Patent US3765388A successfully refreshed from Google Patents.
US3765388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixture control for fuel injection pumps
Assignee: Individual
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Filing: 1971-05-13
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Granted: 1973-10-16
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Expires: 1991-05-13
Abstract
Abstract Mixture control mechanism for lever-type, variable-stroke fuel injection pumps having a power fulcrum. The stroke of the pump is adjustably reduced by increasing the clearance at the power fulcrum. In a pump having primary and secondary levers, the position of the pivotal support of the secondary lever is adjusted. In a pump having one lever and a fulcrum slide member, the position of one of the supports for the fulcrum slide member is adjusted.
Inventors
- 👤 R Durham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:35
CPC Classifications
F; F02; F02M; F02M59/00; F02M59/20; F02M59/30
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
124 words
A fuel injection pump comprising: an engine-driven eccentric; a primary lever having two ends and engaging said eccentric at one end, and being pivotally supported at its other end by a semi-permanent support; a reciprocable pump element; a secondary lever having two ends and engaging said pump element at one of said ends; a power fulcrum positioned according to fuel requirements of the engine, said power fulcrum adaptable for periodically engaging said primary and secondary levers; a pair of supplementary fulcra engaging said secondary lever during a portion of each cycle; wherein the improvement comprises an adjustable pivotal support means engaging said other end of said secondary lever, whereby the clearance between said power fulcrum and said primary and secondary levers can be adjusted.
Claim 2
Dependent Claim
124 words
A fuel injection pump comprising: an engine-driven eccentric; a primary lever having two ends and engaging said eccentric at one end, and being pivotally supported at its other end by a semi-permanent support; a reciprocable pump element; a secondary lever having two ends and engaging said pump element at one of said ends; a power fulcrum positioned according to fuel requirements of the engine, said power fulcrum adaptable for periodically engaging said primary and secondary levers; a pair of supplementary fulcra engaging said secondary lever during a portion of each cycle; wherein the improvement comprises an adjustable pivotal support means engaging said other end of said secondary lever, whereby the clearance between said power fulcrum and said primary and secondary levers can be adjusted.
Claim 3
Dependent Claim
52 words
Apparatus according to claim 1 wherein said adjustable pivotal support means comprises a movable, sloping mixture control slide, and a slidable support pin means, said support pin means adaptable at one of its ends for pivotally supporting said secondary lever, and adaptable at its other end for engaging said mixture control slide.
Claim 4
Dependent Claim
27 words
Apparatus according to claim 1 wherein said adjustable pivotal support means comprises a mixture control cam adaptable for pivotally supporting said other end of said secondary lever.
Claim 5
Dependent Claim
28 words
Apparatus according to claim 1 wherein said adjustable pivotal support means comprises a mixture control screw means adaptable for pivotally supporting said other end of said secondary lever.
Claim 6
Dependent Claim
27 words
Apparatus according to claim 1 wherein said adjustable pivotal support means comprises a conical screw means adaptable for pivotally supporting said other end of said secondary lever.
Claim 7
Dependent Claim
125 words
A fuel injection pump comprising: a pump element; a lever having two ends, one of said ends engaging said pump element; an engine-driven eccentric engaging said other end of said lever; a fulcrum slide member having two ends, a fulcrum guide slot, and a pair of supplementary fulcra engaging said lever intermediate said pump element and said eccentric; a power fulcrum positioNed according to fuel requirements of the engine, said power fulcrum adaptable for periodically engaging said lever and said fulcrum slide member; a semi-permanent pivotal support engaging one end of said fulcrum slide member; wherein the improvement comprises an adjustable pivotal support means adaptable for engaging the other end of said fulcrum slide member whereby the clearance at said power fulcrum can be adjusted.
Claim 8
Dependent Claim
125 words
A fuel injection pump comprising: a pump element; a lever having two ends, one of said ends engaging said pump element; an engine-driven eccentric engaging said other end of said lever; a fulcrum slide member having two ends, a fulcrum guide slot, and a pair of supplementary fulcra engaging said lever intermediate said pump element and said eccentric; a power fulcrum positioNed according to fuel requirements of the engine, said power fulcrum adaptable for periodically engaging said lever and said fulcrum slide member; a semi-permanent pivotal support engaging one end of said fulcrum slide member; wherein the improvement comprises an adjustable pivotal support means adaptable for engaging the other end of said fulcrum slide member whereby the clearance at said power fulcrum can be adjusted.
Claim 9
Dependent Claim
25 words
Apparatus according to claim 6 wherein said adjustable pivotal support means comprises a mixture control cam adaptable for supporting said other end of said lever.
Claim 10
Dependent Claim
27 words
Apparatus according to claim 6 wherein said adjustable pivotal support means comprises a mixture control screw means adaptable for pivotally supporting said other end of said lever.
Claim 11
Dependent Claim
54 words
Apparatus according to claim 6 wherein said adjustable pivotal support means comprises a movable, sloping mixture control slide, and a slidable support pin means, said slidable support pin means adaptable at one of its ends for pivotally supporting said fulcrum slide member, and adaptable at its other end for engaging said mixture control slide.
Claim 12
Dependent Claim
29 words
Apparatus according to claim 6 wherein said adjustable pivotal support means comprises a conical mixture control screw adaptable for pivotally supporting said other end of said fulcrum slide member.
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) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |