Motorboat impeller

Details Motorboat impeller Motorboat impeller

1994-04-26

1995-09-19

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

Support mounting, carrier or fairing structure

416245A, B63H 2334

Patent

active

054511437

ABSTRACT:
A motorboat impeller comprises an axial portion, a plurality of blades attached to the periphery of the axial portion, an axial casing, and a nose. The axial portion of a conical construction has a front end with an outer diameter smaller than an outer diameter of a rear end thereof and further has a first axial hole extending therethrough. The axial casing is fastened to the inside of the front end of the first axial hole and is harder in quality than the axial portion. The axial casing is provided therethrough with a second axial hole having in the inner wall thereof a plurality of retaining slots engageable with the splines of a driveshaft. The nose of an elastic material is attached to the front end of the axial portion so that the axial portion has a streamline profile.

REFERENCES:
patent: 934633 (1909-09-01), Scott
patent: 2443688 (1948-06-01), McFarland
patent: 3542487 (1970-11-01), Knuth
patent: 3865509 (1975-02-01), Frazzell et al.
patent: 4789303 (1988-12-01), Frazzell et al.

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