Method of making a variable resistance control
AssigneeCTS Corporation
InventorJohn D. VanBenthuysen
Life of this patent
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Abstract
A variable resistance control includes a metallic structure plate that functions as a heat sink and that provides both a collector and terminals, a body that is molded onto the structure plate, a resistance element that is deposited onto the body and onto portions of the terminals, a contactor, and a driver. In one embodiment, additional miniaturization is made possible by bending a tab portion of the structure plate between two of the terminals to form a stop lug for limiting rotational movement of the driver.
Claims7
A method for making a variable resistance control comprising the steps of:
- (a) blanking terminals and a structure plate having a collector and stop means;
- (b) molding a body onto the structure plate;
- (c) depositing a resistance element onto a surface of the body and onto portions of the terminals;
- and
- (d) attaching a moveable contactor means in cooperative engagement with the resistance element to effect a variable resistance control.
In the process of making a variable resistor, the steps including:
- (a) blanking a structure plate and a plurality of electrically spaced terminals, said structure plate including a collector and heat sink means;
- (b) molding a body of electrically nonconductive material onto the structure plate;
- (c) depositing a resistance element onto a surface of the body, the surface area of the heat sink means being substantially the same as or larger than the surface area of the resistance element.
Dependencies are inferred from the claim text.