Propeller structure

Details Propeller structure Propeller structure

1998-02-26

2000-08-22

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

Projecting blade axis offset from rotation axis

416237, 416238, 416175, B63H 120

Patent

active

061062324

ABSTRACT:
A propeller used to interact with a fluid to either move the fluid, e.g., a fan or generate thrust for propulsion, e.g., for an aircraft or boat. The propeller is characterized by at least first and second planar blades configured for mounting on a propeller shaft. Each of the planar blades defines a periphery including (1) a trailing edge lying substantially in a common plane oriented perpendicular to the propeller shaft and (2) a leading edge inclined at an angle of A.degree. relative to the common plane so that the midpoint of the leading edge is axially displaced, relative to the propeller shaft, from the midpoint of the trailing edge.

REFERENCES:
patent: 1733251 (1929-10-01), Deering
patent: 3333831 (1967-08-01), Chapman

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