US PATENT SUBCLASS 123 / 500
.~.~ Variable beginning and ending 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}
500.~.~ Variable beginning and ending of pumping stroke

DEFINITION

Classification: 123/500

Variable beginning and ending 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 points during the travel of working member pumping stroke where pumping action will both begin and end.