Fuel pump having improved shaft/impeller coupling

Details Fuel pump having improved shaft/impeller coupling Fuel pump having improved shaft/impeller coupling

1989-05-08

1990-09-25

Garrett, Robert E.

Rotary kinetic fluid motors or pumps

With means for re-entry of working fluid to blade set

Turbine regenerative pump

416204R, 416204A, 403355, F04D 2918, F04D 2920

Patent

active

049589849

ABSTRACT:
A circular hole through which a main shaft of a fuel pump is inserted is defined at the central portion of an impeller, one or plural pin holes are so defined around the circular hole that the centroidal position is not deviated from the rotational central axis, a first engaging portion is formed at an end of the main shaft to be inserted into the impeller, and a coupler provided with a second engaging portion which engages with the first engaging portion and a pin or pins to be inserted into the pin holes is used to secure the impeller to the main shaft. These members are so arranged that the impeller and the coupler are located respectively in point or line symmetry with respect to the rotational central axis of the armature in the pump or the main shaft, i.e. the respective centers of gravity of the main shaft, impeller and coupler are positioned on the rotational central axis of the armature in the pump so that the armature keeps its balance.

REFERENCES:
patent: 483394 (1892-09-01), Seelye
patent: 1768243 (1930-06-01), Ferguson
patent: 1840148 (1932-01-01), Berry
patent: 2269429 (1942-01-01), Brenkert
patent: 2614501 (1952-10-01), Baker
patent: 3111904 (1963-11-01), Burns
patent: 3233551 (1966-02-01), Oshima
patent: 3947149 (1976-03-01), Macmanus
patent: 4715777 (1987-12-01), Tuckey

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