US5038738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel injection device for internal combustion engines
Assignee: Robert Bosch GmbH
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Filing: 1990-03-02
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Granted: 1991-08-13
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Expires: 2010-03-02
Abstract
Abstract A fuel injection device for internal combustion engines including a fuel distributor which has a plurality of connection fittings with a radially protruding locking collar. A plurality of fuel injection valves embodied as so-called top-feed valves that are inserted in a liquid-tight manner into the connection fitting. For retention of the fuel injection valves these valves are provided with oppositely disposed catch springs which extend parallel to the valve axis and on faces oriented toward one another have a groove and locking protrusion for engaging the locking collar from behind.
Inventors
- 👤 Udo Hafner
- 👤 Peter Romann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:26
CPC Classifications
F; F02; F02M; F02M61/00; F02M61/16; F02M61/168; F02M55/00; F02M55/004; F02M69/00; F02M69/46; F02M69/462; F02M69/465; F02M2200/00; F02M2200/80; F02M2200/803
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
175 words
A fuel injection device for internal combustion engines having a fuel distributor line, said fuel distributor line includes a plurality of connection fittings with a radially protruding locking collar on its end, a plurality of fuel injection valves each of which include a housing (16), each of said injection valves include a connection end having a connection opening which connection end is inserted into a respective connection fitting in a liquid-tight manner, each fuel injection valve (12) is provided with at least two opposing disposed catch springs (14), which extend parallel to the axis of the fuel injection valve (12), each of said catch springs include faces oriented toward one another, each of said faces include corresponding grooves that form a transversely protruding locking protrusion (15) for grasping the locking collar (13) on the connection fitting (11) from behind, and said catch springs (14) including said locking protrusions (15) include a connection end and are injection molded in the form of spring legs (20) integrally with said housing (16) of the fuel injection valves (12).
Claim 2
Dependent Claim
175 words
A fuel injection device for internal combustion engines having a fuel distributor line, said fuel distributor line includes a plurality of connection fittings with a radially protruding locking collar on its end, a plurality of fuel injection valves each of which include a housing (16), each of said injection valves include a connection end having a connection opening which connection end is inserted into a respective connection fitting in a liquid-tight manner, each fuel injection valve (12) is provided with at least two opposing disposed catch springs (14), which extend parallel to the axis of the fuel injection valve (12), each of said catch springs include faces oriented toward one another, each of said faces include corresponding grooves that form a transversely protruding locking protrusion (15) for grasping the locking collar (13) on the connection fitting (11) from behind, and said catch springs (14) including said locking protrusions (15) include a connection end and are injection molded in the form of spring legs (20) integrally with said housing (16) of the fuel injection valves (12).
Claim 3
Dependent Claim
47 words
A fuel injection device as defined by claim 1, in which each of said catch springs have one liftout incline (17) each on their connection end, which extend outward toward the connection end of said injection valve from the leg face oriented toward the opposing catch spring.
Claim 4
Dependent Claim
51 words
A fuel injection device as defined by claim 1, in which said radially protruding locking collar includes two fixation ribs (18, 19) that protrude approximately at a tangent from the locking collar (13), and that at least one catch spring rests between each two fixation ribs (18, 19) substantially without play.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-08-12 | 1995-02-11 | 1995-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-08-12 | 1999-02-11 | 1999-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-08-12 | 2003-02-11 | 2003-08-13 | $7700.00 | Window Closed / Lapsed |