Internal-combustion engines – Valve – Packing
Reexamination Certificate
2006-04-11
2006-04-11
Moulis, Thomas (Department: 3747)
Internal-combustion engines
Valve
Packing
C277S502000
Reexamination Certificate
active
07025030
ABSTRACT:
A valve stem seal assembly includes a changeable cap. The cap is made of a flexible material, such as plastic or the like. A sealing element with sealing lips for sealing the valve stem is integrally bonded to the cap. The cap includes one or more tabs with a gripping member that cooperates with a corresponding gripping member on the retainer to snap-fit the cap onto the retainer. The retainer can also be made of plastic material. Once fitted onto the retainer, the cap can be easily removed by constructively destroying the one or more tabs using a tool, such as a screwdriver. A cap with a new sealing element can then be snap-fit on the retainer. The changeable cap allows for replacement of the sealing element without replacing the retainer or other components of the valve stem seal assembly.
REFERENCES:
patent: 1551181 (1925-08-01), Tully
patent: 3379445 (1968-04-01), Fisher
patent: 3442517 (1969-05-01), Skinner, Sr.
patent: 3601420 (1971-08-01), Binford
patent: 4502696 (1985-03-01), Kammeraad
patent: 4811704 (1989-03-01), Boehmer et al.
patent: 4811960 (1989-03-01), Stritzke et al.
patent: 4822061 (1989-04-01), Kammeraad
patent: 4909202 (1990-03-01), Binford et al.
patent: 4928644 (1990-05-01), Travis
patent: 5002018 (1991-03-01), Strout
patent: 5110142 (1992-05-01), Szott
patent: 5553869 (1996-09-01), Stamback
patent: 6006778 (1999-12-01), Kim
patent: 6227548 (2001-05-01), Netzer
patent: 6230679 (2001-05-01), Hegernier et al.
patent: 6318328 (2001-11-01), Hegemier
patent: 6394463 (2002-05-01), Otani
patent: 6764079 (2004-07-01), Hegemier et al.
Dana Corporation
Moulis Thomas
Rader & Fishman & Grauer, PLLC
LandOfFree
Valve stem seal assembly with changeable cap does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Valve stem seal assembly with changeable cap, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Valve stem seal assembly with changeable cap will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3546039