Title: Static seal with an open rotational mode

Abstract: A seal is disclosed for a shaft journalled to rotate within a sleeve. The seal comprises annular members mounted between the shaft and the sleeve for relative movement along an axis common to the shaft and the sleeve. The members are biased into sealing engagement with each other and are separable by fluid pressure for relative rotation of the shaft and the sleeve with no surface-to-surface wear of the seal.

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Inventors: Smith, Robert L. (Louisville, KY, US)

Application Number: 620682
Filing Date: 1975-10-08
Publication_date: 1977-03-22
Assignee: Chemetron Corporation (Chicago, IL)
Primary Class(es): 277/365 277/366, 277/367, 277/384, 277/387, 277/394, 277/407
Other Classes:
US Patent Ref:

2710205	Jun, 1955	Brkich	277/3.
2768011	Oct, 1950	Mosher	277/96.
3499653	Mar, 1970	Gardner	277/61.
3511510	May, 1970	Lindeboom	277/74.
3572727	Mar, 1971	Greiner	277/74.

Other Refs: 1,162,103

Aug, 1969	UK

Primary Examiner: Smith, Robert I.
Assistant Examiner:
Attorney: Esser; N. M.