US3176187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety system for fluorescent lamp ballasts
Assignee: Basic Products Corp
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Filing: 1953-09-29
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Granted: 1965-03-30
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Expires: 1973-09-29
Abstract
No abstract record available.
Inventors
- 👤 Joseph G Sola
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:03
CPC Classifications
H; H05; H05B; H05B41/00; H05B41/14; H05B41/16; H05B41/20; H05B41/23; H05B41/232; H05B41/2325; H05B41/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
BALLAST MEANS FOR USE WITH FLUORESCENT LIGHTING TUBE MEANS AND A GROUNDED SOURCE A.C. POWER, SAID BALLAST MEANS COMPRISING A CIRCUIT INCLUDING A PRIMARY WINDING FOR CONNECTION TO SAID GROUNDED SOURCE, A CIRCUIT INCLUDING A SECONDARY WINDING FOR APPLYING A.C. VOLTAGE ACROSS SAID TUBE MEANS, SAID PRIMARY AND SECONDARY WINDINGS BEING COUPLED MAGNETICALLY BUT ISOLATED ELECTRICALLY, AND HIGH IMPEDANCE AUXILIARY CIRCUIT MEANS CONNECTED BETWEEN THE CIRCUIT OF SAID PRIMARY WINDING AND THE CIRCUIT OF SAID SECONDARY WINDING WHEREBY GROUNDING OF ANY POINT IN THE CIRCUIT OF SAID SECONDARY WINDING WILL COMPLETE A CIRCUIT THROUGH SAID PRIMARY WINDING CIRCUIT AND INCLUDING SAID AUXILIARY CIRCUIT MEANS, THE IMPEDANCE OF SAID AUXILIARY CIRCUIT MEANS BEING SUFFICIENT TO LIMIT THE CURRENT THERETHROUGH TO A VALUE LESS THAN THAT CREATING A SHOCK HAZARD.
Claim 2
Dependent Claim
128 words
BALLAST MEANS FOR USE WITH FLUORESCENT LIGHTING TUBE MEANS AND A GROUNDED SOURCE A.C. POWER, SAID BALLAST MEANS COMPRISING A CIRCUIT INCLUDING A PRIMARY WINDING FOR CONNECTION TO SAID GROUNDED SOURCE, A CIRCUIT INCLUDING A SECONDARY WINDING FOR APPLYING A.C. VOLTAGE ACROSS SAID TUBE MEANS, SAID PRIMARY AND SECONDARY WINDINGS BEING COUPLED MAGNETICALLY BUT ISOLATED ELECTRICALLY, AND HIGH IMPEDANCE AUXILIARY CIRCUIT MEANS CONNECTED BETWEEN THE CIRCUIT OF SAID PRIMARY WINDING AND THE CIRCUIT OF SAID SECONDARY WINDING WHEREBY GROUNDING OF ANY POINT IN THE CIRCUIT OF SAID SECONDARY WINDING WILL COMPLETE A CIRCUIT THROUGH SAID PRIMARY WINDING CIRCUIT AND INCLUDING SAID AUXILIARY CIRCUIT MEANS, THE IMPEDANCE OF SAID AUXILIARY CIRCUIT MEANS BEING SUFFICIENT TO LIMIT THE CURRENT THERETHROUGH TO A VALUE LESS THAN THAT CREATING A SHOCK HAZARD.
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) | 1968-03-29 | 1968-09-28 | 1969-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-29 | 1972-09-28 | 1973-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-29 | 1976-09-28 | 1977-03-30 | $7700.00 | Window Closed / Lapsed |