US PATENT SUBCLASS 123 / 501
.~.~ Variable beginning of pumping stroke

Current as of: June, 1999
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123 /   HD   INTERNAL-COMBUSTION ENGINES

434  DF  CHARGE FORMING DEVICE (E.G., POLLUTION CONTROL) {29}
495  DF  .~ With fuel pump {11}
501.~.~ Variable beginning of pumping stroke {1}
502  DF  .~.~.~> Fluid pressure control

DEFINITION

Classification: 123/501

Variable beginning of pumping stroke:

(under subclass 495) Subject matter wherein the pump has a working member having constant length strokes and a control means to vary the point during the travel of the working member pumping stroke where pumping action will begin.

(1) Note. Control means may vary the angular relationship between pump drive shaft and the driven shaft powered by the engine to control timing.