Abstract: A combination hydraulic master cylinder comprising two typically parallel pumps disposed within adjacent compartments within a common body of the combination hydraulic master cylinder. Each pump's piston physically pressurizes hydraulic fluid that has been separately drawn into its respective cylinder and in hydraulic isolation, however the proximate location of the independent pumps allows for convenient operation using one hand on one handlebar with reduced congestion of space rather than the more conventional arrangement of two separate master cylinders. The pistons are actuated mechanically using dedicated levers mounted externally to the cylinders. The levers are adjustable in the manner to which they are disposed to the pistons. One lever is oriented such that it is operable using a finger pull action; the second lever is oriented such that it is operable using a thumb push action.

Abstract: A supercharger comprising a series of parallel rotors disposed within adjacent compartments within the housing of the supercharger. The rotors are designed to physically compress air that is drawn into the system in a gradual, linear manner, rather than in a stepped manner as is common to most conventional superchargers, in order to reduce the amount of energy loss to thermal energy and reduce the stress imparted upon the system via the compression of the air. The rotors comprise a shaft and a helical thread. The diameter of the shaft increases and the pitch of the helical thread decreases from the position of the inlet of the chamber in which the rotor is disposed to the position of the outlet of the chamber in which the rotor is disposed.

Abstract: A supercharger comprising a series of parallel rotors disposed within adjacent compartments within the housing of the supercharger. The rotors are designed to physically compress air that is drawn into the system in a gradual, linear manner, rather than in a stepped manner as is common to most conventional superchargers, in order to reduce the amount of energy loss to thermal energy and reduce the stress imparted upon the system via the compression of the air. The rotors comprise a shaft and a helical thread. The diameter of the shaft increases and the pitch of the helical thread decreases from the position of the inlet of the chamber in which the rotor is disposed to the position of the outlet of the chamber in which the rotor is disposed.

Abstract: A high strength, high toughness, low carbon/low manganese steel is provided that is further resistant to stepwise cracking and sulfide stress cracking. The steel can be produced by conventional or thin slab casting techniques using normal speeds, with low manganese segregation levels. The steels are excellent candidates for linepipe applications in severe sour gas service.