US3921682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic fuel dispensing nozzle
Assignee: Texaco Inc
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Filing: 1973-05-09
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Granted: 1975-11-25
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Expires: 1993-05-09
Abstract
Abstract An automatically operating fuel dispensing nozzle adapted to function within a sealed fuel system. In particular a signal system incorporated within said nozzle which functions to permit a topping-off operation for filling a fuel tank, or for automatically discontinuing a filling operation in response to an excessive pressure which might build up within the fuel tank or other parts of the closed system.
Inventors
- 👤 Dean C Mcgahey
- 👤 Eugene W Vest
- 👤 Edward A Mayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:40
CPC Classifications
B; B67; B67D; B67D7/00; B67D7/06; B67D7/42; B67D7/44; B67D7/46; B67D7/48
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
373 words
An automatic fuel dispensing nozzle communicated with a source of fuel, said nozzle having a spout (17) adapted to engage a fuel tank filler tube (28) thereby to form said nozzle, fuel tank and fuel source into a closed fuel system; a fuel conduit (13) in said nozzle, main (16) and secondary (14) flow control valves positioned in said conduit (13), an actuating arm (21) operably connected to said main (16) and secondary (14) flow control valves respectively, and being movable to adjust and lock said respective flow control valves (14 and 16) in an open position to permit a rapid fuel flow through said nozzle to said fuel tank, first valve release means (19) connected to said secondary flow control valve (14), being operable to automatically adjust the latter to a closed position in response to a vacuum condition created at said nozzle spout by a rise of fuel in the latter thereby adjusting said rapid fuel flow to a slower, topping-off fuel flow, second valve release means (22) connected to said main flow control valve (16), being operable to automatically adjust the latter to a fully closed position in response to a second occurring vacuum condition at said spout in response to the rise of fuel in the latter, whereby to achieve complete shut off of fuel flow through said nozzle, and pressure sensing means including a sensing passage (29) opening into said spout, and communicating the latter with said first and second valve release means (19) and (22) respectively, said sensing passage (29) including a selector valve (23) operable when in the open position during said topping-off fuel flow to communicate said second valve release means (22) with said nozzle spout (17), whereby to actuate said second valve release means to close said main valve (14) in response to a vacuum condition at said spout (17), and being further operable when in the closed position during said rapid fuel flow, to be adjusted to an open position in response to an excessive pressure at said nozzle (17) caused by a pressure accumulation in said fuel tank during the filling operation whereby to actuate said second valve release means to close said main valve and discontinue fuel flow to said tank.
Claim 2
Dependent Claim
373 words
An automatic fuel dispensing nozzle communicated with a source of fuel, said nozzle having a spout (17) adapted to engage a fuel tank filler tube (28) thereby to form said nozzle, fuel tank and fuel source into a closed fuel system; a fuel conduit (13) in said nozzle, main (16) and secondary (14) flow control valves positioned in said conduit (13), an actuating arm (21) operably connected to said main (16) and secondary (14) flow control valves respectively, and being movable to adjust and lock said respective flow control valves (14 and 16) in an open position to permit a rapid fuel flow through said nozzle to said fuel tank, first valve release means (19) connected to said secondary flow control valve (14), being operable to automatically adjust the latter to a closed position in response to a vacuum condition created at said nozzle spout by a rise of fuel in the latter thereby adjusting said rapid fuel flow to a slower, topping-off fuel flow, second valve release means (22) connected to said main flow control valve (16), being operable to automatically adjust the latter to a fully closed position in response to a second occurring vacuum condition at said spout in response to the rise of fuel in the latter, whereby to achieve complete shut off of fuel flow through said nozzle, and pressure sensing means including a sensing passage (29) opening into said spout, and communicating the latter with said first and second valve release means (19) and (22) respectively, said sensing passage (29) including a selector valve (23) operable when in the open position during said topping-off fuel flow to communicate said second valve release means (22) with said nozzle spout (17), whereby to actuate said second valve release means to close said main valve (14) in response to a vacuum condition at said spout (17), and being further operable when in the closed position during said rapid fuel flow, to be adjusted to an open position in response to an excessive pressure at said nozzle (17) caused by a pressure accumulation in said fuel tank during the filling operation whereby to actuate said second valve release means to close said main valve and discontinue fuel flow to said tank.
Claim 3
Dependent Claim
51 words
A fuel dispensing nozzle as defined in claim 1, wherein said selector valve (23) includes spring means in said selector valve positioned to hold said selector valve in the closed position and yieldable to permit opening of said selector valve in response to a predetermined pressure exerted on said selector valve.
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) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |