US3655059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
In-line fuel flow restricting and filter assembly
Assignee: Individual
•
Filing: 1970-05-14
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Granted: 1972-04-11
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Expires: 1990-05-14
Abstract
Abstract A tubular body adapted to be interposed in a fuel flow line and having a passage formed longitudinally therethrough. A midportion of the passage within the body has a flow restrictive zone for reducing fluid pressure pulses and the tubular body includes a zone of increased cross-sectional area intermediate the inlet end of the passage and the flow restrictive zone of the passage for further reducing fluid pressure pulses. Also, one form of the invention provides a pair of spaced flow restrictive zones intermediate the inlet and outlet ends of the passage with the zone of increased cross-sectional area disposed between the pair of flow restrictive zones. Finally, each of the tubular bodies has a filter body through which fuel flowing through the tubular body must pass and a check valved air inlet for ambient air is provided and has its outlet end disposed in position subject to reduced fluid pressures in response to fuel flow through the tubular body.
Inventors
- 👤 Arthur O Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:23
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/02; F; F02; F02M; F02M37/00; F02M37/22; F02M37/32; F02M37/46
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
97 words
A tubular body defining a flow passage extending therethrough including small diameter inlet and outlet ends and an intermediate portion of considerably greater cross-sectional area than both of said inlet and outlet ends, said body further including means defining a flow restrictive zone intermediate said inlet and outlet ends of appreciably smaller cross-sectional area than either of said inlet and outlet ends, and small diameter check valved bleed air inlet means opening into said outlet end in a downstream direction for drawing ambient air into said outlet end in response to rapid fluid flow through said passage.
Claim 2
Dependent Claim
97 words
A tubular body defining a flow passage extending therethrough including small diameter inlet and outlet ends and an intermediate portion of considerably greater cross-sectional area than both of said inlet and outlet ends, said body further including means defining a flow restrictive zone intermediate said inlet and outlet ends of appreciably smaller cross-sectional area than either of said inlet and outlet ends, and small diameter check valved bleed air inlet means opening into said outlet end in a downstream direction for drawing ambient air into said outlet end in response to rapid fluid flow through said passage.
Claim 3
Dependent Claim
18 words
The combination of claim 1 wherein said body includes filter means for filtering liquids flowing through said passage.
Claim 4
Dependent Claim
20 words
The combination of claim 1 wherein said zone of flow restriction is disposed between said passage and said outlet end.
Claim 5
Dependent Claim
37 words
The combination of claim 1 wherein said tubular body includes means defining a second flow restrictive zone, the first-mentioned zone communicating said inlet end with said passage and the second-mentioned zone communicating said passage said outlet end.
Claim 6
Dependent Claim
50 words
The combination of claim 4 wherein said body comprises an elongated tube about whose mid-portion a generally cylindrical hollow member provided with apertured eNd walls is sealingly secured with the opposite ends of said tube extending through the apertures in said end walls and defining said inlet and outlet ends.
Claim 7
Dependent Claim
60 words
The combination of claim 5 wherein the central portion of the section of said tube disposed within said hollow member is closed to the passage of fluids therethrough, a pair of small diameter openings formed in said tube within said hollow member and on opposite sides of said closed central portion of said tube and comprising said flow restrictive zones.
Claim 8
Dependent Claim
18 words
The combination of claim 6 wherein said body includes filter means for filtering liquids flowing through said passage.
Claim 9
Dependent Claim
50 words
The combination of claim 7 wherein said filter means comprises a tubular filter body encircling said tube within said hollow member and whose opposite ends are closed relative to said tube at locations axially spaced in the same direction along said tube relative to said pair of small diameter openings.
Claim 10
Dependent Claim
27 words
The combination of claim 1 including a partition type filter body in said intermediate portion disposed transverse to the direction of fluid flow through said intermediate portion.
Claim 11
Dependent Claim
31 words
The combination of claim 1 wherein said body includes a pair of axially spaced opposite end generally cylindrical body sections opening toward each other and removably joined at their adjacent ends.
