Motor vehicles – Special wheel base – Having only two wheels
Reexamination Certificate
2008-04-29
2008-04-29
Ellis, Christopher P. (Department: 3618)
Motor vehicles
Special wheel base
Having only two wheels
C180S292000, C180S068100, C180S068400, C180S908000, C180S068200, C180S068300
Reexamination Certificate
active
10529107
ABSTRACT:
A utility vehicle is provided which has a CVT drive unit. A housing for the drive unit provides an enclosure for the CVT drive components and defines an air flow path. An inlet port associated with the CVT housing includes a fan assembly which provides a source for filtered ambient air flow into the CVT housing. An outlet port associated with the CVT housing provides an exit for the air flow path and equalizes pressure within the enclosure. The interior of the housing is pressurized with ambient air in order to cool the CVT components therein. The pressurized air also creates an air curtain which prevents moisture and debris from intruding into the housing. Preferably the fan is powered separately from the engine of the utility vehicle to ensure positive air flow into the CVT housing even when the engine is in idle mode.
REFERENCES:
patent: 438644 (1890-10-01), Robertson
patent: 1512546 (1924-10-01), Kimble
patent: 2145545 (1939-01-01), Johnson et al.
patent: 2842974 (1958-07-01), Neumann
patent: 2955748 (1960-10-01), Killian
patent: 3467177 (1969-09-01), Hoddinott
patent: 3789684 (1974-02-01), Freier, Jr.
patent: 3943785 (1976-03-01), Percifield
patent: 4187732 (1980-02-01), Takagi et al.
patent: 4422498 (1983-12-01), Chen
patent: 4493677 (1985-01-01), Ikenoya
patent: 4497285 (1985-02-01), Kondo
patent: 4531928 (1985-07-01), Ikenoya
patent: 4596537 (1986-06-01), Te-Long
patent: 4631977 (1986-12-01), Kawashima
patent: 4632070 (1986-12-01), Onda et al.
patent: 4671781 (1987-06-01), Tanaka et al.
patent: 4671782 (1987-06-01), Ochiai et al.
patent: 4697665 (1987-10-01), Eastman et al.
patent: 4712629 (1987-12-01), Takahashi et al.
patent: 4733639 (1988-03-01), Kohyama et al.
patent: 4901813 (1990-02-01), Kimura et al.
patent: 5086858 (1992-02-01), Mizuta et al.
patent: 5101924 (1992-04-01), Yamagiwa et al.
patent: 5152361 (1992-10-01), Hasegawa et al.
patent: 5183130 (1993-02-01), Nakamura et al.
patent: 5725446 (1998-03-01), Kaku et al.
patent: 5976044 (1999-11-01), Kuyama
patent: 6176796 (2001-01-01), Lislegard
patent: 6267700 (2001-07-01), Takayama
patent: 6394555 (2002-05-01), Mizuta et al.
patent: 6422332 (2002-07-01), Takata et al.
patent: 6460916 (2002-10-01), Mizuta
patent: 6517111 (2003-02-01), Mizuta
patent: 6523879 (2003-02-01), Mizuta
patent: 6601668 (2003-08-01), Kitai et al.
patent: 6616207 (2003-09-01), Mizuta
patent: 6622806 (2003-09-01), Matsuura
patent: 6633800 (2003-10-01), Ward et al.
patent: 6666290 (2003-12-01), Yamauchi
patent: 6675922 (2004-01-01), Kawamoto et al.
patent: 6694836 (2004-02-01), Kawamoto et al.
patent: 6695083 (2004-02-01), Nakamura et al.
patent: 6705417 (2004-03-01), Kitai et al.
patent: 6733406 (2004-05-01), Kitai et al.
patent: 6920949 (2005-07-01), Matsuura et al.
patent: 2001/0024046 (2001-09-01), Mitzuta
patent: 2001/0054832 (2001-12-01), Mitzuta
patent: 2003/0217884 (2003-11-01), Kawamoto
patent: 59164226 (1984-09-01), None
patent: 05026328 (1993-02-01), None
patent: 06042612 (1994-02-01), None
patent: 06229459 (1994-08-01), None
patent: 06272750 (1994-09-01), None
International Search Report and Written Opinion in PCT/US05/04334, dated Oct. 4, 2007.
Bush Hog, LLC
Collado Cynthia F.
Cook Alex McFarron Manzo Cummings & Mehler, Ltd.
Ellis Christopher P.
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