US3929109A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leak-off pipe for fuel injection equipment
Assignee: Individual
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Filing: 1974-06-12
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Granted: 1975-12-30
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Expires: 1994-06-12
Abstract
Abstract A pipe assembly of rectangular cross section comprises a pipe extruded from a suitable malleable material. The pipe comprises a wall of non-uniform thickness and a through passageway which is sealed at one end by a plug and is adapted to be connected to a conventional pipe fitting by a screwed fitting at the other end. Transverse holes intersect the through passageway. A banjo bolt passes through the hole and fastens the pipe to a fuel injector. Sealing between the pipe, the injector and the bolt is effected by local deformation of the surface of the pipe. The pipe is suitable for use as a leak-off pipe for fuel injection equipment for returning leaked fuel to a low pressure zone of the fuel system.
Inventors
- 👤 Noel Christopher Chamberlain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:00
CPC Classifications
F; F16; F16L; F16L9/00; F16L9/02; F02; F02M; F02M55/00; F02M55/002; F02M55/004; F02M69/00; F02M69/46; F02M69/462; F02M69/465; F16L55/00; F16L55/10; F16L9/006; F02B; F02B3/00; F02B3/06; F02M55/02; F02M55/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
174 words
A fuel injection manifold having a plurality of injector nozzles comprising a malleable, flexible pipe with a plurality of holes therein normal to the longitudinal axis of said pipe, opposing walls on said pipe having substantially plane and parallel surfaces normal to the holes in said pipe, side walls on said pipe to enclose and form a passage for conveying fluid and intersecting the holes of said pipe, a cross section for said opposing walls of a thickness relative to the size of said passage to permit local deformation of the malleable material under a load applied normal thereto and intersecting the passage, a corresponding plurality of bolts having conduits therein to permit fluid communication with the passage of said pipe when said bolts are inserted in the holes therein, said bolts fastening to said injector nozzles with said pipe therebetween to provide a load normal to said plane surfaces to fluidly seal said bolt with said pipe and said pipe with said injector nozzles by deformation of the malleable material of said pipe.
Claim 2
Dependent Claim
174 words
A fuel injection manifold having a plurality of injector nozzles comprising a malleable, flexible pipe with a plurality of holes therein normal to the longitudinal axis of said pipe, opposing walls on said pipe having substantially plane and parallel surfaces normal to the holes in said pipe, side walls on said pipe to enclose and form a passage for conveying fluid and intersecting the holes of said pipe, a cross section for said opposing walls of a thickness relative to the size of said passage to permit local deformation of the malleable material under a load applied normal thereto and intersecting the passage, a corresponding plurality of bolts having conduits therein to permit fluid communication with the passage of said pipe when said bolts are inserted in the holes therein, said bolts fastening to said injector nozzles with said pipe therebetween to provide a load normal to said plane surfaces to fluidly seal said bolt with said pipe and said pipe with said injector nozzles by deformation of the malleable material of said pipe.
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) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |