Patent US4338600A successfully refreshed from Google Patents.
Patent US3770976A successfully refreshed from Google Patents.
US3770976A
Expired / Lapsed
US
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System for increasing the output of a multi-phase rectified rotary field system
Assignee: SouthTrust Bank
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Filing: 1972-08-24
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Granted: 1973-11-06
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Expires: 1992-08-24
Abstract
Abstract The specification discloses a system adapted to be coupled to the alternator-rectifier system of a motor vehicle and including feedback means for employing the output of the alternatorrectifier system for self-exciting the rotary field thereof when current is drawn from the output by a welding unit or other type of load. A DC power supply is employed normally to excite the rotary field during no-load conditions. The output of the DC power supply to the rotary field is terminated when the load draws current from the output of the alternator-rectifier system.
Inventors
- 👤 L Stroud
- 👤 J Everett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:33
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/14; H02J7/1438; B; B23; B23K; B23K9/00; B23K9/10; B23K9/1006; B23K9/1012
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
116 words
A system adapted to be coupled to a multi-phase rectified rotary field system to increase the power and current through regenerative feedback, comprising: a DC power supply for normally exciting the rotary field of said multi-phase system, output means coupled to the output of said multi-phase system for applying power to a load upon demand, means responsive to current flow from the output of said multiphase system to a load for coupling the output of the multiphase system to its rotary field to self-excite the multi-phase system, and means for electrically disconnecting the output of said DC power supply from said rotary field when the output of said multiphase system is applied to said rotary field.
Claim 2
Independent Claim
116 words
A system adapted to be coupled to a multi-phase rectified rotary field system to increase the power and current through regenerative feedback, comprising: a DC power supply for normally exciting the rotary field of said multi-phase system, output means coupled to the output of said multi-phase system for applying power to a load upon demand, means responsive to current flow from the output of said multiphase system to a load for coupling the output of the multiphase system to its rotary field to self-excite the multi-phase system, and means for electrically disconnecting the output of said DC power supply from said rotary field when the output of said multiphase system is applied to said rotary field.
Claim 3
Independent Claim
142 words
A system adapted to be coupled to a multi-phase rectified rotary field system to increase the power an current through regenerative feedback, a DC power supply for normally exciting the rotary field of said multi-phase system, output means coupled to the output of said multi-phase system for applying power to a load upon demand, feedback circuitry including normally open switch means, coupled from the output of said multi-phase system to the input of said rotary field, control means responsive to current flow from the output of said multi-phase system to a load for closing said switch means for applying the output of said multi-phase system to its rotary field to self-excite the multi-phase system, and means for blocking the output of said DC power supply to said rotary field when the output of said multi-phase system is applied to said rotary field.
Claim 4
Independent Claim
142 words
A system adapted to be coupled to a multi-phase rectified rotary field system to increase the power an current through regenerative feedback, a DC power supply for normally exciting the rotary field of said multi-phase system, output means coupled to the output of said multi-phase system for applying power to a load upon demand, feedback circuitry including normally open switch means, coupled from the output of said multi-phase system to the input of said rotary field, control means responsive to current flow from the output of said multi-phase system to a load for closing said switch means for applying the output of said multi-phase system to its rotary field to self-excite the multi-phase system, and means for blocking the output of said DC power supply to said rotary field when the output of said multi-phase system is applied to said rotary field.
Claim 5
Dependent Claim
67 words
The system of claim 2 comprising: DC power supply circuitry coupled from said DC power supply to said feedback circuitry for normally applying the output of said DC power supply to said rotary field, said DC power supply circuitry includes said means for blocking the output of said DC power supply when the output of said multi-phase system is applied to the input of said rotary field.
Claim 6
Dependent Claim
31 words
The system of claim 3 comprising means coupled in said feedback circuitry for blocking current flow from the output of said DC power supply to the output of the multi-phase system.
Claim 7
Dependent Claim
33 words
The system of claim 4 comprising filter means for filtering the output of the multi-phase system applied to the input of Said rotary field and for lowering inductive reactance of the rotary field.
Claim 8
Dependent Claim
86 words
The system of claim 3 wherein said control means comprises: a first relay coil coupled to the output of said multi-phase system for closing normally open contact means when power is applied to the load, circuitry coupled from the output of said DC power supply to one of said normally open contact means by way of a second relay coil for closing said switch means in said feedback circuitry when said normally open contact means of said control means are closed by said first relay coil.
