Motor type fuel pump

Details Motor type fuel pump Motor type fuel pump

1986-09-29

1988-10-18

Croyle, Carlton R.

Pumps

Motor driven

Including means utilizing pump fluid for augmenting cooling,...

41742314, F04B 1700

Patent

active

047783540

ABSTRACT:
A motor type fuel pump includes an armature housing made of a substantially cylindrical plastic member whose upper end is closed, and a pump chamber housing accommodating a impeller rotated by the armature and defining a pump chamber. The armature housing is adapted to accommodate motor components including an armature, a commutator, a cylindrical stator device consisting of a permanent magnet and a yoke. The armature housing has a plurality of ribs formed at predetermined angular intervals on an inner surface of the armature housing and extending along the longitudinal direction of the armature housing. The plurality of ribs are fitted on the yoke of the stator device. Fuel is supplied through a plurality of arcuated grooves which are defined by the outer surface of the yoke, the inner wall surface of the armature housing, and the ribs.

REFERENCES:
patent: 1974183 (1934-09-01), Gunderson
patent: 2321126 (1943-06-01), Breuer
patent: 2612843 (1952-10-01), Gruetjen
patent: 3764236 (1973-10-01), Carter
patent: 4177021 (1979-12-01), Niedermeyer
Japanese Utility Model Laid-Open Specification No. sho 50-96202.
Japanese Utility Model Publication No. sho 52-35521.
Japanese Patent Laid-Open Specification No. sho 58-160545.

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