Hermetically sealed rotary drive apparatus

Details Hermetically sealed rotary drive apparatus Hermetically sealed rotary drive apparatus

1978-07-17

1980-08-12

McCall, James T.

Machine element or mechanism

Motion transfer through imperforate flexible seal

74 63, 74640, F16J 1550

Patent

active

042166772

ABSTRACT:
Rotary drive apparatus includes coaxial inner and outer shaft portions. One portion supports a pair of bearings on axes offset from the shaft axis. The other portion supports rotatable bearing rings offset from the shaft and bearing axes, but in alignment with the bearings. A flexible sealing member is oriented between the two shaft portions and is non-rotatable. Band contact between the bearings, the flexible sealing member, and the rings due to Hertzian stress results in absorption of stress forces over a wide area, thus reducing wear.

REFERENCES:
patent: 2497867 (1950-02-01), Cymmer
patent: 2943495 (1960-07-01), Musser
patent: 3049931 (1962-08-01), Lang, Jr. et al.
patent: 3077792 (1963-02-01), Kinderman
patent: 3190227 (1965-06-01), Davids et al.
patent: 3196713 (1965-07-01), Robinson
patent: 3208289 (1965-09-01), Hutter et al.
patent: 3283597 (1966-11-01), Doll
patent: 3835717 (1974-09-01), Rudolph

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