US3715863A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compact pump/air separator apparatus
Assignee: Bennett Pump Inc
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Filing: 1971-03-26
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Granted: 1973-02-13
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Expires: 1991-03-26
Abstract
Abstract A pump/air separator apparatus for use in dispensing gasoline includes an air separator of the cyclone type in which air and a low percentage of gasoline are removed from the pressurized gasoline by the air separator, with the air being vented to the atmosphere and the gasoline being returned to the suction side of the pump. Simultaneously pure gasoline is delivered from the air separator through an outlet valve to a meter and then to the nozzle dispenser, and any excess of such pure gasoline is bypassed back to the suction side of the pump.
Inventors
- 👤 P Zanoni
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:32
CPC Classifications
B; B67; B67D; B67D7/00; B67D7/06; B67D7/76; B67D7/763; B01; B01D; B01D19/00; B01D19/0042; B01D19/0052; B01D19/0063; F; F04; F04C; F04C13/00; F04C13/007; F04C15/00; F04C15/0053
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
214 words
A compact pump/air separator comprising: a housing means having interior wall defining first, second and third internal cavities; said cavities being interconnected; said housing means further having inlet means in communication with said first cavity: pump means located in said first cavity; air separator means located in said first cavity and in communication with the outlet of the pump means, said air separator being of the tangential entry cyclone type including a scavenging tube located at the core of the separator wherein air and a small percentage of gasoline are collected, said scavenging tube being fixed to the wall separating the first and third cavities, said wall including an orifice communicating the interior of the tube to the third cavity; said air separator being operative to convey air and a small percentage of gasoline to said third cavity, with the remainder of the gasoline flowing from said air separator means to said second cavity; said third cavity including outlet means to discharge the collected air from the housing means and to return gasoline to the suction side of the pump; and said second cavity including a controlled outlet for discharging gasoline and a by-pass outlet in communication with said first cavity for recycling gasoline to said pump means when the controlled outlet is restricted.
Claim 2
Dependent Claim
214 words
A compact pump/air separator comprising: a housing means having interior wall defining first, second and third internal cavities; said cavities being interconnected; said housing means further having inlet means in communication with said first cavity: pump means located in said first cavity; air separator means located in said first cavity and in communication with the outlet of the pump means, said air separator being of the tangential entry cyclone type including a scavenging tube located at the core of the separator wherein air and a small percentage of gasoline are collected, said scavenging tube being fixed to the wall separating the first and third cavities, said wall including an orifice communicating the interior of the tube to the third cavity; said air separator being operative to convey air and a small percentage of gasoline to said third cavity, with the remainder of the gasoline flowing from said air separator means to said second cavity; said third cavity including outlet means to discharge the collected air from the housing means and to return gasoline to the suction side of the pump; and said second cavity including a controlled outlet for discharging gasoline and a by-pass outlet in communication with said first cavity for recycling gasoline to said pump means when the controlled outlet is restricted.
Claim 3
Dependent Claim
214 words
A compact pump/air separator comprising: a housing means having interior wall defining first, second and third internal cavities; said cavities being interconnected; said housing means further having inlet means in communication with said first cavity: pump means located in said first cavity; air separator means located in said first cavity and in communication with the outlet of the pump means, said air separator being of the tangential entry cyclone type including a scavenging tube located at the core of the separator wherein air and a small percentage of gasoline are collected, said scavenging tube being fixed to the wall separating the first and third cavities, said wall including an orifice communicating the interior of the tube to the third cavity; said air separator being operative to convey air and a small percentage of gasoline to said third cavity, with the remainder of the gasoline flowing from said air separator means to said second cavity; said third cavity including outlet means to discharge the collected air from the housing means and to return gasoline to the suction side of the pump; and said second cavity including a controlled outlet for discharging gasoline and a by-pass outlet in communication with said first cavity for recycling gasoline to said pump means when the controlled outlet is restricted.
Claim 4
Dependent Claim
214 words
A compact pump/air separator comprising: a housing means having interior wall defining first, second and third internal cavities; said cavities being interconnected; said housing means further having inlet means in communication with said first cavity: pump means located in said first cavity; air separator means located in said first cavity and in communication with the outlet of the pump means, said air separator being of the tangential entry cyclone type including a scavenging tube located at the core of the separator wherein air and a small percentage of gasoline are collected, said scavenging tube being fixed to the wall separating the first and third cavities, said wall including an orifice communicating the interior of the tube to the third cavity; said air separator being operative to convey air and a small percentage of gasoline to said third cavity, with the remainder of the gasoline flowing from said air separator means to said second cavity; said third cavity including outlet means to discharge the collected air from the housing means and to return gasoline to the suction side of the pump; and said second cavity including a controlled outlet for discharging gasoline and a by-pass outlet in communication with said first cavity for recycling gasoline to said pump means when the controlled outlet is restricted.
Claim 5
Dependent Claim
17 words
A compact pump/air separator as in claim 1, wherein said pump means comprises a rotary vane pump.
Claim 6
Dependent Claim
49 words
A compact pump/air separator as in claim 1, wherein the opening between the first and third cavities is tapered and wherein a pin, positioned by a float valve is provided in said third cavity for controllably throttling the flow of gasoline from said third cavity to said first cavity.
Claim 7
Dependent Claim
29 words
Apparatus as in claim 1 wherein the pressurized fluid flowing through the air separator of the tangential entry cyclone type assumes a helix angle between 10* and 30* .
Claim 8
Dependent Claim
137 words
A compact pump/air separator for pressurizing gasoline flow and separating air and vapor therefrom comprising: pump means in communication with a source of gasoline; an air separator of the tangential entry cyclone type in communication with the outlet of said pump means and operative to separate a small percentage of gasoline and air and vapor from pure gasoline; valve means located downstream of said air separator to either discharge the pure gasoline from the compact pump/air separator for dispensing or to return the pure gasoline to the inlet side of said pump means; and means for separating the air and vapor from the small percentage of gasoline, said means including a vent to discharge the air and vapor to the atmosphere and second valve means for returning the gasoline to the inlet side of said pump means.
Claim 9
Dependent Claim
137 words
A compact pump/air separator for pressurizing gasoline flow and separating air and vapor therefrom comprising: pump means in communication with a source of gasoline; an air separator of the tangential entry cyclone type in communication with the outlet of said pump means and operative to separate a small percentage of gasoline and air and vapor from pure gasoline; valve means located downstream of said air separator to either discharge the pure gasoline from the compact pump/air separator for dispensing or to return the pure gasoline to the inlet side of said pump means; and means for separating the air and vapor from the small percentage of gasoline, said means including a vent to discharge the air and vapor to the atmosphere and second valve means for returning the gasoline to the inlet side of said pump means.
Claim 10
Dependent Claim
17 words
A compact pump/air separator as in claim 5 wherein said pump means comprises a rotary vane pump.
Claim 11
Dependent Claim
56 words
A compact pump/air separator as in claim 5, wherein said air separator includes a scavenging tube located at the core of the separator wherein the air and vapor and small percentage of gasoline are collected, said scavenging tube being in communication with the means for separating the air and vapor from the small percentage of gasoline.
Claim 12
Dependent Claim
47 words
A compact pump/air separator as in claim 5 wherein said second valve means includes a float valve provided in said means for separating the air and vapor from the small percentage of gasoline to control the flow of gasoline to the inlet side of said pump means.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |