Windscreen washer pump for vehicle

Details Windscreen washer pump for vehicle Windscreen washer pump for vehicle

1990-07-26

1991-12-10

Look, Edward K.

Rotary kinetic fluid motors or pumps

Selectively adjustable vane or working fluid control means

Upstream of runner

415144, F01D 130, F03B 104

Patent

active

050713159

ABSTRACT:
A pump used to selectively force-feed under pressure washer fluid to the front and rear windscreens of a vehicle according to the rotation of an impeller in either one or other direction. A bypass flow passage for taking out part of the washer fluid, which is forcibly fed under pressure by means of the impeller, is formed upon supply of the washer fluid to the rear windscreen. Thus, the washer fluid delivered to the front windscreen and that delivered to the rear windscreen are different in the delivery rate.

REFERENCES:
patent: 926748 (1909-07-01), Kelly
patent: 4284386 (1981-08-01), Hudson
patent: 4650404 (1987-03-01), Kusakawa
patent: 4679983 (1987-07-01), Pietryk et al.
patent: 4838488 (1989-06-01), Heier et al.
patent: 4900235 (1990-02-01), Perkins et al.
patent: 4919591 (1990-04-01), Kamimura

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