Lightweight sleeve and spool arrangement for use in diaphragm pu

Details Lightweight sleeve and spool arrangement for use in diaphragm pu Lightweight sleeve and spool arrangement for use in diaphragm pu

1999-01-13

2000-07-11

Michalsky, Gerald A.

Fluid handling

Systems

Multi-way valve unit

251368, F15B 1304

Patent

active

060857897

ABSTRACT:
The present invention provides a lightweight sleeve and spool arrangement for use in certain pumps. Such lightweight sleeve and spool arrangement comprises a sleeve having a predetermined number of apertures and having a predetermined interior diameter. The sleeve is formed from a first predetermined plastic material selected from a group consisting of nylons, acetals, polysulfones, polyesters, polyetherimides and polyamide-imines. There is also a spool that has a predetermined configuration and a predetermined exterior diameter. Such predetermined exterior diameter being about 0.0005 inches smaller than the predetermined interior diameter of such sleeve. The spool is formed from a second predetermined plastic material selected from a group consisting of nylons, acetals, polysulfones, polyesters, polyetherimides and polyamide-imines.

REFERENCES:
patent: 5248126 (1993-09-01), Pruss et al.

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