Abstract: A firearm, more specifically a rack and pinion lever-action rifle with a receiver, a barrel having a chamber and joined to said receiver, a cartridge magazine with a cartridge, a sliding bolt with a rack surface and an extractor, and a pinion in direct contact with the bolt. A claw on the pinion delivers a cartridge from the cartridge magazine to the extractor. A lever member is also connected to the receiver with the pivot pin and alternates between a coupled configuration and a partially uncoupled configuration with the pinion via a locking pin. A decoupling pin releases the pinion from a coupled configuration with the lever member. A bolt pin couples with a locking groove in a sliding bolt cap on the locked sliding bolt. A hammer, hammer spring, sear, trigger, and firing pin interact to discharge the firearm. An ejector ejects spent cartridges out of the receiver.

Abstract: A temperature controlled fluid system includes hot and cold fluid supply connections and hot and cold fluid valves for controlling the flow of the hot and cold fluids into the system. Each valve has a valve seat and a valve member which is moveable with respect to the valve seat. First and second stepper motors are connected to the valves in such a manner that actuation of the respective stepper motor moves the corresponding valve member in relationship to the associated valve seat. The system includes a mixer for promoting mixing of the hot and cold fluids into a fluid mixture which has a substantially uniform temperature throughout a given cross section of the mixed fluid flow.