US4088940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for cutting out loads in a generator and battery fed plant
Assignee: Societa Italiana Vetro SIV SpA
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Filing: 1975-05-14
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Granted: 1978-05-09
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Expires: 1995-05-14
Abstract
Abstract A device for cutting out non-essential loads in a generator and battery-fed electric plant includes a voltage detecting unit connected across the terminals of the battery. The detecting unit may be a relay. Whenever the voltage at the terminals falls below a predetermined level, the detecting unit effects the disconnection of the non-essential loads from the terminals of the battery and generator.
Inventors
- 👤 Giorgio Ciarniello
- 👤 Oscar De Lena
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:02
CPC Classifications
H; H02; H02H; H02H3/00; H02H3/02; H02H3/033; H02J; H02J3/00; H02J3/12; H02J3/14; H02J7/00; H02J7/14; H02J7/1438; H02J9/00; H02J9/002; H02J2105/00; H02J2105/50; H02J2105/52; Y; Y02; Y02B; Y02B70/00; Y02B70/30; Y02B70/3225; Y04; Y04S; Y04S20/00; Y04S20/20; Y04S20/222
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
88 words
In a generator and battery fed electric plant which includes, in addition to a circuit of essential loads, also a circuit of non-essential loads, and a device having a warning lamp in circuit for signaling when output of generator is insufficient, the improvement comprising a voltage responsive unit including solenoid of a relay fixedly connected in parallel with said warning lamp and having a pair of normally closed contacts for opening said circuit of non-essential loads whenever current flows in said solenoid and said normally closed contacts open.
Claim 2
Dependent Claim
88 words
In a generator and battery fed electric plant which includes, in addition to a circuit of essential loads, also a circuit of non-essential loads, and a device having a warning lamp in circuit for signaling when output of generator is insufficient, the improvement comprising a voltage responsive unit including solenoid of a relay fixedly connected in parallel with said warning lamp and having a pair of normally closed contacts for opening said circuit of non-essential loads whenever current flows in said solenoid and said normally closed contacts open.
Claim 3
Dependent Claim
22 words
A device according to claim 1, wherein said voltage responsive unit is connected in parallel with the circuit of the non-essential loads.
References Cited (Backward Citations)
US3321754A
Cited
US3474296A
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US3522481A
Cited
US3656135A
Cited
US3656045A
Cited
US3868559A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-08 | 1981-11-07 | 1982-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-08 | 1985-11-07 | 1986-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-08 | 1989-11-07 | 1990-05-09 | $7700.00 | Window Closed / Lapsed |