Electrical control having an insulated shaft extension

Details Electrical control having an insulated shaft extension Electrical control having an insulated shaft extension

1975-08-21

1977-07-12

Albritton, C. L.

Electrical resistors

Mechanically variable

Movable contact electrically adjustable over length of...

200331, 338163, H01C 1032

Patent

active

040357597

ABSTRACT:
An electrical control is provided with an insulated shaft extension. The insulated shaft extension is attached to a metal shaft rotatably supported in a bushing attached to the housing of the control. A hollow shaft portion of the insulated shaft extension is in concentric relationship with the metal shaft. Tabs are sheared from the hollow shaft portion to abut against a shoulder defined by a reduced diameter portion on the metal shaft. The metal shaft has a flat which mates with a flat formed in the hollow shaft portion to prevent relative rotation of the shafts. Deformable ribs extend along the flat in the hollow shaft portion to ensure engagement with the flat on the metal shaft.

REFERENCES:
patent: 2781436 (1957-02-01), Barden
patent: 3427680 (1969-02-01), Gilbert
patent: 3594529 (1971-07-01), Cartwright

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