Claim 12
Dependent Claim
115 words
A tubular body defining a flow passage extending therethrough including small diameter inlet and outlet means and an intermediate portion of considerably greater cross-sectional area than both of said inlet and outlet ends, said body further including means defining a flow restrictive zone intermediate said inlet and outlet ends of appreciably small cross-sectional area than other of said inlet and outlet ends, said tubular body comprising a pipe section provided with threaded opposite ends with which end wall forming members are threadedly engaged, said end wall forming members having flow openings formed therethrough defining said inlet and outlet ends, the interior of said pipe section between said end wall forming members defining said intermediate portion.
Claim 13
Dependent Claim
115 words
A tubular body defining a flow passage extending therethrough including small diameter inlet and outlet means and an intermediate portion of considerably greater cross-sectional area than both of said inlet and outlet ends, said body further including means defining a flow restrictive zone intermediate said inlet and outlet ends of appreciably small cross-sectional area than other of said inlet and outlet ends, said tubular body comprising a pipe section provided with threaded opposite ends with which end wall forming members are threadedly engaged, said end wall forming members having flow openings formed therethrough defining said inlet and outlet ends, the interior of said pipe section between said end wall forming members defining said intermediate portion.
Claim 14
Dependent Claim
117 words
A tubular body defining a flow passage extending therethrough including small diameter inlet and outlet ends and an intermediate portion of considerably greater cross-sectional area than both of said inlet and outlet ends, said body further including means defining a flow restrictive zone intermediate said inlet and outlet ends of appreciably small cross-sectional area than either of said inlet and outlet ends, ambient bleed air inlet means defining an air inlet passage including inlet and outlet end portions, said inlet end portion including check valve means and opening outwardly of said body and said outlet end portions opening into said outlet end in a downstream direction, said outlet end portion being disposed in said flow restrictive zone.
Claim 15
Dependent Claim
117 words
A tubular body defining a flow passage extending therethrough including small diameter inlet and outlet ends and an intermediate portion of considerably greater cross-sectional area than both of said inlet and outlet ends, said body further including means defining a flow restrictive zone intermediate said inlet and outlet ends of appreciably small cross-sectional area than either of said inlet and outlet ends, ambient bleed air inlet means defining an air inlet passage including inlet and outlet end portions, said inlet end portion including check valve means and opening outwardly of said body and said outlet end portions opening into said outlet end in a downstream direction, said outlet end portion being disposed in said flow restrictive zone.
Claim 16
Dependent Claim
121 words
A tubular body defining a flow passage extending therethrough including small diameter inlet and outlet ends and an intermediate portion of considerably greater cross-sectional area than both of said inlet and outlet ends, said body further including means defining a flow restrictive zone intermediate said inlet and outlet ends of appreciably smaller cross-sectional area than either of said inlet and outlet ends, ambient bleed air inlet means defining an air inlet passage including inlet and outlet end portions, said inlet end portion including check valve means and opening outwardly of said body and said outlet end portions opening into said outlet end in a downstream direction, said outlet end portion opening into said outlet portion downstream from said flow restrictive zone.
Claim 17
Dependent Claim
121 words
A tubular body defining a flow passage extending therethrough including small diameter inlet and outlet ends and an intermediate portion of considerably greater cross-sectional area than both of said inlet and outlet ends, said body further including means defining a flow restrictive zone intermediate said inlet and outlet ends of appreciably smaller cross-sectional area than either of said inlet and outlet ends, ambient bleed air inlet means defining an air inlet passage including inlet and outlet end portions, said inlet end portion including check valve means and opening outwardly of said body and said outlet end portions opening into said outlet end in a downstream direction, said outlet end portion opening into said outlet portion downstream from said flow restrictive zone.
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) | 1975-04-11 | 1975-10-11 | 1976-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-11 | 1979-10-11 | 1980-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-11 | 1983-10-11 | 1984-04-11 | $7700.00 | Window Closed / Lapsed |