COLLETS FOR USE WITH VALVES

摘要

Collets for coupling rotary actuators to valves are disclosed. An example shaft coupling assembly includes an elongated member (122) having a first end and a second end, in which the first end includes a coupling portion having a first opening (228) configured to receive a rectangular shaft. The coupling portion includes at least one flexible member (230a-d) having an arcuate outer surface (236a-d) and a first inner surface (238a-d) adjacent a second inner surface (240a-d) that at least partially define the first opening. At least a portion of the first inner surface is to engage a first side of the rectangular shaft and at least a portion of the second inner surface is to engage a second side of the rectangular shaft. The shaft coupling assembly further includes a sleeve (120) having a second opening (204) to receive the elongated member and a tapered third opening (206) configured to receive the coupling portion.