Propeller

Details Propeller Propeller

2006-12-05

2006-12-05

Look, Edward K. (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Openwork

C416S233000

Reexamination Certificate

active

07144222

ABSTRACT:
A propeller or propeller blade is manufactured using lattice block material to provide a structure which is generally hollow but for a three-dimensional lattice of support spars. The propeller or propeller blade, being predominately hollow, is substantially lighter than a solid cast propeller or propeller blade while retaining the desired strength due to the three-dimensional lattice of support spars.

REFERENCES:
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patent: 5269658 (1993-12-01), Carlson et al.
patent: 5634771 (1997-06-01), Howard et al.
patent: 6033186 (2000-03-01), Schilling et al.
patent: 6311924 (2001-11-01), Ferrer
patent: 792258 (1958-03-01), None
patent: 2154286 (1985-09-01), None
patent: 9955476 (1999-11-01), None
International Search Report Aug. 14, 2003.

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