.~ With means to control dredger operation (e.g., movement of dredged material) in response to sensed condition {3}
310
.~.~ Swell compensator
DEFINITION
Classification: 37/310
Swell compensator:
(under subclass 309) Apparatus including a shock absorbing, tension restoring means provided on the dredger to negate or offset the heave motion of the waves in a body of water so that the excavation apparatus can be maintained at a desired underwater coordinate. [figure] [caption]A - Vessel; B - Pump; C - Suction pipe; D - Dredge unit; E - Cable; F - Winch; G - Piston; H - Cylinder; Swell compensator; J - Piston rod; K - Pressurized air tank; L - Pump motor
SEE OR SEARCH CLASS
175, Boring or Penetrating the Earth,
5+, for related structure in connection with a drilling platform at sea.
212, Traversing Hoists,
272+, for subject matter having means to prevent or dampen load oscillations.
254, Implements or Apparatus for Applying Pushing or Pulling Force,
277, for apparatus for hauling or hoisting a load, including a driven device which contacts and pulls on a cable and includes fluid or resilient shock absorbing means or tension maintaining means attached to the cable supporting structure; subclass 392 for apparatus for contacting and guiding a moving cable wherein the cable contacting wheel element has fluid, shock absorbing or tension restoring mechanism connected thereto; subclass 900 for a cable pulling drum having a wave motion responsive actuator. 405, Hydraulic and Earth Engineering,
195.1+, for a buoyancy compensator on a marine platform.
