Magnetic drive subassembly in a depth control device

Details Magnetic drive subassembly in a depth control device Magnetic drive subassembly in a depth control device

1997-09-03

2000-02-29

Oda, Christine K.

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Offshore prospecting

367 17, 310 75, H02K 710

Patent

active

060317892

ABSTRACT:
A magnetic drive device couples the drive motor of a depth control device or bird, with the axle of the depth control wings. The magnetic drive includes a plurality of permanent magnet pieces mounted in respective drive blocks on either side of a magnetically permeable membrane of the main body of the drive mechanism. The magnet pieces are mounted side by side in alternating polarity to capture as much of the magnetic flux of the magnets as possible to minimize stray flux from escaping the drive. Pole pieces either side of the drive blocks also serve to capture stray flux. To the maximum extent possible within the constraints of mechanical durability, the drive mechanism is made of non-magnetic or non-ferrous materials which would interfere with the heading sensor of the bird. Thus, this invention avoids reducing the accuracy of the heading sensor of the bird, while eliminating a major source of seawater inleakage into the bird.

REFERENCES:
patent: 3673556 (1972-06-01), Biggs
patent: 3680520 (1972-08-01), Smith
patent: 3931608 (1976-01-01), Cole
patent: 3943483 (1976-03-01), Strange
patent: 4290124 (1981-09-01), Cole
patent: 4709355 (1987-11-01), Woods et al.
patent: 4711194 (1987-12-01), Fowler
patent: 5444318 (1995-08-01), Stumpf
patent: 5619474 (1997-04-01), Kuche
patent: 5633555 (1997-05-01), Ackermann et al.

Affiliated with

Also associated with

Rating

Magnetic drive subassembly in a depth control device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Magnetic drive subassembly in a depth control device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic drive subassembly in a depth control device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-689040