US3666928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gasoline pump calculator
Assignee: PAN NOVA
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Filing: 1971-04-30
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Granted: 1972-05-30
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Expires: 1991-04-30
Abstract
Abstract A calculator for use in a gasoline dispenser or the like for calculating amount of sale and volume dispensed, and for displaying the amount and volume of sale and the price per gallon. A pulse generator actuated by the flow meter provides volume pulses at a relatively low rate as a function of volume dispensed. Volume pulses are counted directly for volume computation. Each volume pulse gates on a clock pulse generator running at a relatively high rate, with the on time controlled by a preset price counter. Clock pulses are counted for amount of sale computation and are counted for gate on time control.
Inventors
- 👤 William F Burke
- 👤 Daniel A Gihring
- 👤 Thomas E Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:30
CPC Classifications
B; B67; B67D; B67D7/00; B67D7/06; B67D7/08; B67D7/22; B67D7/224; B67D7/227; B67D7/228; G; G06; G06F; G06F7/00; G06F7/60; G06F7/62; G06Q; G06Q50/00; G06Q50/06
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
233 words
In a calculator for a material dispenser, the combination of: a volume pulse generator producing volume pulses as a function of material dispensed; a clock pulse generator producing clock pulses; a sale accumulator including means for counting input pulses and displaying the count state for indicating the monetary amount of a sale of material; a price counter including means for counting input pulses; means for developing a stop signal when said price counter counts to a predetermined figure and including means for changing said figure; a gate circuit for passing pulses from the gate input to the gate output when the gate is in the on condition and blocking pulses when the gate is in the off condition; means connecting said clock pulses to said gate input; means connecting said gate output to the input of said sale accumulator and to the input of said price counter; means connecting said volume pulses to said gate circuit in controlling relation for switching the gate circuit to the on condition for each volume pulse; means connecting said volume pulses to said gate circuit in controlling relation for switching the gate circuit to the off condition; and means for resetting said price counter to the initial count state for each volume pulse; with said sale accumulator counting for each volume pulse, a number of clock pulses corresponding to the price of a unit volume of material.
Claim 2
Dependent Claim
233 words
In a calculator for a material dispenser, the combination of: a volume pulse generator producing volume pulses as a function of material dispensed; a clock pulse generator producing clock pulses; a sale accumulator including means for counting input pulses and displaying the count state for indicating the monetary amount of a sale of material; a price counter including means for counting input pulses; means for developing a stop signal when said price counter counts to a predetermined figure and including means for changing said figure; a gate circuit for passing pulses from the gate input to the gate output when the gate is in the on condition and blocking pulses when the gate is in the off condition; means connecting said clock pulses to said gate input; means connecting said gate output to the input of said sale accumulator and to the input of said price counter; means connecting said volume pulses to said gate circuit in controlling relation for switching the gate circuit to the on condition for each volume pulse; means connecting said volume pulses to said gate circuit in controlling relation for switching the gate circuit to the off condition; and means for resetting said price counter to the initial count state for each volume pulse; with said sale accumulator counting for each volume pulse, a number of clock pulses corresponding to the price of a unit volume of material.
Claim 3
Dependent Claim
44 words
A calculator as defined in claim 1 in which said volume pulse generator operates at a relatively low pulse rate and said clock pulse generator operates at a relatively high pulse rate at least several orders of magnitude greater than said low pulse rate.
Claim 4
Dependent Claim
42 words
A calculator as defined in claim 1 including a volume accumulator having means for counting input pulses and displaying the count state for indicating the volume of material dispensed, and means connecting said volume pulses to the input of said volume accumulator.
Claim 5
Dependent Claim
39 words
A calculator as defined in claim 3 including price means for displaying said predetermined figure, and means connecting said means for developing a stop signal to said price means for changing the displaying thereof when said figure is changed.
Claim 6
Dependent Claim
46 words
A calculator as defined in claim 4 including a reset circuit having a switch for actuation by the party dispensing the material, and means connecting said reset circuit to said sale and volume accumulators for resetting them to the initial condition when said switch is actuated.
Claim 7
Dependent Claim
33 words
A calculator as defined in claim 5 in which said volume pulse generator includes a meter driving a shaft rotating as a function of flow, and a switch actuated by said rotating shaft.
Claim 8
Dependent Claim
88 words
A calculator as defined in claim 1 in which said sale accumulator includes: a first counter having clock pulses as an input and counting to a unit-of-sale corresponding to the smallest monetary value calculated and displayed; a second counter providing an output for each of said units-of-sale and decimal multiples thereof; and a half unit-of-sale decoder connecting said first counter to said second counter, said decoder transmitting a pulse from said first counter to said second counter when said first counter has counted to one-half of a unit-of-sale.
Claim 9
Dependent Claim
63 words
A calculator as defined in claim 7 in which said first counter includes a decade counter unit counting in 10ths of said unit-of-sale and having an output for each 10th counted, and said decoder includes a logic gate having at least some of said counter unit outputs as inputs and providing an output to said second counter only for the five-tenths count state.
Claim 10
Dependent Claim
103 words
A calculator as defined in claim 1 in which said means for developing a stop signal includes: decoder means for converting the count state of said price counter to a decimal code providing a mUlti digit decimal output; a selector switch for each digit of the predetermined figure and having 10 inputs and an output; means connecting each decoder means decimal output to a selector switch as inputs; and a logic gate having each of said selector switch outputs as an input and providing the stop signal when the count state of said price counter corresponds to the setting of said selector switches.
References Cited (Backward Citations)
US3043508A
Cited
US3549868A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |