Miniature variable-resistance device with flexible disk contact专利检索-平带电位微电子学专利检索查询-专利查询网

Miniature variable-resistance device with flexible disk contact

阅读：185发布：2023-05-20

专利汇可以提供Miniature variable-resistance device with flexible disk contact专利检索，专利查询，专利分析的服务。并且A potentiometer comprising a body of homogeneous vitreous material in which a plurality of wire leads are embedded flush with a surface of the vitreous body which is received in a metal frame. A cup-shaped housing encloses the flush surface of the body and engages the frame while receiving a rotatable plug having a boss with a screwdriver slot extending through this cover. An arcuate contact strip is applied, e.g. by vacuum depositing to the surface while a thin deformable plate yieldably overlies the contact strip in spaced relation therewith, the contact strip being angularly fixed upon rotation in the plug, a spring-loaded ball presses a limited region of the disk against the contact strip to form the wiper.，下面是Miniature variable-resistance device with flexible disk contact专利的具体信息内容。

权利要求

1. A miniature variable resistance device comprising a body of homogeneous vitreous material having a ground optically-polished surface; a plurality of conductive leads embedded in said body and terminating flush with said surface; an arcuate contact strip vacuum-deposited upon said surface and conductively connected with said leads; a resiliently deflectible conductive disk overlying said surface and normally spaced above said strip while being angularly fixed with respect to said body; and a rotatable member disposed above said surface and provided with an element bearing upon said disk and deflecting same into engagement with said strip, said disk being electrically connected with one of said leads.

2. The device defined in claim 1 wherein said element includes a ball mounted in said member for movement toward and away from said surface and a helicoidal spring in said member resiliently biasing said ball against said disk over a limited region of the latter.

3. The device defined in claim 2, further comprising a cup-shaped can surrounding said surface and provided with a central opening; said member being formed as a plug rotatably received in said can and having a boss extending into said opening for rotation of said member.

4. The device defined in claim 3, further comprising a sealing gasket surrounding said opening and bearing upon said member around said boss.

5. The device defined in claim 4, further comprising mutually engageable formations on said can and on said member for limiting rotation of said member within said can.

6. The device defined in claim 1 wherein said strip is a resistance film of homogeneous composition.

7. The device defined in claim 1 wherein said strip consists of a metallic layer and a semi-conductor layer disposed one above the other.

8. The device defined in claim 1 wherein said strip is formed with discrete mosaic-like metal islets.

9. The device defined in claim 1, further comprising vacuum-deposited metallic contact segments electrically connecting said strip with said leads.

10. The device defined in claim 1 wherein said strip is a circular arc segment connected at its ends to two of said leads, said potentiometer further comprising a central contact layer deposited on said surface and electrically connected to another of said leads between the ends of said strip, said disk being dished and having a convex portion bearing upon said layer, said member being constituted as a rotatable plug having a central pivot ball seated in said convex portion and spring loaded thereagainst, a can surrounding said plug and provided with a central opening, a gasket surrounding said opening and sealingly engaging said plug, said plug having a boss provided with a screw driver slot projecting through said opening, cooperating formations on said can and said plug for limiting rotation of said plug within said can, said element including a spring-loaded ball carried by said plug and bearing against said disk, and a frame in conductive relationship with one of said leads and surrounding said body and engaged by said can, said body being composed of glass.

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Miniature variable-resistance device with flexible disk contact

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