Rotary labyrinth seal

Details Rotary labyrinth seal Rotary labyrinth seal

1995-07-10

1997-10-14

Footland, Lenard A.

Bearings

Rotary bearing

Antifriction bearing

277 80, 384133, 384480, F16C 3378, F16C 3382

Patent

active

056764723

ABSTRACT:
A rotary seal is located in a gap between an inner surface and an outer surface. A radial bearing allows the inner and outer surfaces to rotate relative to each other. A radial barrier includes a plurality of annular outward-pointing flanges attached to the inner surface interleaved with a plurality of annular inward-pointing flanges attached to the outer surface. The flanges may be angled and have an upturned lip located at an inner edge of each flange. The radial seal may include a magnet. A robotic arm has a first housing with a top surface and an aperture therein. A shaft extends up through the aperture, and there is a gap between the shaft and an inner edge of the aperture. A splash guard may extend over said gap, and an indentation in said top surface may at least partially surround the gap.

REFERENCES:
patent: 2779640 (1957-01-01), Jones
patent: 4348067 (1982-09-01), Tooley
patent: 4527915 (1985-07-01), Ikariishi et al.
patent: 4605233 (1986-08-01), Sato
Ferrofluidics Corporation, "Ferrofluidic Metric Vacuum Rotary Feedthroughs," (Information Bulletin). (1995).
Rigaku Corporation, "Rigaku/Magnetic Rotary Seal Unit--Rotary Feedthrough, RMS Seris," pp. 1-10. (1995).

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