Water pump for cooling engine

Details Water pump for cooling engine Water pump for cooling engine

2006-10-03

2006-10-03

Look, Edward K. (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Specific working member mount

Adjustable

C416S24500R, C123S041470

Reexamination Certificate

active

07114926

ABSTRACT:
A water pump for cooling an engine in which an impeller accommodated in a pump housing provided on an engine body is mounted on an end of a rotational shaft rotatably supported on the pump housing for enhancing the reliability of the mounting strength of the impeller while avoiding an increase in cost. A fitting recess for fitting an end of the rotational shaft having an outer circumferential surface which is straight in an axial direction at least in a portion on the impeller side is provided in a central portion of the impeller. A bolt inserted into the central portion of the impeller is threaded in a coaxial direction with the end of the rotational shaft in a state that is fitted in the fitting recess.

REFERENCES:
patent: 4257744 (1981-03-01), Watson
patent: 4530313 (1985-07-01), Zaremba
patent: 6523627 (2003-02-01), Fukuda
patent: 2000-88056 (2000-03-01), None

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