Center valve sleeve retention system for an oscillating pump

Details Center valve sleeve retention system for an oscillating pump Center valve sleeve retention system for an oscillating pump

2005-11-01

2005-11-01

Thorpe, Timothy S. (Department: 3746)

Pumps

Motor driven

Electric or magnetic motor

C417S412000, C417S416000, C417S417000, C417S472000, C417S550000, C417S567000, C417S562000, C417S555100

Reexamination Certificate

active

06960068

ABSTRACT:
A pump (10) includes an impeller (12) positioned in a housing (11). A valve assembly (13) is positioned within a valve sleeve (25) which is carried by the impeller (12). The impeller (12) is carried by an armature (27), and a pocket (28) is formed between the impeller (12) and the armature (27) adjacent to the valve sleeve (25). One or more elastomeric members (29) are positioned in the pocket (28) to surround the impeller (12) at the area of the valve sleeve (25) to provide a retaining force on the valve sleeve (25).

REFERENCES:
patent: 3136257 (1964-06-01), Smith et al.
patent: 4824337 (1989-04-01), Lindner et al.
patent: 5147281 (1992-09-01), Thornton et al.
patent: 5266012 (1993-11-01), Hashimoto et al.
patent: 5915930 (1999-06-01), McNaull
patent: 6012910 (2000-01-01), McNaull

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