US PATENT SUBCLASS 137 / 625.46
.~.~ Rotary valve unit
Current as of:
June, 1999
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137 /
HD
FLUID HANDLING
561 R
DF
SYSTEMS
{32}
625
DF
.~ Multi-way valve unit {12}
625.46
.~.~ Rotary valve unit {1}
625.47
DF
.~.~.~
> Plug
DEFINITION
Classification: 137/625.46
(under subclass 625) Devices comprising a valve head which rotates about its axis and has a flow passage within it, and wherein two or more branched flow passages are controlled.