Claim 9
Independent Claim
337 words
A system to be coupled to the electrical system of a motor vehicle having a DC power supply, a regulator, and an alternator-rectifier system employed normally to charge the DC power supply and whose rotary field is driven by the vehicle engine, said regulator being normally connected to the rotary field of said alternator-rectifier system such that the rotary field is normally excited by the DC power supply by way of the regulator, the output of said alternator-rectifier system normally being connected to the input of said regulator and to said DC power supply, said system comprising: output means to be coupled to the output of the alternator-rectifier system for applying power to a work load upon demand, feedback circuitry including normally open switch means coupled from the output of the alternator-rectifier system and adapted to be coupled to the rotary field, means for disconnecting the regulator from the rotary field of said alternator-rectifier system and for connecting said feedback circuitry to said rotary field, control circuitry to be connected to the output of the DC power supply and to normally open relay contacts by way of a relay coil for controlling said switch means in said feedback circuitry, DC power supply circuitry coupled from said DC power supply to said feedback circuitry, means for disconnecting the DC power supply from the output of said alternator-rectifier system and for connecting the DC power supply to said control circuitry and to said DC power supply circuitry, means coupled to the output of said alternator-rectifier system for closing said relay contacts in response to a load demand for energizing said relay coil in said control circuitry for closing said switch means in said feedback circuitry for completing a circuit from the output of said alternator-rectifier system to said rotary field by way of said feedback circuitry, said DC power supply circuitry including means for blocking the output of said DC power supply to said rotary field when the output of said alternator-rectifier system is applied to said rotary field.
Claim 10
Independent Claim
337 words
A system to be coupled to the electrical system of a motor vehicle having a DC power supply, a regulator, and an alternator-rectifier system employed normally to charge the DC power supply and whose rotary field is driven by the vehicle engine, said regulator being normally connected to the rotary field of said alternator-rectifier system such that the rotary field is normally excited by the DC power supply by way of the regulator, the output of said alternator-rectifier system normally being connected to the input of said regulator and to said DC power supply, said system comprising: output means to be coupled to the output of the alternator-rectifier system for applying power to a work load upon demand, feedback circuitry including normally open switch means coupled from the output of the alternator-rectifier system and adapted to be coupled to the rotary field, means for disconnecting the regulator from the rotary field of said alternator-rectifier system and for connecting said feedback circuitry to said rotary field, control circuitry to be connected to the output of the DC power supply and to normally open relay contacts by way of a relay coil for controlling said switch means in said feedback circuitry, DC power supply circuitry coupled from said DC power supply to said feedback circuitry, means for disconnecting the DC power supply from the output of said alternator-rectifier system and for connecting the DC power supply to said control circuitry and to said DC power supply circuitry, means coupled to the output of said alternator-rectifier system for closing said relay contacts in response to a load demand for energizing said relay coil in said control circuitry for closing said switch means in said feedback circuitry for completing a circuit from the output of said alternator-rectifier system to said rotary field by way of said feedback circuitry, said DC power supply circuitry including means for blocking the output of said DC power supply to said rotary field when the output of said alternator-rectifier system is applied to said rotary field.
Claim 11
Dependent Claim
82 words
The system of claim 2 wherein said multi-phase rectified rotary field system includes a multi-phase stator winding having a plurality of phase windings, a rotary coil to be electrically excited and rotated in the vicinity of said phase windings, and two rectifiers coupled to each of said phase windings, capacitor means coupled to the junction between the two rectifiers of one of said phase windings and adapted to be grounded for increasing the output voltage of said multi-phase rectified rotary field system.
Claim 12
Independent Claim
129 words
A system adapted to be coupled to a multi-phase rectified rotary field system to increase the electrical output voltage thereof, said multi-phase rectified rotary field system includes a multi-phase stator winding having a plurality of phase windings, a rotary coil to be electrically excited and rotated in the vicinity of said phase windings, and two rectifiers coupled to each of said phase windings, said system comprising: a DC power supply for exciting the rotary field of said multi-phase system, output means coupled to the output of said multi-phase system for applying power to a load, and capacitor means coupled to the junction between the two rectifiers of one of said phase windings and adapted to be grounded for increasing the output voltage Of said multi-phase rectified rotary field system.
Claim 13
Independent Claim
129 words
A system adapted to be coupled to a multi-phase rectified rotary field system to increase the electrical output voltage thereof, said multi-phase rectified rotary field system includes a multi-phase stator winding having a plurality of phase windings, a rotary coil to be electrically excited and rotated in the vicinity of said phase windings, and two rectifiers coupled to each of said phase windings, said system comprising: a DC power supply for exciting the rotary field of said multi-phase system, output means coupled to the output of said multi-phase system for applying power to a load, and capacitor means coupled to the junction between the two rectifiers of one of said phase windings and adapted to be grounded for increasing the output voltage Of said multi-phase rectified rotary field system.
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) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |