Electrical rotary switch

Details Electrical rotary switch Electrical rotary switch

1998-05-13

1999-09-28

Gellner, Michael L.

Electricity: circuit makers and breakers

Multiple circuit control

Pivoted contact

200 11DA, H01H 1958

Patent

active

059592699

ABSTRACT:
A rotary switch has a control knob (3) that is mounted on at least three balls (6) that move, guided by a cage disk (7), in a housing groove (8) formed by a radial wall (9) and an axial wall (10), against which the balls (6) are urged by an outward or inward conical bearing surface (11) or (12). The radial and axial wall bearing surfaces have contact segments and contact paths (13, 14) that are shorted by at least one of the balls (6). The control knob has a stop lug (15), an operational adjustment angle (4) of which is limited by housing lugs (16) and which, during operational adjustment, contacts at least one of two stop lugs (17) of the cage disk, which are positioned at an angle that corresponds approximately to one-half the maximum operational adjustment angle (4) and to a maximum contact adjustment angle (5). This structure results in reduced cost and functional improvement.

REFERENCES:
patent: 3394236 (1968-07-01), Grundig
patent: 4052573 (1977-10-01), Kojima et al.

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