US3818192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Remote control and display for a liquid dispensing system
Assignee: Lockheed Electronics Co Inc
•
Filing: 1972-11-09
•
Granted: 1974-06-18
•
Expires: 1992-11-09
Abstract
Abstract An electronic calculator and control system for a gasoline dispenser or the like for remotely controlling the dispenser and displaying the accumulated sale and/or volume. A pulse generator is actuated as the fuel is dispensed and the count is stored in a decade counter. A plurality of flip-flops (latches) and control logic provide control functions such as applying power to the dispenser, lighting proper indicators on a control panel, transferring the accumulated count to readout devices, preserving a count for at least one readout, resetting the counters, turning off the dispenser in the event the sale exceeds a certain amount, and an override if it is desirable to exceed this amount. Provision is made for operating a plurality of dispensers utilizing the same readout devices. The pulse generator is preferably an A.C. to D.C. converter utilizing an optical coupler.
Inventors
- 👤 E Anderson
- 👤 W Oetting
- 👤 J Dow
- 👤 W Gutman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:20
CPC Classifications
B; B67; B67D; B67D7/00; B67D7/06; B67D7/08; B67D7/22; B67D7/224; B67D7/227; B67D7/228
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
185 words
A calculator and control system for fuel dispensing or the like comprising a plurality of dispensers, control logic and a decade counter for each dispenser, pulse generator means at Each dispenser producing pulses as a function of fuel dispensed, means connecting the pulse generator output to the decade counters for each dispenser, the control logic comprising a first latch means for resetting the counters and energizing a relay for applying AC power to the dispenser, a dispenser switch when actuated resets the dispenser counters and actuates the pulser, a second latch means responsive to resetting of the second latch for inhibiting further operation of said first latch until at least one readout from a counter decade has been made, a third latch means for transferring the accumulated count from the decade counters to a readout display, and actuating said second latch to remove the inhibit from said first latch, a fourth latch means responsive to a predetermined count for deenergizing said relay applying power to the dispenser, and a fifth latch means for overriding said fourth latch when said predetermined count is to be exceeded.
Claim 2
Dependent Claim
185 words
A calculator and control system for fuel dispensing or the like comprising a plurality of dispensers, control logic and a decade counter for each dispenser, pulse generator means at Each dispenser producing pulses as a function of fuel dispensed, means connecting the pulse generator output to the decade counters for each dispenser, the control logic comprising a first latch means for resetting the counters and energizing a relay for applying AC power to the dispenser, a dispenser switch when actuated resets the dispenser counters and actuates the pulser, a second latch means responsive to resetting of the second latch for inhibiting further operation of said first latch until at least one readout from a counter decade has been made, a third latch means for transferring the accumulated count from the decade counters to a readout display, and actuating said second latch to remove the inhibit from said first latch, a fourth latch means responsive to a predetermined count for deenergizing said relay applying power to the dispenser, and a fifth latch means for overriding said fourth latch when said predetermined count is to be exceeded.
Claim 3
Dependent Claim
15 words
A system as defined in claim 1 wherein the second latch resets the fifth latch.
Claim 4
Dependent Claim
17 words
A system as defined in claim 1, wherein the first latch resets the second and fourth latches.
Claim 5
Dependent Claim
51 words
A system as defined in claim 1, and further including transfer gates for each decade and a decoder for converting the binary output of the counters to a decimal readout and wherein the third latch actuates the transfer gates and a blanking driver responsive to the third latch actuates the decoder.
Claim 6
Dependent Claim
73 words
A system as defined in claim 1, wherein the pulse generator comprises a pulse responsive to fuel dispensed for opening and closing the AC potential at the dispenser for providing a pulsed AC, a light emitting device responsive to the pulsed AC, a light sensitive element responsive to the light emitting device for generating a ramp-type voltage, and a Schmitt-type pulse shaper for generating a DC pulse for application to the decade counter.
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) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |