Patent US3774656A successfully refreshed from Google Patents.
US3774656A
Expired / Lapsed
US
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Automatic fuel dispensing nozzle
Assignee: Texaco Inc
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Filing: 1971-09-15
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Granted: 1973-11-27
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Expires: 1991-09-15
Abstract
Abstract An automatic fuel dispensing nozzle involving an improvement upon U.S. Pat. No. 3,586,071 in which the timed delay between the full flow and topping-off flow operations is effected by means of a dash-pot system normally kept full by a flow of fuel which shuts off during the operation of the dash-pot and thereafter controlledly released.
Inventors
- 👤 E Mayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:08
CPC Classifications
B; B67; B67D; B67D7/00; B67D7/06; B67D7/42; B67D7/44; B67D7/46; B67D7/48
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
203 words
In an automatic nozzle for dispensing a liquid fuel, and including a body communicated with a fuel supply conduit which terminates at a filler spout (49), a main flow control valve (6), and a flow regulating valve (32), the latter being movable between a full flow position and a restricted flow position, first (87) and second (90) vacuum responsive release means connected to said main control valve (6) and said flow regulating valve (32) respectively, pressure sensing means (23) responsive to a surge of fluid about said filler spout (49) for creating a vacuum impulse, and signal valve means (30, 79, 80) communicated with said pressure sensing means (23) for directing an initial vacuum impulse to said second vacuum responsive release means (90) whereby to actuate flow regulating valve (32) to the flow restricting position, and for directing a subsequent vacuum impulse into said first vacuum responsive release means (87), whereby to close said main control valve (6); the improvement in said nozzle which comprises dash pot means (66) operably connected to said flow regulating valve (32) whereby to delay movement of said valve (32) for a desired time period while the latter adjusts from the full flow, to the restricted flow position.
Claim 2
Dependent Claim
203 words
In an automatic nozzle for dispensing a liquid fuel, and including a body communicated with a fuel supply conduit which terminates at a filler spout (49), a main flow control valve (6), and a flow regulating valve (32), the latter being movable between a full flow position and a restricted flow position, first (87) and second (90) vacuum responsive release means connected to said main control valve (6) and said flow regulating valve (32) respectively, pressure sensing means (23) responsive to a surge of fluid about said filler spout (49) for creating a vacuum impulse, and signal valve means (30, 79, 80) communicated with said pressure sensing means (23) for directing an initial vacuum impulse to said second vacuum responsive release means (90) whereby to actuate flow regulating valve (32) to the flow restricting position, and for directing a subsequent vacuum impulse into said first vacuum responsive release means (87), whereby to close said main control valve (6); the improvement in said nozzle which comprises dash pot means (66) operably connected to said flow regulating valve (32) whereby to delay movement of said valve (32) for a desired time period while the latter adjusts from the full flow, to the restricted flow position.
Claim 3
Dependent Claim
55 words
In a nozzle as defined in claim 1, wherein said dash pot means (66) includes a dash pot passage means (62, 63, 64) formed therein and communicated with said flow regulating valve (32), whereby to maintain fuel flow into said dash pot passage means when said flow regulating valve is in the full flow position.
Claim 4
Dependent Claim
45 words
In a nozzle as defined in claim 2, wherein said dash pot passage means (62, 63, 64) includes sealing means (67) therein, adapted to prevent fuel flow into said dash pot means (66) when said valve (32) commences movement toward the restricted flow positIon thereof.
Claim 5
Dependent Claim
61 words
In a nozzle as defined in claim 3, wherein said seal means (67) is carried on an elongated rod (53) and positioned in said dash pot passage means (62, 63, 64) to engage said flow regulating valve (32) and prevent flow of fuel through said passage means (62, 63, 64) when said valve (32) is urged toward the restricted flow position.
Claim 6
Dependent Claim
47 words
In a nozzle as defined in claim 2, wherein said dash pot passage means (62, 63, 64) is communicated with the upstream side of said valve (32) to receive fuel flow concurrently with the latter, only when said valve (32) is disposed in the full flow position.
Claim 7
Dependent Claim
69 words
In a nozzle as defined in claim 1, wherein said dash pot means includes a chamber (66) having a movable diaphragm (58) operably connected to said flow valve (32), said diaphragm (58) being displaceable in response to movement of said flow regulating valve (32) whereby to urge liquid fuel from said chamber (66), through a constricted passage to restrain movement of said valve (32) toward the restricted flow position.
Claim 8
Dependent Claim
41 words
In a nozzle as defined in cliam 6, wherein said dash pot means (66) includes an elongated rod (53) operably connected at one end thereof to said flow regulating valve (32), and fixed at the other end to said diaphragm (58).
Claim 9
Dependent Claim
41 words
In a nozzle as defined in cliam 6, wherein said dash pot means (66) includes an elongated rod (53) operably connected at one end thereof to said flow regulating valve (32), and fixed at the other end to said diaphragm (58).
Claim 10
Dependent Claim
41 words
In a nozzle as defined in claim 1, wherein said dash pot means (66) includes; a chamber (66) defined by displaceable diaphragm (58) forming a wall thereof, and a constricted passage (68) communicating said chamber (66) with said filler spout (49).
Claim 11
Dependent Claim
65 words
In a nozzle as defined in claim 1, including relief valve means (71) communicated with said dash pot means (66), and being normally in a closed position to prevent liquid flow from said means (66), said valve (71) being actuable to an open position whereby to relieve pressure within said dash pot means (66) when said flow regulating valve (32) reaches the restricted flow position.
Claim 12
Dependent Claim
73 words
In a nozzle as defined in claim 1, wherein said signal valve means (30, 79, 80) includes; a plunger (82) operably connected at one end thereof with said valve means (79) and (80) respectively, and at the other end with said flow regulating valve (32), whereby to sequentially actuate said respective valves (79 and 80) in response to movement of said valve (32) between the full flow and the restricted flow positions thereof.
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) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |