Method and apparatus for detecting surface flaws in electrical cable plastic jacketing

• Main Author: LAGROTTA, RICHARD THOMAS
• Format: Patent
• Language: English; French; German
• Published: 23.01.1991
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; PHYSICS; TESTING

This invention employs principles associated with air-lubricated thrust bearings, to provide highly sensitive indicators of the presence of defects along the surface of a cable insulative layer (11). A spring-loaded mounted probe (21) containing an axial air passage (23) is closely directed at the c...