Endless belt power transmission systems or components – Pulley with belt-receiving groove formed by drive faces on... – Fluid pressure actuator for adjustment of member
Reexamination Certificate
2006-07-11
2006-07-11
Charles, Marcus (Department: 3682)
Endless belt power transmission systems or components
Pulley with belt-receiving groove formed by drive faces on...
Fluid pressure actuator for adjustment of member
C474S018000
Reexamination Certificate
active
07074144
ABSTRACT:
Hydraulic control apparatus includes a belt-drive CVT, a pressure regulator valve (P.REG.V) regulating the oil pressure produced by an oil pressure source, a controller programmed to develop a transmission control signal, a transmission actuator driven based on the signal, and a transmission control valve actuated by the actuator. There are provided a first oil passage for supplying an oil pressure regulated by the P.REG.V, a second oil passage for supplying the oil pressure regulated to a primary pulley cylinder chamber of the CVT and draining the oil pressure therefrom, a third oil passage for draining the oil pressure within the cylinder chamber, and a fourth oil passage downstream of the P.REG.V. The third and fourth oil passages are connected to supply an oil pressure to the cylinder chamber and establish a minimum oil pressure required for clamping the belt depending on reduction of the oil pressure within the cylinder chamber.
REFERENCES:
patent: 4458318 (1984-07-01), Smit et al.
patent: 4551119 (1985-11-01), Sugaya et al.
patent: 4579021 (1986-04-01), Yamamuro et al.
patent: 4944201 (1990-07-01), Iino et al.
patent: 5113718 (1992-05-01), Sato
patent: 5961418 (1999-10-01), Taniguchi et al.
patent: 6461261 (2002-10-01), Yamamoto et al.
patent: 6508741 (2003-01-01), Murakami et al.
patent: 6612958 (2003-09-01), Imai et al.
patent: 2004/0157700 (2004-08-01), Katou
patent: 0 899 482 (1999-03-01), None
patent: 0 899 865 (1999-03-01), None
patent: 9-32898 (1997-02-01), None
U.S. Appl. No. 10/674,069, filed Sep. 30, 2003, Sawada et al.
U.S. Appl. No. 10/664,031, filed Sep. 17, 2003, Yamamoto et al.
U.S. Appl. No. 10/674,091, filed Sep. 30, 2003, Jozaki et al.
U.S. Appl. No. 10/670,270, filed Sep. 26, 2003, Nobu.
U.S. Appl. No. 10/662,442, filed Sep. 16, 2003, Ochiai et al.
U.S. Appl. No. 10/670,223, filed Sep. 26, 2003, Wakayama.
U.S. Appl. No. 10/673,549, filed Sep. 30, 2003, Sawada et al.
U.S. Appl. No. 10/670,775, filed Sep. 26, 2003, Shimanaka et al.
Charles Marcus
Foley & Lardner LLP
Jatco Ltd
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