Patent ID: 6085789
Filing Date: 2000-07-11
Classification: F15B,Y10T

Abstract:
A lightweight sleeve and spool arrangement for use in certain pumps, said light weight sleeve and spool arrangement comprising:(a) a sleeve having a predetermined number of apertures and having a predetermined interior diameter, said sleeve being formed from a first predetermined plastic material selected from a group consisting of nylons, acetals, polysulfones, polyesters, polyetherimides and polyamide-imines; and(b) a spool having a predetermined configuration having a predetermined exterior diameter, said predetermined exterior diameter being about 0.0005 inches smaller than said predetermined interior diameter, said spool being formed from a second predetermined plastic material selected from a group consisting of nylons, acetals, polysulfones, polyesters, polyetherimides and polyamide-imines.