Abstract: A scissors lift vehicle includes a chassis, a first pair of wheels disposed at one end of the chassis and a second pair of steering wheels disposed at an opposite end of the chassis. The wheels include a circular profile having a radius R. The scissors lift vehicle includes a track having an upper surface and a lower surface extending aft at a height less than R above the travel surface. A pivot connection is coupled to the aft plate at a height less than R above the travel surface. A scissors stack assembly includes a plurality of paired scissors linkages. Each scissors linkage of a first pair of scissors linkages is coupled to a respective pivot connection. Each scissors linkage of a second pair of scissors linkages includes a truck coupled to a distal end. The truck is configured to engage the upper surface of the track.

Abstract: A freezer including a plurality of self-supporting planar wall structures surrounding an interior volume, a floor member comprising a portion of a modular cube structure, and a refrigeration unit thermally coupled to the interior volume and configured to maintain a temperature of the interior volume less than ?40.0° C.

Abstract: An extraction room in a modular cube structure includes a processing enclosure, an equipment enclosure, and an exhaust stack. A first wall of the exhaust stack forms an interior wall of the processing enclosure. A second wall of the exhaust stack forms an exterior wall of the extraction room. The exhaust stack extends through the equipment enclosure to an ambient space external to the extraction room.

Abstract: An umbilical corridor structure includes a plurality of hollow elongate corridor segments having a predetermined length. Each of the plurality of corridor segments includes a first end flange couplable to a complementary first end flange of an adjacent one of the plurality of corridor segments, a side flange couplable to a complementary end flange of an adjacent modular cube structure, and a plurality of service conduits extending from the end flange of the corridor segment to at least the side flange of the corridor segment.

Abstract: A freezer including a plurality of self-supporting planar wall structures surrounding an interior volume, a floor member comprising a portion of a modular cube structure, and a refrigeration unit thermally coupled to the interior volume and configured to maintain a temperature of the interior volume less than ?40.0° C.

Abstract: A scissors lift vehicle includes a chassis, a first pair of wheels disposed at one end of the chassis and a second pair of steering wheels disposed at an opposite end of the chassis. The wheels include a circular profile having a radius R. The scissors lift vehicle includes a track having an upper surface and a lower surface extending aft at a height less than R above the travel surface. A pivot connection is coupled to the aft plate at a height less than R above the travel surface. A scissors stack assembly includes a plurality of paired scissors linkages. Each scissors linkage of a first pair of scissors linkages is coupled to a respective pivot connection. Each scissors linkage of a second pair of scissors linkages includes a truck coupled to a distal end. The truck is configured to engage the upper surface of the track.

Abstract: A method and system for a scissors lift vehicle are provided. The scissors lift vehicle includes a carriage including a plurality of independently steerable wheels configured to engage a travel surface, the wheels including an axis of rotation and a circular profile having a radius R, the wheels spaced apart in a fore/aft direction and in a right/left direction.

Abstract: A system and method of controlling a scissors lift vehicle are provided. The system includes a main computer including one or more processors and one or more memory devices communicatively coupled to the one or more processors, a steer controller configured to receive commands from the main computer to control a plurality of independently steerable wheel assemblies, each wheel assembly including a steer angle sensor, a steer angle actuator, and a drive motor, and a scissors lift controller configured to control a hydraulic piston assembly including a hydraulic fluid reservoir internal to a piston rod assembly. The system also includes a tilt sensor configured to determine an angle of incline the scissors lift vehicle, a variable-speed steer actuator configured to rotate a wheel assembly about the steer axis of rotation at a selectable rate, and a wheel including a respective drive axis of rotation.

Abstract: A system and method of operating a scissors lift assembly are provided. The system includes a hollow piston rod including an internal fluid reservoir, a cylinder body that is coaxial with and at least partially surrounding the hollow piston rod, and a fluid pump in flow communication with the reservoir through a suction channel extending from the internal fluid reservoir though a transfer tube to a suction port of the fluid pump. The transfer tube is coaxial with the piston, the piston rod, and the cylinder body and a discharge port of the fluid pump is in flow communication with an extension pressure chamber.

Abstract: A system and method of controlling a scissors lift vehicle are provided. The system includes a main computer including one or more processors and one or more memory devices communicatively coupled to the one or more processors, a steer controller configured to receive commands from the main computer to control a plurality of independently steerable wheel assemblies, each wheel assembly including a steer angle sensor, a steer angle actuator, and a drive motor, and a scissors lift controller configured to control a hydraulic piston assembly including a hydraulic fluid reservoir internal to a piston rod assembly. The system also includes a tilt sensor configured to determine an angle of incline the scissors lift vehicle, a variable-speed steer actuator configured to rotate a wheel assembly about the steer axis of rotation at a selectable rate, and a wheel including a respective drive axis of rotation.

Abstract: A system and method of controlling a scissors lift vehicle are provided. The scissors lift vehicle system includes a carriage including a plurality of independently steerable wheel assemblies configured to engage a travel surface. The plurality of independently steerable wheel assemblies, each steerable about a steer axis of rotation include one of the plurality of wheel assemblies being designated a master wheel and the remaining wheel assemblies being designated slave wheels. The wheel assemblies each include a variable-speed steer actuator configured to rotate a respective wheel assembly about the steer axis of rotation of that wheel assembly at a selectable rate. The wheel assemblies each also include a wheel including a respective drive axis of rotation and a variable-speed drive actuator configured to rotate that wheel about a respective steer axis of rotation at a selectable rate.

Abstract: A form assembly includes an outer frame having a predefined shape. The frame includes at least two segments that are coupled together at a coupling portion. Each segment includes a first flange and a second flange positioned a predefined distance from the first flange. The first flange includes openings that extend substantially therethrough and the second flange includes openings that extend substantially therethrough and that are substantially concentrically aligned with the first flange openings. A lifting apparatus is positioned in a location that is bounded by the frame. Rebar members are coupled to the frame such that at least a portion of one of the rebar members is positioned within one first and second flange openings. At least four rebar segments are coupled to the lifting apparatus such that the rebar segments define an X-shape within the form assembly to facilitate maintaining the frame in the predefined shape.

Abstract: A system and method of operating a scissors lift assembly are provided. The system includes a hollow piston rod including an internal fluid reservoir, a cylinder body that is coaxial with and at least partially surrounding the hollow piston rod, and a fluid pump in flow communication with the reservoir through a suction channel extending from the internal fluid reservoir though a transfer tube to a suction port of the fluid pump. The transfer tube is coaxial with the piston, the piston rod, and the cylinder body and a discharge port of the fluid pump is in flow communication with an extension pressure chamber.

Abstract: A system and method of controlling a scissors lift vehicle are provided. The scissors lift vehicle system includes a carriage including a plurality of independently steerable wheel assemblies configured to engage a travel surface. The plurality of independently steerable wheel assemblies, each steerable about a steer axis of rotation include one of the plurality of wheel assemblies being designated a master wheel and the remaining wheel assemblies being designated slave wheels. The wheel assemblies each include a variable-speed steer actuator configured to rotate a respective wheel assembly about the steer axis of rotation of that wheel assembly at a selectable rate. The wheel assemblies each also include a wheel including a respective drive axis of rotation and a variable-speed drive actuator configured to rotate that wheel about a respective steer axis of rotation at a selectable rate.

Abstract: A method and system for a scissors lift vehicle are provided. The scissors lift vehicle includes a carriage including a plurality of independently steerable wheels configured to engage a travel surface, the wheels including an axis of rotation and a circular profile having a radius R, the wheels spaced apart in a fore/aft direction and in a right/left direction.

Abstract: A form assembly includes an outer frame having a predefined shape. The frame includes at least two segments that are coupled together at a coupling portion. Each segment includes a first flange and a second flange positioned a predefined distance from the first flange. The first flange includes openings that extend substantially therethrough and the second flange includes openings that extend substantially therethrough and that are substantially concentrically aligned with the first flange openings. A lifting apparatus is positioned in a location that is bounded by the frame. Rebar members are coupled to the frame such that at least a portion of one of the rebar members is positioned within one first and second flange openings. At least four rebar segments are coupled to the lifting apparatus such that the rebar segments define an X-shape within the form assembly to facilitate maintaining the frame in the predefined shape.