Limit switch with curved or partly spherical convex cover
AssigneeOmron Tateisi Electronics Co.
InventorsHiroshi Kasegi, Takao Kitamura
Life of this patent
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Abstract
A limit switch includes a casing, a switch mechanism housed in the casing, a cover covering the casing, and an actuator mounted in the casing for operating the switch mechanism, the cover having a curved or partly spherical convex surface. The cover has at least a transparent or semitransparent portion, and a rating plate is disposed against a back of the transparent or semitransparent portion of the cover. The curved or partly spherical convex surface of the cover prevents spatter expelled from a welding machine from being deposited thereon. Since the spatter is not deposited directly on the rating plate, indications on the rating plate and the energization of an operation indication lamp within the cover can reliably be confirmed.
Claims6
A limit switch for use in the vicinity of a welding machine comprising:
- a casing;
- a switch mechanism housed in said casing;
- a cover covering said casing;
- and
- an actuator mounted in said casing for operating said switch mechanism, wherein said cover has an inner face and an outer face, said inner face being substantially flat and said outer face being spherically curved with respect to said inner surface, so as to scatter welding spatters, thus inhibiting the spatters from adhering to said outer face.
A limit switch for use in the vicinity of a welding machine comprising:
- a casing;
- a switch mechanism housed in said casing;
- a cover covering said casing and having at least a transparent or semitransparent portion;
- a rating plate disposed between said casing and said transparent or semitransparent portion of said cover;
- and
- an actuator mounted in said casing for operating said switch mechanism, wherein
- said cover has an inner face and an outer face, said inner face being substantially flat and said outer face being spherically curved with respect to said inner surface, so as to scatter welding spatters from adhering to said outer face.
Dependencies are inferred from the claim text.