Patent US3799397A successfully refreshed from Google Patents.
US3799397A
Expired / Lapsed
US
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Dispensing nozzle with selectable automatic cut-off
Assignee: Individual
•
Filing: 1972-09-05
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Granted: 1974-03-26
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Expires: 1992-09-05
Abstract
Abstract A liquid dispensing nozzle of the type which automatically cuts off when the liquid level reaches a predetermined level is modified to cut off the liquid flow after a predetermined amount of liquid has been dispensed regardless of the liquid level. A closed bottom storage tube is placed into the spout, positioned to receive a proportion of the total liquid flow through the spout. When the liquid level in the storage tube reaches a predetermined level, it closes off the end of a selector tube which in turn creates a suction in the automatic cut-off mechanism to terminate the main liquid flow. The nozzle may also include a conventional liquid level cut-off. The storage tube can be wide open at its upper end to receive a proportion of the main flow, and the position of the bottom of the selector tube within the storage tube can be positioned either manually or by means of a coin operated mechanism. Alternatively, the selector tube can be stationary and the liquid can be metered through a valve into the storage tube in an amount proportional to the main flow.
Inventors
- 👤 W Mariner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:32
CPC Classifications
B; B67; B67D; B67D7/00; B67D7/06; B67D7/08; B67D7/30; B67D7/301; B67D7/42; B67D7/44; B67D7/46; B67D7/48
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
188 words
A liquid dispensing nozzle including: a body protion having an inlet and a passageway therethrough, a nozzle spout communicating with said body passageway and providing a discharge outlet for the liquid, a valve in the body portion for controlling the flow of liquid therethrough, means for opening the valve, holding means for holding the valve open to permit liquid to flow therethrough, means defining a control chamber which renders the holding means inoperable and hence permits the valve to close when the control chamber is subjected to a vacuum pressure, a storage means, a means for accumulating in said storage means a known proportion of a liquid flowing through the spout to and through the discharge outlet thereof, an open bottom selector tube in the storage means, said selector tube being in fluid communication with said control chamber, whereby when liquid accumulates in the storage means to a level to cover the bottom of the selector tube, a suction pressure is communicated to the control chamber to render the holding means inoperable and hence close the valve, regardless of the level of the delivered liquid through the spot.
Claim 2
Dependent Claim
188 words
A liquid dispensing nozzle including: a body protion having an inlet and a passageway therethrough, a nozzle spout communicating with said body passageway and providing a discharge outlet for the liquid, a valve in the body portion for controlling the flow of liquid therethrough, means for opening the valve, holding means for holding the valve open to permit liquid to flow therethrough, means defining a control chamber which renders the holding means inoperable and hence permits the valve to close when the control chamber is subjected to a vacuum pressure, a storage means, a means for accumulating in said storage means a known proportion of a liquid flowing through the spout to and through the discharge outlet thereof, an open bottom selector tube in the storage means, said selector tube being in fluid communication with said control chamber, whereby when liquid accumulates in the storage means to a level to cover the bottom of the selector tube, a suction pressure is communicated to the control chamber to render the holding means inoperable and hence close the valve, regardless of the level of the delivered liquid through the spot.
Claim 3
Dependent Claim
30 words
A liquid dispensing nozzle according to claim 1, said accumulating means comprising an adjustable metering valve for metering a predetermined proportion of said main liquid flow into said storage means.
Claim 4
Dependent Claim
16 words
A liquid dispensing nozzle according to claim 1, the bottom of the selector tube being stationary.
Claim 5
Dependent Claim
70 words
A liquid dispensing nozzle according to claim 3, said storage means being a storage tube located in the spout, the top of the tube being closed except for the passage therethrough of said selector tube and a tube leading to said metering valve, and the bottom of the storage tube being selectively openable to selectively release the liquid which has accumulated therein during each cycle of operation of the nozzle.
Claim 6
Dependent Claim
31 words
A liquid dispensing nozzle according to claim 3, including a pressure sensitive means for maintaining the flow through the metering valve constant for varying pressures in the main liquid flow line.
Claim 7
Dependent Claim
25 words
A liquid dispensing nozzle according to claim 1, including means for securing the spout in a tank opening during the delivery of the liquid therethrough.
Claim 8
Dependent Claim
31 words
A liquid dispensing nozzle according to claim 6, said securing means including a means for securing the spout into the opening in a gas tank vacated by the gas tank cap.
Claim 9
Dependent Claim
18 words
A liquid dispensing nozzle according to claim 1, said storage means comprising a storage tube in the spout.
Claim 10
Dependent Claim
34 words
A liquid dispensing nozzle according to claim 8, the bottom of the storage tube being selectively openable to selectively release the liquid which has accumulated therein during each cycle of operation of the nozzle.
Claim 11
Dependent Claim
131 words
A liquid dispensing nozzle according to claim 8, said selector tube leading from an open bottom located within the storage tube to a passageway, a second tube opened to the exterior of the spout in the vicinity of the discharge end thereof to sense when liquid has reached the discharge end of the spout, the other end of said second tube being in fluid communication with said passageway, said passageway leading from its connection with said selector and second tubes to said control chamber such that when sub-atmospheric pressure exists within the passageway, means connected to the control chamber render the holding means inoperable to permit the valve to close, and including a second valve operable to place only one of said selector or second tubes in communication with said passageway.
Claim 12
Dependent Claim
84 words
A liquid dispensing nozzle according to claim 8, the top of the storage tube being opened to receive the said known proportion of the liquid flowing through the spout, and the selector tube including control means for moving the lower end of the selector tube to different heights within the storage tube, the selected height thus determining the amount of liquid to be delivered into the storage tube, and hence the amount of liquid to be delivered through the spout, before the valve closes.
Claim 13
Dependent Claim
56 words
A liquid dispensing nozzle according to claim 11, and including means connected to the selector tube and extending out of the nozzle to be manually moved to manually move the lower end of the selector tube within the storage tube and hence determine the amount of liquid to flow through the spout before the valve closes.
Claim 14
Dependent Claim
53 words
A liquid dispensing nozzle according to claim 11, including a coin operated means responsive to the quantity of money deposited therein for determining the height of the lower end of the selector tube and hence also determining the height of the liquid to be delivered through the nozzle spout before the valve closes.
Claim 15
Dependent Claim
75 words
A liquid dispensing nozzle according to claim 13, said coin operated means including a casing, a liner within the casing, means for depositing coins through the casing into the liner, the liner being arranged to move downwardly in response to the weight of coins therein, and means connecting the liner with the selector tube such that as the liner moves downwardly, it moves the selector tube bottom upwardly in the storage means a proportionate amount.
Claim 16
Dependent Claim
27 words
A liquid dispensing nozzle according to claim 14, including means for preventing operation of the nozzle until at least some downward movement of the liner has occurred.
Claim 17
Dependent Claim
25 words
A liquid dispensing nozzle according to claim 15, including means for releasing coins from the liner into a fixed receptacle after operation of the nozzle.
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) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |