Automatic variable pitch marine propeller with mechanical holdin

Details Automatic variable pitch marine propeller with mechanical holdin Automatic variable pitch marine propeller with mechanical holdin

1993-05-12

1994-07-05

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

With control means responsive to non-cyclic condition...

Impeller rotation speed responsive

416 43, 416 89, 416136, 416139, 416140, B63H 300

Patent

active

053262239

ABSTRACT:
There is provided a self-actuating variable pitch marine propeller which incorporates two or more blades, each independently rotatable, relative to the propeller hub, between a first lower and a second higher pitch. The blades are preferably mechanically linked by coordinating devices and are caused to move preferably by a combination of centrifugal force effect resulting from inertial masses means and the hydrodynamic forces acting upon the blade hydrodynamic surface. The rotation of the blades relative to the propeller hub is restrained until the restraint is overcome by the forces acting to pivot the blades to the higher pitch position. Most preferably there is also provided a mechanical bias, such as a spring to hold the blades in the lower pitch position. Initially, the hydrodynamic force can also tend to hold in the blades in the lower pitch position, or to move the blades towards the higher pitch.

REFERENCES:
patent: 1970114 (1934-08-01), Wiegand
patent: 2415421 (1947-02-01), Defilippis
patent: 2528609 (1950-11-01), Rouse
patent: 2608257 (1952-08-01), Godfrey
patent: 2694459 (1954-11-01), Biermann
patent: 2949966 (1960-08-01), Simshauser
patent: 2988156 (1961-06-01), Coleman
patent: 3177948 (1965-04-01), Reid
patent: 3231023 (1966-01-01), Marshall
patent: 3321023 (1967-05-01), Russell et al.
patent: 3567336 (1971-03-01), Bartha
patent: 4419050 (1983-12-01), Williams
patent: 4792279 (1988-12-01), Bergeron
patent: 4984967 (1991-01-01), Cruzen
patent: 5022820 (1991-06-01), Bergeron
patent: 5219272 (1993-06-01), Steiner et al.

Affiliated with

Also associated with

Rating

Automatic variable pitch marine propeller with mechanical holdin does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automatic variable pitch marine propeller with mechanical holdin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic variable pitch marine propeller with mechanical holdin will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-793020