US3790808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power take-off switch
Assignee: BEL Tronics Ltd
•
Filing: 1973-05-02
•
Granted: 1974-02-05
•
Expires: 1993-05-02
Abstract
Abstract A power take-off and switching device for use in a circuit of an internal combustion engine which includes a source of low voltage direct current, voltage regulator means, alternator means, and conductor means for connecting the source of low voltage current to the alternator by way of the voltage regulator in a conventional manner, said device comprising a normally closed first switch means in the power input circuit of an alternator, normally closed second switch means in the power output circuit of said alternator, power output receptacle means connected to the output of said alternator, supplementary conductor means for connecting said source of low voltage directly to the power input side of said alternator, normally open third switch means in said supplementary conductor means, actuator means for sequentially opening said first switch means to deactivate said alternator and thereafter opening said second switch means to disconnect the power output of the alternator from the low voltage source when the alternator is deactivated and thereafter closing said third switch means to supply low voltage power directly to said alternator such that when the alternator is driven a high voltage is supplied to said power output receptacle.
Inventors
- 👤 R Sagl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:15
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/14; H02J7/1438
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
200 words
A power take-off and switching device for use in a circuit of an internal combustion engine which includes a source of low voltage direct current, voltage regulator means, alternator means, and conductor means for connecting the source of low voltage current to the alternator by way of the voltage regulator in a conventional manner, said device comprising a. normally closed first switch means in the power input circuit of an alternator, b. normally closed second switch means in the power output circuit of said alternator, c. power output receptacle means connected to the output of said alternator, d. supplementary conductor means for connecting said source of low voltage directly to the power input side of said alternator, e. normally open third switch means in said supplementary conductor means, f. actuator means for sequentially opening said first switch means to deactivate said alternator and thereafter opening said second switch means to disconnect the power output of the alternator from the low voltage source when the alternator is deactivated and thereafter closing said third switch means to supply low voltage power directly to said alternator such that when the alternator is driven a high voltage is supplied to said power output receptacle.
Claim 2
Dependent Claim
200 words
A power take-off and switching device for use in a circuit of an internal combustion engine which includes a source of low voltage direct current, voltage regulator means, alternator means, and conductor means for connecting the source of low voltage current to the alternator by way of the voltage regulator in a conventional manner, said device comprising a. normally closed first switch means in the power input circuit of an alternator, b. normally closed second switch means in the power output circuit of said alternator, c. power output receptacle means connected to the output of said alternator, d. supplementary conductor means for connecting said source of low voltage directly to the power input side of said alternator, e. normally open third switch means in said supplementary conductor means, f. actuator means for sequentially opening said first switch means to deactivate said alternator and thereafter opening said second switch means to disconnect the power output of the alternator from the low voltage source when the alternator is deactivated and thereafter closing said third switch means to supply low voltage power directly to said alternator such that when the alternator is driven a high voltage is supplied to said power output receptacle.
Claim 3
Dependent Claim
44 words
A device as claimed in claim 1 wherein said power output receptacle is connected in parallel with said second switch means such that when the receptacle is connected to the internal resistance of an appliance, the source of low voltage direct current is recharged.
Claim 4
Dependent Claim
21 words
A device as claimed in claim 1 including a second power output receptacle connected in parallel with said first mentioned receptacle.
Claim 5
Dependent Claim
44 words
A device as claimed in claim 1 wherein said first, second and third switch means and said actuator means are incorporated in a single rotary switch whereby the sequential operation of the switching means is controlled by rotation of the rotor of the switch.
Claim 6
Dependent Claim
167 words
A power output device for use in an electrical circuit of an internal combustion engine which includes a source of low voltage direct current, voltage regulator means, alternator means and conductor means for connecting the source of low voltage current to the alternator by way of the voltage regulator, said device including, a. unitary rotary switching device having normally closed first switch contact means connectible in the power input circuit of the alternator, b. normally closed second switch contact means connectible in the power output circuit of the alternator, c. normally open third switch contact means, d. conductor means for connecting said third switch contact means to said source of low voltage direct current and said power input side of the alternator, e. unitary actuator means for sequentially opening said first contact means and thereafter opening said second switch contact means while said first switch contact means remains open and thereafter closing said third switch contact means while said first and second switch contact means remain open.
Claim 7
Dependent Claim
167 words
A power output device for use in an electrical circuit of an internal combustion engine which includes a source of low voltage direct current, voltage regulator means, alternator means and conductor means for connecting the source of low voltage current to the alternator by way of the voltage regulator, said device including, a. unitary rotary switching device having normally closed first switch contact means connectible in the power input circuit of the alternator, b. normally closed second switch contact means connectible in the power output circuit of the alternator, c. normally open third switch contact means, d. conductor means for connecting said third switch contact means to said source of low voltage direct current and said power input side of the alternator, e. unitary actuator means for sequentially opening said first contact means and thereafter opening said second switch contact means while said first switch contact means remains open and thereafter closing said third switch contact means while said first and second switch contact means remain open.
Claim 8
Dependent Claim
90 words
A power take-off device as claimed in claim 5 having power output receptacle means, one terminal of which is connected to the battery power output terminal of the alternator and the other terminal of which is connected to the battery terminal, said power output receptacle means being connected in parallel with said second switch means such that when said second switch means is closed, a 12-volt output is available at said receptacle and when said second switch means is open, a 110-volt output is available at said power output receptacle.
References Cited (Backward Citations)
US3456119A
Cited
US3497709A
Cited
US3586868A
Cited
US3660671A
Cited
US3668514A
Cited
US3655991A
Cited
US3681611A
Cited
US3676694A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |