Abstract: Examples of an operating mechanism of a circuit breaker are described. The operating mechanism includes a housing, a cam element installed on a mechanically driven first shaft, a transmission lever installed on a second shaft parallel to the first shaft, and a support assembly. The transmission lever is provided with a first roller element. The support assembly includes a fork joint that is to support a second roller element and a damper element coupled to the fork joint. During a closing operation of the circuit breaker, the cam element rotates to interact with the first roller element to cause rotation of the transmission lever to close the circuit breaker and rotates further to engage with the second roller element on the fork joint to initiate a closing damper stroke.

Abstract: A novel catalyst useful in the ethynylation of formaldehyde to butynediol is formed by precipitating copper and bismuth from a salt solution of such metals, utilizing an alkali metal hydroxide as the precipitating agent to deposit copper and bismuth hydroxide as a coating around a siliceous carrier particle.

Abstract: A novel catalyst useful in the ethynylation of formaldehyde to butynediol is formed by precipitating copper and bismuth from a salt solution of such metals, utilizing an alkali metal hydroxide as the precipitating agent to deposit copper and bismuth hydroxide as a coating around a siliceous carrier particle.

Abstract: A novel catalyst useful in the ethynylation of formaldehyde to butynediol is formed by precipitating copper and bismuth from a salt solution of such metals, utilizing an alkali metal hydroxide as the precipitating agent to deposit copper and bismuth hydroxide as a coating around a siliceous carrier particle.

Abstract: A novel catalyst useful in the ethynylation of formaldehyde to butynediol is formed by precipitating copper and bismuth from a salt solution of such metals, utilizing an alkali metal hydroxide as the precipitating agent to deposit copper and bismuth hydroxide as a coating around a siliceous carrier particle.

Abstract: A method for producing optical fiber having reduced hydrogen induced loss is provided wherein the optical fiber is treated with deuterium gas for a predetermined duration. The predetermined duration of deuterium treatment is determined based on three factors, that is, a) the concentration of deuterium at which fiber is to be treated with deuterium; b) the reaction temperature at which fiber is to be treated with deuterium; and c) the pressure inside the chamber at which fiber is to be treated with deuterium.

Abstract: A method for producing optical fiber having reduced hydrogen induced loss is provided wherein the optical fiber is treated with deuterium gas for a predetermined duration. The predetermined duration of deuterium treatment is determined based on three factors, that is, a) the concentration of deuterium at which fiber is to be treated with deuterium; b) the reaction temperature at which fiber is to be treated with deuterium; and c) the pressure inside the chamber at which fiber is to be treated with deuterium.

Abstract: Disclosed is a catalyst composite containing a metal catalyst and a specifically defined carbon support containing a carbonaceous material. For example, the carbon support may have a total pore surface area of about 800 m2/g or more and about 2,000 m2/g or less where about 20% or less of the total pore surface area is micro pore surface area. Alternatively the carbon support may have a total pore volume of at least about 0.75 cc/g where about 15% or less of the total pore volume is micro pore volume. Alternatively, the carbon support may have a phosphorus content of about 0.75% by weight or less. Also disclosed are methods of making and using the catalyst composite.