Dynamic seal

Details Dynamic seal Dynamic seal

2010-06-30

2011-11-29

Patel, Vishal (Department: 3674)

Seal for a joint or juncture

Seal between relatively movable parts

Circumferential contact seal for other than piston

C277S571000

Reexamination Certificate

active

08066287

ABSTRACT:
A dynamic shaft seal assembly is provided including a dynamic seal for engaging a rotary shaft. The dynamic seal includes a base portion that is mounted within a casing and has an axially extending barrel portion extending from a radially inner end of the base portion. The axially extending barrel portion terminates in a radially extending leg portion which extends inwardly from an end of the axially extending portion. A generally conically shaped seal portion extends from an end of the radially extending portion and the seal portion includes a radially inner face engaging the shaft and a radially outer face having a stiffening bead integrally formed thereon. The stiffening bead reduces the seal's propensity for “bell mouthing” while the axially extending barrel portion provides improved shaft followability for the dynamic seal.

REFERENCES:
patent: 2482029 (1949-09-01), Reynolds
patent: 2635907 (1953-04-01), Heimbuch
patent: 2697623 (1954-12-01), Mosher
patent: 2731284 (1956-01-01), Chambers, Jr. et al.
patent: 2736583 (1956-02-01), Marvin
patent: 2736585 (1956-02-01), Riesing
patent: 2736586 (1956-02-01), Riesing
patent: 2743950 (1956-05-01), Helfrecht et al.
patent: 2758853 (1956-08-01), Beck
patent: 2797944 (1957-07-01), Riesing
patent: 3005648 (1961-10-01), Christensen
patent: 3049356 (1962-08-01), Talamonti
patent: 3356376 (1967-12-01), Bradfute et al.
patent: 3477730 (1969-11-01), Kare et al.
patent: 3554566 (1971-01-01), Bechtrold et al.
patent: 3572734 (1971-03-01), Holt
patent: 3612546 (1971-10-01), Otto et al.
patent: 3623738 (1971-11-01), MacDonnell
patent: 3785660 (1974-01-01), Bush
patent: 3822890 (1974-07-01), Bourgeois
patent: 3827703 (1974-08-01), Brink
patent: 3921987 (1975-11-01), Johnston
patent: 3921990 (1975-11-01), Johnston
patent: 3941396 (1976-03-01), Bailey et al.
patent: 4021049 (1977-05-01), Phelps et al.
patent: 4037849 (1977-07-01), Thumm
patent: 4102538 (1978-07-01), Bertin
patent: 4106781 (1978-08-01), Benjamin et al.
patent: 4126320 (1978-11-01), Pendleton
patent: 4190258 (1980-02-01), Arai et al.
patent: 4208060 (1980-06-01), St. Laurent, Jr.
patent: 4226428 (1980-10-01), Paptzun
patent: 4229010 (1980-10-01), St. Laurent, Jr.
patent: 4270762 (1981-06-01), Johnston
patent: 4274641 (1981-06-01), Cather, Jr.
patent: 4300778 (1981-11-01), Gagne
patent: 4344631 (1982-08-01), Winn
patent: 4348031 (1982-09-01), Johnston
patent: 4360208 (1982-11-01), Hill et al.
patent: 4413829 (1983-11-01), Pietsch
patent: 4449717 (1984-05-01), Kitawaki et al.
patent: 4474484 (1984-10-01), MacInnes et al.
patent: 4519616 (1985-05-01), Johnston
patent: 4531747 (1985-07-01), Miura et al.
patent: 4550920 (1985-11-01), Matsushima
patent: 4553763 (1985-11-01), Ehrmann
patent: 4585236 (1986-04-01), Simmons et al.
patent: 4588195 (1986-05-01), Antonini et al.
patent: 4611931 (1986-09-01), Brandenstein et al.
patent: 4630834 (1986-12-01), Muller et al.
