Liquid pump

Details Liquid pump Liquid pump

2006-11-21

2006-11-21

Stashick, Anthony D. (Department: 3746)

Pumps

Motor driven

Electric or magnetic motor

C417S360000

Reexamination Certificate

active

07137794

ABSTRACT:
A fluid pump, in particular a water pump, has a pump housing (11) that surrounds a pump wheel and a motor housing, connected to the pump housing, in which an electric motor (21) driving the pump wheel is received along with a stator (22) and rotor. For the sake of sealing off the pump from the escape of fluid and sealing off the motor housing from the penetration of fluid, with only one seal, and with assembly of the fluid pump without additional connecting elements, the pump housing (11) has a lower housing part (12) with an annular rib (14) protruding radially outward, and an upper housing part (13) slipped onto the lower housing part (12). Between the free annular face end of the upper housing part (13) and the annular rib (14), there is a sealing ring (15). The motor housing is embodied as a housing pot (26), which with a gripping edge (28) fits over the annular rib (14), sealing ring (15), and part of the upper housing part (13), and is locked to the upper housing part (13), producing an axial clamping force (FIG.3).

REFERENCES:
patent: 3282221 (1966-11-01), Kilbane
patent: 4198191 (1980-04-01), Pierce
patent: 4383799 (1983-05-01), Okano et al.
patent: 4475873 (1984-10-01), Jensen et al.
patent: 4546300 (1985-10-01), Shaikh
patent: 5375971 (1994-12-01), Yu
patent: 19 59 087 (1971-05-01), None
patent: 197 18 027 (1998-11-01), None

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