Manual valve of hydraulic control system for continuously...

Details Manual valve of hydraulic control system for continuously... Manual valve of hydraulic control system for continuously...

2006-08-30

2009-10-20

Evans, Robin O (Department: 3753)

Fluid handling

Systems

Multi-way valve unit

C137S625680, C137S106000

Reexamination Certificate

active

07604022

ABSTRACT:
In order to minimize shift shocks during R→N and D→N manual shifts, in a manual valve of a hydraulic control system of a continuously variable transmission including a valve body having one input port and two output ports and a valve spool having a first land and a second land connecting the input port with one of the two output ports or completely blocking the input port from the two output ports, each land includes slots configured such that inner ends of the slots can be connected to the output ports in a neutral state.

REFERENCES:
patent: 2952275 (1960-09-01), Mock
patent: 5085102 (1992-02-01), Iwase et al.
patent: 5921887 (1999-07-01), Zhang
patent: 6478050 (2002-11-01), Park et al.
patent: 05-059060 (1993-08-01), None
patent: 10-20020006754 (2002-01-01), None

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