Title: Shaft seal device

Abstract: A shaft sealing device using seal rings having a hook shaped portion defining an inner radial lip to engage and seal the shaft. The rings are positioned symmetrically with respect to a spacer to define a sealing liquid chamber between the shaft, the spacer and the lip portion. The spacer has liquid seal passages formed therein to introduce sealing liquid. The axial length of the lip portion is shorter than the axial hight of outer peripheral surface of the seal ring and the inner peripheral surface is tapered inwardly with respect to the axis of the shaft.

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Inventors: Sekiguchi, Yoshikazu (Kounosu, JP)
Asano, Kenji (Ageo, JP)

Application Number: 022387
Filing Date: 1979-03-21
Publication_date: 1980-09-16
Assignee: Nippon Piston Ring Co., Ltd. (Tokyo, JP)
Primary Class(es): 277/558 277/514, 277/516, 277/563
Other Classes:
US Patent Ref:

2466025	Apr, 1949	Hanson	277/3.
3726531	Apr, 1973	Pagan et al.	277/59.
3825270	Jul, 1974	Paramonoff et al.	277/59.
3847453	Nov, 1974	Herbert	277/59.
4010960	Mar, 1977	Martin	277/3.

Other Refs: 1389832

Apr, 1975	GB

Primary Examiner: Ward, Jr., Robert S.
Assistant Examiner:
Attorney: Sughrue, Rothwell, Mion, Zinn and Macpeak