US3726263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid fuel pumping apparatus
Assignee: Individual
•
Filing: 1971-03-15
•
Granted: 1973-04-10
•
Expires: 1991-03-15
Abstract
Abstract A liquid fuel pumping apparatus including a shuttle the excursion of which determines the maximum quantity of fuel which can be supplied to an engine, the extent of outward movement of the shuttle being omitted by a stop in the form of a piece having a contoured surface, the stop being mounted in a fluid pressure operable piston. The position of the piston depends upon the speed at which the apparatus is driven. In addition the setting of the piece is determined by axially movable member the axial position of which is determined by a diaphragm to which is applied air under pressure from the inlet manifold of the associated engine.
Inventors
- 👤 K Kemp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:50
CPC Classifications
F; F02; F02M; F02M41/00; F02M41/08; F02M41/14; F02M41/1405; F02M41/1411; F02M41/1427; F02D; F02D1/00; F02D1/02; F02D1/06; F02D1/065; F02M2041/1438; F02M2041/1455; F02M2041/1472
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
194 words
A liquid fuel pumping apparatus for supplying fuel to internal combustion engines and compressing a cylinder, a shuttle movable within the cylinder, an injection pump to which fuel is supplied from the cylinder by movement of the shuttle therein, the maximum quantity of fuel which will be supplied by the apparatus being determined by the allowed excursion of the shuttle in the cylinder, a piston slidable within a further cylinder, means for altering the position of the piston in accordance with the speed of operation of the engine, an adjustable piece mounted within the piston, a contoured surface defined on said piece and presented to the shuttle, said surface constituting a stop for the shuttle whereby as the piston moves the allowed excursion of the shuttle will vary, the apparatus being characterized by a pin one end of which is engaged with the piece on the side thereof removed from the shuttle, a slidable member, said pin bearing at its other end, upon a contoured surface on the slidable member, and pressure responsive means to effect adjustment of the member in accordance with the pressure existing in the air inlet manifold of the engine.
Claim 2
Dependent Claim
194 words
A liquid fuel pumping apparatus for supplying fuel to internal combustion engines and compressing a cylinder, a shuttle movable within the cylinder, an injection pump to which fuel is supplied from the cylinder by movement of the shuttle therein, the maximum quantity of fuel which will be supplied by the apparatus being determined by the allowed excursion of the shuttle in the cylinder, a piston slidable within a further cylinder, means for altering the position of the piston in accordance with the speed of operation of the engine, an adjustable piece mounted within the piston, a contoured surface defined on said piece and presented to the shuttle, said surface constituting a stop for the shuttle whereby as the piston moves the allowed excursion of the shuttle will vary, the apparatus being characterized by a pin one end of which is engaged with the piece on the side thereof removed from the shuttle, a slidable member, said pin bearing at its other end, upon a contoured surface on the slidable member, and pressure responsive means to effect adjustment of the member in accordance with the pressure existing in the air inlet manifold of the engine.
Claim 3
Dependent Claim
17 words
An apparatus as claimed in claim 1 in which said pressure responsive means comprises a rolling diaphragm.
Claim 4
Dependent Claim
68 words
An apparatus as claimed in claim 2 in which said rolling diaphragm acts on said slidable member through the intermediary of a push rod, said push rod being loaded into contact with said slidable member by a first coiled compression spring, and the slidable member being loaded in the opposite direction by a second coiled compression spring, said second coiled compression spring being stronger than said first spring.
Claim 5
Dependent Claim
50 words
An apparatus as claimed in claim 3 in which said slidable member is of cylindrical form, the contoured surface on said slidable member being of tapered cylindrical form, having its axis offset from the axis of the slidable member, means being provided to adjust the angular setting of said member.
References Cited (Backward Citations)
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US2869529A
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US3046963A
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US3219020A
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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) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |