Patent ID: 8864476

Claim:
A pump comprising: a housing having a battery receiving portion configured with a flat wall having electrical terminals arranged thereon for receiving power to the pump; and a battery having a protruding portion configured with a corresponding flat wall having corresponding electrical terminals arranged thereon, the corresponding electrical terminals being configured to contact respectively both of the electrical terminals on the flat wall of the battery receiving portion to provide power from the battery to the pump when the protruding portion of the battery is inserted into the battery receiving portion of the housing and rotated to an “ON” position, and the corresponding electrical terminals also being configured not to contact respectively both of the electrical terminals when the battery is rotated from the “ON” position to an “OFF” position; wherein the battery receiving portion has an internal wall configured with at least one axial channel therein; and the protruding portion has an external wall having at least one protruding portion configured to engage the at least one axial channel for guiding and orienting the battery when inserted into the battery receiving portion into a first rotational position; and wherein the internal wall of the battery receiving portion is configured with at least one partial circumferential channel; and the at least one protruding portion is configured to engage the at least one partial circumferential channel for rotating the battery from the first position when the protruding portion of the battery is inserted into the battery receiving portion of the housing into either a second rotational position, including the “ON” position where the pump is turned “ON”, or to a third rotational position, including the “OFF” position where the pump is turned “OFF”.