US3586069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic dispensing nozzle
Assignee: Texaco Inc
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Filing: 1969-05-02
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Granted: 1971-06-22
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Expires: 1989-05-02
Abstract
Abstract An automatic dispensing nozzle having means, in addition to the conventional vacuum responsive means for closing the main valve to reinstitute flow thru the nozzle at a relatively slow, predetermined rate suitable for carrying out the final or ''''topping-off'''' operation. With subsequent rise of fluid around the nozzle spout the resulting vacuum signal finally shuts off the operation. There is a predetermined time delay following initial closure of the main valve and prior to reinstitution of flow, sufficient to permit initial subsidence of fluid from about the spout of the nozzle.
Inventors
- 👤 Eugene W Vest
- 👤 Dean C Mcgahey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:03
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
206 words
In an automatic dispensing nozzle for supplying liquid fuel and the like to the filler pipe of a fuel tank wherein said nozzle is provided with a supply conduit for said liquid terminating in a filler spout, a main control valve in said conduit for controlling the flow of liquid fuel thru said nozzle, releasable means for latching said main control valve in fullopen position and release means for closing said main control valve in rEsponse to rise of fluid about the spout, said last named means being, in turn, responsive to a vacuum impulse and involving means for creating a vacuum impulse in response to the rise of liquid fuel about said spout as in the filler pipe of a fuel tank, the improvement which comprises means responsive to the initial closure of said main control valve, automatically to reopen said main control valve to a substantially reduced point of valve opening effective to permit a relatively low flow rate of said liquid fuel, said release means for closing said main control valve being also responsive to the second vacuum impulse created by the rise of fluid about said spout in a fuel tank filler pipe for effecting final shutoff of said main control valve.
Claim 2
Dependent Claim
206 words
In an automatic dispensing nozzle for supplying liquid fuel and the like to the filler pipe of a fuel tank wherein said nozzle is provided with a supply conduit for said liquid terminating in a filler spout, a main control valve in said conduit for controlling the flow of liquid fuel thru said nozzle, releasable means for latching said main control valve in fullopen position and release means for closing said main control valve in rEsponse to rise of fluid about the spout, said last named means being, in turn, responsive to a vacuum impulse and involving means for creating a vacuum impulse in response to the rise of liquid fuel about said spout as in the filler pipe of a fuel tank, the improvement which comprises means responsive to the initial closure of said main control valve, automatically to reopen said main control valve to a substantially reduced point of valve opening effective to permit a relatively low flow rate of said liquid fuel, said release means for closing said main control valve being also responsive to the second vacuum impulse created by the rise of fluid about said spout in a fuel tank filler pipe for effecting final shutoff of said main control valve.
Claim 3
Dependent Claim
48 words
An automatic dispensing nozzle as defined in claim 1, including means to effect delayed action of said automatic valve reopening means for a predetermined period of time effective to permit the subsidence of fluid surge in a filler pipe and the resetting of said main valve release means.
Claim 4
Dependent Claim
38 words
An automatic dispensing nozzle as defined in claim 1 wherein said means for reopening said main control valve to a substantially reduced point of valve opening is energized by latching of said main valve in full open position.
Claim 5
Dependent Claim
98 words
An automatic dispensing nozzle as defined in claim 1 wherein said means for reopening said main control valve to a substantially reduced point of valve opening is energized by a spring loaded dashpot, means for loading said spring actuated dashpot by latching said main valve in full open position, means effecting a predetermined time delay in the operation of said spring loaded dashpot to permit subsidence of initial surge of liquid from about the spout of said dispensing nozzle and resetting of said main control valve release means prior to reopening of said valve to low flow position.
Claim 6
Dependent Claim
93 words
An automatic dispensing nozzle as defined in claim 1, wherein said means to automatically reopen said main control valve to the low flow rate of liquid comprises a. a pivoted latch means for latching said main valve in full open position, b. spring pressed means connected with said latching means to urge said latching means to retracted position, said spring-pressed means being energy loaded by actuation of said latch to valve latching position, and c. means associated with said pivoted latching member in retracted position to open said valve to low flow position.
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 |