Title: Rotary bellows seal with vibration-damping means

Abstract: A split-ring radially expandable under centrifugal force for damping vibrations of a rotary annular bellows by pressing against the inner surfaces of at least some of the convolutions of the bellows as the speed of the bellows increases. Preferably, the split-ring is positioned in a channel for rotation with the bellows and for radial expansion as a function of the rotary movement, while restrained from axial movement with respect to the bellows.

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Inventors: Mullaney, John J. (Warwick, RI, US)

Application Number: 895801
Filing Date: 1978-04-12
Publication_date: 1979-08-07
Assignee: Sealol, Inc. (Warwick, RI)
Primary Class(es): 277/392 277/379, 277/916
Other Classes:
US Patent Ref:

2574808	Nov, 1951	Wolfe	277/88.
3276780	Oct, 1966	Andresen et al.	277/42.
3372939	Mar, 1968	Coulombe et al.	277/88.
3397894	Aug, 1968	Mastriforte et al.	277/30.
3515394	Jun, 1970	Stevens	277/88.
3747943	Jul, 1973	Dietzel et al.	277/30.

Other Refs:
Primary Examiner: Ward, Jr., Robert S.
Assistant Examiner:
Attorney: Finnegan, Henderson, Farabow & Garrett