Patent US3799310A successfully refreshed from Google Patents.
US3799310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid dispenser having solid state control
Assignee: Tokheim Corp
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Filing: 1972-05-25
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Granted: 1974-03-26
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Expires: 1992-05-25
Abstract
Abstract A system, including a totally electronic logic control device, is provided for controlling a dispenser of liquids, primarily gasoline, in response to currency introduction before and during delivery. The control, consisting exclusively of electrical connections between the currency validator, electronic control device and dispenser, will permit precise delivery of a determined amount in relation to instantaneously correlated control signals. Additionally, the invention is adaptable to control delivery in response to a remote console unit where credit is preselected manually by an operator.
Inventors
- 👤 P Mims
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:09
CPC Classifications
B; B67; B67D; B67D7/00; B67D7/06; B67D7/08; B67D7/30; B67D7/305; B67D7/307; B67D7/308; G; G07; G07F; G07F13/00; G07F13/02; G07F13/025; G07F7/00; G07F7/04
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
165 words
A liquid dispensing apparatus comprising a manually operable nozzle valve, a pump for supplying a flow of liquid to said nozzle valve, a pump motor including pump supply measuring means for determining the amount of liquid dispensed, a resettable value register, including a clear switch actUated thereby, computing means connected to be driven by said measuring means and connected to drive said resettable value register in accordance with the value of the liquid dispensed, pulse generation means for transmitting electrical pulses commensurate with fluid delivered to said nozzle valve, wherein the improvement comprises a control means for control of said pump motor, said control means comprising: a. registering means comprising two cascaded, 5-bit shift registers with parallel inputs and outputs connected as a ring counter for accumulating input pulses from said pulse generation means at a substantially unlimited rate, and for producing an output pulse for each predetermined number of said input pulses, and b. means for transmitting said output pulse to said pump motor.
Claim 2
Dependent Claim
165 words
A liquid dispensing apparatus comprising a manually operable nozzle valve, a pump for supplying a flow of liquid to said nozzle valve, a pump motor including pump supply measuring means for determining the amount of liquid dispensed, a resettable value register, including a clear switch actUated thereby, computing means connected to be driven by said measuring means and connected to drive said resettable value register in accordance with the value of the liquid dispensed, pulse generation means for transmitting electrical pulses commensurate with fluid delivered to said nozzle valve, wherein the improvement comprises a control means for control of said pump motor, said control means comprising: a. registering means comprising two cascaded, 5-bit shift registers with parallel inputs and outputs connected as a ring counter for accumulating input pulses from said pulse generation means at a substantially unlimited rate, and for producing an output pulse for each predetermined number of said input pulses, and b. means for transmitting said output pulse to said pump motor.
Claim 3
Dependent Claim
73 words
a second credit accumulating means responsive to the establishment of paper currency credit in said credit establishing means; c. a logic comparator means effective to operate bi-directionally as a binary in response to said registering means output pulse and said credit establishing means as to produce an output control signal for each condition therein; and d. motor control means for transmitting said output control signal from said logic comparator to said pump motor.
Claim 4
Dependent Claim
73 words
a second credit accumulating means responsive to the establishment of paper currency credit in said credit establishing means; c. a logic comparator means effective to operate bi-directionally as a binary in response to said registering means output pulse and said credit establishing means as to produce an output control signal for each condition therein; and d. motor control means for transmitting said output control signal from said logic comparator to said pump motor.
Claim 5
Dependent Claim
49 words
A liquid dispensing apparatus as defined in claim 1 wherein said control means further comprising: a. a currency validator capable of accepting valid currency and rejecting invalid currency; b. credit establishing means in response to valid currency accepted by said currency validator wherein said credit establishing means further comprises:
Claim 6
Dependent Claim
62 words
A liquid dispensing apparatus defined in claim 1 wherein said control means further comprises: a. a nand gate means to enable said pump motor to operate in response to said output control signals and to deactivate said pump motor coincidental with termination of said output control signals; and b. a manual switch means to disable said control means and allow independent operation.
Claim 7
Dependent Claim
20 words
A liquid dispensing apparatus defined in claim 2 wherein said first credit accumulating means includes a 2-bit binary up-down counter.
Claim 8
Dependent Claim
21 words
A liquid dispensing apparatus defined in claim 2 wherein said second credit accumulating means includes a synchronous 4-bit up-down binary accumulator.
Claim 9
Dependent Claim
45 words
A liquid dispensing apparatus as defined in claim 2 wherein said logic comparator means is further effective to receive said first credit accumulating means and said second credit accumulating means coterminous with the receipt of said control means thereby allowing currency deposition while dispensing liquid.
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) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |