US3586868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Zero current transfer device
Assignee: GENIE POWER PRODUCTS Ltd
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Filing: 1969-05-26
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Granted: 1971-06-22
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Expires: 1989-05-26
Abstract
Abstract A circuit for automotive engines and the like having an alternator which can be used to power direct current devices of voltages higher than 12 volts such as 110 volts, directly from the alternator and having circuitry whereby when the load is applied or removed, the transfer of the output of the alternator is made from the battery to the load and vice versa at zero current in order to protect the contact points and for safety.
Inventors
- 👤 Henry Epp
- 👤 David Martens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:38
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/14; H02J7/1438; H02M; H02M1/00; H02M1/08; H02M1/083
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
124 words
A load-operated voltage-switching device for use with an alternator, battery and regulator combination on automotive engines and the like comprising in combination first relay means operated by the connection or disconnection of said load with said battery, second relay means operated by said first relay means to disconnect or connect the regulator from the field of said alternator whereby the alternator output is reduced to zero, third relay means also operated by said first relay means to switch the output of said alternator from said battery to said load and vice versa, and time delay relay means also operated by said first relay means after said third relay means has operated, to connect or disconnect said battery to the field coil of said alternator.
Claim 2
Dependent Claim
124 words
A load-operated voltage-switching device for use with an alternator, battery and regulator combination on automotive engines and the like comprising in combination first relay means operated by the connection or disconnection of said load with said battery, second relay means operated by said first relay means to disconnect or connect the regulator from the field of said alternator whereby the alternator output is reduced to zero, third relay means also operated by said first relay means to switch the output of said alternator from said battery to said load and vice versa, and time delay relay means also operated by said first relay means after said third relay means has operated, to connect or disconnect said battery to the field coil of said alternator.
Claim 3
Dependent Claim
104 words
A load-operated voltage-switching device for use with alternator, battery and regulator combinations on automotive engines and the like characterized by the provision of a sensor relay operated by connecting a load between said relay and said battery, first means operated by said sensor relay to break the field coil circuit between the regulator and said alternator thereby reducing the alternator output to zero, second means operated by said sensor relay to change the output current and said alternator from said battery to said load and third means also operated by said sensor relay to connect said battery to said field coil of said alternator.
Claim 4
Dependent Claim
104 words
A load-operated voltage-switching device for use with alternator, battery and regulator combinations on automotive engines and the like characterized by the provision of a sensor relay operated by connecting a load between said relay and said battery, first means operated by said sensor relay to break the field coil circuit between the regulator and said alternator thereby reducing the alternator output to zero, second means operated by said sensor relay to change the output current and said alternator from said battery to said load and third means also operated by said sensor relay to connect said battery to said field coil of said alternator.
Claim 5
Dependent Claim
28 words
The device according to claim 2 in which said third means includes means for delaying the operation of said third means until after said second means has operated.
Claim 6
Dependent Claim
55 words
The device according to claim 2 in which said first means takes the form of a first relay operatively connected to said sensor relay, and contact points operated by said first relay to break the circuit between said alternator field coils and said regulator, said contact points normally being closed when said load is disconnected.
Claim 7
Dependent Claim
55 words
The device according to claim 3 in which said first means takes the form of a first relay operatively connected to said sensor relay, and contact points operated by said first relay to break the circuit between said alternator field coils and said regulator, said contact points normally being closed when said load is disconnected.
Claim 8
Dependent Claim
52 words
The device according to claim 2 in which said second means takes the form of a second relay operatively connected via said first relay to said sensor relay, and contact points operated by said second relay to switch the output of said alternator from said battery to said load and vice versa.
Claim 9
Dependent Claim
52 words
The device according to claim 3 in which said second means takes the form of a second relay operatively connected via said first relay to said sensor relay, and contact points operated by said second relay to switch the output of said alternator from said battery to said load and vice versa.
Claim 10
Dependent Claim
52 words
The device according to claim 4 in which said second means takes the form of a second relay operatively connected via said first relay to said sensor relay, and contact points operated by said second relay to switch the output of said alternator from said battery to said load and vice versa.
Claim 11
Dependent Claim
52 words
The device according to claim 5 in which said second means takes the form of a second relay operatively connected via said first relay to said sensor relay, and contact points operated by said second relay to switch the output of said alternator from said battery to said load and vice versa.
Claim 12
Dependent Claim
109 words
The device according to claim 3 in which said third means comprises a third relay operatively connected to said sensor relay via said first relay, a condenser across the coil of said third relay to delay the energizing thereof, contact points operated by said third relay of disconnect the regulator from the field coil of the alternator and to connect the battery to said field coil after said second relay has been energized, said sensor relay including a holding coil in series between said alternator output and said load to hold said sensor relay and hence said first, second and third relay in circuit while said load is connected.
Claim 13
Dependent Claim
109 words
The device according to claim 4 in which said third means comprises a third relay operatively connected to said sensor relay via said first relay, a condenser across the coil of said third relay to delay the energizing thereof, contact points operated by said third relay to disconnect the regulator from the field coil of the alternator and to connect the battery to said field coil after said second relay has been energized, said sensor relay including a holding coil in series between said alternator output and said load to hold said sensor relay and hence said first, second and third relay in circuit while said load is connected.
