claim 3
Dependent Claim
43 words
An explosion-proof switchgear apparatus according to claim 1, wherein: said coupling unit having: a threaded cylinder and a coupling nut; said coupling nut threadingly engaging said threaded cylinder and mounted on said pivot pin; and said threaded cylinder being secured to said chassis.
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) | 1983-07-22 | 1984-01-21 | 1984-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-22 | 1988-01-21 | 1988-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-22 | 1992-01-21 | 1992-07-22 | $7700.00 | Window Closed / Lapsed |