Electrical conductor
First Claim
Patent Images
1. An endless conveyor belt having a direction of travel comprising:
- (a) an elastomeric body having a load carrying surface and a parallel pulley engaging surface;
(b) a reinforcement ply disposed within said elastomer body; and
(c) a conductor, disposed within said belt in a predetermined pattern forming a closed current path; and
wherein said conductor comprises a plurality of strength filaments or strands of a first metal wrapped about a conductive core of a second metal, said strength filaments or strands having a higher fatigue resistance than the conductive core, for increasing the fatigue resistance of the conductive core.
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Accused Products
Abstract
A conveyor belt (10) having an electrically conductive sensor (20) or antenna embedded therein. The conductor (20) has a copper core having a plurality of stainless steel filaments wrapped together to form a strand or a cable. The conductor has a low profile cross section making it suitable for use in thin belts. The conductor is formed in a repeating sine wave to aid in flexibility. The conductor/belt is especially useful in conveyor rip detection systems.
78 Citations
26 Claims
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1. An endless conveyor belt having a direction of travel comprising:
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(a) an elastomeric body having a load carrying surface and a parallel pulley engaging surface; (b) a reinforcement ply disposed within said elastomer body; and (c) a conductor, disposed within said belt in a predetermined pattern forming a closed current path; and
wherein said conductor comprises a plurality of strength filaments or strands of a first metal wrapped about a conductive core of a second metal, said strength filaments or strands having a higher fatigue resistance than the conductive core, for increasing the fatigue resistance of the conductive core. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. In a conveyor belt detection system being an endless conveyor belt having an elastomeric body having a load and a parallel pulley surface, a reinforcement ply disposed within said body, and a plurality of conductors disposed within said body, each said conductor forming a closed current path;
- a means to drive said belt in a direction of travel;
a detector means disposed a predetermined distance from said belt for determining the continuity of said conductors; and
a control means responsive to an output signal from said detector means for providing a signal indicating a loss of continuity of at least one conductor, wherein said conductor comprises;a plurality of stainless steel filaments wrapped about a copper core and each said conductor having a substantially flat repeating sinusoidal wave form; and each said conductor being disposed within said belt in a predetermined pattern extending transverse to the direction of travel. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
- a means to drive said belt in a direction of travel;
- 24. A system for detecting a rip in a conveyor belt moveable in a closed path of travel comprising detector means positioned along the path of travel, and an elastomeric containing conveyor belt having electrically conductive conductors or antennae for carrying signals transversely across the belt during normal belt operating conditions and for ceasing the carrying of signals when the belt and antenna or conductor are ripped, said antenna being formed from a plurality of stainless steel filaments.
Specification