Patent ID: 7799521

Claim:
A temperature cycling apparatus for repeatedly heating and cooling a reaction mixture, the system comprising: a first heater translatable between a first orientation in which the first heater affects the temperature of the reaction mixture and a second orientation in which the first heater does not substantially affect the temperature of the reaction mixture, and a first prime mover for moving the first heater between the first heater's first and second orientations, a second heater adjacent the first heater, the second heater translatable between a first orientation in which the second heater affects the temperature of the reaction mixture and a second orientation in which the second heater does not substantially affect the temperature of the reaction mixture, and a second prime mover for moving the second heater between the second heater's first and second orientations, the second heater being in the second orientation when the first heater is in the first orientation, and the second heater being in the first orientation when the first heater is in the second orientation during temperature cycling.