Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Reexamination Certificate
1999-11-05
2001-07-03
Brittain, James R. (Department: 3626)
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
C277S392000, C277S394000
Reexamination Certificate
active
06254102
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention is directed to a seal device for creating a seal with a shaft, and in particular to a seal device having a generally circular and annular flexible finger seal member adapted to sealingly engage the shaft.
There has long been a need for a cost effective seal device to protect shafts, bearings, stuffing boxes and other parts from excessive wear due to abrasives. Abrasives quickly wear conventional fixed seals due to misalignment of the shaft and lineal movement due to changes in temperature. Long-line shafts in submerged slurrys, and other abrasive applications, have been particularly troublesome.
SUMMARY OF THE INVENTION
A seal device for creating a seal between a rotatable shaft and a stationary member such as a bearing. The seal device includes a seal member including a generally annular body having a first end and a second end. The body includes a generally cylindrical inner wall that forms a bore which extends through the body from the first end to the second end. The body includes a generally planar surface at the first end which is generally perpendicular to the bore and which is adapted to rotatably and sealingly engage the stationary member. The seal member also includes a generally annular flexible finger seal member at the first end of the body. The flexible finger seal is generally sheet-like and includes a base attached to the body and a generally circular peripheral tip which defines a generally circular aperture. The flexible finger seal member extends from the body inwardly toward the center of the body beyond the inner wall of the body. The body includes a generally circular groove that extends into the body from the inner wall. The groove is located adjacent the finger seal member. The base of the finger seal member is located adjacent the inner closed end of the groove. The base of the seal member and the aperture of the finger seal member are adapted to receive the shaft such that the tip of the finger seal is in static sealing engagement with the shaft. The seal member is removably attached to the shaft for conjoint rotation therewith by a coupling member. The coupling member is adapted to resiliently bias the sealing surface of the seal member into rotating engagement with the stationary member and thereby create a seal between the sealing surface of the seal member and the stationary member.
REFERENCES:
patent: 2276622 (1942-03-01), Leake
patent: 2354478 (1944-07-01), Reinhardt et al.
patent: 2851291 (1958-09-01), Payne
patent: 3117794 (1964-01-01), Wachal
patent: 3179425 (1965-04-01), Andresen
patent: 3372076 (1968-03-01), Wilkinson
patent: 3511513 (1970-05-01), Dahlheimer
patent: 4343478 (1982-08-01), Morgan et al.
patent: 4427203 (1984-01-01), Escue
patent: 4440401 (1984-04-01), Olschewski et al.
patent: 4463958 (1984-08-01), Butler
patent: 4806026 (1989-02-01), Bauer et al.
patent: 4832511 (1989-05-01), Nisley et al.
patent: 4861044 (1989-08-01), Jay
patent: 4943068 (1990-07-01), Hatch et al.
patent: 5011301 (1991-04-01), Martinie
patent: 5024449 (1991-06-01), Otto
patent: 5188377 (1993-02-01), Drumm
patent: 5332235 (1994-07-01), Fone et al.
patent: 5687972 (1997-11-01), Petrak
patent: 6039320 (2000-03-01), MacDonald
Beres John L.
Brittain James R.
Lee Mann Smith McWilliams Sweeney & Ohlson
McNish Corporation
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