COLLAPSIBLE CORRUGATED TUBE
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Abstract
A COLLAPSIBLE AND EXTENSIBLE CORRUGATED CYLINDRICAL TUBE CHARACTERIZED BY HAVING ALTERNATING CONVOLUTIONS STAGGERED SO AS TO PERMIT MAXIMUM COLLAPSIBILITY OF THE TUBE WITHOUT MATERIALLY REDUCING MAXIMUM EXTENSIBILITY OF THE TUBE. ALTERNATING OUTER CONVOLUTIONS OF LESSER DIAMETER NEST BETWEEN ALTERNATING OUTER CONVOLUTIONS OF GREATER DIAMETER WHEN THE TUBE IS IN COLLAPSED STATE. ALTERNATING INNER CONVOLUTIONS OF GREATER DIAMETER WHEN THE TUBE IS INNER CONVOLUTIONS OF LESSER DIAMETER WHEN THE TUBE IS IN COLLAPSED STATE. THE TUBE STRUCTURE IS PARTICULARLY USEFUL IN COLLAPSIBLE BOOTS FOR THE SLAVE ARMS OF REMOTE-CONTROL MASTER-SLAVE MANIPULATORS. BY MEANS OF THE COLLAPSIBLE STRUCTURE, REDUCTION IN RANGE OF OPERATION OF THE ARM DUE TO THE BOOT CAN BE MATERIALLY LESSENED.
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