Abstract: A battery cabinet with a plurality of spaced apart shelves of equal width and depth. Each shelf supports a removable battery module. In turn, each module has a fixed adapter that holds batteries as a battery bank where the module and adapter occupy most of the space between shelves. Battery cells are vertically or horizontally aligned with terminals joined to comb-shaped straps with blades joined to battery terminals. The space between blades allows for thermal expansion without wear on terminals.

Abstract: A two speed, single phase electric motor having a stator assembly including a main winding and a supplemental winding. Each of these windings includes a pair of coil sets. The main winding coil sets and the supplemental winding coil sets are so connected to a source of electrical power such that during high speed operation of the motor the number of effective turns is the sum of the turns in one main winding coil set and its supplemental winding coil set, and during low speed operation, only the turns in the main winding coil set are energized so that there are fewer effective turns. Thus, by varying the number of turns included in the supplemental winding coil sets while keeping the total number of effective turns in the main winding and supplemental winding constant, the low speed breakdown torque of the motor may be preselected during the design of the motor to be less than, equal to, or greater than a desired high speed breakdown torque.

Abstract: A dynamoelectric machine in the form of an induction motor is provided which is capable of two speed operation with a minimum number of motor leads and a minimum number of motor windings. The motor includes a stator assembly and a rotor assembly, the stator assembly being adapted to receive the motor windings in a conventional manner. The motor windings are constructed from a plurality of coil sets, groups of which define physical poles for the motor. The windings include a first main winding, a second main winding and an auxiliary winding. The first main winding and the auxiliary winding have an equal number of physical motor poles. The second main winding has twice the number of physical motor poles as the first main winding. The first main winding and the auxiliary winding are energized to permit motor operation at a first speed.