US PATENT SUBCLASS 254 / 134.4
.~ By fluid pressure differential in conduit (e.g., parachute sucked through conduit)


Current as of: June, 1999
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254 /   HD   IMPLEMENTS OR APPARATUS FOR APPLYING PUSHING OR PULLING FORCE

134.3 R  DF  METHOD OR APPARATUS FOR PLACEMENT OF CONDUCTIVE WIRE {7}
134.4.~ By fluid pressure differential in conduit (e.g., parachute sucked through conduit)


DEFINITION

Classification: 254/134.4

By fluid pressure differential in conduit (e.g., parachute sucked through conduit):

(under subclass 134.3) Subject matter wherein a vane or similar fixture is connected to the conductor and may be caused to move through the conduit by a fluid current therein.

SEE OR SEARCH CLASS

15, Brushing, Scrubbing, and General Cleaning,

3.5+, for devices for cleaning the inside of a tubular conduit by introducing therein a solid cleaning agent and a fluid other than that normally handled in the conduit; subclass 104.06 for cleaning implements propelled through a conduit by fluid flowing therein; and subclass 104.12 for devices wherein a cleaning instrumentality is propelled through a conduit by mechanical traction developed by a motor means actuated by a fluid not confined solely by the conduit.

137, Fluid Handling,

242+, for mechanical cleaning of an installed fluid-handling system.

226, Advancing Material of Indeterminate Length, may include a nominal recitation of a supply or take-up coil (e.g., less than a support for such a coil or a cooperative relationship between a tension or exhaust detector and reel-driving or reel-stopping means, etc.),

97.4, for a vacuum jet for a strand. 406, Conveyors: Fluid Current, appropriate subclasses for analogous subject matter, viz., propelling articles through a conduit by means of a fluid current.