Claim 14
Dependent Claim
109 words
The device according to claim 5 in which said third means comprises a third relay operatively connected to said sensor relay via said first relay, a condenser across the coil of said third relay to delay the energizing thereof, contact points operated by said third relay to disconnect the regulator from the field coil of the alternator and to connect the battery to said field coil after said second relay has been energized, said sensor relay including a holding coil in series between said alternator output and said load to hold said sensor relay and hence said first, second and third relay in circuit while said load is connected.
Claim 15
Dependent Claim
109 words
The device according to claim 6 in which said third means comprises a third relay operatively connected to said sensor relay via said first relay, a condenser across the coil of said third relay to delay the energizing thereof, contact points operated by said third relay to disconnect the regulator from the field coil of the alternator and to connect the battery to said field coil after said second relay has been energized, said sensor relay including a holding coil in series between said alternator output and said load to hold said sensor relay and hence said first, second and third relay in circuit while said load is connected.
Claim 16
Dependent Claim
109 words
The device according to claim 7 in which said third means comprises a third relay operatively connected to said sensor reLay via said first relay, a condenser across the coil of said third relay to delay the energizing thereof, contact points operated by said third relay to disconnect the regulator from the field coil of the alternator and to connect the battery to said field coil after said second relay has been energized, said sensor relay including a holding coil in series between said alternator output and said load to hold said sensor relay and hence said first, second and third relay in circuit while said load is connected.
Claim 17
Dependent Claim
110 words
The device a according to claim 8 in which said third means comprises a third relay operatively connected to said sensor relay via said first relay, a condenser across the coil of said third relay to delay the energizing thereof, contact points operated by said third relay to disconnect the regulator from the field coil of the alternator and to connect the battery to said field coil after said second relay has been energized, said sensor relay including a holding coil in series between said alternator output and said load to hold said sensor relay and hence said first, second and third relay in circuit while said load is connected.
Claim 18
Dependent Claim
109 words
The device according to claim 9 in which said third means comprises a third relay operatively connected to said sensor relay via said first relay, a condenser across the coil of said third relay to delay the energizing thereof, contact points operated by said third relay to disconnect the regulator from the field coil of the alternator and to connect the battery to said field coil after said second relay has been energized, said sensor relay including a holding coil in series between said alternator output and said load to hold said sensor relay and hence said first, second and third relay in circuit while said load is connected.
Claim 19
Dependent Claim
36 words
The device according to claim 10 which includes reversibly biassed diode means between said battery and said sensor coil to prevent the output of said alternator when said load is connected, from passing to said battery.
Claim 20
Dependent Claim
36 words
The device according to claim 11 which includes reversibly biassed diode means between said battery and said sensor coil to prevent the output of said alternator when said load is connected, from passing to said battery.
Claim 21
Dependent Claim
36 words
The device according to claim 12 which includes reversibly biassed diode means between said battery and said sensor coil to prevent the output of said alternator when said load is connected, from passing to said battery.
Claim 22
Dependent Claim
36 words
The device according to claim 13 which includes reversibly biased diode means between said battery and said sensor coil to prevent the output of said alternator when said load is connected, from passing to said battery.
Claim 23
Dependent Claim
36 words
The device according to claim 14 which includes reversibly biassed diode means between said battery and said sensor coil to prevent the output of said alternator when said load is connected, from passing to said battery.
Claim 24
Dependent Claim
35 words
The device according to claim 15 which includes reversibly biassed diode means between said battery and said sensor coil to prevent the output of said when said load is connected, from passing to said battery.
Claim 25
Dependent Claim
36 words
The device according to claim 16 which includes reversibly biassed diode means between said battery and said sensor coil to prevent the output of said alternator when said load is connected, from passing to said battery.
Claim 26
Dependent Claim
66 words
A zero current transfer device for use with alternator, battery and regulator combination used in automotive engines and the like, comprising in combination of plurality of electric relays and means to operate said relays sequentially when a load is connected of disconnected to said device whereby the switching of the alternator current from the battery to the load and vice versa takes place at zero current.
Claim 27
Dependent Claim
66 words
A zero current transfer device for use with alternator, battery and regulator combination used in automotive engines and the like, comprising in combination of plurality of electric relays and means to operate said relays sequentially when a load is connected of disconnected to said device whereby the switching of the alternator current from the battery to the load and vice versa takes place at zero current.
Claim 28
Dependent Claim
94 words
The device according to claim 24 in which said means includes a sensor relay operated by the connection of said load between said relay and said battery, first means operated by said sensor relay to break the field coil circuit Between said regulator and said alternator thereby reducing the alternator output to zero, second means operated by said sensor relay to change the output circuit of said alternator from said battery to said load and third means also operated by said sensor relay to connect said battery to said field coil of said alternator.
Claim 29
Dependent Claim
28 words
The device according to claim 25 in which said third means includes means for delaying the operation of said third means until after said second means has operated.
Claim 30
Dependent Claim
55 words
The device according to claim 25 in which said first means takes the form of a first relay operatively connected to said sensor relay, and contact points operated by said first relay to break the circuit between said alternator field coils and said regulator, said contact points normally being closed when said load is discontinued.
Claim 31
Dependent Claim
55 words
The device according to claim 26 in which said first means takes the form of a first relay operatively connected to said sensor relay, and contact points operated by said first relay to break the circuit between said alternator field coils and said regulator, said contacts points normally being closed when said load is disconnected.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |