Patent US3889162A successfully refreshed from Google Patents.
US3889162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solenoid driving means
Assignee: LUCAS LEDEX Inc
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Filing: 1974-02-04
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Granted: 1975-06-10
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Expires: 1994-02-04
Abstract
Abstract Apparatus for sequentially energizing and maintaining a pulrality of solenoids in operated condition for a predetermined period of time includes electro-optical distributive means for sequentially applying triggering pulses circuits, a plurality of solenoid operating amplifiers, each of said circuits including two operational amplifiers, one of which is included in a circuit for providing a solenoid energizing pulse, and the other of which is included in a circuit for providing a solenoid holding pulse.
Inventors
- 👤 John L Myers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:01
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/18; H01F7/1805; F; F02; F02D; F02D41/00; F02D41/20; F02D41/30; F02D41/32; F02D41/36; F02D41/365; F02P; F02P7/00; F02P7/06; F02P7/073; F02D2041/2003; F02D2041/2017; F02D2041/202; F02D2041/2031
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
207 words
A solenoid driving circuit comprising, in combination, first operational amplifier means having an inverting input, a non-inverting input, an output, and feedback means connecting the output and the non-inverting input; input signal means connected to the non-inverting input of said first operational amplifier means and capable of applying an input signal thereto; means for connecting a source of threshold potential to the inverting input of said first operational amplifier means; second operational amplifier means having an inverting input, a non-inverting input, an output, and feedback means connecting the output and the non-inverting input; means for connecting a source of threshold potential to the noninverting input of said second operational amplifier means; signal transmitting means for applying a signal from the output of said first operational amplifier means to the inverting input of said second operational amplifier means, and including signal duration limiting means; high-voltage driver means connected to the output of said second operational amplifier means and responsive to a signal on said output to produce a high-voltage solenoid-energizing pulse; and low-voltage driver means connected to the output of said first operational amplifier means and responsive to a signal on said output to produce a low-voltage solenoid holding pulse following termination of the high voltage solenoid-energizing pulse.
Claim 2
Dependent Claim
207 words
A solenoid driving circuit comprising, in combination, first operational amplifier means having an inverting input, a non-inverting input, an output, and feedback means connecting the output and the non-inverting input; input signal means connected to the non-inverting input of said first operational amplifier means and capable of applying an input signal thereto; means for connecting a source of threshold potential to the inverting input of said first operational amplifier means; second operational amplifier means having an inverting input, a non-inverting input, an output, and feedback means connecting the output and the non-inverting input; means for connecting a source of threshold potential to the noninverting input of said second operational amplifier means; signal transmitting means for applying a signal from the output of said first operational amplifier means to the inverting input of said second operational amplifier means, and including signal duration limiting means; high-voltage driver means connected to the output of said second operational amplifier means and responsive to a signal on said output to produce a high-voltage solenoid-energizing pulse; and low-voltage driver means connected to the output of said first operational amplifier means and responsive to a signal on said output to produce a low-voltage solenoid holding pulse following termination of the high voltage solenoid-energizing pulse.
Claim 3
Dependent Claim
19 words
The solenoid driving circuit of claim 1 in which the signal duration limiting means includes capacitive and resistive elements.
Claim 4
Dependent Claim
34 words
The solenoid driving circuit of claim 1, also including fast reset means connected to the inverting input of said second operational amplifier means for enabling the rapid resetting of the signal duration limiting means.
Claim 5
Dependent Claim
18 words
The solenoid driving circuit of claim 3 in which the fast reset means includes unidirectional signal translating means.
Claim 6
Dependent Claim
24 words
The solenoid driving circuit of claim 1 in which the high-voltage solenoid energizing pulse is of shorter duration than the low-voltage solenoid holding pulse.
Claim 7
Dependent Claim
171 words
A solenoid driving circuit comprising, in combination, first operational amplifier means having an inverting input, a non-inverting input, an output, and feedback means connecting the output and the non-inverting input; input signal means connected to the non-inverting input of said first operational amplifier means and capable of applying an input signal thereto; means for connecting a source of threshold potential to the inverting input of said first operational amplifier means; second operational amplifier means having an inverting input, a non-inverting input, an output, and feedback means connecting the output and the non-inverting input; means for connecting a source of threshold potential to the non-inverting input of said second operational amplifier means; signal transmitting means for applying a signal from the output of said first operational amplifier means to the inverting input of said second operational amplifier means, and including signal duration limiting means; and high-voltage driver means connected to the output of said second operational amplifier means and responsive to a signal on said output to produce a high-voltage solenoid-energizing pulse.
Claim 8
Dependent Claim
171 words
A solenoid driving circuit comprising, in combination, first operational amplifier means having an inverting input, a non-inverting input, an output, and feedback means connecting the output and the non-inverting input; input signal means connected to the non-inverting input of said first operational amplifier means and capable of applying an input signal thereto; means for connecting a source of threshold potential to the inverting input of said first operational amplifier means; second operational amplifier means having an inverting input, a non-inverting input, an output, and feedback means connecting the output and the non-inverting input; means for connecting a source of threshold potential to the non-inverting input of said second operational amplifier means; signal transmitting means for applying a signal from the output of said first operational amplifier means to the inverting input of said second operational amplifier means, and including signal duration limiting means; and high-voltage driver means connected to the output of said second operational amplifier means and responsive to a signal on said output to produce a high-voltage solenoid-energizing pulse.
Claim 9
Dependent Claim
19 words
The solenoid driving circuit of claim 6 in which the signal duration limiting means includes capacitive and resistive elements.
Claim 10
Dependent Claim
34 words
The solenoid driving circuit of claim 6, also including fast reset means connected to the inverting input of said second operational amplifier means for enabling the rapid resetting of the signal duration limiting means.
Claim 11
Dependent Claim
18 words
The solenoid driving circuit of claim 8 in which the fast reset means includes unidirectional signal translating means.
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) | 1978-06-09 | 1978-12-09 | 1979-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-09 | 1982-12-09 | 1983-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-09 | 1986-12-09 | 1987-06-10 | $7700.00 | Window Closed / Lapsed |