Liquid dispensing windshield washer pump

Details Liquid dispensing windshield washer pump Liquid dispensing windshield washer pump

1977-12-12

1980-01-01

Croyle, Carlton R.

Pumps

Motor driven

Resiliently mounted pump or motor

310 91, 417410, 418154, F04B 1700

Patent

active

041814720

ABSTRACT:
A liquid dispensing pump of the motor-driven flexible vane impeller type suitable for use in an automobile windshield washer system includes a housing that defines a motor chamber having a motor supporting end wall. A closure wall is fixed to the end wall and an impeller chamber having a peripheral surface is defined between the walls. An impeller is rotatable in the impeller chamber by a motor supported in the motor chamber, which has a shaft that extends through an opening in the end housing wall. Inlet and outlet passages respectively conduct liquid to and from the impeller chamber. This pump further comprises the improvement that the impeller chamber is constituted by confronting recesses, formed in the closure and end walls, that are circumferentially bounded by portions of the walls that have confronting surfaces meeting at a tight interface. The interface bounds the peripheral impeller chamber surface. In addition, the motor chamber is closed by a cover plate fastened to an end of the housing opposite the end wall. A spring is compressed between the cover plate and motor body to hold the motor body non-rotatably in working position against the end wall.

REFERENCES:
patent: 1809603 (1931-06-01), Reed
patent: 2387533 (1945-10-01), Schmucker
patent: 2974767 (1961-03-01), Fulton
patent: 3179058 (1965-04-01), Meagher
patent: 3183842 (1965-05-01), Sadler et al.
patent: 3256828 (1966-06-01), Rule
patent: 3264999 (1966-08-01), Tutthill
patent: 3303791 (1967-02-01), Doble
patent: 3407747 (1968-10-01), Rule
patent: 3666219 (1972-05-01), Baus
patent: 3829248 (1974-08-01), Bright et al.
patent: 3861831 (1975-01-01), Rule

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