Locking Shroud for Trimmer Potentiometers
Original Publication Date: 1986-May-01
Included in the Prior Art Database: 2005-Mar-09
Disclosed is a shroud for a trimmer potentiometer to lock it in position. It may be configured for reversible or irreversible applications. Trimmer potentiometers are susceptible to having their setting changed due to vibrations or rough handling. Conventionally, they are "locked" into position through use of adhesives applied to the adjusting screw and case. This method still leaves the potentiometer susceptible to being changed with little effort. The shroud disclosed in Fig. 1 solves this problem. Referring to Fig. 1, the shroud 1 is composed of molded plastic with an internal locking spline 2, a splined opening for engaging the adjusting screw knob 4 and three sets of locking tabs 3. Referring to Fig. 2, once the potentiometer adjusting screw (Fig.