Electricity: circuit makers and breakers – Electric switch details – Indicators
Patent
1979-08-03
1981-01-13
Little, Willis
Electricity: circuit makers and breakers
Electric switch details
Indicators
H01H 1914
Patent
active
042451418
ABSTRACT:
An electrical switch comprises a body, including a base, an operating member supported by the body for rotational and axial movement relative thereto, an aperture extending through the base and a light source support member received in said aperture. The support member and the wall of the aperture are so shaped that the support member can be located in the base in either of first and second different axial positions relative to the base. The support member includes a blocking element, which in the first axial location of the support member relative to the base extends into the path of either axial or rotational movement of the operating member relative to the body to prevent such movement of the operating member relative to the body. The second location of the support member relative to the base is such that said blocking element lies out of the path of either axial or rotational movement of the operating member so that both movements of the operating member relative to the body are permitted.
REFERENCES:
patent: 2273353 (1942-02-01), Harris
patent: 2744185 (1956-05-01), Cawley
patent: 2786904 (1957-03-01), Hewes et al.
patent: 3215806 (1965-11-01), Arnold et al.
patent: 3867596 (1975-02-01), Schadow
Little Willis
Lucas Industries Limited
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