Abstract: A tray for holding a plurality of storage drives includes a sheet of material formed to include: a plurality of tray sidewalls, each having a top edge and a bottom edge; a plurality of tray ends walls arranged relative to the plurality of tray sidewalls to define a plurality of corner regions, each tray end wall having a top edge and a bottom edge; at least one side extension included in each of the tray sidewalls; at least one corner extension included in a corner region; and a tray top spanning the tray sidewalls and the tray ends walls. The tray top includes a pair of top-side surfaces that extend inward from the top edge of a respective one of the tray sidewalls, and a central slotted structure spanning the top-side surfaces. The central slotted structure forms a plurality of slots, each configured to receive one of the plurality of storage drives.

Abstract: A tray for holding a plurality of storage drives includes a sheet of material formed to include: a plurality of tray sidewalls, each having a top edge and a bottom edge; a plurality of tray ends walls arranged relative to the plurality of tray sidewalls to define a plurality of corner regions, each tray end wall having a top edge and a bottom edge; at least one side extension included in each of the tray sidewalls; at least one corner extension included in a corner region; and a tray top spanning the tray sidewalls and the tray ends walls. The tray top includes a pair of top-side surfaces that extend inward from the top edge of a respective one of the tray sidewalls, and a central slotted structure spanning the top-side surfaces. The central slotted structure forms a plurality of slots, each configured to receive one of the plurality of storage drives.

Abstract: A method to infer a temperature of windings in a stator of an electric motor includes repeating processing to infer electric resistance and temperature of the windings. The processing includes calculating a tentative electric resistance of the windings according to an equation that defines a relationship between electric resistance and a group of parameters; calculating a resistance difference between the tentative electric resistance and electric resistance inferred last time; detecting a change in a load state according to the parameters; inferring the electric resistance by adding the integrated value of calculated resistance differences to the initial value of the inferred electric resistance; and inferring the temperature of the windings according to the inferred electric resistance. In the inferring the electric resistance, a resistance difference calculated when a change in the load state is detected is excluded from the integrated value.

Abstract: A light emitting device having two stacked light generators mounted in a reflector cup. In one embodiment the light generators emit complementary colors that mix to form white light.