Propeller combination for a boat propeller unit

Details Propeller combination for a boat propeller unit Propeller combination for a boat propeller unit

1986-09-12

1988-05-03

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Plural impellers having relative movement or independent...

Coaxial rotation

416175, 416242, B63H 118

Patent

active

047416700

ABSTRACT:
The invention relates to a boat propeller unit with double, counter-rotating propellers. The forward propeller is designed to function without cavitation, while the after-propeller is optimally cavitating by being made cupped and with a blade width of between 60% and 75% of the blade width of the forward propeller.

REFERENCES:
patent: 1088080 (1914-02-01), Leavitt
patent: 1853694 (1932-04-01), Melcher
patent: 2672115 (1954-03-01), Conover
patent: 3109495 (1963-11-01), Lang
patent: 3514215 (1970-05-01), Williams
patent: 3697193 (1972-10-01), Phillips
patent: 4073601 (1978-02-01), Kress
patent: 4529387 (1985-07-01), Brandt
patent: 4552511 (1985-11-01), Sumigawa
patent: 4619584 (1986-10-01), Brandt
patent: 4642059 (1987-02-01), Nohara

Affiliated with

Also associated with

Rating

Propeller combination for a boat propeller unit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Propeller combination for a boat propeller unit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Propeller combination for a boat propeller unit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1502842