Protective device for a longitudinally extending machine component
First Claim
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1. A protective device for an elongated machine component defining a longitudinal axis and being movable in a direction transversely to said axis, the protective device comprising:
- a bellows extending in the direction of said axis and at least partially covering the machine component;
said bellows having a plurality of structural parts made of electrically insulating material and being displaceable in response to a force acting on said bellows in a direction transverse to said axis;
a plurality of cutouts formed in corresponding ones of said structural parts;
a pair of electrically conductive wires guided in said cutouts along said machine component in the direction of said axis;
tensioning means for applying a tensioning force to said wires for holding said wires taut within said cutouts;
said two wires both passing together through each of said cutouts; and
,contact making means for bringing said wires into electrical contact with each other in response to said force.
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Abstract
A protective device includes at least one pair of conducting wires stretched tightly along a machine component. The wires are guided in cutouts in the partitioning legs of a bellows which at least partially covers the machine component. The shape or a metallization of the legs causes an electric contact to be made between the wires of the pair when the bellows and partitioning legs are displaced by transverse forces acting thereupon. In this way, the emergency circuit of the measuring apparatus can be actuated.
10 Citations
11 Claims
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1. A protective device for an elongated machine component defining a longitudinal axis and being movable in a direction transversely to said axis, the protective device comprising:
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a bellows extending in the direction of said axis and at least partially covering the machine component; said bellows having a plurality of structural parts made of electrically insulating material and being displaceable in response to a force acting on said bellows in a direction transverse to said axis; a plurality of cutouts formed in corresponding ones of said structural parts; a pair of electrically conductive wires guided in said cutouts along said machine component in the direction of said axis; tensioning means for applying a tensioning force to said wires for holding said wires taut within said cutouts; said two wires both passing together through each of said cutouts; and
,contact making means for bringing said wires into electrical contact with each other in response to said force. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification