Abstract: A dredge system includes a dredger, a conduit and a self-priming pump. The dredger has an internal area and an outlet, and is configured to feed material into the internal area of the dredger. The conduit is coupled to the dredger adjacent the outlet and configured to transport the material from the internal area of the dredger to a receptacle. The self-priming pump is coupled to the conduit and is configured to pump the material from the outlet to the receptacle.

Abstract: A bi-directional sled includes a support structure and a shroud assembly. The shroud assembly is supported to the support structure for pivotal movement about an axis extending through the support structure between a first orientation and a second orientation. The shroud assembly has a shroud with a first edge and a second edge opposite the first edge. With the support structure moving the shroud assembly in the first direction relative to material to be dredged friction between the shroud assembly and material to be dredged pivots the shroud and the first edge into a first orientation to contact material to be dredged. With the support structure moving the shroud assembly in the second direction relative to material to be dredged the shroud and second edge are pivoted into a second orientation to contact material to be dredged.

Abstract: An improved high viscosity pump system and its rotor are disclosed herein. In an embodiment, a high viscosity pump system includes a motor, a housing having an inlet and an adjacent rotor space, and a rotor. The rotor is located within the rotor space of the housing and is configured to be driven by the motor around a rotational axis. The rotor includes a first plate and a second plate that rotate together around the rotational axis to pump liquid, material or slurry from the inlet to discharge or an outlet.

Abstract: Amphibious undercarriage systems, drive systems and work vehicles are disclosed herein. In an embodiment, an amphibious undercarriage system includes a pontoon, a first shaft, a second shaft, a track chain and at least one motor. The pontoon has a first end and a second end and is configured to float atop a liquid body. The first shaft is disposed at the first end of the pontoon. The second shaft is disposed at the second end of the pontoon. The track chain is movably attached to the pontoon so as to travel around the pontoon and moveably engaged with the first shaft and the second shaft. The motor is configured to drive the first shaft to cause the track chain to travel around the pontoon and the second shaft to rotate due to engagement with the track chain.

Abstract: A float system includes a first float element and a second float element. The first float element is attachable to the conduit, and the second float element is attachable to the conduit adjacent the first float element. The first float element and the second float element are capable of restricting a bending angle of the conduit.

Abstract: Dredging apparatus systems and methods are disclosed herein. In an embodiment, a dredging apparatus includes a float assembly, a support frame, and a suction head assembly. The float assembly is configured to float on the surface of a liquid. The support frame is connected to the float assembly. The suction head assembly is movably supported with respect to the float assembly by the support frame. The support frame is tiltable with respect to the float assembly between a first position and a second position.

Abstract: A dredge system includes a float having an inlet and an outlet, a drive device including a drive wheel and a suction intake, and a control arm connected to the inlet of the float and an outlet of the suction intake, the control arm configured to extend vertically from the drive device, the float configured to maintain a position directly above the drive device and the drive wheel configured to move the suction intake.

Abstract: A float apparatus includes a buoyant device that has an outer surface with a first end portion, a second end portion and an elongated portion. The elongated portion extends from the first end portion to the second end portion. The buoyant device is shaped and configured to attach to a conduit. The elongated portion of the outer surface has a concaved section that extends from the first end portion to the second end portion. The concaved section has a shape that complements an outer radius of the conduit with the buoyant device attached to the conduit.

Abstract: A slurry removal system includes a tank, an eddy pump, and a pipe system. The tank is configured to receive a mixture of solid material and liquid. The eddy pump has a pump inlet connected to the tank and a pump outlet. The pipe system is connected to the pump outlet and including a discharge line and a recirculation line. The eddy pump is configured to pump the mixture of solid material and liquid from the tank through the pump inlet to the recirculation line to form an essentially homogeneous mixture, and configured to pump the essentially homogeneous mixture from the tank through the pump inlet to the discharge line to remove the homogeneous mixture from the tank.

Abstract: Biopsy devices and methods are disclosed herein. In an embodiment, a biopsy device includes a hollow shaft, a cutting member and an engagement member. The cutting member is connected to an end of the hollow shaft and configured to cut into tissue. The engagement member is movably connected to the hollow shaft and configured to move rotationally and axially relative to the cutting member. The engagement member is configured to move from a first position to a second position engaging the cutting member after the cutting member has initially engaged the tissue.

Abstract: Harvester systems and methods for use in liquid environments are disclosed herein. In an embodiment, a harvester includes a cutter assembly and a frame. The cutter assembly is configured to remove solid material from a liquid environment and includes a cutter housing, one or more cutting blades for cutting the solid material, and a hose connector configured for connection to a hose for pumping the solid material out of the cutter housing. The frame is configured to attach the cutter assembly to a plurality of different vehicles configured to operate in the liquid environment and includes a first adjustment assembly adjustable for removable attachment to the plurality of different vehicles and a second adjustment assembly adjustable to raise the cutter assembly above a surface of the liquid environment and to lower the cutter assembly at least partially into the liquid environment.

Abstract: A locking system includes a first locking mechanism, a second locking mechanism and a handle. The first locking mechanism includes a base and an attachment structure movable relative to the base, the base of the first locking mechanism removably attachable to a first structure, The second locking mechanism includes an opening to receive the attachment structure of the first locking mechanism, the second locking mechanism to be attached to the first attachment structure upon movement of the attachment structure of the first locking mechanism relative to the base of the first locking mechanism. The second locking mechanism is attachable to a second structure. The handle is operable to move the attachment structure movable relative to the base to attach the first attachment structure to the second attachment structure.

Abstract: A modular barge includes a first barge section and a section barge section. The first barge section is buoyant in water, and includes a first locking mechanism. The second barge section is buoyant in water, and includes a second locking mechanism. The first locking mechanism is attached to the first barge and includes a protrusion configured to couple to the second locking mechanism.

Abstract: A dredge system for attachment to a vehicle, the dredge system includes a hopper, a mixer and a pump. The hopper has an internal area and is configured to feed material into the internal area of the hopper. The mixer is coupled to the hopper and configured to shear the material in the internal area of the hopper. The pump is coupled to the hopper and is configured to pump the sheared material through a discharge outlet.

Abstract: A bi-directional sled includes a support structure and a shroud assembly. The shroud assembly is supported to the support structure for pivotal movement about an axis extending through the support structure between a first orientation and a second orientation. The shroud assembly has a shroud with a first edge and a second edge opposite the first edge. With the support structure moving the shroud assembly in the first direction relative to material to be dredged friction between the shroud assembly and material to be dredged pivots the shroud and the first edge into a first orientation to contact material to be dredged. With the support structure moving the shroud assembly in the second direction relative to material to be dredged the shroud and second edge are pivoted into a second orientation to contact material to be dredged.

Abstract: A float includes a body portion having a first side surface and a second side surface, an inner surface and an outer surface, the first and second side surfaces being generally planar and forming an acute angle therebetween, the inner and outer surfaces being non-planar, and the body portion configured such that when positioned laterally adjacent an inverted second float and vertically adjacent a third float, the first side surface of the float abuts a surface of the inverted second float, and the inner surface of the float engages an outer surface of the third float.

Abstract: A power transfer switch suitable as a bypass switch connecting a utility feed to a load comprises a bi-stable actuator selectively driven by a compression means charged by a handle. A latch retains the actuator until suitable power source conditions are detected to allow the transfer to proceed. The controller releases the latch and the actuator abuts breakers in sequence to effect a reliable make-before-break or break-before-make transfer.

Abstract: A float apparatus includes a buoyant device that has an outer surface with a first end portion, a second end portion and an elongated portion. The elongated portion extends from the first end portion to the second end portion. The buoyant device is shaped and configured to attach to a conduit. The elongated portion of the outer surface has a concaved section that extends from the first end portion to the second end, portion. The concaved section has a shape that complements an cuter radius of the conduit with the buoyant device attached to the conduit.

Abstract: A dredge system includes a dredger, a conduit and a self-priming pump. The dredger has an internal area and an outlet, and is configured to feed material into the internal area of the dredger. The conduit is coupled to the dredger adjacent the outlet and configured to transport the material from the internal area of the dredger to a receptacle. The self-priming pump is coupled to the conduit and is configured to pump the material from the outlet to the receptacle.