A wind turbine blade suspension and rotation device capable of raising and lowering the blade includes a blade housing configured to receive a blade and having at least one guide on an exterior surface; a base; a first telescopic frame disposed on a first side of the base; a second telescopic frame disposed on a second side of the base; at least one adjustable strap, the adjustable strap disposed between the adjustable frames; wherein the at least one strap extends through the guide on the exterior surface of the housing to suspend the blade.

Cradle assemblies for supporting a door of an aircraft to facilitate servicing the door, and arrangements and methods for the same are provided. In one example, a cradle assembly includes a base and a cradle support subassembly pivotably coupled to the base. The cradle support subassembly is configured to support an outer section of the door.

A high capacity cargo/container dolly. The cargo/container dolly includes retractable side stops that actively retract a roller linkage assembly upon retraction of the retractable side stops rather than relying on passive gravitational forces for the retraction. In some embodiments, the retractable side stops are configured to avoid hold up on the cargo during retraction. The retractable side stops may be coupled to a retraction mechanism that may be actuated from either side of the cargo/container dolly, as well as from one or both ends of the cargo/container dolly. The dolly may include aspects that accommodates dynamic loads that occur during transport to mitigate inadvertent retraction of the retractable side stops or spurious release of catch assemblies that retains cargo on the dolly. The dolly may also include self-locking roller assemblies that release only in the presence of cargo, and deck modules that protect the deck roller from road spray contamination.

A wind turbine blade suspension and rotation device capable of raising and lowering the blade includes a blade housing configured to receive a blade and having at least one guide on an exterior surface; a base; a first telescopic frame disposed on a first side of the base; a second telescopic frame disposed on a second side of the base; at least one adjustable strap, the adjustable strap disposed between the adjustable frames; wherein the at least one strap extends through the guide on the exterior surface of the housing to suspend the blade.

A steerable carriage for moving a wheeled object comprising at least one engagement device (3) configured to engage with and elevate a wheel (5) of the wheeled object off the ground such that the wheeled object can be moved upon displacement of the carriage by transmitting a propulsion force from the carriage to the wheeled object via the at least one engagement device, wherein the at least one engagement device comprises: a support device (12), an actuating device (13) movable with respect to the support device such as to cause the wheel to roll forward onto the support device and be held by the support device and the actuating device, wherein the support device comprises: a stopping member (18) movable between a folded position and a stopping position in which it is configured to stop forward motion of the wheel, and an activation member (23) configured to cause the stopping member to move from the folded position to the stopping position when the wheel is rolled onto the support device.

To provide a moving apparatus including cylindrical rotating bodies each having a surface section that functions as a driving wheel or a working member. A moving apparatus includes three or more cylindrical rotating bodies, and a plurality of coupling members, each of which couples two of the cylindrical rotating bodies together such that an angle between the cylindrical rotating bodies is smaller than 180, where each of the three or more cylindrical rotating bodies includes a motor, and an exterior body configured to be rotated by the motor, where the three or more cylindrical rotating bodies are configured to form a closed polygonal shape to hold an elongated member R including a rope, whereby the moving apparatus is movable along the elongated member.

The inventive subject matter is a bi-directional adjustable roller lift apparatus and a method of use of the apparatus. The bi-directional adjustable roller lift apparatus is made of: a top surface having two sections: a left top surface section and a right-top surface section where the distance between the left-top surface section and a right-top surface section corresponds to the width of a vehicle tire; each of the two sections having a roller assembly disposed on a front-end portion; a supporting frame made of a plurality of vertical elements and a plurality of horizontal elements, wherein a portion of the top surface with the roller assembly projects past the supporting frame; wherein each of the of plurality vertical elements and each of the plurality of horizontal elements are made of a larger channel and a smaller channel, the smaller channel sized to fit within the larger channel, each of the larger channel and a smaller channel having a plurality of corresponding openings sized to accommodate a fastener.

A drum transporter that can be used to move a drum from a first bed at a first location to a second bed at a second location is described. The drum transporter can be coupled to a drive cart and powered thereby. The drum transporter is operable to grab a drum on the first bed and pull the drum onto a support bed of the drum transporter for subsequent movement to the second location. The drum transporter is operable to push the drum off the support bed and onto the second bed.

A parcel cart for transporting parcels comprises a substructure, with a frame mounted to and supported by the substructure. The frame defines an internal volume in which parcels are received and stored for transport. The frame also includes: a base; a first end wall; a second end wall; a first side wall; and a second side wall. To facilitate loading or unloading of the parcel cart, the frame can include at least one end wall configured to transition between an upright position and a lowered position. To facilitate autonomous transport of the parcel cart, the substructure and the frame can define a cavity for receiving a mobile robot. To avoid occlusion of the field of view of one or more cameras associated with the mobile robot, the frame can include at least one end wall that is in a non-perpendicular orientation relative to the base.

A datacenter rack for vertically stacking a plurality of electronic devices is provided. The rack has a frame assembly having two vertical support components and a plurality of removeable trays configured to be inserted between and supported by the vertical support components. Each tray has a pair of opposing sides extending parallel to a longitudinal axis and each of the pair of opposing sides has a tensioned adjustment mechanism to shorten a length of each side to compress the tray in the longitudinal axis, with the tensioned adjustment mechanisms providing a tensioning force against the compression. Each tray also has a top surface with a movement facilitating arrangement for facilitating movement of an electronic device along the tray in the longitudinal axis.