US4660524A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel supply line
Assignee: Robert Bosch GmbH
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Filing: 1985-03-15
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Granted: 1987-04-28
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Expires: 2005-03-15
Abstract
Abstract A fuel supply line for use with fuel injection devices of internal combustion engines is proposed, having supports to contain fuel injection valves. The fuel supply line has an elastic wall section, with which is connected a rigid wall section and on which are fastened the supports. The elastic wall section is elastic to the extent that it damps the pressure pulsations of the fuel in the fuel supply line, whereas the rigid wall section assures the required rigidity of the fuel supply line.
Inventors
- 👤 Richard Bertsch
- 👤 Dieter Gunther
- 👤 Heinrich Knapp
- 👤 Gunther Plapp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:35
CPC Classifications
F; F02; F02M; F02M69/00; F02M69/46; F02M69/462; F02M69/465; F02M2200/00; F02M2200/31; F02M2200/315
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
132 words
In a fuel supply of a fuel injection device for internal combustion engines having support means for fuel injection valves, the improvement comprising said fuel supply line having at least one thinly-walled section which is formed of an elastic material so pliable that pressure pulsations of the fuel in said fuel supply line are damped, said fuel supply line further having an elastic wall section arranged to extend in a longitudinal direction and a further rigid wall section connected therewith, said support means for said fuel injection valves being fastened to said rigid wall section, said elastic wall section and said rigid wall section forming a rectangle, and said fuel supply line further has a longitudinal direction, a predetermined width, and a height, said width being at least three times said height.
Claim 2
Dependent Claim
132 words
In a fuel supply of a fuel injection device for internal combustion engines having support means for fuel injection valves, the improvement comprising said fuel supply line having at least one thinly-walled section which is formed of an elastic material so pliable that pressure pulsations of the fuel in said fuel supply line are damped, said fuel supply line further having an elastic wall section arranged to extend in a longitudinal direction and a further rigid wall section connected therewith, said support means for said fuel injection valves being fastened to said rigid wall section, said elastic wall section and said rigid wall section forming a rectangle, and said fuel supply line further has a longitudinal direction, a predetermined width, and a height, said width being at least three times said height.
Claim 3
Dependent Claim
122 words
In a fuel supply line of a fuel injection device for internal combustion engines having support means for fuel injection valves, the improvement comprising said fuel supply line having at least one thinly-walled section which is formed of an elastic material so pliable that pressure pulsations of the fuel in said fuel supply line are damped, said fuel supply line further having an elastic wall section arranged to extend in a longitudinal direction and a further rigid wall section connected therewith, said support means for said fuel injection valves being fastened to said rigid wall section, said elastic wall section and said rigid wall section forming a rectangle, and said elastic wall section has portions which partially surround said rigid wall section.
Claim 4
Dependent Claim
122 words
In a fuel supply line of a fuel injection device for internal combustion engines having support means for fuel injection valves, the improvement comprising said fuel supply line having at least one thinly-walled section which is formed of an elastic material so pliable that pressure pulsations of the fuel in said fuel supply line are damped, said fuel supply line further having an elastic wall section arranged to extend in a longitudinal direction and a further rigid wall section connected therewith, said support means for said fuel injection valves being fastened to said rigid wall section, said elastic wall section and said rigid wall section forming a rectangle, and said elastic wall section has portions which partially surround said rigid wall section.
Claim 5
Dependent Claim
117 words
In a fuel supply line of a fuel injection device for internal combustion engines having support means for fuel injection valves, the improvement comprising said fuel supply line having at least one thinly-walled section which is formed of an elastic material so pliable that pressure pulsations of the fuel in said fuel supply line are damped, said fuel supply line further having an elastic wall section arranged to extend in a longitudinal direction and a further rigid wall section connected therewith, said support means for said fuel injection valves being fastened to said rigid wall section and said elastic wall section has a triangular shape in cross-section and said rigid wall section has a rectangularly shaped portion.
Claim 6
Dependent Claim
117 words
In a fuel supply line of a fuel injection device for internal combustion engines having support means for fuel injection valves, the improvement comprising said fuel supply line having at least one thinly-walled section which is formed of an elastic material so pliable that pressure pulsations of the fuel in said fuel supply line are damped, said fuel supply line further having an elastic wall section arranged to extend in a longitudinal direction and a further rigid wall section connected therewith, said support means for said fuel injection valves being fastened to said rigid wall section and said elastic wall section has a triangular shape in cross-section and said rigid wall section has a rectangularly shaped portion.
Claim 7
Dependent Claim
58 words
A fuel supply line of a fuel injection device for internal combustion engines having support mean for fuel injection valves wherein said fuel supply line has at least one thinly-walled traingular section formed of a resilient metallic material, the resiliency of said material allowing pressure pulsations occurring in the fuel in said fuel supply line to be damped.
Claim 8
Dependent Claim
58 words
A fuel supply line of a fuel injection device for internal combustion engines having support mean for fuel injection valves wherein said fuel supply line has at least one thinly-walled traingular section formed of a resilient metallic material, the resiliency of said material allowing pressure pulsations occurring in the fuel in said fuel supply line to be damped.
Claim 9
Dependent Claim
65 words
A fuel supply line of a fuel injection device for internal combustion engines having support means for fuel injection valves wherein a cross-section normal to the longitudinl axis of said fuel supply line including two distinct metallic walls, at least one of which is formed of a resilient material so pliable that pressure pulsations occurring in the fuel in said fuel supply line are damped.
Claim 10
Dependent Claim
65 words
A fuel supply line of a fuel injection device for internal combustion engines having support means for fuel injection valves wherein a cross-section normal to the longitudinl axis of said fuel supply line including two distinct metallic walls, at least one of which is formed of a resilient material so pliable that pressure pulsations occurring in the fuel in said fuel supply line are damped.
Claim 11
Dependent Claim
52 words
A fuel supply line in accordance with claim 5, further wherein said at least one resilient wall is arranged to extend in a longitudinal direction and a further rigid wall section is connected therewith, and said support means for said fuel injection valves associated with said rigid wall section are fastened thereto.
Claim 12
Dependent Claim
23 words
A fuel supply line in accordance with claim 6, further wherein said resilient wall section and said rigid wall section comprise a rectangle.
Claim 13
Dependent Claim
27 words
A fuel supply line in accordance with claim 3, further wherein said elastic wall section is provided with support walls which extend into said rectangularly shaped portion.
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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) | 1990-04-27 | 1990-10-27 | 1991-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-27 | 1994-10-27 | 1995-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-27 | 1998-10-27 | 1999-04-28 | $7700.00 | Window Closed / Lapsed |