Patent US3586072A successfully refreshed from Google Patents.
US3586072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic dispensing nozzle
Assignee: Texaco Inc
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Filing: 1969-07-30
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Granted: 1971-06-22
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Expires: 1989-07-30
Abstract
Abstract An automatic dispensing nozzle for liquid fuel of the type in which a main valve control lever is mounted on a fulcrum held in place by a quick release latch, responsive to a vacuum signal, wherein the latching device releases the fulcrum successively in two stages, in the first of which the main valve is closed to the point where flow is quite restricted, and in the final stage wherein the plunger is released to permit complete closure of the valve.
Inventors
- 👤 Dean C Mcgahey
- 👤 Eugene W Vest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:28
CPC Classifications
B; B67; B67D; B67D7/00; B67D7/06; B67D7/42; B67D7/44; B67D7/46; B67D7/48
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
209 words
In an automatic dispensing nozzle for supplying liquid fuel and the like to the filler pipe of a fuel tank for automatically conducting the initial filling of said tank and the subsequent topping-off operation, said nozzle having a supply conduit therein for said fluid, terminating in a filler spout adapted to be received within the filler pipe of a fuel tank, a main spring closed, control valve in said conduit, a lever operating about a fulcrum for actuating said main control valve to open position, latching means for holding said lever in full flow open position, said lever fulcrum being mounted on fulcrum lockout plunger normally locked out in operative position, and means responsive to rise of fluid about the tip of said nozzle for creating a vacuum signal, the improvement which comprises, means responsive to the initial vacuum signal following the latching of said operating lever in full-flow position to shift the fulcrum plunger longitudinally a predetermined distance to a fixed location permitting the main valve to move to a second predetermined, partially closed position at which flow of liquid is restricted to a relatively low-flow, topping-off rate, and means responsive to a second vacuum signal for releasing said plunger to permit complete closure of the main valve.
Claim 2
Dependent Claim
209 words
In an automatic dispensing nozzle for supplying liquid fuel and the like to the filler pipe of a fuel tank for automatically conducting the initial filling of said tank and the subsequent topping-off operation, said nozzle having a supply conduit therein for said fluid, terminating in a filler spout adapted to be received within the filler pipe of a fuel tank, a main spring closed, control valve in said conduit, a lever operating about a fulcrum for actuating said main control valve to open position, latching means for holding said lever in full flow open position, said lever fulcrum being mounted on fulcrum lockout plunger normally locked out in operative position, and means responsive to rise of fluid about the tip of said nozzle for creating a vacuum signal, the improvement which comprises, means responsive to the initial vacuum signal following the latching of said operating lever in full-flow position to shift the fulcrum plunger longitudinally a predetermined distance to a fixed location permitting the main valve to move to a second predetermined, partially closed position at which flow of liquid is restricted to a relatively low-flow, topping-off rate, and means responsive to a second vacuum signal for releasing said plunger to permit complete closure of the main valve.
Claim 3
Dependent Claim
131 words
An automatic dispensing nozzle as called for in claim 1 wherein said fulcrum lockout plunger is provided with contiguous notches of successively decreasing depth and where lockout of said plunger is effected by a locking member laterally urged into said notches, the successive positioning of the plunger being effected by an axially extending notch having a relatively deep portion and a relatively shallow portion separated by a transversely extending shoulder, said locking means normally engaging said relatively deep notch against said shoulder to positively hold said plunger in normal position, said locking means engaging in said relatively shallow notch to hold said plunger in said second or low-flow position, and means in response to said first vacuum signal to position said locking means in said relatively shallow portion of said notch.
Claim 4
Dependent Claim
106 words
An automatic dispensing nozzle as called for in claim 1 wherein said fulcrum lockout plunger is provided with longitudinally spaced notches of successively decreasing depth and where lockout of said plunger is effected by a locking member laterally engageable with said notches, said locking member engaging a relatively deep notch when said lever and valve are in full-flow position, said locking member being laterally shiftable in response to an initial vacuum signal to engage a relatively shallow notch arranged to lock out said plunger in second or low-flow position, said locking member being shiftable in response to a second vacuum signal to release said fulcrum plunger.
Claim 5
Dependent Claim
86 words
An automatic dispensing nozzle as called for in claim 3 wherein said internal conduit is provided downstream of said main control valve with a check valve opening in response to the flow of liquid therein, said valve member being resiliently biased towards closed position whereby sharp decrease in the flow of liquid through said conduit causes said check valve momentarily to close, thereby to effect a predetermined time interval of flow cessation between the period of normal flow and the relatively low topping-off rate of flow.
Claim 6
Dependent Claim
27 words
An automatic dispensing nozzle as called for in claim 4 wherein said check valve member is provided with a dashpot means for causing a predetermined delayed action.
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) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |