Abstract: An automated order fulfillment system and mobile robot are disclosed, where the mobile robot includes a compliant drive for moving between levels of a multilevel storage structure.

Abstract: An automated order fulfillment system and mobile robot are disclosed, where the mobile robot includes a compliant drive for moving between levels of a multilevel storage structure. In one example, the compliant drive comprises a drive shaft having splines configured to provide rotational play that prevents jamming of a vertical drive gear on the end of the shaft with a rack in a vertical track.

Abstract: A thin film-retaining washer with custom geometry that may further provide for a simple press-on installation while maintaining retention of fasteners during assembly, shipping, handling, and/or use of associated systems. The present retaining hardware is easily manufactured from sheet or film materials with minimal post-processing and may be scaled and optimized for use with multiple size and style of fasteners. Further, the thickness profile of the thin film retaining hardware facilitates lobe spring deflection to further provide secure retention of the associated fasteners.

Abstract: Provided herein are energy storage devices. In some cases, the energy storage devices are capable of being transported on a vehicle and storing a large amount of energy. An energy storage device is provided comprising at least one liquid metal electrode, an energy storage capacity of at least about 1 MWh and a response time less than or equal to about 100 milliseconds (ms).

Abstract: An undesirable constituent gas from the flue gas stream of a fossil fuel-fired power plant, especially carbon dioxide, CO2, which is a potent greenhouse gas, is captured in a recirculating solvent-based absorption operation such as with an amine-based solvent. The solvent is exposed to flue gases for capture of the undesirable constituent, then heated to extract captured undesirable constituent for disposal, also regenerating the gas-rich solvent to gas-lean solvent for re-use. Absorption is continuous and uses the lean solvent at a rate proportional to the combustion rate. Solvent regeneration and its associated power loading are deferred and time-shifted to periods when the plant is operating below its peak power level. At high or peak power levels, rich solvent from absorption is accumulated in a storage vessel. At off-peak times, rich solvent accumulated in the storage vessel is regenerated together with rich solvent from concurrent absorption.