Self-activating ferrofluid seal and method

Details Self-activating ferrofluid seal and method Self-activating ferrofluid seal and method

1980-05-01

1981-02-24

Ward, Jr., Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 343, 277 80, 277226, 206303, 156 86, 156122, F16J 1516, F16J 1540

Patent

active

042523281

ABSTRACT:
A self-activating ferrofluid-seal apparatus for a memory-disc-drive shaft, which seal apparatus comprises a ring magnet and a pair of pole pieces which form a cavity therebetween, a closed loop of a plastic tubular container with ferrofluid positioned within the cavity, and a penetration clamp to penetrate the plastic container prior to installation of the shaft element.

REFERENCES:
patent: 1311392 (1919-07-01), Harrison
patent: 2309658 (1943-02-01), Miller
patent: 2893060 (1959-07-01), Wills
patent: 3038732 (1962-06-01), Scott et al.
patent: 3322430 (1967-05-01), Voitik
patent: 3740060 (1973-06-01), Miskolczy et al.
patent: 3847694 (1974-11-01), Stewing
patent: 4171818 (1979-10-01), Moskowitz et al.
patent: 4194746 (1980-03-01), Stevens

Affiliated with

Also associated with

Rating

Self-activating ferrofluid seal and method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Self-activating ferrofluid seal and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Self-activating ferrofluid seal and method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1405173