Impeller of motorboat

Details Impeller of motorboat Impeller of motorboat

1994-04-26

1996-04-23

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

Support mounting, carrier or fairing structure

416146R, 416245A, 81461, 8117615, 811242, B63H 120

Patent

active

055097855

ABSTRACT:
A motorboat impeller comprises an axial portion having a through axial hole and having a plurality of blades mounted around the periphery thereof and further having a plurality of retaining slots in the inner wall of the through axial hole. The retaining slots have a predetermined depth and a predetermined length extending from the front end of the axial portion toward the inside of the axial portion along the direction of the axis of the axial portion. A mounting and dismounting element can be disposed in the retaining slots and is provided with a body of a polygonal construction and having a plurality of retaining blocks extending outwards. The retaining blocks are dimensioned to fit into the retaining slots. The body of the mounting and dismounting element can be held firmly with a hand tool to facilitate the turning of the axial portion.

REFERENCES:
patent: 1674543 (1928-06-01), Clifton
patent: 2605850 (1952-08-01), Kiekhaefer
patent: 3904301 (1975-09-01), Schroeder
patent: 3957394 (1976-05-01), Chaskin

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