US PATENT SUBCLASS 406 / 12
.~ Control of conveying fluid

Current as of: June, 1999
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406 /   HD   CONVEYORS: FLUID CURRENT

10  DF  WITH MEANS TO CONTROL CONVEYING FLUID OR MOVEMENT OF LOAD IN RESPONSE TO SENSED CONDITION {3}
12.~ Control of conveying fluid {4}
13  DF  .~.~> Reversing of fluid current in single tube system
14  DF  .~.~> Responsive to velocity or pressure change in conveying fluid {1}
19  DF  .~.~> Responsive to presence or absence or quantity of load {4}
26  DF  .~.~> Responsive to movement of gate to initiate or terminate fluid current {1}

DEFINITION

Classification: 406/12

Control of conveying fluid:

(under subclass 10) Subject matter wherein the controller regulates the conveying fluid current or pressure.

SEE OR SEARCH THIS CLASS, SUBCLASS:

177+, for a gate which opens in response to the arrival of a load article, but does not alter the movement of the load or conveying fluid.