Patent US540515A successfully refreshed from Google Patents.
US4067486A
Expired / Lapsed
US
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Liquid fuel dispensing system
Assignee: Dresser Europe SPRL
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Filing: 1975-09-17
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Granted: 1978-01-10
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Expires: 1995-09-17
Abstract
Abstract A liquid fuel dispensing system having a plurality of dispensing pumps each generating electric pulses according to the volume of fuel dispensed and a central control where payment is made. A data transmission link couples each pump to the central control and each pump has a pulse store which accumulates pulses generated by the pump during a dispensing operation. A sampling mechanism at the central control samples the outputs from the pulse stores which are updated at each sampling. First and second storage elements are provided to store information at the central control relating to previous pump transaction whereby such pump can be cleared for use by second customer before first customer has paid.
Inventors
- 👤 Peter John Hyde
- 👤 Peter Kendall Cripps
- 👤 Donald George Buchanan
- 👤 Robert George Spalding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:38
CPC Classifications
B; B67; B67D; B67D7/00; B67D7/06; B67D7/08; B67D7/22; B67D7/224; B67D7/227; B67D7/228; G; G07; G07F; G07F15/00; G07F5/00; G07F5/18; G07F9/00; G07F9/002
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
110 words
In a liquid fuel dispensing system having a plurality of liquid fuel dispensing pumps, means within said pumps to generate electrical pulses indicative of data which is functionally related to the fuel dispensed, a central control station and a data transmission link between said pumps and said central control station, the improvement comprising: first and second storage means within said central control station for storing within each of said storage means the electrical pulses indicative of the same data from a given one of said fuel pumps; and means to clear the first of said storage means while maintaining the pulses stored in said second storage means for subsequent retrieval.
Claim 2
Dependent Claim
110 words
In a liquid fuel dispensing system having a plurality of liquid fuel dispensing pumps, means within said pumps to generate electrical pulses indicative of data which is functionally related to the fuel dispensed, a central control station and a data transmission link between said pumps and said central control station, the improvement comprising: first and second storage means within said central control station for storing within each of said storage means the electrical pulses indicative of the same data from a given one of said fuel pumps; and means to clear the first of said storage means while maintaining the pulses stored in said second storage means for subsequent retrieval.
Claim 3
Dependent Claim
31 words
The system according to claim 1, the improvement additionally comprising means to clear for use said given one of said pumps substantially simultaneously with the clearing of said first storage 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) | 1981-01-09 | 1981-07-11 | 1982-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-09 | 1985-07-11 | 1986-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-09 | 1989-07-11 | 1990-01-10 | $7700.00 | Window Closed / Lapsed |