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BELLOWS PLUNGERS HAVING ONE OR MORE HELICALLY EXTENDING FEATURES, PUMPS INCLUDING SUCH BELLOWS PLUNGERS, AND RELATED METHODS
BELLOWS PLUNGERS HAVING ONE OR MORE HELICALLY EXTENDING FEATURES, PUMPS INCLUDING SUCH BELLOWS PLUNGERS, AND RELATED METHODS
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机译:波纹管柱塞具有一种或多种螺旋形延伸的特性,包括此类波纹管柱塞的泵及相关方法
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摘要
A pump system includes at least one pressure chamber at least partially defined by a helical bellows plunger comprised of a tubular body, a closed front portion, an open rear portion, and at least one contour extending continuously as a helix, longitudinally from proximate the front portion to proximate the rear portion. Methods for forming a helical bellows plunger include molding the helical bellows plunger using a mold core comprising a helically extending exterior contour and a cooperatively associated mold cavity comprising a helically extending interior contour of substantially a same pitch and configured to align with the helically extending exterior contour of the mold core, introducing a molding material therebetween, curing the molding material, and unscrewing the cured molding material from the mold core. Various configurations of helical bellows plungers are also disclosed.
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