Adjustable electrical device

Details Adjustable electrical device Adjustable electrical device

1990-05-09

1991-10-22

Griffin, Donald A.

Electricity: electrical systems and devices

Electrostatic capacitors

Variable

H01G 512

Patent

active

050601091

ABSTRACT:
An adjustable electrical device, such as a trimmer capacitor, comprising a housing and an electrode movable relative to the housing, the electrode comprising a screw-threaded portion which is resiliently deformable to allow compliant threaded engagement with a complementarily screw-threaded portion of the housing of slightly smaller diameter. The screw-threaded portion is split to allow said deformation, the split being in the form of a slot extending across the screw-threaded portion, parallel to the rotational axis of the screw-threaded portion. A further slot is located at the base of the screw-threaded portion, which interconnects with the slot. The electrode is provided with an actuating member having a head portion adapted to receive an adjusting tool, such as a screwdriver, and a body portion which is an interference fit within the electrode.

REFERENCES:
patent: 2271983 (1942-02-01), La Rue
patent: 3084313 (1963-04-01), Crooks
patent: 4851961 (1989-07-01), Funk

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