Abstract: A cooling structure for a servo valve includes a shroud to enclose at least a portion of the servo valve; and a base connected to the shroud to define a cooling chamber surrounding the servo valve, the base including an inlet port to receive cooling air, a flow channel connecting to the inlet port and a plurality of flow passages connecting the flow channel to the cooling chamber to allow cooling air flow from the inlet port into the cooling chamber.

Abstract: An overpressure relief valve assembly includes an outer housing having an inlet at a first end opening to an inlet cavity and an outlet at an opposite second end opening to an outlet cavity, and a valve located in the outer housing, the valve including a valve housing that is fixed with respect to the outer housing and an actuator movable within the valve housing to alternatingly cut off and allow communication between the inlet cavity and the outlet cavity.

Abstract: A butterfly valve having a valve body is provided. The butterfly valve includes a valve disk assembly rotationally coupled to the valve body. The valve disk assembly has a disk member with a first surface disposed about a periphery having a first diameter and a second surface offset from the first surface. A seal ring is arranged adjacent the first surface, the seal ring having a first outer surface with a second diameter, wherein the second diameter is larger than the first diameter. A retainer is coupled to the second surface adjacent the seal ring opposite the first surface. The retainer has inner surface arranged to radially constraining the seal ring on the disk member.

Abstract: A valve assembly comprises a flow control valve including a valve shaft, an electrical actuator comprising an actuator output shaft, and a torsion spring coupling the valve shaft and the actuator output shaft.

Abstract: A valve assembly comprises a flow control valve including a valve shaft, an electrical actuator comprising an actuator output shaft, and a torsion spring coupling the valve shaft and the actuator output shaft.

Abstract: A mallet for use by a percussionist for playing a percussion instrument. The mallet comprises an elongated shaft having a first head and a second head at opposite ends of the shaft. Each of these heads is used to produce a musical tone when struck against a percussion instrument. The shaft includes a first shaft portion proximate the first head and a second shaft portion proximate the second head. One of the first and second shaft portions is of greater thickness than the other shaft portion. The first head is made of a fibrous material, e.g., felt cover, for striking the percussion instrument. The second head is a non-fibrous material harder than the fibrous material, e.g., plastic, for striking another percussion instrument. When the percussionist strikes one instrument with the first head, the second shaft portion is held and when the percussionist strikes another instrument with the second head, the first shaft portion is held.