Abstract: A double-acting chemical operator drive assembly having a pair of pistons that are secured to the ends of a single piston rod and cooperate with a pair of power cylinders provide a positive drive for opening and closing the separable contacts of a circuit interrupter when the pistons are sequentially actuated by high-pressure gas generated by chemical propellant charges. The power cylinders are spaced apart and aligned with one another and the piston rod extends through open ends of the power cylinders. This eliminates the need for shaft seals and simplifies the manufacture and maintenance of the drive assembly. The operator drive assembly is coupled to the operating mechanism of the circuit interrupter by a yoke that is secured to an exposed medial part of the piston rod and then to a tie bar by a pair of drive rods.

Abstract: An electric circuit interrupter comprising a pair of separable contacts, an operating mechanism for opening and closing the contacts and a drive mechanism including a cylinder-piston assembly and a gas pressure generator having multiple stationary combustion chambers and a directing device for selectively directing an expulsion of gaseous medium from any one of the multiple stationary combustion chambers.

Abstract: An electric circuit interrupter comprising a drive mechanism with a stationary drive piston and a movable drive cylinder for actuating an operating mechanism to selectively open and close a pair of separable contacts.

Abstract: A discharge assembly for an axial flow compressor which places a diffuser which extends radially outwardly and axially outwardly adjacent the last row of rotatable blades to efficiently convert the swirl energy of the fluid into pressure energy without utilizing one or more arrays of stationary blades to straighten the flow before it enters the diffuser.