patent: 4635947 (1987-01-01), Hatayama
patent: 4650196 (1987-03-01), Bucher et al.
patent: 4750748 (1988-06-01), Visser
patent: 4805919 (1989-02-01), Wiblyi et al.
patent: 4815749 (1989-03-01), Johnston
patent: 4844484 (1989-07-01), Antonini et al.
patent: 4940248 (1990-07-01), Kilthau et al.
patent: 4986553 (1991-01-01), Preston et al.
patent: 4995621 (1991-02-01), Devouassoux et al.
patent: 5004248 (1991-04-01), Messenger et al.
patent: 5137285 (1992-08-01), Pick
patent: 5167419 (1992-12-01), Robertson
patent: 5183269 (1993-02-01), Black et al.
patent: 5190299 (1993-03-01), Johnston
patent: 5201528 (1993-04-01), Upper
patent: 5244215 (1993-09-01), Cather, Jr. et al.
patent: 5292199 (1994-03-01), Hosbach et al.
patent: 5348312 (1994-09-01), Johnston
patent: 5348313 (1994-09-01), Pawlakowitsch et al.
patent: 5370404 (1994-12-01), Klein et al.
patent: 5398942 (1995-03-01), Duckwall et al.
patent: 5427387 (1995-06-01), Johnston
patent: 5462287 (1995-10-01), Hering et al.
patent: 5462288 (1995-10-01), Hering et al.
patent: 5476270 (1995-12-01), vom Schwemm et al.
patent: 5501469 (1996-03-01), Ducugnon et al.
patent: 5509667 (1996-04-01), Klein et al.
patent: 5556112 (1996-09-01), Brandt
patent: 5624290 (1997-04-01), Von Bergen et al.
patent: 5668426 (1997-09-01), Lamert et al.
patent: 5711534 (1998-01-01), Bengoa et al.
patent: 5791658 (1998-08-01), Johnston
patent: 5842828 (1998-12-01), Ozawa et al.
patent: 5909880 (1999-06-01), Waskiewicz
patent: 5921555 (1999-07-01), Johnston
patent: 5957461 (1999-09-01), Ulrich
patent: 5967527 (1999-10-01), Fabro et al.
patent: 6019229 (2000-02-01), Rao
patent: 6298955 (2001-10-01), Frost
patent: 6409177 (2002-06-01), Johnston
patent: 6428013 (2002-08-01), Johnston et al.
patent: 6481896 (2002-11-01), Ohtsuki et al.
patent: 6513812 (2003-02-01), Yang et al.
patent: 6520507 (2003-02-01), Pataille et al.
patent: 6601855 (2003-08-01), Clark
patent: 6688603 (2004-02-01), vom Schemm
patent: 6702293 (2004-03-01), Endo et al.
patent: 6860486 (2005-03-01), Hacker et al.
patent: 6921080 (2005-07-01), Johnen
patent: 6921082 (2005-07-01), Lutaud
patent: 6945537 (2005-09-01), Guillerme et al.
patent: 7004471 (2006-02-01), Bryde et al.
patent: 7134669 (2006-11-01), Uhrner
patent: 7172201 (2007-02-01), Uhrner
patent: 7854433 (2010-12-01), Berdichevsky
patent: 2002/0117810 (2002-08-01), Schemm
patent: 2003/0006563 (2003-01-01), Cater et al.
patent: 2003/0085527 (2003-05-01), Hacker et al.
patent: 2003/0189293 (2003-10-01), Johnen
patent: 2003/0230850 (2003-12-01), Bruyere et al.
patent: 2003/0230852 (2003-12-01), Bengoa et al.
patent: 2004/0160014 (2004-08-01), Uhrner
patent: 2005/0098959 (2005-05-01), Uhrner
patent: 2005/0167928 (2005-08-01), Park et al.
patent: 2006/0022414 (2006-02-01), Balsells
patent: 2006/0125192 (2006-06-01), Johnston
patent: 2006/0290070 (2006-12-01), Park
patent: 20111007 (2002-02-01), None
patent: 20121487 (2002-12-01), None
patent: 10353305 (2004-05-01), None
patent: 10353304 (2005-06-01), None
patent: 2000320689 (2000-11-01), None
Radial Lip NOK Oil Seals Inch and Metric, Cat. No. 014E-10-85 (2 pages).
Seal Handbook, Chicago Rawhide, Cat. No. 457010 (Jun. 1999) (2 pages).

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