Patent US3841565A successfully refreshed from Google Patents.
US3841565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Injectors for injecting a liquid, in particular a fuel, into a high temperature space such as a combustion chamber
Assignee: Safran Aircraft Engines SAS
•
Filing: 1973-07-20
•
Granted: 1974-10-15
•
Expires: 1993-07-20
Abstract
Abstract A liquid injection manifold, in particular for fuel, comprising a tube containing at least one row of injection ports, wherein said tube is divided by a twisted longitudinal partition into two passages through which the liquid introduced by a feed pipe flows along the whole of the manifold and is applied by centrifugal force against the wall of said manifold.
Inventors
- 👤 M Buisson
- 👤 C Foure
- 👤 A Lacroix
- 👤 H Quillevere
- 👤 G Rousseau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:59
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/28; F02; F02K; F02K9/00; F02K9/42; F02K9/44; F02K9/52
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
99 words
A liquid manifold, in particular for fuel, comprising a tube containing at least one row of injection ports, said tube being divided by a twisted longitudinal partition into two passages through which the liquid entering the manifold flows along the whole of the manifold and is urged by centrifugal force against the wall of said manifold, one of the passages comprising a supply passage in which the liquid flows in one direction and the other a return passage in which the liquid flows in the opposite direction, said return passage communicating with at least some of the injection ports.
Claim 2
Dependent Claim
99 words
A liquid manifold, in particular for fuel, comprising a tube containing at least one row of injection ports, said tube being divided by a twisted longitudinal partition into two passages through which the liquid entering the manifold flows along the whole of the manifold and is urged by centrifugal force against the wall of said manifold, one of the passages comprising a supply passage in which the liquid flows in one direction and the other a return passage in which the liquid flows in the opposite direction, said return passage communicating with at least some of the injection ports.
Claim 3
Dependent Claim
44 words
A manifold as claimed in claim 1, in which the return passage is closed adjacent the liquid entry end of the manifold and the partition short of the other end of the manifold to enable said return passage to communicate with said supply passage.
Claim 4
Dependent Claim
19 words
A manifold as claimed in claim 2, in which the supply passage cummunicates with some of the injection ports.
Claim 5
Dependent Claim
18 words
A manifold as claimed in claim 2, in which the return passage communicates with all the injection ports.
Claim 6
Dependent Claim
18 words
A manifold as claimed in claim 1, in which the partition is constituted by a twisted metal strip.
Claim 7
Dependent Claim
22 words
A manifold as claimed in claim 1, in which the partition comprises two diametrally opposite strips wound helically about a central body.
Claim 8
Dependent Claim
136 words
A liquid manifold, in particular for fuel, comprising a tube having an inlet end, a closed end, and a tubular wall having a plurality of injection ports therethrough arranged in spaced relation along a line parallel to the tube centerline; means for feeding the inlet end with liquid to form a flow of liquid in the tube; and a twisted longitudinal partition within said tube and dividing the same into first and second passages extending from an upstream end to a downstream end spaced from said closed end; the spacing of the injection ports in said tubular wall being such that said plurality of ports comprise first and second series of ports in communication with said first and second passages respectively, and at least one further injection port through the tubular wall beyond said downstream end.
Claim 9
Dependent Claim
136 words
A liquid manifold, in particular for fuel, comprising a tube having an inlet end, a closed end, and a tubular wall having a plurality of injection ports therethrough arranged in spaced relation along a line parallel to the tube centerline; means for feeding the inlet end with liquid to form a flow of liquid in the tube; and a twisted longitudinal partition within said tube and dividing the same into first and second passages extending from an upstream end to a downstream end spaced from said closed end; the spacing of the injection ports in said tubular wall being such that said plurality of ports comprise first and second series of ports in communication with said first and second passages respectively, and at least one further injection port through the tubular wall beyond said downstream end.
Claim 10
Dependent Claim
19 words
A manifold according to claim 7 in which the partition is in the form of a twisted metal strip.
Claim 11
Dependent Claim
21 words
A manifold according to claim 7 in which the partition comprises two diametrically opposite strips wound helically about a central body.
References Cited (Backward Citations)
US943882A
Cited
US2840151A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |