Fluid reaction surfaces (i.e. – impellers) – Specific blade structure – Openwork
Patent
1981-08-06
1984-05-01
Marcus, Stephen
Fluid reaction surfaces (i.e., impellers)
Specific blade structure
Openwork
416132A, 416212R, 416231R, 416DIG3, B64C 1116
Patent
active
044458177
ABSTRACT:
A propeller formed from pliable sheet material with each blade being of looped configuration in plan view. An end segment of each blade is turned inwardly and attached to an inner segment of an adjacent blade at a point offset from the propeller hub portion. A blade root of each blade is of reduced width and extends between a blade inner segment and the propeller hub portion which is apertured to receive a motor output shaft having frictionally engaged disks thereon which oppositely abut the hub portion for shaft attachment purposes.
REFERENCES:
patent: 181196 (1876-08-01), Nysewander
patent: 430796 (1890-06-01), Barclay
patent: 547210 (1895-10-01), Haussmann
patent: 1041913 (1912-10-01), Tyson
patent: 1459160 (1923-06-01), Nims
patent: 2098107 (1937-11-01), Preston
patent: 2552651 (1951-05-01), Skold
patent: 2996120 (1961-08-01), McGregor
patent: 3306588 (1967-02-01), Reid
Givnan, Jr. James D.
John Kwon
Marcus Stephen
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