US3295025A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Movable barrier serving as shutter means and enclosure door in switchgear housing
Assignee: Allis Chalmers Corp
•
Filing: 1964-12-31
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Granted: 1966-12-27
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Expires: 1984-12-31
Abstract
No abstract record available.
Inventors
- 👤 John O Tjebben
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:06
CPC Classifications
H; H02; H02B; H02B11/00; H02B11/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
AN ENCLOSURE HAVING A ACCESS OPENING FOR RECEIVING AN ELECTRICAL APPARATUS HAVING A CONNECTOR, SAID ENCLOSURE COMPRISING: A HIGH VOLTAGE CONTACT LOCATED TO CONTACT THE CONNECTOR UPON INSERTION OF THE ELECTRICAL APPARATUS INTO THE ENCLOSURE A FIRST PREDETERMINED DISTANCE, MOVABLE BARRIER MEANS FOR UNCOVERING THE ACCESS OPENING AND ISOLATING THE HIGH VOLTAGE CONTACTS IN A COMPARTMENT WHEN IN ONE POSITION AND FOR COVERING THE ACCESS OPENING AND EXPOSING THE HIGH VOLTAGE CONTACTS FOR RECEIVING THE CONNECTORS WHEN IN ANOTHER POSITION;
Claim 2
Dependent Claim
80 words
AN ENCLOSURE HAVING A ACCESS OPENING FOR RECEIVING AN ELECTRICAL APPARATUS HAVING A CONNECTOR, SAID ENCLOSURE COMPRISING: A HIGH VOLTAGE CONTACT LOCATED TO CONTACT THE CONNECTOR UPON INSERTION OF THE ELECTRICAL APPARATUS INTO THE ENCLOSURE A FIRST PREDETERMINED DISTANCE, MOVABLE BARRIER MEANS FOR UNCOVERING THE ACCESS OPENING AND ISOLATING THE HIGH VOLTAGE CONTACTS IN A COMPARTMENT WHEN IN ONE POSITION AND FOR COVERING THE ACCESS OPENING AND EXPOSING THE HIGH VOLTAGE CONTACTS FOR RECEIVING THE CONNECTORS WHEN IN ANOTHER POSITION;
References Cited (Backward Citations)
US2790112A
Cited
US3002129A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |