Marine propeller with transversal converging ribs

Details Marine propeller with transversal converging ribs Marine propeller with transversal converging ribs

1993-06-08

1994-11-29

Sotelo, Jesus D.

Marine propulsion

Screw propeller

416236A, B63H 114

Patent

active

053685083

ABSTRACT:
A marine propeller which includes arcuate ribs extending from each blade surface. Each rib is widely spaced at the blade's leading edge and curves inwardly towards the propeller hub to substantially converge at the blade's trailing edge. Each rib is further configured so as its height above the blade surface is highest at the blade's trailing edge and is tapered to a lower height at the leading edge. This rib configuration provides a greater blade surface area to produce greater thrust and overall higher propeller efficiency.

REFERENCES:
patent: 28688 (1860-06-01), Porter
patent: 1424672 (1922-08-01), Ogissek
patent: 1758560 (1930-05-01), Currie
patent: 2498170 (1950-02-01), Meier
patent: 3294175 (1966-12-01), Bodner
patent: 4128363 (1978-12-01), Fujikake
patent: 4265596 (1981-05-01), Katagiri et al.
patent: 4757587 (1988-07-01), Choi
patent: 5193983 (1993-03-01), Shyu

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