.~ 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.
