Abstract: Spring operated actuator devices for an electrical circuit breaker and/or electrical switching device include at least one clock spring comprising a disc shaped body with gear teeth and a spiral spring, a cam shaft holding the at least one clock spring with an inner end portion of the spiral spring attached to the cam shaft, and a drive cam held by the cam shaft adapted to be in communication with a follower that directs an actuator to open or close a mobile contact to maintain open and closed energy status of the electrical circuit. The at least one clock spring is configured as a closing spring of the spring operated actuator.

Abstract: Spring operated actuator devices for an electrical circuit breaker and/or electrical switching device include at least one clock spring comprising a disc shaped body with gear teeth and a spiral spring, a cam shaft holding the at least one clock spring with an inner end portion of the spiral spring attached to the cam shaft, and a drive cam held by the cam shaft adapted to be in communication with a follower that directs an actuator to open or close a mobile contact to maintain open and closed energy status of the electrical circuit. The at least one clock spring is configured as a closing spring of the spring operated actuator.

Abstract: An improved shaft assembly comprises an annular hub with a shaft extending therefrom. The hub and the shaft are integrally formed from a single forging, thereby reducing stress concentration locations within the assembly. The hub includes a circumferential wall having a wall thickness. A plurality of teeth protrude from the circumferential wall. Each of the plurality of teeth has a tooth thickness, with the tooth thickness being greater than the wall thickness. Splines are formed on an outer surface of the shaft. Preferably, the splines are induction hardened. A method of manufacturing the improved shaft assembly includes forging a base member and flow forming the base member into the hub and the shaft to create the shaft assembly. Next, the plurality of teeth are formed within the hub. Finally, the splines are formed on the shaft, and preferably induction hardened.

Abstract: The invention relates to a fluid power accumulator in which the fluid undergoes a state change as the system is pressurized to store energy. A state change can be a phase change, a chemical reaction, or a combination of these. Generally the state change results from the interaction of a compressible fluid contained in the accumulator with another substance, which can be a fluid or a solid. Preferably, the state change includes the physical adsorption of a fluid by a solid adsorbant. The invention can improve the energy storage density of a fluid power accumulator, allow a given energy storage density to be achieved at a lower maximum pressure, facilitate heat transfer and storage within an accumulator, and/or improve accumulator efficiency by storing energy in a form other than thermal energy, such as in the form of chemical energy.

Abstract: The use of basic ion exchange resins to adsorb rifamycin B or rifamycin S from dilute solutions containing rifamycin B or rifamycin S is disclosed. The rifamycin B or rifamycin S may be recovered from the resin by desorption with a suitable desorbing solvent system.

Abstract: A process for converting rifamycin O to rifamycin S using a strong acid cation exchange resin to catalyze the reaction and a solvent containing up to about 13% water to dissolve the rifamycin derivatives.